Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| bacterial penetration through canals of endodontically treated teeth in the presence or absence of the smear layer. | the goal of this study is to determine if the smear layer affects the passage of bacteria through or around obturating material as evidenced by penetration of bacteria through and out the canal. specifically, this study focused on determining the effect of the smear layer on the magnitude of bacterial penetration through the apical foramen. | 2003 | 12735922 |
| in vitro activities of telithromycin and 10 oral agents against aerobic and anaerobic pathogens isolated from antral puncture specimens from patients with sinusitis. | a study of the comparative in vitro activity of telithromycin, a new ketolide, against 155 aerobic and 171 anaerobic antral sinus puncture isolates showed it to be active against a broad range of sinus pathogens. all pneumococci, including erythromycin-resistant strains, were susceptible to telithromycin at < or = 0.5 microg/ml; all haemophilus influenzae and eikenella corrodens strains were inhibited by < or = 4 microg of telithromycin/ml; all moraxella spp. and beta-lactamase-producing prevote ... | 2003 | 12760875 |
| additive antimicrobial activity of calcium hydroxide and chlorhexidine on common endodontic bacterial pathogens. | it is an established procedure to use calcium hydroxide [ca(oh)2] as a therapeutic component to achieve sterilization of infected root canals. unfortunately, some bacterial species are relatively resistant to ca(oh)2 and are therefore associated with treatment failures. the objective of this study was to identify combinations of substances that improve antimicrobial activity. ca(oh)2 was used as a suspension or as a component of gutta-percha points. efficacy of killing was compared for (a) ca(oh ... | 2003 | 12775007 |
| evaluation of antibacterial activity of mangifera indica on anaerobic dental microglora based on in vivo studies. | the present study was carried out to compare the subgingival plaque microflora in mango leaf users. fifty subjects of both sexes, 25 of them used tooth brush and 25 used mango leaf as their home care hygiene device were included in the study. the microbiological evaluation for specific bacterial counts of actinobacillus actinomycetemcomitans, prevotella intermedia, porphyromonas gingivalis, fusobacterium nucleatum and peptostreptococcus micros were carried out for all subject. specific microbial ... | 2002 | 12785172 |
| antibacterial activity of medicinal plant extracts against periodontopathic bacteria. | this study was performed to evaluate the antibacterial activity of althaea officinalis l. roots, arnica montana l. flowers, calendula officinalis l. flowers, hamamelis virginiana l. leaves, illicium verum hook. fruits and melissa officinalis l. leaves, against anaerobic and facultative aerobic periodontal bacteria: porphyromonas gingivalis, prevotella spp., fusobacterium nucleatum, capnocytophaga gingivalis, veilonella parvula, eikenella corrodens, peptostreptococcus micros and actinomyces odont ... | 2003 | 12820224 |
| effect of smoking and periodontal treatment on the subgingival microflora. | the effect of smoking on the prevalence of periodontal pathogens after periodontal treatment is still not clear. some studies found no effect of the smoking status on the prevalence of periodontal pathogens after therapy, whereas others did. the aim of this retrospective study was to investigate the influence of smoking on the treatment of periodontitis and the composition of the subgingival microflora. | 2003 | 12834497 |
| rapid identification of gram-positive anaerobic coccal species originally classified in the genus peptostreptococcus by multiplex pcr assays using genus- and species-specific primers. | here, a rapid and reliable two-step multiplex pcr assay for identifying 14 gram-positive anaerobic cocci (gpac) species originally classified in the genus peptostreptococcus (anaerococcus hydrogenalis, anaerococcus lactolyticus, anaerococcus octavius, anaerococcus prevotii, anaerococcus tetradius, anaerococcus vaginalis, finegoldia magna, micromonas micros, peptostreptococcus anaerobius, peptoniphilus asaccharolyticus, peptoniphilus harei, peptoniphilus indolicus, peptoniphilus ivorii and pepton ... | 2003 | 12855723 |
| extensive subgaleal abscess and epidural empyema in a patient with acute frontal sinusitis. | acute frontal sinusitis can be a serious condition because of its potential life-threatening complications. these complications, including spread of infection to the frontal bone and intracranially, require prompt diagnosis and intervention to avoid morbidity and mortality. we report a case of acute frontal sinusitis in a 16-year-old girl who presented with fever, severe headache, and vomiting of 3 days' duration. generalized fluctuant swelling of the nasal root, and bilateral supraorbital and f ... | 2003 | 12874674 |
| positive and negative bacterial associations involving dialister pneumosintes in primary endodontic infections. | dialister pneumosintes is an anaerobic gram-negative rod that has been recently implicated as a candidate endodontic pathogen. in this study, samples taken from abscessed teeth and infected root canals associated with asymptomatic or symptomatic periradicular lesions were examined for the occurrence of bacterial associations involving d. pneumosintes. dna was extracted from the samples, and the presence of d. pneumosintes and 16 other bacterial species was determined by means of species-specific ... | 2003 | 12877258 |
| antibiotic resistance of pathogenic bacteria from odontogenic infections in taiwan. | the purpose of this study was to evaluate the susceptibility of facultative and anaerobic odontogenic infectious flora to various antibiotics. we assessed 178 bacterial strains isolated from 74 patients with odontogenic infections. the e-test was used to determine susceptibility. the microbial flora was predominantly facultative gram-positive organisms and anaerobic gram-negative bacilli. the results of antimicrobial susceptibility test showed that ampicillin resistance was found with a very hig ... | 2003 | 12886961 |
| subgingival microflora in turkish patients with periodontitis. | no information exists on periodontitis-associated subgingival microbiota from turkey. we determined the occurrence, interspecies relationships, and clonal characteristics for a group of periodontal bacteria in a turkish study population. | 2003 | 12886990 |
| coronal microleakage assessed by polymicrobial markers. | studies have shown significant bacterial leakage following exposure of sealed root canals to artificial and natural saliva. the objective of this study was to determine contamination via bacterial migration in artificial saliva in endodontically treated teeth using different obturation techniques and sealers. a total of 144 extracted, human mandibular anterior teeth were cleaned and shaped to a #40 master apical file using hand and rotary instrumentation. one hundred and twenty teeth were divide ... | 2003 | 12937592 |
| bacteriological study of root canals associated with periapical abscesses. | the aim of this study was to identify microorganisms from root canals with periapical abscesses and to ascertain the susceptibility of peptostreptococcus prevotii and fusobacterium necrophorum to antimicrobials. study design thirty root canals were microbiologically sampled by using sterile paper points. the concomitant microorganisms were identified through the use of established methods. the susceptibility of p prevotii and f necrophorum to antimicrobials was evaluated by using the e test meth ... | 2003 | 12973290 |
| studies on streptococcus micros. | 1957 | 13502313 | |
| intermediatry metabolism of diplococcus glycinophilus. i. glycine cleavage and one-carbon interconversions. | 1961 | 13745383 | |
| intermediary metabolism of diplococcus glycinophilus. ii. enzymes of the acetategenerating system. | klein, sigrid m. (brigham young university, provo, utah) and richard d. sagers. intermediary metabolism of diplococcus glycinophilus. ii. enzymes of the acetate-generating system. j. bacteriol. 83:121-126. 1962-the enzymatic steps in the conversion of glycine to acetate by diplococcus glycinophilus were examined and the reaction rates of the individual steps compared with the maximal glycine fermentation rate by whole cells. glycine is oxidatively cleaved to one-carbon units with the alpha carbo ... | 1962 | 14456783 |
| distribution of periodontal pathogens in korean aggressive periodontitis. | microbial associations in aggressive periodontitis versus different ethnic origins are substantially unknown. we undertook this study to determine the prevalence of seven putative periodontopathogens in korean patients and to evaluate microbial differences in localized and generalized aggressive periodontitis patients. | 2003 | 14584866 |
| microbiological examination of infected dental root canals. | the aim of this study was to investigate the root canal microbiota of primary and secondary root-infected canals and the association of constituent species with specific endodontic signs and symptoms. | 2004 | 14871344 |
| human beta-defensins 2 and 3 demonstrate strain-selective activity against oral microorganisms. | human beta-defensins 2 and 3 (hbd-2 and hbd-3) are inducible peptides present at sites of infection in the oral cavity. a few studies have reported broad-spectrum antimicrobial activity for both peptides. however, no comprehensive study has thoroughly investigated their potential against oral pathogens. the purpose of this study was to test the effectiveness of hbd-2 and hbd-3 against a collection of oral organisms (actinobacillus actinomycetemcomitans, fusobacterium nucleatum, porphyromonas gin ... | 2004 | 15004048 |
| cervical spinal epidural abscess and meningitis due to prevotella oris and peptostreptococcus micros after retropharyngeal surgery. | 2004 | 15034651 | |
| phospholipid analogue profiles of peptostreptococcus, micromonas, and finegoldia species analysed by fast atom bombardment mass spectrometry. | species of peptostreptococcus cause a variety of infections, primarily abscesses of soft tissues, joints, and mucous membranes. the aim of this study was to compare the phospholipid analogue profiles of peptostreptococcus species, represented by p. anaerobius, p. asaccharolyticus, p. indolicus, p. lacrimalis, and p. prevotii; micromonas micros (p. micros) and finegoldia magna (p. magnus). after anaerobic growth on blood-faa, lipids extracted by chloroform-methanol (2:1 v/v) were purified, then a ... | 2001 | 15049457 |
| the microbial synergy of peptostreptococcus micros and prevotella intermedia in a murine abscess model. | this study characterized the microbial interaction of peptostreptococcus micros and prevotella intermedia, the major pathogens of dentoalveolar infection, using a murine model. subcutaneous injection of p. micros cells in the dorsum of the mouse together with living cells of p. intermedia resulted in a significantly larger abscess when compared with single injection of the organisms (p < 0.02). the abscess size was also significantly increased (p < 0.05) when the plate-cultured cell suspension o ... | 2004 | 15107069 |
| surveillance of susceptibility patterns in 1297 european and us anaerobic and capnophilic isolates to co-amoxiclav and five other antimicrobial agents. | in vitro susceptibility data were collected for co-amoxiclav and other antimicrobial agents against 1297 recent anaerobe isolates collected in europe and the usa. the co-amoxiclav (amoxicillin/clavulanic acid) mic(50/90)s (amoxicillin/clavulanic acid concentration in a ratio of 2:1, expressed in terms of amoxicillin concentration in mg/l) were 0.5/4 for bacteroides fragilis, </=0.125/1 for prevotella species, </=0.125/0.25 for fusobacterium nucleatum, 0.5/1 for eikenella corrodens, 0.25/8 for pe ... | 2004 | 15128729 |
| antibiotic resistance profile of the subgingival microbiota following systemic or local tetracycline therapy. | tetracyclines have been extensively used as adjunctives to conventional periodontal therapy. emergence of resistant strains, however, has been reported. this study evaluated longitudinally the tetracycline resistance patterns of the subgingival microbiota of periodontitis subjects treated with systemic or local tetracycline therapy+scaling and root planing (srp). | 2004 | 15142209 |
| subgingival microbiota of chilean patients with chronic periodontitis. | an association between race/ethnicity and the composition of the subgingival microbiota has been found in chronic periodontitis. a study was undertaken to determine the characteristics of the subgingival microbiota of chronic periodontitis in chileans residing in santiago. | 2004 | 15212354 |
| initial antimicrobial effect of controlled-release doxycycline in subgingival sites. | to determine the ability of a 10% doxycycline hyclate controlled-release polymer (atridox) to suppress periodontopathic bacteria when placed subgingivally following scaling and root planing (sc/rp). | 2004 | 15324352 |
| quantitative detection of periodontopathogens by real-time pcr. | specific bacteria are believed to play an important role in chronic periodontitis, yet the significance of their relative numbers in initiation and progress of the disease is still unclear. we report here the development of a sensitive, quantitative pcr technique for enumerating actinobacillus actinomycetemcomitans (aa), porphyromonas gingivalis (pg), prevotella intermedia (pi), dialister pneumosintes (dp) and micromonas micros (mm) as well as total eubacteria in subgingival plaque samples from ... | 2004 | 15325758 |
| microbiological profile of early onset/aggressive periodontitis patients. | the objectives of this study were to characterize the bacterial profile and to seek possible bacterial associations in the subgingival microbiota of early onset periodontitis/aggressive periodontitis patients by using two different techniques, culture and immunofluorescence. | 2004 | 15327644 |
| relationship of subgingival and salivary microbiota to gingival overgrowth in heart transplant patients following cyclosporin a therapy. | severe gingival overgrowth (go) is induced in patients taking cyclosporin a (csa) following organ transplantation. determining which patient will develop go is still not possible. the purpose of this study was to establish an association between csa and gingival overgrowth in heart transplant patients taking into account periodontal and microbiological conditions. | 2004 | 15341348 |
| clinical and microbiological changes associated with the use of combined antimicrobial therapies to treat "refractory" periodontitis. | the present investigation examined clinical and microbial changes after a combined aggressive antimicrobial therapy in subjects identified as "refractory" to conventional periodontal therapy. | 2004 | 15367191 |
| the effect of periodontal treatment on the salivary bacterial load and early plaque formation. | the purpose of the present study was to investigate in periodontitis patients the relationship between the number of bacteria in the saliva and the amount of de novo plaque formation before and after treatment. | 2004 | 15491312 |
| subgingival microbiota of chronic periodontitis subjects from different geographic locations. | most clinical studies assume that the subgingival microbiota is similar from one geographic location to another. the purpose of the present investigation was to examine the composition of the subgingival microbiota in chronic periodontitis subjects from four countries. | 2004 | 15491316 |
| rate of cultivable subgingival periodontopathogenic bacteria in chronic periodontitis. | although microbiological studies have identified more than 400 bacterial species in periodontal pockets, only a limited number have been implicated as periodontal pathogens. the purpose of this study was to investigate the incidence of cultivable subgingival periodontopathogenic bacteria in chronic periodontitis. bacterial samples were collected with sterile paper points from the deepest periodontal pockets ((5 mm) of 203 patients: 92 males and 111 females, aged 35-55 years. the samples were cul ... | 2004 | 15508748 |
| clinical and microbiological associations in chronic periodontitis. | chronic periodontitis is the most prevalent form of periodontal disease. the subgingival microflora has been associated with the onset and progression of the disease. the aim of this work was to establish associations and correlations between clinical indicators and subgingival plaque microbiological data in patients diagnosed with moderate or severe periodontitis. one hundred sites with a probing depth of > or = 5 mm were selected. plaque index (pi), gingival index (gi), bleeding on probing (bp ... | 2004 | 15584257 |
| periodontal infections and pre-term low birth weight: a case-control study. | pre-term delivery of low-birth-weight infants [pre-term low birth weight (plbw)] remains a significant public health issue and a major cause of neonatal death and long-term health problems. there is a growing consensus that infections remote from fetal-placental unit may influence plbw infants. recent studies have suggested that maternal periodontal disease may be an independent risk factor for plbw. the purpose of the present study was to evaluate the possible link between periodontal infection ... | 2005 | 15691348 |
| micromonas (peptostreptococcus) micros: unusual case of prosthetic joint infection associated with dental procedures. | micromonas (peptostreptococcus) micros is frequently associated with periodontal disease as well as respiratory, gastrointestinal and female genitourinary tract infections, but only rarely has been reported as a pathogenic agent of prosthetic joint infections. here we describe a case of a 63-year-old woman with prosthetic joint infection of total hip arthroplasty caused by the anaerobic species micromonas micros, associated with tooth extraction. samples obtained intraoperatively and from the or ... | 2005 | 15715175 |
| binding of actinobacillus actinomycetemcomitans lipopolysaccharides to peptostreptococcus micros stimulates tumor necrosis factor alpha production by macrophage-like cells. | peptostreptococcus micros is a gram-positive bacterium that has been associated with periodontitis and endodontic infections. in this study, we hypothesized that p. micros binds the immunomodulating component lipopolysaccharide derived from gram-negative bacteria to increase its capacity to stimulate cytokine production by host cells. the ability of p. micros to bind actinobacillus actinomycetemcomitans lipopolysaccharide was demonstrated by an enzyme-linked immunosorbent assay and by immunoelec ... | 2005 | 15720573 |
| tobacco smoking and periodontal microflora in a saudi arabian population. | to explore the subgingival periodontal microflora in a saudi arabian population with a special focus on its relationship with various smoking habits. | 2005 | 15882210 |
| associations between igg antibody to oral organisms and carotid intima-medial thickness in community-dwelling adults. | the aims of this study are to describe the relationships between igg antibodies to 17 oral organisms and atherosclerosis as indexed by carotid intima-medial wall thickness (imt) and to evaluate the role of smoking. | 2005 | 15893320 |
| characteristics of periodontal microflora in acute myocardial infarction. | periodontitis has been linked to increased risk of cardiovascular diseases. systemic reactions associated with cardiovascular events may depend on characteristics of the subgingival microflora in periodontitis. our objectives were to compare the numbers of cultivable bacteria, composition of subgingival microflora and clonal distribution of actinobacillus actinomycetemcomitans (a. actinomycetemcomitans) in two groups of patients with generalized chronic periodontitis (gcp), one with an acute myo ... | 2005 | 15898935 |
| comparison of the antimicrobial activity of six irrigants on primary endodontic pathogens. | the purpose of this study was to compare the antimicrobial activities of 6% and 3% sodium hypochlorite (naocl), 2% and 0.12% chlorhexidine gluconate (chx), and 0.01% and 0.005% doxycycline (doxy) on four microorganisms associated with primary endodontic infections. the agar diffusion test was used to measure antimicrobial activities of these agents against peptostreptococcus micros, prevotella intermedia, streptococcus sanguis, and lactobacillus acidophilus. minimum inhibitory concentration anal ... | 2005 | 15917691 |
| periodontal pathogens: a quantitative comparison of anaerobic culture and real-time pcr. | periodontitis is a multi-factorial chronic inflammatory and destructive disease of the tooth-supporting tissues. quantitative anaerobic culture techniques have been used for microbial diagnosis of the different forms of the disease. the aim of this study was to compare real-time pcr with quantitative anaerobic culture for detection and quantification of 5 prominent periodontal pathogens. real-time pcr assays with the 16s rrna genes of actinobacillus actinomycetemcomitans, prevotella intermedia, ... | 2005 | 15919188 |
| antimicrobial susceptibility variation of 50 anaerobic periopathogens in aggressive periodontitis: an interindividual variability study. | the frequent use of antibiotics in developed countries has led to the emergence of widespread bacterial resistance. in this study, the interindividual variability of the antibiotic susceptibility of 50 putative microorganisms in aggressive periodontitis patients has been evaluated by means of vc (variation coefficient). | 2005 | 15943770 |
| microarrays complement culture methods for identification of bacteria in endodontic infections. | the aim of this study was to investigate the microbial composition of necrotic root canals using culture methods and microarray technology. twenty uniradicular teeth with radiographic evidence of periapical bone loss and with no previous endodontic treatment were selected for this study. for molecular diagnosis a dna chip with 20 different species-specific, 16s-rdna-directed catcher probes was used. the microorganisms most frequently detected by the dna chip were: micromonas micros, fusobacteriu ... | 2005 | 15943771 |
| antimicrobial profiles of periodontal pathogens isolated from periodontitis patients in the netherlands and spain. | antimicrobial resistance of periodontal pathogens towards currently used antibiotics in periodontics has been investigated in a previous study. microbial resistance in the periodontal microflora was more frequently observed in spanish patients in comparison with dutch patients. the aim of the present study was to compare antimicrobial susceptibility profiles of five periodontal bacteria isolated from periodontitis patients in spain and in the netherlands. | 2005 | 15998275 |
| [efficacy variation of erythromycin and spiramycin on periopathogens in aggressive periodontitis. an in vitro comparative study]. | erythromycin (ery) and spiramycin (spi) are the most frequently prescribed macrolides by dentists. however, the emergence of resistant anaerobic subgingival bacteria imposes an increased vigilance. this study aims to compare these macrolides efficacy on principal periopathogens. | 2005 | 16087299 |
| real-time polymerase chain reaction for detection and quantification of bacteria in periodontal patients. | accurate laboratory tests for the detection and quantification of periodontopathogens in subgingival plaque samples of periodontal disease patients are becoming essential to study the pathogenesis of this polymicrobial condition. we used a real-time polymerase chain reaction (pcr) assay for the quantification of actinobacillus actinomycetemcomitans, porphyromonas gingivalis, prevotella intermedia, dialister pneumosintes, campylobacter rectus, and micromonas micros as well as total eubacteria in ... | 2005 | 16171445 |
| antibacterial action of photoactivated disinfection {pad} used on endodontic bacteria in planktonic suspension and in artificial and human root canals. | to measure antibacterial action of photoactivated disinfection (pad) on endodontic bacteria in planktonic suspension and root canals. methods: four bacteria, fusobacterium nucleatum,peptostreptococcus micros, prevotella intermedia and streptococcus intermedius, were tested in suspension. after mixing equal volumes of tolonium chloride and bacterial suspension for 60s, each 200 microl of concentration (>10(6)cfu ml(-1)) was irradiated with light at 633+/-2 nm. each energy dose/tolonium chloride c ... | 2006 | 16239058 |
| the effect of haart on salivary microbiota in the women's interagency hiv study (wihs). | study the prevalence of potentially pathogenic microorganisms in saliva of hiv-positive women in the women's interagency hiv study. | 2005 | 16301151 |
| a case of cutaneous odontogenic sinus. | despite the fact that cutaneous sinus tracts of odontogenic origin are well documented, the condition is still commonly misdiagnosed, because chronic periapical periodontitis may be asymptomatic and is rarely open to the skin. a 75-year-old japanese woman presented to our clinic with the chief complaint of a left cheek skin lesion with mild pain. physical examination revealed a subcutaneous nodule covered with erythematous skin on her left buccal region. cultures from the subcutaneous nodule gre ... | 2005 | 16361742 |
| immediate effect of instrumentation on the subgingival microflora in deep inflamed pockets under strict plaque control. | to investigate (1) reduction in the number of microorganisms obtained directly after subgingival instrumentation, (2) rate of bacterial re-colonization during 2 weeks, under supragingival plaque-free conditions. | 2006 | 16367855 |
| molecular analysis of bacteria in asymptomatic and symptomatic endodontic infections. | the purpose of the present study was to use terminal restriction fragment length polymorphism analysis and the 16s rrna gene clone library to investigate the diversity of the microbiota associated with asymptomatic and symptomatic endodontic infections and to compare the bacterial community structure in these two clinical conditions. samples were taken from asymptomatic endodontic infections associated with chronic periradicular lesions and from symptomatic infections clinically diagnosed as acu ... | 2006 | 16476021 |
| is pre-term labour associated with periodontitis in a danish maternity ward? | to reveal differences in periodontal status and presence of subgingival bacteria in a scandinavian population of women with pre-term birth compared with women who delivered at term. | 2006 | 16489943 |
| two new amino-acid-fermenting bacteria, clostridium propionicum and diplococcus glycinophilus. | 1946 | 16561227 | |
| the additional value of real-time pcr in the quantitative detection of periodontal pathogens. | for the analysis of subgingival plaque, anaerobic bacterial culture has been the gold standard for many years. currently, molecular microbial techniques have become available to identify and quantify target organisms with high specificity and sensitivity. the technique of real-time polymerase chain reaction(rt-pcr) provides a new tool to detect oral pathogens both in oral and non-oral human infections. the aim of this study was to compare the rt-pcr and anaerobic culture for detection and quanti ... | 2006 | 16677332 |
| anaerobic microbiology in 198 cases of pleural empyema: a bulgarian study. | the aim of the study was to evaluate the incidence of anaerobic bacteria in 198 patients with pleural empyema and the susceptibility of isolates to eight antibacterial agents. isolates were identified by the crystal anaerobes identification system, api system rapid id 32 a and/or routine methods. susceptibility was tested by sceptor mic system for anaerobic bacteria and limited agar dilution method. anaerobic bacteria were found in 74.2% of the patients and included 247 strains within 21 genera. ... | 2004 | 16701526 |
| in vitro activity of oritavancin (ly333328), vancomycin, clindamycin, and metronidazole against clostridium perfringens, propionibacterium acnes, and anaerobic gram-positive cocci. | using an agar dilution method, we determined the in vitro activity of oritavancin, vancomycin, clindamycin and metronidazole against 114 unique clinical isolates of gram-positive anaerobes. mic(90)s (microg/ml) for oritavancin were as follows: clostridium perfringens 1.0, propionibacterium acnes 0.25, peptostreptococcus anaerobius 0.25, peptoniphilus asaccharolyticus 0.5, finegoldia magna 0.25, micromonas. micros 0.25, and anaerococcus prevotii 0.25. on a weight basis, oritavancin is slightly mo ... | 2005 | 16701537 |
| periodontal microflora of hiv infected patients with periodontitis. | the aim of this study was to determine the microbial profile of periodontal lesions in hiv seropositive patients and to compare it with rapidly progressing periodontal lesions in systemically healthy patients. the subgingival microflora of 20 cdc ii, 20 cdc iii, 20 cdc iv/v and 20 systemically healthy patients with rapidly progressing periodontitis was examined. four sites with greatest probing depth in each patient were selected for microbiological sampling. the samples were cultured aerobicall ... | 1997 | 16887570 |
| subgingival microflora in smokers with early onset periodontitis. | cigarette smoking is a potent risk factor which has recently been associated with periodontal disease progression. the objective of this study was to detect the microbial profile of early onset periodontitis in smokers and compare it to that of non-smokers. the study population consisted of 50 systemically healthy individuals aged 25 to 38 years, exhibiting early onset periodontitis. 25 patients were smokers (> 20 cigarettes/day) and 25 non-smokers. two pooled bacterial samples comprised of four ... | 1997 | 16887581 |
| e-test antibiotics susceptibility of strict anaerobic bacteria. | the e-test is convenient for testing susceptibility of anaerobes. from september 1998 to september 1999, 194 strains (105 gram-positive bacteria, 89 gram-negative bacteria) of clinically relevant samples were tested against five antibiotics benzylpenicillin, amoxicillin-clavulanic acid, clindamycin, metronidazole and imipenem on blood agar plates. resistance to benzyl penicillin is widespread and gram-negative bacteria and resistance to amoxicillin-clavulanic acid is exceptional. metronidazole i ... | 2003 | 16887712 |
| contribution of proteases and plasmin-acquired activity in migration of peptostreptococcus micros through a reconstituted basement membrane. | peptostreptococcus micros is a gram-positive bacterium that has been associated with chronic periodontitis and endodontic infections. the aims of this study were to investigate the production of proteases and the acquisition of plasmin activity by rough and smooth morphotypes of p. micros. the contribution of these properties in the migration of bacteria through a reconstituted basement membrane was also evaluated. | 2006 | 16922932 |
| periodontal status in smokers and never-smokers: clinical findings and real-time polymerase chain reaction quantification of putative periodontal pathogens. | smoking is a well-known risk factor for destructive periodontal disease, but its relationship with periodontal status and subgingival microbiota remains unclear. inherent limitations of microbiological methods previously used may partly explain these mixed results, and real-time polymerase chain reaction (pcr) has been presented as a valid alternative. the aim of the present study was to investigate the clinical condition and microbiological profile of patients with chronic periodontitis as rela ... | 2006 | 16945023 |
| red autofluorescence of dental plaque bacteria. | red autofluorescence of plaque and its relation to fluorescence of a single species in the biofilm was studied. fluorescence images of non-disclosed and disclosed plaque of 28 first-year students were captured. the plaque samples were assessed by culture methods and studied for red autofluorescence. species capable of producing red autofluorescence were cultivated from subjects with and without red plaque autofluorescence. red autofluorescence was observed from actinomyces odontolyticus, prevote ... | 2006 | 17063027 |
| phylogenetic analysis of bacterial and archaeal species in symptomatic and asymptomatic endodontic infections. | phylogenetic analysis of bacterial and archaeal 16s rrna was used to examine polymicrobial communities within infected root canals of 20 symptomatic and 14 asymptomatic patients. nucleotide sequences from approximately 750 clones amplified from each patient group with universal bacterial primers were matched to the ribosomal database project ii database. phylotypes from 37 genera representing actinobacteria, bacteroidetes, firmicutes, fusobacteria and proteobacteria were identified. results were ... | 2007 | 17172525 |
| human serum activity of telithromycin, azithromycin and amoxicillin/clavulanate against common aerobic and anaerobic respiratory pathogens. | telithromycin is a new ketolide antimicrobial with a good in vitro activity against both aerobic and anaerobic respiratory pathogens. in this study, we evaluated the antibacterial activity over time of telithromycin (800mg), azithromycin (500mg), and amoxicillin/clavulanate (875/125mg) in serum following single oral doses of these agents to 10 healthy subjects. inhibitory and bactericidal titers were determined at 2, 6, 12, and 24h after each dose and the median titer was used to determine antib ... | 2007 | 17189093 |
| comparison of subgingival bacterial sampling with oral lavage for detection and quantification of periodontal pathogens by real-time polymerase chain reaction. | saliva has been studied for the presence of subgingival pathogens in periodontitis patients. with the anaerobic culture technique, the discrepancy between salivary recovery and subgingival presence has been significant, which makes this approach not suitable for practical use in the microbial diagnosis of periodontitis patients. the real-time polymerase chain reaction (pcr) technique represents a very sensitive technique to detect and quantify bacterial pathogens. the aim of the study was to com ... | 2007 | 17199543 |
| identification and antibiotic susceptibility of bacterial isolates from probiotic products available in italy. | this study was carried out to assay the bacterial viability and the probable contamination of a range of probiotic products available in italy and to test the susceptibility of the isolates. eleven dried food supplements and five fermented functional foods were examined using different isolation media under standardized cultivation conditions. the identification was made by conventional phenotypic characteristics and biochemical tests. among isolates from the probiotic products antibiotic suscep ... | 2006 | 17201095 |
| hemin nutritional stress inhibits bacterial invasion of radicular dentine by two endodontic anaerobes. | to determine if anaerobic bacteria routinely found in infected dentine and root canals require the presence of heme in the environment in order for them to invade dentinal tubules. | 2007 | 17229113 |
| women with a recent history of early-onset pre-eclampsia have a worse periodontal condition. | pre-eclampsia is a complication of pregnancy characterized by systemic vascular dysfunction and pathological changes in placental arteries. growing evidence of chronic infection as an aetiological factor in vascular diseases prompted us to study maternal periodontal disease in subjects with early-onset pre-eclampsia (<34 weeks). | 2007 | 17309594 |
| infection at titanium implants with or without a clinical diagnosis of inflammation. | to assess the microbiota at implants diagnosed with peri-implantitis, implant mucositis, or being clinically healthy. | 2007 | 17517058 |
| [subgingival microbiota in chronic and aggressive periodontitis in bogotá, colombia: an epidemiological approach]. | periodontitis-associated microbiotas differ in regions around the world and vary with a variety of factors. this suggests that each country must establish its own dental microbiobiotic profile in order to formulate adequate prevention measures and more specific treatments. | 2007 | 17546221 |
| cultivable bacteria in infected root canals as identified by 16s rrna gene sequencing. | introduction: traditionally, cultivable bacteria isolated from infected root canals have been identified by phenotype-based methods. because 16s ribosomal rna (rrna) gene sequencing has emerged as a more accurate and reliable tool for bacterial identification, the present study applied this approach to identify bacterial isolates recovered from the root canals of teeth with chronic apical periodontitis. methods: anaerobic techniques were used for culturing; identification of the isolates was car ... | 2007 | 17600539 |
| antimicrobial susceptibility of 800 anaerobic isolates from patients with dentoalveolar infection to 13 oral antibiotics. | the aim of this study was to determine the current antimicrobial susceptibility of the principle anaerobic pathogens involved in dentoalveolar infection, to 13 oral antibiotics, and to assess the value of each antibiotic in the management of the infection. | 2007 | 17600542 |
| middle meatus bacteriology of acute rhinosinusitis in patients after irradiation of nasopharynx. | patients who undergo radiotherapy for nasopharyngeal carcinoma (npc) tend to suffer from rhinosinusitis because irradiation causes damage to sinonasal tissue; however, their bacteriology is lacking in the literature. the aim of this study was to determine the bacteriology and antibiotic resistance in acute rhinosinusitis (ars) of these patients. | 2007 | 17621810 |
| targeted profiling of oral bacteria in human saliva and in vitro biofilms with quantitative real-time pcr. | an in vitro plaque model based on the use of human salivary bacteria and tooth-like surfaces was previously developed for studying the formation of oral biofilm and its use for pre-clinical testing of candidate antimicrobial or antiplaque agents. in this study, a quantitative taqman pcr assay (qpcr) was developed to compare the bacterial compositions of in vitro biofilms to parent saliva samples, and to determine the relative contributions of different species in the formation of the oral biofil ... | 2007 | 17653931 |
| development of 16s rrna-based probes for the identification of gram-positive anaerobic cocci isolated from human clinical specimens. | fluorescent probes targeted at 16s rrna were designed for peptostreptococcus anaerobius and peptostreptococcus stomatis (pana134), parvimonas micra (pamic1435), finegoldia magna (fmag1250), peptoniphilus asaccharolyticus (pnasa1254), peptoniphilus ivorii (pnivo731), peptoniphilus harei (pnhar1466), anaerococcus vaginalis (avag1280) and anaerococcus lactolyticus (alac1438), based on the 16s rrna sequences of reference strains and 88 randomly chosen clinical isolates. these strains were also used ... | 2007 | 17714522 |
| periodontal microbiota in patients with coronary artery disease measured by real-time polymerase chain reaction: a case-control study. | recent data have shown that periodontal disease may increase the risk of occurrence of coronary heart disease in which inflammation initiated by bacteria and their compounds might be a common causal factor. this case-control study aimed at studying the relationship between periodontal disease and coronary artery disease (cad) based on clinical and periodontal microbiologic parameters. | 2007 | 17760542 |
| comparison of growth and susceptibility to sodium hypochlorite of mono- and dual-species biofilms of fusobacterium nucleatum and peptostreptococcus (micromonas) micros. | this study compared growth and susceptibility to different concentrations of sodium hypochlorite (naocl) of mono- and dual-species biofilms of fusobacterium nucleatum or peptostreptococcus micros in vitro at 24 hours or 96 hours. a mann-whitney u test revealed that although at 24 hours dual-species biofilms had similar viable counts to those of monospecies biofilms (p > 0.001), they were more resistant to naocl (p < 0.001). at 96 hours, both microorganisms had higher viable counts and were more ... | 2007 | 17804319 |
| periodontopathic microorganisms in peripheric blood after scaling and root planing. | the objective of this study was to evaluate the frequency of periodontopathic and other subgingival anaerobic and facultative bacteria in the bloodstream following scaling and root planing (srp). | 2007 | 17850606 |
| degradation of serine-containing oligopeptides by peptostreptococcus micros atcc 33270. | microorganisms of peptostreptococcus micros are asaccharolytic, anaerobic gram-positive cocci that are frequently isolated from human oral sites such as periodontal pockets. preliminary study showed that several amino acids, including serine, enhanced slightly the growth of p. micros. therefore, we investigated the degradation of serine and serine-containing oligopeptides. | 2007 | 17949340 |
| evaluation of the microbiota of primary endodontic infections using checkerboard dna-dna hybridization. | the aim of this study was to evaluate the composition of the microbiota of primary endodontic infections in 111 selected cases of single-rooted teeth with necrotic pulp. | 2007 | 17949342 |
| bacterial examination of endodontic infections by clonal analysis in concert with denaturing high-performance liquid chromatography. | the aim of this study was to examine the diversity of bacterial species in the infected root canals of teeth associated with endodontic abscesses by cloning and sequencing techniques in concert with denaturing high-performance liquid chromatography. | 2007 | 17949344 |
| peptostreptococcus micros cell wall elicits a pro-inflammatory response in human macrophages. | peptostreptococcus micros is a gram-positive anaerobic bacterium associated with periodontitis, a chronic inflammatory disease affecting tooth-supporting tissues. in the present study, we investigated the response of human macrophages to stimulation with a cell wall preparation from p. micros. in addition, the effect of the preparation on the phosphorylation of macrophage kinases was studied. the preparation, which was non-toxic for macrophages, significantly increased the secretion of the pro-i ... | 2007 | 17956940 |
| subgingival microbial profiles in chronic periodontitis patients from chile, colombia and spain. | to investigate the subgingival microbiota of distinct periodontitis patient populations, in chile, colombia and spain, using identical clinical and bacteriological methods. | 2008 | 18081862 |
| [a case of bacteremia by atopobium rimae in a patient with liver cirrhosis]. | atopobium rimae, previously lactobacillus rimae, is a strictly anaerobic, non-spore forming grampositive rod which was frequently isolated from odontogenic infection. we report a case of a. rimae bacteremia. a 47-yr-old man with liver cirrhosis was admitted to the hospital via emergency room due to fever and chill. his abdominal and pelvic computed tomography revealed a small abscess near the left adrenal gland. three sets of blood cultures were taken and non-spore forming, grampositive rods wer ... | 2007 | 18094600 |
| european surveillance study on antimicrobial susceptibility of gram-positive anaerobic cocci. | gram-positive anaerobic cocci (gpac) are a heterogeneous group of microorganisms frequently isolated from local and systemic infections. in this study, the antimicrobial susceptibilities of clinical strains isolated in 10 european countries were investigated. after identification of 299 gpac to species level, the minimum inhibitory concentrations of penicillin, imipenem, clindamycin, metronidazole, vancomycin and linezolid were determined by the agar dilution method according to the clinical and ... | 2008 | 18180149 |
| smap29 congeners demonstrate activity against oral bacteria and reduced toxicity against oral keratinocytes. | cathelicidins are antimicrobial peptides found in epithelial and mucosal tissues as well as the secondary granules of neutrophils. smap29, a sheep cathelicidin, has differential antimicrobial properties against various pathogens, including periodontal organisms. the purpose of this study was to evaluate the antimicrobial properties and cytotoxicity of smap29, smap28, and three congeners (smap18a, smap18d, and smap14a). | 2008 | 18279175 |
| clinical and microbiological determinants of ailing dental implants. | the failure of the host tissue to establish or maintain osseointegration around dental implants is due to either occlusal or parafunctional forces, premature loading, ill-directed stress, or microbial infection. the long-term failure rate of dental implants is generally 5-10%. although a variety of etiologies of early peri-implant bone loss (from implant placement to 1-year post-loading) have been proposed, factors associated with late implant failures are less well understood but are probably r ... | 2009 | 18384407 |
| bleeding on probing differentially relates to bacterial profiles: the oral infections and vascular disease epidemiology study. | various bacterial species are differentially prevalent in periodontal health, gingivitis or periodontitis. we tested the independent associations between three bacterial groupings and gingival inflammation in an epidemiological study. | 2008 | 18400025 |
| [microbiological and biochemical characteristics of inflammatory tissues in the periodontium]. | to investigate bacterial populations in subgingival and supragingival plaque samples of patients with inflammatory periodontal diseases and activities of the lysosomal enzymes--lysozyme, alkaline phosphatase, and beta-glucuronidase--in peripheral venous blood, in gingival crevicular fluid, and mixed nonstimulated saliva. | 2008 | 18413987 |
| microbial analysis of canals of root-filled teeth with periapical lesions using polymerase chain reaction. | the objective of the present study was to investigate the presence of nine bacterial species in root-filled teeth associated with periapical lesions using a polymerase chain reaction analysis and to correlate these species with clinical features of the cases. dna was extracted from 45 canal samples of root-filled teeth with periapical lesions. a pcr assay using species-specific primers of 16s rdna and the downstream intergenic spacer region was used for microbial detection. enterococcus faecalis ... | 2008 | 18436030 |
| [prediction on the efficacy of fluoroquinolones for anaerobic infections using monte carlo simulation]. | various analysis based on pk-pd (pharmacokinetics-pharmacodynamics) theory were performed for prediction on the efficacy of antimicrobial agents for infectious diseases. however, there have been few reports when causative organisms would be anaerobic bacteria. although the antimicrobial activity of fluoroquinolones against anaerobes has been weak, gatifloxacin (gflx), moxifloxacin (mflx), and garenoxacin (grnx) are considered as anti-anaerobic quinolones in recent days. therefore, we investigate ... | 2007 | 18447205 |
| photodynamic therapy as adjunct to non-surgical periodontal treatment in patients on periodontal maintenance: a randomized controlled clinical trial. | recent preclinical and clinical data have suggested the potential benefit of photodynamic therapy (pdt) in the treatment of periodontitis. however, currently, there are very limited data from controlled clinical trials evaluating the effect of pdt in the treatment of periodontitis. the aim of the present study was to evaluate the clinical and microbiological effects of the adjunctive use of pdt in non-surgical periodontal treatment in patients receiving supportive periodontal therapy. twenty-fou ... | 2009 | 18465191 |
| assessment of the microbiota in root canals of human primary teeth by checkerboard dna-dna hybridization. | the purpose of this study was to evaluate in vivo the prevalence of microorganisms in root canals of human primary teeth, by checkerboard dna-dna hybridization. | 2007 | 18477431 |
| campylobacter species isolated from extra-oro-intestinal abscesses: a report of four cases and literature review. | campylobacter species are frequently isolated from fecal specimens of patients with diarrheal illness. several campylobacter species are commonly isolated from the oral cavity. in contrast, campylobacter species are rarely isolated from extra-oro-intestinal abscesses. reported here are four cases of extra-oro-intestinal abscesses due to polymicrobial flora, including campylobacter species. the first case is a 35-year-old woman who was diagnosed with a brain abscess caused by c. gracilis, strepto ... | 2008 | 18488257 |
| staphylococcus aureus and other bacteria in untreated periodontitis. | whether the subgingival microbiota differ between individuals with chronic and those with aggressive periodontitis, and whether smoking influences bacterial composition, is controversial. we hypothesized that the subgingival microbiota do not differ between sites in individuals with chronic or aggressive periodontitis, or by smoking status. bacterial counts and proportional distributions were assessed in 84 individuals with chronic periodontitis and 22 with aggressive periodontitis. no differenc ... | 2008 | 18502971 |
| [periodontitis and cardiovascular disease]. | the prevalence of periodontitis and cardiovascular disease (cvd) is high. a mixed infectious biofilm etiology of periodontitis is known but not fully established in cvd. cofactors; smoking habits, stress, ethnicity, genetics, socioeconomics and age contribute to both diseases. the objectives of this report are to summarize factors in regards to cvd and periodontitis that are clinically relevant. the hypothesis behind a relationship between the two conditions can be founded in (i) shared infectio ... | 2008 | 18517068 |
| pcr-based identification of selected pathogens associated with endodontic infections in deciduous and permanent teeth. | the aim of the present study was to evaluate the presence of the selected pathogens in samples from deciduous and permanent tooth root canals by using pcr method and to determine the association of these organisms with clinical symptoms. | 2008 | 18547832 |
| comparative analysis of endodontic pathogens using checkerboard hybridization in relation to culture. | the purpose of this study was to detect bacterial species and to quantify the total number of bacteria from samples of infected root canals before (s1) and after chemo-mechanical preparation using 2% chlorhexidine (chx) gel as auxiliary chemical substance (s2) and after 7 days of intracanal dressing (s3) to compare microbial changes. | 2008 | 18582327 |
| root canal microbiota of teeth with chronic apical periodontitis. | samples from infected root canals of 43 teeth with chronic apical periodontitis were analyzed for the presence and relative levels of 83 oral bacterial species and/or phylotypes using a reverse-capture checkerboard hybridization assay. associations between the most frequently detected taxa were also recorded. the most prevalent taxa were olsenella uli (74%), eikenella corrodens (63%), porphyromonas endodontalis (56%), peptostreptococcus anaerobius (54%), and bacteroidetes oral clone x083 (51%). ... | 2008 | 18768651 |