Dennis Orthodontics Lab on Chula Vista's Third Avenue fabricates custom orthodontic appliances, retainers, and corrective devices from a laboratory suite in the Third Avenue Village district. The lab produces mandibular advancement devices prescribed for obstructive sleep apnea, working from bite registrations submitted by referring physicians including ENT Associates of San Diego. Product lines include Hawley retainers, Essix clear retainers, palatal expanders, functional appliances, and bonded lingual wire retainers, all fabricated from polyvinyl siloxane or alginate impressions taken at the referring practice. Turnaround workflows serve orthodontic offices across Chula Vista and the broader South Bay region, shipping finished appliances within standard laboratory production cycles. TMJ stabilization splints fabricated from hard acrylic resin also route through the lab for chiropractors and jaw-disorder specialists such as Kohler Chiropractic who prescribe occlusal guards as part of musculoskeletal treatment plans. Precision orthodontic retainers use 0.030-inch Essix ACE plastic vacuum-formed over stone-cast models at 1.5 mm thickness, trimmed along the gingival margin for passive post-treatment tooth retention.