皆さんこんにちは。
今回も前回に引き続きFactors affecting the long-term results of endodontic treatment
のMATERIALS AND METHODSの項目
になります。
The patients treated by the undergraduate students at the Department of Endodontics at the University of Umea during 1977, 1978, and 1979 were recalled after 8 to l0 yr for reexamination to evaluate the results of the treatment. Of 770 recalled patients, 356 were reexamined. The various reasons for the rest of the patients not having been examined are presented in Fig. 1. The mean age of the patients was 54 yr (range, 28 to 82). Fifty-four percent were males. A total of 635 teeth and 849 roots were included in the study.Those teeth, which for various reasons had been extracted during the treatment period, were excluded from the study.Sixty-eight of the root-filled teeth had been extracted during the follow-up period (Table 1). The distribution of the material according to type of tooth, preoperative status of the pulp,and periapical status are presented in Table 2. Information on the endodontic treatment and radiographs were taken from the patient records.The preoperative diagnosis of a vital pulp was made in 267 of the roots. Among them, 72 roots were treated because retention for a post was necessary or because the pulp had been exposed due to trauma. The remaining roots with vital pulps were treated as the result of carious lesions or symptomatic pulpitis. There was pulp necrosis in 306 roots, of which 204 revealed apical radiolucency. In roots with pulp necrosis but no apical periodontitis, the necrosis was usually restricted to the coronal part of the canal. Of the 267 roots which had been filled earlier, 94 were retreated for the presence of periapical lesions and 173 due to defective root fillings, which were observed on roots which were to be prepared for a post.
つまり
患者は歯内療法学科の学生に治療を受け
356人が8～10年後のリコール時に再評価された。
年齢は28歳から82歳まで、平均54歳だった。
期間中に抜歯となった68本の歯については除外し
635歯849根管で研究が行われた。
267の生活根管の内、72根管が維持ポスト植立の為
また外傷の為、根管治療された。
残りの生活根管はカリエスや歯髄炎により根管治療された。
306の壊死根管の内、204根管については根尖透過像が認められた。
早期に根充された267根管の内、94根管は根尖病変が出現した為再根管治療された。
また、173根管は根充不十分の為 再根管治療された。
ということです。