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External Skeletal Fixation in Mandibular Reconstruction After Resection-Report of Two Cases and Literature Review

骨外固定裝置應用於下顎骨切除後重建的經驗-兩病例報告及文獻回顧

摘要


Accurate maintenance of a condyle in a glenoid fossa and keeping the occlusal relationship in patients who have received segmental resection of the mandible is always a difficult task for oral maxillofacial surgeons. A discrepancy in occlusion can cause temporomandibular joint dysfunction, and chronic pain. The most common technique in a mandibulectomy case is pre-bending a reconstruction plate and drilling holes before the mandibular resection so that the original mandibular contour and chin projection can be maintained. Another technique widely used for maintaining occlusion is intermaxillofacial fixation. However, when the mandibular is stricken with a tumor or the patient is edentulous, the aforementioned methods might be unavailable. We present a simple technique by using an AO external skeletal fixation appliance during the operation to stabilize the condyle position and maintain the original occlusion.

並列摘要


對於口腔顎面外科醫師來說,在下顎骨切除手術中準確維持髁突在關節窩的位置以及術前咬合關係並不容易。即使是微量的咬合變化,也可能造成顳顎關節功能異常及慢性疼痛。爲了避免這些併發症,最常被應用的方法是在下顎骨切除手術前預先彎折重建板、打洞,使下顎骨和頦突外型因此得以保留。另一個常用來維持咬合的方法是顎間固定。然而當遇到下顎骨外緣被腫瘤破壞,或無牙脊患者時,以上方法則不適用。本文分享使用骨外固定裝置來穩定髁突位置,藉以保有原始咬合位置的經驗。

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