Hellden L B, Elliot A, Steffensen B, Steffensen J E
Department of Periodontology and Oral Medicine, Vanersborg-Trollhattan Hospital, Sweden.
J Periodontol. 1989 Apr;60(4):182-7. doi: 10.1902/jop.1989.60.4.182.
The present study evaluated the long-term prognosis of tunnel preparations performed in a large number of teeth with advanced periodontal furcation defects. One hundred seven (107) patients, in which 156 teeth had been treated by tunnel preparations, were recalled for an evaluation, which was based on a questionnaire, a clinical examination, and radiographs; 102 patients attended (149 teeth = 95%). The mean observation time per tooth was 37.5 months (range 10 to 107 months). The results showed that 10 teeth (6.7%) had been extracted and 7 teeth (4.7%) hemisected. The indication for 12 of these extractions or hemisections was root caries. Among the remaining 132 teeth, 23 (15.4%) showed initial or established caries. There was no relationship between caries development and length of the observation time. Thus, approximately 75% of the teeth were still caries-free and in function. The findings demonstrated that tunnel preparations have a considerably better prognosis than previously reported and should be considered a valid treatment alternative.
本研究评估了大量患有晚期牙周根分叉病变牙齿进行隧道预备的长期预后情况。对107例患者进行了回访评估，这些患者中156颗牙齿接受了隧道预备治疗，评估基于问卷调查、临床检查和X光片；102例患者前来就诊（149颗牙齿，占95%）。每颗牙齿的平均观察时间为37.5个月（范围为10至107个月）。结果显示，有10颗牙齿（6.7%）被拔除，7颗牙齿（4.7%）被半切。这些拔牙或半切病例中有12例的指征为根龋。在其余132颗牙齿中，23颗（15.4%）出现了初始龋或已患龋。龋病发展与观察时间长短之间没有关系。因此，约75%的牙齿仍无龋且功能良好。研究结果表明，隧道预备的预后比之前报道的要好得多，应被视为一种有效的治疗选择。
