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目的:采用不同固位形式嵌体冠对短冠磨牙进行修复,对比观察疗效,评估其临床修复效果。方法:选取66颗根管治疗后的短冠磨牙进行钴铬合金嵌体冠修复,分为髓室固位嵌体冠组、常规桩核嵌体冠组、插销桩核嵌体冠组。所有患者修复2年后,对修复体粘结效果进行评价。结果:髓室固位嵌体冠粘结强度小于常规桩核嵌体冠和插销桩核嵌体冠,但3组之间无明显差异。结论:3种固位方式嵌体冠的粘结强度均能满足临床修复的要求,临床上应视基牙情况选择适合的修复方式。
OBJECTIVE: To repair the short molar teeth with different crown inlay crowns to compare the curative effect and evaluate the clinical effect. Methods: Sixty-six root canal short-tooth crowns were treated with cobalt-chromium inlay crowns, and were divided into three groups: in-creased intima-crown crowns, conventional post-core inlay crowns, and plug pins in-core crowns. After 2 years of repair in all patients, the prosthesis adhesion was evaluated. Results: The bond strength of the medullary cavity inlay crowns was smaller than that of the conventional postal inlay and the pin-in-post core inlays, but there was no significant difference between the three groups. CONCLUSION: The adhesive strength of the three kinds of retention methods inlay crowns can meet the requirements of clinical reparation, and should be selected clinically depending on the condition of abutment.