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Effects of repeated scaling and root planing and/or controlled oral hygiene on the periodontal attachment level and pocket depths in beagle dogs
Author(s) -
Syed S. A.,
Morrison E. C.,
Lang N. P.
Publication year - 1982
Publication title -
journal of periodontal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.31
H-Index - 83
eISSN - 1600-0765
pISSN - 0022-3484
DOI - 10.1111/j.1600-0765.1982.tb01148.x
Subject(s) - beagle , dentistry , scaling and root planing , premolar , medicine , gingival and periodontal pocket , oral hygiene , periodontitis , orthodontics , molar , chronic periodontitis
A study was performed to evaluate the effect of initial and/or repeated scaling with or without controlled oral hygiene on the level of periodontal attachment and pocket depth in beagle dogs. The clinical results of this three‐year longitudinal study have been reported previously (Morrison et al. 1979). The purpose of the present report is to present the microbiological results of subgingival plaque samples obtained from selected sites at the conclusion of the study. Eight beagle dogs with moderately developed periodontitis were divided into experimental and control animals. The experimental group received a thorough scaling and root planing at the start of the experiment following which the animals were subjected to daily toothbrushing and rubber cup and pumice prophylaxis every second week for 36 months. Four control dogs were not subjected to any oral hygiene procedures for the entire period of the study. The teeth of two quadrants in each animal of the experimental and control group were scaled and root planed every six months. After three years subgingival plaques from the mesial aspect of the fourth premolar in each of the quadrants of each animal were collected by sterile curettes, processed anaerobi‐cally, and cultured in an anaerobic glove box. Significantly lower total viable colony forming units (CFU) as well as significantly lower anaerobe/aerobe ratios were found in the subgingival plaques of the experimental animals. The total CFU of Bacteroides asaccharo‐lyticus was 25 times lower, and tie proportion of CFU of this organism was nine times lower in the experimental sites when compared with the control sites. Repeated scaling every six months also lowered the total CFU and the proportion of Bacteroides asaccharo‐lyticus in the subgingival plaques of the experimental as well as the control animals. The data suggest that the level of Bacteroides asaccharolyticus as key organisms as well as the anaerobe/aerobe ratio are valuable microbiological parameters in evaluating the efficacy of periodontal therapy.