I took great interest in reading the October JADA Point/Counterpoint regarding the role of occlusion in periodontal disease.1,2 However, many problems exist in deciding whether occlusion causes or contributes to periodontal disease.
- How do we define periodontal disease? Is bone loss the same as periodontal disease? Do we confuse bone loss with periodontal disease?
- What is normal occlusion? What is occlusal trauma? What are occlusal discrepancies?
- Is the periodontal ligament different from other ligaments in the body that are overworked? We know other ligaments in the body break down when they get overused. Easier questions that we might be able to answer are the following:
- Do dentitions that have canine guidance have more buccal recession on maxillary canines than dentitions with group function?
- Do patients with Class III occlusion have less gingival recession than others?
It is also interesting to note that Dr. Gordon Christensen, later in the same October issue ("Implant Therapy, Versus Endodontic Therapy," JADA 2006;137(10):14403), feels that implants have questionable success when extreme occlusal forces are placed on them.