Dr. Yusuf N. Kaba is Lecturer in the Department of Oral & Maxillofacial Surgery at the University of Erciyes, Kayseri, Turkey. Dr. Kaba’s clinical practice focused on skeletal correction of dentofacial deformities. Dr. Kaba earned his DDS degree from the University of Kocaeli, Faculty of Dentistry, Kocaeli, Turkey. He completed his specialty degree in Oral and Maxillofacial Surgery from Erciyes University. Dr. Kaba is a member of national association of maxillofacial surgery.
Sagittal split ramus osteotomy (SSRO) is the most used technique for the correction of dento-facial deformities. SSRO was first introduced by Schuchardt in 1942, it was popularized by Trauner and Obwegeser in 1957. Since then, many modifications have been made. Each modification has its own characteristics and purpose to ensure the correct separation of segments. SSRO is a reliable technique but not all stages of the operation can be controlled. Studies on lingual fracture patterns have reported that the lingual fracture line is highly variable and unwanted fractures occur in 0-15% of split. Factors affecting the lingual fracture pattern can be grouped under three headings: anatomical features of the mandible, osteotomy stage related factors and split stage related factors. Morphological features and density of the mandible, especially on the osteotomy lines, have been associated with the lingual fracture pattern. In addition, atypical mandibular anatomy can make difficult to complete application of osteotomy technique. The osteotomy technique and the exact application of the osteotomy during surgery have a primary impact on the lingual fracture pattern. In addition, the dominant hand and experience of the surgeon performing the split stage, the force applied during the separation and the direction of separation, the surgical instruments which used splitting influence the lingual split pattern. Numerous studies have investigated the relationship between mandible anatomy and lingual fracture pattern. The limitation of this studies anatomical features of mandible was evaluated, but no evaluation was made regarding the osteotomy technique. The aim of this presentation is to evaluate the anatomical features of the mandible and the effects of osteotomy technique-related factors on the lingual fracture pattern.