24531 Trabuco Rd., Suite H, Lake Forest, CA 92630 Our dentist may recommend osseous surgery to help reduce periodontal pockets and remove disease-causing bacteria. This procedure can usually be completed in just one appointment at OC Splendid Smiles. Call 949-855-3368 today to schedule your consultation with Dr. Marianne Tanios and learn more about osseous surgery in Lake Forest, California.