Abstract: OBJECTIVE: To investigate the efficacy of minimally invasive treatment of mandibular angle fractures with an intraoral-assisted buccal penetrator technique approach. METHODS: Twelve patients with angular mandibular fractures during January 2009-August 2010 were fixed with a homemade buccal penetrator through an intraoral incision combined with a small buccal incision for internal fixation. RESULTS: All patients were reviewed at 1,3,6 months postoperatively with normal opening, good occlusal relationship, no obvious surgical scars on the facial skin, and no facial palsy symptoms or postoperative infections. CONCLUSION: Intraoral assisted buccal penetrator approach for sturdy internal fixation is effective for mandibular angle fractures without severe dislocation, and can also achieve the purpose of avoiding facial scarring and reducing surgical trauma.