Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What is the correct sequence for selective grinding when adjusting occlusion of dentures?

1. Balancing > Working > Protrusive > Centric

2. Protrusive > Balancing > Working > Centric

3. Centrics > Working > Balancing > Protrusive

4. Centric > Working > Balancing > Protrusive

The correct answer is: Centric > Working > Balancing > Protrusive

The correct sequence for selective grinding when adjusting the occlusion of dentures is essential for ensuring optimal function and comfort for the patient. Understanding the sequence helps maintain the harmony of occlusion while also addressing any discrepancies in jaw relationships. Starting with centric contacts allows the clinician to establish a stable relationship between the maxillary and mandibular denture during the maximum intercuspation position. This is critical because it sets the groundwork for the rest of the adjustments. Once centric occlusion is confirmed, the next step involves addressing working contacts, which are crucial during lateral excursions. This ensures that the occlusion remains stable when the patient chews or performs lateral movements. Following adjustments to working contacts, balancing contacts are addressed. These contacts are particularly important in maintaining denture stability during excursions to the opposite side. Finally, protrusive contacts are evaluated, which occur when the jaw moves forward. Adjusting these contacts last ensures that we maintain the integrity of the occlusion through all functional movements of the mandible. This sequence—centric, working, balancing, and then protrusive—therefore allows for a logical and structured approach to occlusal adjustment, minimizing the risk of interference that might lead to discomfort or dysfunctional occlusion. Each step builds on the previous one to