Lance Timmerman is a dentist who specializes in treating temporomandibular disorders (TMD) through a neuromuscular approach. The document discusses how an imbalance between the jaw joints, muscles, and teeth can lead to TMD symptoms like headaches, jaw pain, and ear problems. Treatment involves using diagnostic tools like scans and models to determine the cause of imbalance and create an orthotic that allows the jaw muscles to rest in a balanced position to relieve symptoms and prevent further damage over time. The goal is to achieve a balanced bite through customized treatment plans that may include orthotics, adjustments, restorations, or orthodontics.