斷牙矯正萌出合併牙冠增長手術八年後回診：病例報告

8 Years Follow-up of a Fractured Incisor Dealt with Forced Eruption and Crown Lengthening: A Case Report

陳秀甄(Chen Hsu Chen)

《中華民國家庭牙醫學雜誌》 16卷2期 (2021/09) Pp. 19-24

https://doi.org/10.6566/JFD.202109_16(2).0003

摘要

牙冠與部分牙根缺失的牙齒若直接製作假牙，無法達到環箍效應（ferrule effect），而容易造成無法抵抗咬合時側方剪力（lateral shear force）而失敗。並且只做牙冠增長手術後製作的假牙，會造成牙齦弧線過高，無法達到理想外觀。因此，對於本斷裂門牙病例，歷經近四個月，其治療過程合併根管治療、矯正萌出、牙冠增長手術、製作鑄釘以及單顆固定假牙復形。本文將呈現八年後的回診，評估其外觀功能與牙周破壞，並討論失敗可能原因。

關鍵字

斷牙 ； 矯正萌出 ； 牙冠增長牙周手術 ； 環箍效應

並列摘要

If a crown restoration is directly fabricated on an incisor tooth with lost crown structure and part of the root, it is easy to fail to resist the lateral shear force during occlusion due to the ferrule effect cannot be achieved. A single fixed crown restoration made after crown lengthening periodontal surgery will result in a high gingival curve and too long teeth to achieve the desired appearance. Therefore, for the case of this fractured incisor tooth, after nearly four months, the treatment process was combined with root canal treatment, orthodontic forced eruption , periodontal surgery for crown lengthening, casting post and core, and single fixed crown restoration. This article will present recalled visits during the past eight years, assess its appearance, function and periodontal damage, and discuss possible causes of failure.

並列關鍵字

fractured tooth ； forced eruption ； crown lengthening ； ferrule effect