舌侧骨板切除术；
目的：探讨经舌侧骨板切除术拔除下颌低位阻生第三磨牙的可行性及其优势。
Purpose: the purpose of this study was to investigate the feasibility and advantage of extracting the impacted mandibular third molar via resection of lingual bone plate.
先用游标卡尺测定各截面的高度、宽度，以及颊侧、舌侧和下缘骨密质的厚度。
The height, width and thickness of the compact substance of the buccal, lingual and inferior bony plates were measured with vernier calipers.
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