Mastication and swallowing require the action of masticatory muscles, mandible, maxilla and teeth. Teeth play a significant role in pronunciation and aesthetics and form the occlusal surface, constituting the most important first step of the chewing function. In order for the tooth to withstand the masticatory function, the structure of the teeth must be strong, and the surrounding tissues such as the periodontal ligament and the alveolar bone should be maintained in a healthy state. The three major diseases of dentistry which are dental caries, periodontal disease and malocclusion: adversely affect the tooth and its surrounding tissues, and may cause masticatory and swallowing disorders. The purpose of this review is provide detailed information about dental problems and related mastication and swallowing problems.