上顎第一小臼歯の根分岐部病変の頻度およびそのX線診断法について

概要

論文の詳細を見る
The diagnosis and the treatment of the furca involvements are clinical entity which require special attention of the periodontists because of its reported poor prognosis. However, the periodontal breakdown involving the furca of maxillary first premolar has been often over looked in daily practice because of the scarcity of information. This study was intended to enhance some practical knowlegde to this field. On 386 periodontal patients, the incidence of furcated maxillary first premolar and the incidence of furca involvements were investigated on the two dental X-ray films one of which having been taken ortho-radially and the other mesio-eccentrically to the maxillary first premolar. Two hundred and twenty-four out of 772 first premolar (29.0%) were interpreted as multirooted. Furca involvement were observed in 26 out of 224 multirooted premolar (11.6%). The incidence of furca involvements of the maxillary first premolar was found 3.3% (26/772×100). Some roentgenographic technique were applied to the furca of maxillary premolar to aid the more reliable roentgenographic interpretation. Computerized tomography was most helpful to determine the configulation of the furca area. Panagram together with the 25°mesio-eccentrically taken dental X-ray film was also helpful.
特定非営利活動法人日本歯周病学会の論文
1980-03-28