Evaluation of the effect of modified reciprocating saw in mandibular angleplasty

doi:10.19438/j.cjoms.2026.02.002

Abstract

Abstract: PURPOSE: To evaluate the effect of modified reciprocating saw in mandibular angleplasty, and to provide a reference for the selection of clinical surgical instruments. METHORDS: The clinical data of 16 patients with bilateral mandibular angle hypertrophy who underwent mandibular angleplasty in the Affiliated Stomatological Hospital of Guizhou Medical University from March 2021 to January 2024 were retrospectively analyzed. All patients underwent osteotomy with a modified reciprocating saw. Spiral CT was used to measure data such as preoperative and postoperative mandibular angle, mandibular symmetry(horizontal difference between bilateral mandibular angle points and the midfacial plane), lower facial width (distance between bilateral mandibular angle points), and height of the posterior ascending ramus of the mandible (distance from the condylar vertex to the mandibular angle point). In addition, patient satisfaction and postoperative complications were followed up. RESULTS: All postoperative indicators were significantly improved compared with preoperative ones. The mandibular angle increased from 105.99°±4.67° to 113.87°±3.80° (P<0.05); the mandibular symmetry improved from (4.21±3.26) mm to (2.11±1.59) mm (P<0.05); the lower facial width decreased from (98.23±7.88) mm to (96.09±8.25) mm (P<0.05); and the height of the posterior ascending ramus of the mandible decreased from (62.32±5.26) mm to (44.47±4.97) mm(P<0.05). During the 6-12 month follow-up, no serious complications such as soft tissue sagging or condylar fracture were observed, and the patient satisfaction after surgery was significantly higher than that before surgery (P<0.05). CONCLUSIONS: The application of the modified reciprocating saw in mandibular angleplasty can effectively improve the mandibular angle, symmetry, and lower facial width, significantly reduce the risk of soft tissue sagging, with few complications and high patient satisfaction. It is expected to become the preferred instrument for this surgery.

Key words: Mandibular angleplasty, Mandibular angle hypertrophy, Modified reciprocating saw, Soft tissue sagging

CLC Number:

R782.2

Chen Zhiyun, Xiang Xuefei, Chen Youli, An Peng, Tang Zhenglong, Wang Yu. Evaluation of the effect of modified reciprocating saw in mandibular angleplasty[J]. China Journal of Oral and Maxillofacial Surgery, 2026, 24(2): 110-113.

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