1. 15. Concepts of Complete Denture Occlusion Michael Hamada DDS Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry UCLA School of Dentistry This program of instruction is protected by copyright ©. No portion of this program of instruction may be reproduced, recorded or transferred by any means electronic, digital, photographic, mechanical etc., or by any information storage or retrieval system, without prior permission.

5. Bilateral Balanced Denture Occlusion The stable simultaneous contact of opposing upper and lower teeth in centric relation position with a smooth bilateral gliding contact to any eccentric position within the normal range of mandibular function, developed to lessen or limit tipping or rotation of the denture bases in relation to the supporting structures.

8. Monoplane with Balancing Ramps Working Balancing Bilateral balanced occlusion can also be obtained with nonanatomic posterior teeth if balancing ramps are employed. In all lateral excursions you should observe at least three points of contact bilaterally if bilateral balance is to be achieved. Protrusive

11. Monoplane Occlusion (Neutrocentric Concept) Centric Balancing At balancing and protrusive positions there is separation of the denture teeth in the posterior regions leading to tipping of the dentures. This may be disadvantageous in the patients exhibiting parafunctional grinding habits

18. Posterior Tooth Forms

19. Anatomic Tooth Forms

20. Nonanatomic Tooth Forms

21. Semi-anatomic Tooth Forms

24. Is “Balance” necessary? Balanced occlusion Non-balanced occlusion vs Protrusive position Protrusive position

25. Is “Balance” Necessary? “ Bolus in” “ Balance out”

29. Balance and the Monoplane Occlusion Minimize vertical overlap within the dictates of esthetics and phonetics

30. Balance and Monoplane Occlusion Minimize vertical overlap within the dictates of esthetics and phonetics

32. Bilateral balance with anatomic denture teeth Balancing side

33. Lingualized Occlusion Lingualized Conventional Centric Occlusion Theoretically, there should be less lateral displacement of the denture and less lateral forces during function when using lingualized posterior denture teeth.

34. Setting the Maxillary Posteriors The lingual cusp tips should be in contact with the central fossae of the opposing mandibular teeth. The cuspal inclines of the mandibular teeth are relatively flat, resulting in potentially less lateral forces and displacement during function.

35. Lingualized Occlusion Balancing Side Working Side Centric Occlusion

36. Lingualized Occlusion