Int J Prosthodont. 2019 May/Jun;32(3):241-247. doi: 10.11607/ijp.6181.
To report the feasibility of oral rehabilitation in patients who had undergone marginal mandibulectomy and to describe the factors that impact the selection of a mandibular resection prosthesis.
A retrospective review of patients who had undergone marginal mandibulectomy over a 14-year period at a tertiary care cancer center was undertaken. Measurements of the vertical height and width of the mandible and the distance between the alveolar crest and mandibular canal were measured after marginal mandibulectomy. The feasibility and success of tooth-borne or implant-supported resection prostheses were measured.
Following marginal mandibulectomy, the median heights between the alveolar crest and lower border of the mandible were 21.8 mm, 17.7 mm, and 14.3 mm in the anterior, premolar, and molar regions, respectively. However, the median distances between the alveolar crest and the mandibular canal in the premolar and molar regions were only 3.98 and 3.4 mm, respectively. These residual bone measurements are not satisfactory for implant-supported mandibular resection prostheses, which can be considered only in the anterior region of the mandible. Patients with marginal mandibulectomy in the premolar and molar regions can only be rehabilitated with removable dentures, provided they have remaining stable teeth to clasp and anchor the removable denture.
Implant-supported resection prostheses after marginal mandibulectomy are feasible only in the anterior segment of the mandible and are not possible in the premolar and molar regions.
报告行下颌骨边缘切除术患者行口腔修复的可行性，并描述影响下颌骨切除修复体选择的因素。
对 14 年间在一家三级癌症治疗中心行下颌骨边缘切除术的患者进行回顾性研究。测量下颌骨垂直高度和宽度以及牙槽嵴与下颌管之间的距离。测量牙支持式或种植体支持式切除修复体的可行性和成功率。
行下颌骨边缘切除术治疗后，牙槽嵴到下颌骨下缘的中位距离在前部、前磨牙和磨牙区域分别为 21.8mm、17.7mm 和 14.3mm。然而，在前磨牙和磨牙区域，牙槽嵴到下颌管的中位距离仅为 3.98mm 和 3.4mm。这些残留骨的测量值不适合种植体支持的下颌骨切除修复体，仅在前部下颌骨区域可以考虑使用。行下颌骨边缘切除术的前磨牙和磨牙区域的患者只能通过可摘义齿进行修复，前提是有足够稳定的牙齿来固位和支持可摘义齿。
行下颌骨边缘切除术的患者仅在前部下颌骨区域可行种植体支持的切除修复体，而在前磨牙和磨牙区域则不可行。
