Results of periodontal treatment related to pocket depth and attachment level. Eight years.
Explore the source record for details and available documents.
Epithelial Attachment↗
Biomedical subjects
J W Knowles
Publications and source records attributed to J W Knowles.
Short term results of three modalities of periodontal treatment.
Short term data were obtained from 74 patients who recieved comprehensive periodontal treatment using a split mouth approach to test three variables; subgingival curettage, pocket elimination surgery, and modified Widman flap procedure. The patients initially had an average interproximal loss of attachment of 3.2 mm and an average interproximal pocket depth of 3.9 mm. Evaluation of the data indicate that after 4 to 6 weeks: 1. All three surgical procedures reduce pocket depths. In order of effectiveness they are: pocket elimination surgery, modified Widman flap, and subgingival curettage. 2. Pocket elimination surgery reduces pockets more than subgingival curettage on the buccal, lingual and interproximal, and more than the modified Widman flap on the lingual. The modified Widman flap procedure reduces pockets more interproximally than subgingival curettage. 3. Subgingival curettage results in a gain of attachment interproximally, and on the lingual side, while the modified Widman flap resulted in a gain of attachment interproximally only. 4 Pocket elimination surgery resulted in a loss of attachment buccally. 5 Subgingival curettage results in a more favorable postoperative attachment level on all surfaces than did pocket elimination surgery.
Adult↗
Radiographs in clinical periodontal trials.
Fifty-eight patients were selected from an ongoing study of periodontal therapy at The University of Michigan. Pre-and post-treatment series of full mouth radiographs obtained by conventional paralleling long cone technique were available. Mesial and distal radiographic bone height was scored using the technique developed by Björn et al. A total of 1416 teeth were scored from the itial radiographs, and subsequently at one, two, three, and four years after the treatment. Radiographic bone height scores were compared with level of attachment and pocket depth scores for the same teeth at the same time. Statistical significance and correlation coefficients were derived using computer analysis of the data. The data were analyzed using three different data groupings: individual teeth, patient means, and half-mouth treatment methods. High positive correlations were found between initial measurements of radiographic bone height and attachment level as well as pocket depth. The correlations between changes in measurements of radiographic bone height and attachment level after treatment were markedly lower but are statistically significant. A highly significant correlation between radiographic bone heights and measurements of attachment level also appeared in follow-up data one to four years after treatment. The method of data grouping resulted in different correlation coefficients. Highest correlations were found if the data were pooled for patients. Lowest correlations were found if the data for individual teeth were analyzed. When the data were combined to produce patient scores, sample variation is reduced and correlations increase in magnitude. The generally high correlations between radiographic bone height and attachment level scores before and after treatment tend to confirm the fact that radiographic assessment of alveolar bone height using the method of Björn et al. can provide fairly accurate assessment of interproximal periodontal support.
Alveolar Process↗
Results following three modalities of periodontal therapy.
Three methods for treatment of periodontal pockets (subgingival curettage, modified Widman flap surgery, and pocket elimination) were applied as a clinical trial to 82 patients. Follow up results over one to five years after the initial treatment are reported. The variations in attachment levels and pocket depth were analyzed statistically as related to methods of treatment and yearly time intervals following the initial treatment. The most favorable results regarding gain or maintenance of attachment levels and reduction of pocket depth were observed interproximally. Subgingival curettage provided the greatest gain in attachment level up to three years postoperatively, but after four to five years there was no significant difference in results following the three methods. The most significant loss of attachment and return of pocket depth occurred on the buccal aspects of the teeth, and the results were not significantly different for the three methods except at the first year of follow up when the attachment level was maintained best after curettage.
Adult↗