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目的:探讨颌面发育期恒前牙牙体缺损修复的时机。方法:收集颌面发育期恒前牙牙体缺损需进行修复的病例32例,拍摄口内照片,采用图形处理软件分析缺损位置、形态对缺损间隙的影响,并据此确定牙体缺损修复的时机。结果:32例需进行缺损修复的病例中,12例间隙异常,20例间隙正常。邻接点破坏且未进行间隙维持,待颌面发育期完成后将导致牙间隙异常。结论:邻接点破坏与否可以作为是否需要进行间隙维持的依据,有助于临床上选择缺损修复的正确时机。
Objective: To investigate the timing of tooth restoration of permanent premolars in maxillofacial development. Methods: Thirty-two cases of maxillofacial permanent tooth defects were collected, photographs of the mouth were taken, and the effects of the position and shape of the defect on the defect were analyzed by using the software of graphic processing. The timing of tooth defect repair was then determined. Results: Of the 32 cases requiring defect repair, 12 were abnormal and 20 were normal. Adjacent point damage and no gap maintenance, until the completion of maxillofacial growth will lead to abnormal tooth space. Conclusion: The destruction of the adjacent point can be used as a basis for the maintenance of the gap. It is helpful to choose the right time to repair the defect clinically.