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目的比较磨牙残根分根术后进行铸造桩核单冠修复与联冠修复的临床效果。方法对2005年5月至2007年5月来院就诊的患者68例共79颗符合入选标准的恒磨牙残根进行根管和牙周治疗后进行分根术,必要时进行牙半切除术或牙冠延长术。1～2个月后,再进行铸造桩核修复,根据残根邻牙的牙体情况分别采取单冠修复(组一,38颗)、与邻牙联冠修复(组二,41颗)。结果经过2、4年的随访观察,2年时单冠修复成功率为89.47%,联冠修复成功率为92.69%,两组比较差异无统计学意义(P>0.05);4年时单冠修复成功率为71.05%,联冠修复成功率为90.24%,两组比较差异有统计学意义(P<0.05)。结论磨牙残根分根术后桩核联冠修复具有更好的临床效果。
Objective To compare the clinical effect of single crown restoration with cast post and core crown after root resurfacing of molars. Methods From May 2005 to May 2007 a total of 68 patients were hospitalized with a total of 79 eligible molars. The root canal and periodontal treatment were carried out after root canal surgery, if necessary, partial mastectomy or teeth Crown extension surgery. After 1 to 2 months, the cast post and core were rebuilt. Single crown restoration (group 1, group 38) and crown restoration with adjacent teeth (group 2 and group 41) were performed according to the dental rest of the adjacent tooth. Results After 2 or 4 years of follow-up, the successful rate of single-crown restoration was 89.47% at 2 years, and the successful rate of double-crown restoration was 92.69%. There was no significant difference between the two groups (P> 0.05) The success rate of repair was 71.05%, and the success rate of joint crown repair was 90.24%. There was significant difference between the two groups (P <0.05). Conclusion Molar residual root root postoperatively with post crown combined crown repair has a better clinical effect.