Welcome to True Function Laboratory. We specialize in Inter-occlusal Splints and Snoring & Sleep Appliances. We supply dentists nationwide with consistently superior products based on their specific treatment plans and their patients’ individual needs. True Function Laboratory is founded on an unwavering devotion to quality and the successful treatment of TMJ and/or Sleep Apnea disorders. Call to get more information toll free at (877) 887-8522 If precision and quality are what you are looking for in a dental lab, then you are in the right place. We have provided Doctors all over the United States with our dependable service which has given us a recognizable and respected name in the dental community. Dental Offices throughout the United States and Canada trust True Function Laboratory for the following: Splints, Sleep Apnea, Orthodontics, Removables, Nightguards and more. True Function Laboratory is a medical device company based out of 7520 El Cajon Blvd, La Mesa, California, United States.