Regenerative Endodontic Procedure for an Immature Permanent Incisor with Luxation Injury: A Case Report

血管再生術於外傷脫位之未成熟恆門齒之應用：案例報告

江慧君(Hui-Chun Chiang) ； 王詩凱(Shih-Kai Wang) ； 王姻麟(Yin-Lin Wang) ； 張曉華(Hsiao-Hua Chang) ； 林明怡(Ming-Yi Lin) ； 唐天玲(Tien-Ling Tang) ； 陳煥文(Huan-Wen Chen) ； 黃桂芬(Gui-Fen Huang) ； 郭敏光(Ming-Kuang Guo)

《臺灣兒童牙醫學雜誌》 20卷1期 (2020/03) Pp. 34-40

https://doi.org/10.6319/TJPD.202003_20(1).0005

摘要

Pulp necrosis in immature permanent teeth can cause interruption or cessation of root development. These teeth are generally predisposed to a poor prognosis due to thin dentinal walls that can lead to root fractures, short dental roots, and unfavorable crown-root ratio which decreases the strength of teeth against lateral forces. Endodontic revascularization procedures have been shown to treat immature permanent teeth with success on rescuing root development and preventing potential adverse sequelae. This report presented a case of a nine-year-old girl who had a lateral luxation injury of left maxillary central incisor and suffered from biting pain and gingival swelling. The tooth was treated with revascularization procedures, which resulted in a complete resolution of clinical symptoms, healing of the periapical lesion, and evident continuation of root development. This case demonstrated that revascularization procedures may favor a desirable treatment outcome in immature permanent teeth with pulp necrosis and can be considered as a treatment of choice in similar cases.

關鍵字

Revascularization ； regenerative endodontic procedure ； immature permanent tooth ； traumatic dental injury

並列摘要

年輕恆牙之牙髓壞死常造成牙根發育停止。未成熟的牙根因長度短、牙根壁薄與較差之牙冠牙根比而對側方咬力之耐受度不足，容易斷裂，往往造成該顆牙齒極差之預後。血管再生術有機會讓此類未成熟牙齒的牙根持續發育，解決上述問題。本案例為一位九歲女童，左上正中門齒因外傷側方脫位造成牙髓壞死，引發牙齒咬痛及牙齦紅腫等症狀。以血管再生術進行治療後，除臨床症狀消除之外，骨頭癒合良好，且牙根有持續發育之跡象。此案例顯示血管再生術可在牙髓壞死的未成熟恆牙達到良好的治療成效，可作為類似案例之常規治療選擇。

並列關鍵字

血管再生術 ； 牙髓再生術式 ； 未成熟恆牙 ； 牙科外傷