Abstract:

Occlusal reconstruction is an important method of restoring a normal occlusal relationship to the natural dentition. The correct choice of lateral occlusion scheme is necessary for physiological occlusal reconstruction. The main lateral occlusion schemes for the occlusal reconstruction of the natural dentition are canine protection and group function. This article reviews the effects of lateral occlusion schemes on the stomatognathic system and factors affecting the choice of lateral occlusion schemes in the occlusal reconstruction of natural dentition. According to the literature review, the lateral occlusion schemes affect the physiological functions of the stomatognathic system. Both lateral occlusion schemes have less impact on the temporomandibular joint. Group function produces greater EMG activity, jaw movement velocity, and jaw lateral freedom than canine protection. The lateral occlusion schemes of the natural dentition should be selected according to the degree of lateral movement, types of static occlusion, and age of patients. For patients with Angle’s Class Ⅲ malocclusion, skeletal Class Ⅱ,Ⅲ malocclusion, and the elderly, group function is recommended, while canine protection is more recommended for young adults. For patients who eventually need to achieve canine protection, it is recommended to design group function in the early stage of lateral movement, and gradually transition to canine protection with the increase of lateral movement. Thus, clinicians need to fully understand the influencing factors of lateral occlusion selection during occlusal reconstruction in natural dentition, providing a basis for the development of personalized diagnostic and treatment plans.

Key words: occlusal reconstruction, natural dentition, lateral occlusion scheme, canine protection, group function