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Comparative longitudinal study of 2 methods of scheduling maintenance visits: 4-year data.

Abstract：

:116 subjects were recruited from a population of patients previously treated for adult periodontitis and maintained in periodontal health by means of periodic prophylaxes every 3-6 months. The subjects were divided into a control (C) and a test (T) group. A total of 33 patients in the T group and 47 in the C group completed the 4-year study. The C subjects were examined every 6 months and given a prophylaxis every 3 months. The patients in the T group were examined at similar intervals, but prophylaxes were administered according to the individualized scheme of Listgarten and Shiffter, on the basis of a differential microscopic count of subgingival bacterial morphotypes. Recurrent periodontitis was defined as an increase in probing depth of 3 mm or more from baseline measurements. Teeth so affected were sampled microbiologically when the diagnosis of recurrent disease was made and "exited" from the study for treatment. A control microbial sample was taken at the same time from a previously-defined pooled sample of non-affected surfaces with comparatively high, but stable probing depths. During a 4-year period, more than half of the subjects developed at least one recurrence of disease, and one-third of the subjects had 2 or more recurrences of periodontitis. Disease recurred on approximal surfaces 81% and on orovestibular surfaces 19% of the time. There were no significant differences in the rate of disease recurrence between the C and the T group, even though recall intervals in the T group at the 4-year examination averaged 19.4 months and an average of 30.6 months had elapsed since the previous prophylaxis. Both groups exhibited similar plaque index and gingival index scores, similar probing depth and attachment level measurements, and similar proportions of different bacterial morphotypes during the 4-year study. However, differences were noted between examinations for both groups with respect to most of these criteria. This study provides 4-year longitudinal data on the clinical and certain microbiological characteristics of a population of adult patients previously treated for moderate to advanced periodontitis, and subsequently placed on periodontal maintenance. The results indicate that some of these patients may remain in good periodontal health despite the lack of regular tri-monthly recall visits, and that microscopic monitoring of the subgingival microbiota may be of value in identifying these individuals.(ABSTRACT TRUNCATED AT 400 WORDS)

journal_name

J Clin Periodontol

journal_title

Journal of clinical periodontology

authors

Listgarten MA,Sullivan P,George C,Nitkin L,Rosenberg ES,Chilton NW,Kramer AA

doi

10.1111/j.1600-051x.1989.tb01622.x

subject

Has Abstract

pub_date

1989-02-01 00:00:00

pages

105-15

issue

eissn

0303-6979

issn

1600-051X

journal_volume

pub_type

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Comparative longitudinal study of 2 methods of scheduling maintenance visits: 4-year data.