摘要:

AbstractThis study analysed data on periodontal reasons for tooth extractions, obtained from 52 dentists practising general dentistry in Singapore. The results revealed that, out of 2172 teeth extracted from 1276 patients. 35.8% were lost due to periodontal disease and 35.4% due to caries. Extraction due to periodontal problems increased with age. were more conspicuous in the Indian ethnic group and were frequently associated with pocketing and tooth mobility.

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00550.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThis study was designed to investigate, using 6 beagle dogs, the levels of selected putative pathogens in healthy sites, in gingivitis sites, and in sites with histologically confirmed attachment loss. Levels of attachment loss increased with increasing periods of ligation and reached a maximum of 0.15 mm at 57 days. Both histological attachment level and histological pocket depth were found to vary significantly with health/disease status (P<0.0001). Higher numbers of total colony‐forming units were seen for ligated sites than for healthy and gingivitis sites. Levels of Purphyromonas gingivalis and Prevotella intermedia also changed significantly with health/disease status (p<0.001). These organisms showed their greatest increases at the time of the most intense attachment loss. Higher levels of Fusobaeterium nucleatum were seen in the gingivitis sites than in healthy or Heated sites. Low levels of Campylobacter rectus and Capnocytophaga spp. were detected throughout. The morphometric microbiological analysis revealed unexpectedly high %s of motile rods, while spirochetes were found in very low %s. The total number of bacterial cells detected using phase contrast microscopy was not found to vary significantly. None of the morphotypes were demonstrated as showing significant changes with health/disease statu

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00551.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThis study compared 2 proprietary chlorhexidine (CH) products, Corsodyl (CO ‐ 0.2% CH. then ICI. U.K.) and Eludril (EL ‐ 0.1% CH. Pierre Fabre. France) as subgingival irrigants adjunctive to Simplified Oral Hygiene. 19 subjects. 8M, HE aged 30‐57 years, mean 44 years, took part. Probing pocket depth (PPD) ranged from 5‐10 mm, mean 6.5 mm (CO and EL), with 60 CO and 65 EL sites. After oral hygiene instruction, without stress on interdental cleaning, patients received one visit supra‐ and subgingival debridement. and instruction in subgingival irrigation using the Max‐I‐Probe system (Smith&Nephew MPL, USA). For baseline, days 28 (end of irrigation). 56 and 84. data were respectively: GI (medians): 1.7. 1.2. 1.2. 1.0 (CO). 1.9. 1.5, 1.3. 1.0 EL): BOP (medians): 1.2, 0.4. 0.7. 0.4 (CO), 1.5. 0.6. 0.6, 0.25 (EL): PPD (mm) (means): 6.3. 4.8, 4.2, 4.5 (CO). 6.8, 5.2, 5.3. 4.7 (EL); PAL (mm) (means‐change relative to day 0): 0.6, 0.5. 0.8 (CO), 0.8. 0.8. 1.5 (EL). By Wilcoxon for non‐parametric and /‐tests for parametric data, both groups showed significant improvement for all variables at all times relative to baseline, with only one significant difference between the groups, in favour of EL, for PAL at day 84 (p<0.05). This pilot study indicates that both simplified oral hygiene regimes are effective in periodontitis. but that there was no difference between the 2 commercial irrig

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00552.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe goal of the present study was to determine whether the clinical treatment results in terms of pocket probing depth reduction and attachment gain would be different following conventional periodontal flap surgery if, on the one hand, root surfaces were smoothed after plaque and calculus removal or, on the other hand, root surfaces were first thoroughly cleaned but then intentionally roughened. 13 adult patients with moderate periodontitis participated: the same patients acted as a unit of control. Evaluations were performed on a total of 224 sites on 81 anterior and premolar teeth. On the 41 test teeth (111 sites). a coarse diamond stone was used following traditional root planing to roughen the root surfaces. The 40 control teeth (113 sites) were cleaned and planed using Gracey curettes. Measurements performed 3 and 6 months post‐surgery revealed significant reductions in probing depths at both “rough” and “smooth” sites. However, no differences between the 2 methods were detected. This was true also with regard to attachment gain. We conclude that striving for root surface smoothness during periodontal surgery appears un

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00553.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe present study was designed to determine, in a cross‐sectional study, whether there was any relationship between the keratin‐positive material in gingival crevicular fluid and the clinical periodontal status. Keratins were selected as putative indicators of degradation of epithelial cells cytoskeletal proteins. Keratin positive material was determined by enzyme‐linked immunosorbent assay‐in 42 subjects exhibiting clinical sites of health, chronic gingivitis and chronic periodontitis. The concentration of keratin in parotid saliva was also measured for each subject. Keratin concentration in gingival crevicular fluid samples was significantly greater at sites exhibiting signs of gingivitis and periodontitis compared with healthy sites. No differences were detected between sites exhibiting gingivitis and periodontitis. No differences were found between the 3 groups for the saliva keratin‐positive material which was significantly less than that detected in gingival crevicular fluid. These results suggest that gingival crevicular fluid keratin concentration may serve as a marker of gingiv

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00554.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractIn a previous study, subjects receiving either adjunctive tetracycline or Augmentin showed, on average, more attachment level gain 10 months post‐therapy than subjects receiving either Ibuprofen or a placebo, although some subjects in each treatment group showed loss of attachment posttherapy. Since differences in treatment response might have been due to differences in the sub‐gingival microbiota, the response to different therapies in subjects with different pretherapy subgmgival microbiotas was evaluated. 29 subjects exhibiting loss of attachment>2.5 mm at t or more sites during longitudinal monitoring were treated by modified Widman flap surgery at deep sites, subgingival scaling at all other sites and were randomly assigned one of the following agents: Augmentm. tetracycline. ibuprofen or a placebo. Treatment was completed within 30 days, during which time the subject took the assigned agent. Subgingival plaque samples were taken from the mesial surface of each tooth a! each visit and evaluated for their content of 14 subgingival species includingP. gingivalis. P. nigrescens. P. intermediaandB. forsythususing DNA probes. 18 subjects with mean counts>105of2or more of these 4 species comprised the high test species group: 11 subjects with mean counts>105of 0 or 1 of the species, the low lest species group. Because this was a post‐hoc analysis, the number of subjects in some of the treatment/test species groups was small. However, the 8 high test species subjects who received tetracycline showed the most attachment level gain (G.83±0.20 mm), while the 3 tetracycline‐treated. low test species subjects showed minimal gain (0.05±0.28 mm) 10 months post‐therapy. Low test species subjects receiving Augmentin (n=2) showed a mean gain in attachment of 0.67 (±0.59) mm. The mean % of sites showing either attachment gain or loss ≥2 mm was computed for each treatment/test species group. High test species subjects receiving tetracycline exhibited the best ratio of gaining to losing sites (16.2), followed by low test species subjects receiving Augmentin (14.1). Periodontal pockets6 mm, particularly in subjects receiving adjunctive tetracycline. Overall, the data indicated that a gain in mean attachment level post‐therapy was significantly associated (p<0.001) with an increase inC. ochraceuaccompanied by a decrease inB. forsythus, P. gingivalis. P. intermediaandP. nigrescens.The 4 test species were decreased more in subjects receiving tetracycline. In contrast, Augmentin appeared to be effective in decreasing the % sites colonized byA. actinomycetemcomitansand in increasing the proportion of sites colonized byC. ochracea.Knowledge of the baseline microbiota should improve the choice of an appropriate adjunctive antibiotic for p

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00555.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe predictive utility of 5 major putative periodontopathic microbial species, “superinfecting” organisms, and several clinical periodontal parameters were assessed relative to periodontitis recurrence over a 12‐month period in 78 treated adult patients participating in a 3‐month maintenance care program. At baseline, pooled subgingival microbial samples were collected from each patient, and whole‐mouth evaluations of probing depth, relative periodontal attachment level, furcation involvement, and indices of plaque and gingival inflammation were carried out. 67 (85.9%) subjects were culture‐positive at baseline for presence of either Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia. Campylobacter rectus or Peptostreptococcus micros, with 48 (61.5%) subjects yielding one or more of these species at or above designated threshold proportions of ≥0.01% for A. actinomycetemcomitans, ≥0.1% forP. gmgivalis, ≥2.5% forP. intermedia, ≥2.0% forC. rectus, and ≥3.0% forP. micros.Subgingival yeasts were recovered from 12 subjects, staphylococci from 7, and enteric rods/pseudomonads from 6; however, no subjects revealed 21.0% baseline proportions of these “superinfecting” organisms in subgingival specimens. Periodontitis recurrence in subjects was defined as any periodontal site exhibiting either a probing depth increase of 2:3 mm from baseline, or a probing depth increase of 22 mm from baseline together with a loss in relative periodontal attachment of 22 mm from baseline. 15 (19.2%) study subjects showed periodontitis recurrence within 6 months of baseline, and 25 (32.1%) within 12 months. The mere baseline presence of the 5 major test species and “superinfecting” organisms were not significant predictors of periodontilis recurrence over 12 months. However, a 2.5 relative risk for periodontitis recurrence over 12 months was found for subjects yielding one or more of the 5 major test species at or above the designated baseline threshold proportions (p=0.022. Mantel‐Haenszel %2 test). The positive predictive value for periodontitis recurrence of a microbiologic analysis encompassing the 5 major test species at or above the designated threshold proportions improved with increasing time from baseline, up to approximately 42% at 12 months. Baseline variables jointly providing in multiple regression analysis the best predictive capability for periodontitis recurrence in subjects over a 12‐month period were recovery of one or more of the 5 major test species at or above designated threshold proportions, the proportion of sites per subject with 25 mm probing depth, and the mean whole‐mouth probing depth. These findings indicate that one or more of 5 major putative periodontal pathogens in elevated subgingival proportions together with increased probing depth predispose adults on maintena

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00556.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe relationship between CPITN sextant scores and periodontitis recurrence at individual tooth sites was evaluated in a longitudinal study in 83 treated adult periodontitis patients receiving systematic 3‐month maintenance care. At baseline and semi‐annual examinations over 36 months. CPITN scores were assigned to each dentition sextant using probing depths and gingival index scores, and relative periodomal attachment level was assessed at individual tooth sites using an occlusal reference stent. Periodontitis recurrence was defined as any periodontal site exhibiting either a probing depth increase of ≥3 mm from baseline, or a probing depth increase of s 1 mm from baseline together with a loss of relative periodontal attachment of ≥2 mm from baseline. 49 (59.0%) subjects developed periodontitis recurrence in 147 (29.8%) sextants at 181 (2.2%) individual periodontal sites during the 36‐month study period. Baseline CPITN scores of 4 were more common in disease‐active subjects than clinically‐stable subjects (p= 0.003. /‐test), and were associated with a statistically significant 1.66 relative risk of periodonlitis recurrence within 36 months. CPITN sextant scores of 3 or 4 showed low specificity and low positive predictive values as indicators of periodontitis recurrence at s= 1 individual sites within the affected sextant. In comparison, low CPITN sextant scores (0‐2) provided high specificity (96.2‐100%). high positive predictive values (99.5‐100%), and a summary odds ratio of 24.2 as an indicator of clinical stability at all periodontal sites within a given dentition sextant. Changes in sextant scores for CPITN over 6‐month periods showed no relationship with periodontitis recurrence at individual periodontal sites. This study suggests that while CPITN is inadequate for detection of periodontitis recurrence, low CPITN scores provide rapid presumptive identification of clinically‐stable sextants in adult periodontitis pat

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00557.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe periodontal status of 77 diabetic children and adolescents, and 77 paired, systemically‐healthy, sex‐ and age‐matched control subjects, was clinical examined. Fasting blood glucose, fructosamine and glycosylated haemoglobin (HbAl) values were determined. The mean periodontal pocket depths, clinical attachment levels and the parameters to assess diabetes mellitus from the diabetic group were significantly higher than those of the controls. We found a positive correlation between the duration of diabetes and clinical attachment loss, but not with periodontal probing depth, plaque index and gingival index in the diabetic group. A positive correlation was also assessed between the present serum fructosamine and gingival index in the diabetic group, but not in con

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00558.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThe distribution of gingival overgrowth was investigated in a cohort of organ transplant patients, who were medicated with cyclosporin or the combination of cyclosporin and a calcium channel blocking drug. Gingival overgrowth scores were significantly higher at buceal sites than lingual‐palatally (p0.044) and was similar to that in the molar and premolar region. Although raised overgrowth scores were associated with increased levels of plaque and gingival inflammation, the distribution could not be explained by this observatio

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1996.tb00559.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY