摘要:

Abstract28 children aged 6–13 years, with gingival recession localized to mandibular incisors, were monitored longitudinally to evaluate any changes of the labial periodontal tissues. Measurements included dental plaque, gingival inflammation, gingival recession, probing depth, probing attachment level, keratinized and attached gingiva. Following baseline examination, the incisors were observed at yearly intervals over 3 years. The results showed that a high level of oral hygiene was maintained and that gingival inflammation occurred only to a minor degree throughout the observation period. Gradual reductions in the amount of gingival recession and probing attachment levels took place in all children except for 1 of the subjects with 1 severely malpositioned tooth. Probing depths and widths of keratinized and attached gingiva remained relatively unchanged. The finding that gingival recession in mandibular incisors in young children often improves over time suggests that preventive or reparative treatment in this part of the developing dentition may not be necessary. Decisions about such treatment should be postponed until any spontaneous improvement has taken plac

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01127.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThis paper describes levels and progression of supra‐ and subgingival calculus undisturbed by active professional intervention or home care between 1970 and 1985 in Sri Lanka, or when removed at regular intervals between 1969 and 1988 in Norway. In the Sri Lankan tea laborers, both supra‐ and subgingival calculus formation started before age 14 years. At 40 years of age, all participants and almost all teeth and tooth surfaces had calculus. Tea laborers who both smoked tobacco and chewed betel had significantly higher calculus scores than those who only had one of these habits, and those who neither chewed nor smoked had the lowest calculus scores. Teeth with calculus showed a significantly higher rate of loss of attachment than teeth that remained calculus free. For the Norwegians who had enjoyed regular dental care throughout their lives, supragingival calculus did not increase in frequency from adolescence to the forties. Approximately 70% of the interproximal surfaces were calculus free after 40–50 years of age. Subgingival calculus scores, although low, showed some increase with longer times of exposure. On average, each person had 0.4 inter‐proximal surfaces with subgingival calculus as they approached 50 years of age. In this Norwegian population, subgingival calculus had no impact on loss of att

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01128.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractFew systematic studies have been made of amounts or of the composition of gingival crevicular fluid (GCF) from different sites or of the stability of GCF parameters over time. These data are needed to better understand the relation of GCF composition to periodontal health status. This report gives the volume and the amounts of lactate dehydrogenase (LDH), aryl sulfatase (AS) and neutrophil elastase (NE) for GCF collected from 6 samplings of 6 standard gingival sites in 11 young adult subjects over a 6–week period. Attachment loss (3 mm) was noted at only 1 of the 66 sites. The mean gingival index of the 11 subjects ranged from 0.33 to 1.67. The GCF volume and activity/sample of LDH and AS but not NE differed among subjects. However, differences among subjects were not found when the GCF enzyme activities were expressed as activity/μl GCF. GCF volume and LDH, AS and NE activity all differed among the 6 sites when the activities were expressed as either quantity/sample or μl GCF. These data show that differences among sites must be carefully considered in evaluation of GCF data. Fluid volume and LDH, AS and NE activity all varied from sampling to sampling. However, differences among sites were retained throughout the experimental per

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01129.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThe effects on chronic periodontitis of a simplified oral hygiene regimen combined with subgingival irrigation with 0.5% metronidazole were investigated. 19 patients, with 548 pockets ≥4 mm, completed a 3–month randomised double‐blind placebo‐controlled trial. At day 0, prior to treatment, and at days 7, 28, 56 and 84, plaque index, sulcus bleeding index and probeable pocket depth were recorded. The simplified oral hygiene regimen consisted of (1) one episode of root debridement, removal of subgingival approximal overhangs on restorations and subcontact area debridement with abrasive strips and polishing, and (2) instruction in Bass brushing (twice daily) with no stress on interdental cleaning. After baseline debridement, patients were allocated 0.5% metronidazole or a placebo. They were instructed to irrigate subgingivally once daily for 28 days. Treatment resulted in marked improvement in both groups and proportionately more sites improved in the metronidazole group at 28, 56 and 84 days. There were no significant differences between the procedures at any time. It was concluded that a simplified oral hygiene regimen combined with daily subgingival irrigation with 0.5% metronidazole or a placebo was effective in reducing periodontitis for at least a further 8 weeks, and that proportionately more sites improved in the meronidazol

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01130.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractIn 1971–72, a total of 375 adult subjects were recruited for a clinical trial aimed at assessing the effect of a preventive program, based on plaque control and topical application of fluoride, on the incidence of caries and periodontal disease. After a baseline examination, the volunteers were subjected to scaling, root planing and conventional caries therapy. During the course of the subsequent 6 years, they were recalled for preventive measures once every 2–3 months. After the 6–year follow‐up examination, however, it was decided to extend the interval between the preventive sessions. Thus, during the next 9–year period, about 95% of the participants returned for preventive measures only 1 to 2 times per year. A small subgroup of about 15 subjects, who, during the initial 6 years had developed new caries lesions or had exhibited additional periodontal attachment loss, however, were also during the following 9 years recalled 3–6 times per year for oral hygiene control and preventive therapy. The re‐examination performed in 1987 disclosed that the 317 subjects, who participated during the entire 15‐year period, had a low incidence of caries and almost no further loss of periodontal tissue support. It was suggested that improved self performed oral hygiene, daily use of fluoridated dentifrice and regularly repeated professional tooth cleaning effectively prevented recurrence of

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01131.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractHuman gingival fibroblasts were used to study the effects of increasing concentrations of glucose on protein, collagen and glycosaminoglycan (GAG) synthesis. GAG‐synthesis was measured as incorporation of3H‐glucosamine into pronase‐resistant macromolecules and collagen synthesis was evaluated by3H‐proline incorporation into collagenase‐sensitive protein. Incubation of the fibroblasts with glucose concentration ranging from 5 to 50 mM resulted in a dose‐dependent reduction of collagen synthesis; labeled collagen in the culture medium was reduced to 60% of the control incubation (5mM glucose) when incubated with 50 mM glucose for 72 h. Cell‐associated radioactivity was decreased to 80% under the same conditions. Although3H‐glycosamine incorporation into GAGs was reduced by increasing glucose concentrations (5 to 20 mM), protein synthesis and cell number were not influenced under the same conditions, as was also the case with distribution of macromolecules in the GAG fractions. The importance of these in vitro results to the incidence of chronic inflammatory periodontal disease in diabetic patien

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01132.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThis study was undertaken to test the hypothesis that seeded periodontal ligament cells are able to create new attachment. In one beagle dog, a premolar was removed and scrapings of the ligament were cultured. Artificial periodontal defects were made and the cultured ligament cells were seeded on the planed root surfaces and covered with muco‐periostal flaps. The opposite side served as control. After 4 months, the dog was sacrificed and histological and electron microscopical sections were prepared. The seeded root surfaces were almost completely covered with cementoblasts, whereas in controls, epithelial down‐growth could be observed. We conclude that seeding of periodontal ligament cells could be a promising technique to create new connective tissue attachm

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01133.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractGlass ionomer cement and composite resin are the most popular restorative materials in operative dentistry today. Earlier studies have shown more crevicular exudate around different types of composite resins than around intact enamel surfaces. The aim of this study was (1) to investigate plaque, retention on and the condition of the gingiva around, 1‐year‐old, subgingivally located, glass ionomer cement and composite resin fillings, and (2) to compare the initiation of gingival inflammation around these materials with that around enamel during a 14‐day period of experimental gingivitis. Plaque index, gingival index, bleeding on probing and crevicular fluid were recorded and compared intra‐individually. The amount of plaque and the degree of gingivitis adjacent to the composite fillings were not significantly higher than those for the glass ionomer cement and enamel surfaces in both the cross sectional and the experimental gingivitis study. Composite resin surfaces showed significantly higher crevicular fluid levels than did enamel at all days in the experimental gingivitis study. Glass ionomer cement showed significantly higher values at day‐0

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01134.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThe present study examines postoperative pain experience following 243 gingivectomies in Norwegian patients using possible combinations of 3 local anaesthetics (lidocaine‐adrenalin, prilocaine‐felypressin or mepivacaine) and 3 periodontal dressings (Coepak, Wondrpak or Nobetec). When Coepak was used, the mean pain score was higher (P<0.05) in the group treated with lidocaine‐adrenalin 4 to 6 h after gingivectomy than the groups treated with prilocaine‐felypressin or mepivacaine. There was no significant difference between the groups treated with prilocaine‐felypressin or mepivacaine. When Wondrpak or Nobetec were used, there was no significant difference between any of the local anaesthetics used. The present finding shows that the local anaesthetic combination of lidocaine‐adrenalin (1:80,000) gives rise to a higher mean postoperative pain experience after gingivectomy than prilocaine‐felypressin or mepivacaine. However, the relative difference in pain experience seen after gingivectomy when using the present local anaesthetic agents is masked when using an eugenolcontaining periodontal dressing. Thus, the higher pain experience reported after lidocaine‐adrenalin may only be clinically important when using periodontal dressings without local anaesthetic components

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01135.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractGlycyrrhizin, the main saponin of licorice, a surfactant producing aqueous gel, was tested for its effect on gingival health, as a supplemental agent in a toothpaste. 40 male and female volunteers brushed their teeth twice daily, with a toothpaste containing 0.25% and 0.50% glycyrrhizin, or a control toothpaste, respectively. All 3 toothpastes contained sodium lauryl sulfate as detergent. The subjects of the 3 groups were examined at days 0, 7, 14, 28, 35 and 42 for plaque, gingival and bleeding indices. The examiner was unaware of subject assignement. None of the brushing regimens with the experimental toothpastes induced significant changes in the examined indices, that were distinct from those observed with the control toothpaste. The decrease (insignificant) in the indices of the study period from 0 to 14 days may be considered as an increased oral hygiene awareness by the subjects examined. Possible explanations for the lack of efficiency in improvement of plaque, gingival and bleeding indices, may have been an insufficient glycyrrhizin concentration and/or chemical incompatibility in a toothpaste containing a mixture of an anionic detergent and an organic antibacterial surface agent.

ISSN:0303-6979    

DOI:10.1111/j.1600-051X.1991.tb01136.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY