問題詳情

59.如下圖所示,因意外導致正中門牙之牙冠斷裂,牙髓暴露但仍有活性,請問如何處置?


【題組】59
(A)拔除該牙(extraction),再植人工牙根
(B)做冠髓切除術(pulpotomy)
(C)做牙髓切除術(pulpectomy)
(D)做牙根尖形成術(apexification)

參考答案

答案:B
難度:簡單0.708333
統計:A(0),B(17),C(0),D(3),E(0)

用户評論

joe極白】評論

由於牙髓仍有活性,用於嚴重根尖感染的(A) extraction 和用於 pulp necrosis 幫助根尖週邊硬組織鈣化的(D) apexification 便不考慮。 根據課本,vital pulp therapy 包括 direct pulp capping、pulpotomy 和 partial pulpectomy。 關於 partial pulpectomy 的應用,課本敘述為”A partial pulpectomy may be performed on primary teeth when coronal pulp tissue and the tissue entering the pulp canals are vital but show clinical evidence of hyperemia. The tooth may or may not have a history of painful pulpitis, but the contents of the root canals should not show evidence of necrosis (suppuration). In addition, there sho...