應用無機牛骨衍生物於雙側下顎第二大臼齒遠心側環繞型骨性缺損－病例報告

治療下顎第二大臼齒遠心側的環繞型骨性破壞，是牙周病科醫師的一大挑戰。骨缺損形態、角化牙齦的量、前庭深度，以及器械操作的可近性，被認爲是與治療成效相關的重要因素。許多不同的治療方法及成效曾被報告過。本文提出一位在下顎雙側第二大臼齒的遠心處有環繞型骨內缺損的病例，治療方法是以翻瓣清創手術及徹底牙根整平術後，植入無機牛骨衍生物。在評估牙周囊袋深度、附連高度及放射線檢查的骨充填影像後，手術的臨床效果是令人滿意的。經由本病例報告的觀察，發現使用無機牛骨衍生物治療環繞型牙周破壞，臨床上可得到明顯的改善成效。未來還須要更大量的治療病例以確定這種治療方法的長期可預測性。

關鍵字

無機牛骨衍生物；下顎第二大臼齒；環繞型破壞

並列摘要

Treatment of deep circumferential bony defects around the mandibular secondary molars is a great challenge to periodontist. The morphology of the bony defect, the amount of the keratinized gingiva, the depth of the vestibule, and the accessibility for instrumentation are considered as important factors associated with the clinical outcome of treatment. Many treatment modalities with disparate results had been reported. We provide a case report that had distal circumferential bony defects around her bilateral mandibular secondary molars. Demineralized bovine xenograft was grafted into the bony defects after open flap debridement and thorough root planing. The clinical outcome of the surgery was satisfied as evaluated by clinical examination including probing depth, attachment level and radiographic bone fill. In conclusion, the findings of the present case, although based on a small number of observations, suggested that the enhanced clinical result in the treatment of circumferential defects in consequence of using demineralized bovine xenograft. Additional studies in a larger number of patients are needed to determine the predictability of the treatment modality in longevity.

並列關鍵字

demineralized bovine xenograft ； mandibular secondary molar ； circumferential defect

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應用無機牛骨衍生物於雙側下顎第二大臼齒遠心側環繞型骨性缺損－病例報告

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