テンションリッジの有無と歯周病学的臨床パラメーターおよび歯列形態の関係
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概要
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The purpose of the present study was to investigate the relationship between the presence of the tension ridge and the severity of periodontal disease and the morphological characteristics of the dentition. Thirty seven patients with and without periodontal disease were recruited from the pool of the patients. The following clinical parameters were recorded by a single dentist ; probing pocket depth (PPD), probing attachment level (PAL), bleeding on probing (BOP). In addition, 14 series of dental radiographs, oral photographs, and the study cast impression were taken at the initial examination. The patients were classified into four groups in accordance with the presence of the tension ridge and the severity of the periodontal disease. Four groups constituted T(+) I ; patients who had the tension ridge in conjunction with moderate to severe periodontitis, T(-) I ; patients who did not have the tension ridge in conjunction with moderate to severe periodontitis, T(+) II ; patients who had the tension ridge in conjunction with healthy to slight periodontitis, and T(-) II ; patients who did not have the tension ridge in conjunction with healthy to slight periodontitis. Comparison was made among the groups as to PPD, PAL and BOP. PPD and PAL in palatal site of maxillary premolar, canine and incisor, and those in buccal site of maxillary incisor showed greater values in T(+) I as compared with T(-) I. BOP in palatal site of maxillary premolar, canine and incisors, and those in buccal site of maxillary premolar showed greater values in T(+) I as compared with T(-) I. There was no statistically significant difference between T(+) II and T(-) II in the PPD and BOP. Furthermore, the measurments of the study casts were compared among the groups. The width of the dentition showed no statistical difference between any two groups. The vertical length between central incisors and first molars in T(+) I was longer than that in T(-) I. These results indicated that the patients who had tension ridge in conjunction with periodontitis showed local progression of the periodontitis and the typical morphological characteristics of the dentition. For the diagnosis and the treatment planning of the periodontitis for the mouth breathers, these findings may provide useful information.
- 1998-12-25
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