Dental retractors, such as cheek retractors, vestibular retractors, tongue depressors, and implant retractors, are used in the retraction of tissues and gums to provide optimal access to the oral cavity, to enlarge sockets to aid in extraction and implantation of new teeth, and to depress the tongue during procedures and examinations. Popular patterns include Austin tissue retractors, Catania retractors, Henahan, and Wieder.