State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2021 Oct 1;39(5):598-604. doi: 10.7518/hxkq.2021.05.016.
This prospective study was performed to evaluate whether the distal-triangular flap was a practical alternative surgical approach for extracting mandibular third molars.
Sixty participants with impacted mandibular third molars were randomly divided into three groups: group A, distal-triangular flap; group B, Szmyd flap; and group C, envelope flap. The impacted third molars were extracted by the corresponding flapping method. During a three-month follow-up observation after the extraction, the postoperative pain, swelling, mouth opening, and periodontal status were recorded and analyzed by ANOVA and chi-square tests.
The 60 participants had successful extraction and 3-month follow-up observation. No participant suffered from postoperative infections, lower lip disorder, or tongue sensory disorders. No statistical differences were found in the postoperative symptoms and signs of the three flap designs, such as postoperative pain, swelling, mouth opening, and periodontal status (>0.05).
The distal-triangular flap was as safe and reliable as the Szmyd and envelope flaps but more advantageous because of its convenient operative field exposure and low requirement for the patient's mouth opening. Thus, the distal-triangular flap is one of the alternative flap options for extracting impacted mandibular third molars.
本前瞻性研究旨在评估远端三角瓣是否是一种实用的下颌第三磨牙拔除术式。
将 60 名下颌阻生第三磨牙患者随机分为三组：A 组，远端三角瓣；B 组，Szmyd 瓣；C 组，信封瓣。采用相应的翻瓣法拔除阻生第三磨牙。拔除后 3 个月随访观察，采用 ANOVA 和卡方检验记录和分析术后疼痛、肿胀、张口度和牙周状况。
60 名患者均成功拔除并完成 3 个月随访观察。无术后感染、下唇障碍或舌感觉障碍。三种瓣设计的术后症状和体征（如术后疼痛、肿胀、张口度和牙周状况）无统计学差异（>0.05）。
远端三角瓣与 Szmyd 瓣和信封瓣一样安全可靠，但由于其手术野暴露方便，对患者张口度要求低，具有一定优势。因此，远端三角瓣是拔除下颌阻生第三磨牙的可选瓣之一。
