Registered Dental Assistant (RDA) — Dentist Tree of Fairfield, Cypress, TX About us: Dentist Tree of Fairfield is a modern dental practice in Cypress, TX, dedicated to comfortable, high-quality care for our patients. What you'll do: Assist the dentist chairside during procedures (four-handed dentistry) - restorations, crowns, cosmetics, extractions, implants, root canals, laser therapy, dentures.