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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.
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Differences between Natural and Complete Denture Occlusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Natural Dentition Denture “Dentition”
Goals of Complete Denture Occlusion ,[object Object],[object Object],[object Object],[object Object],[object Object]
Types of Complete Denture Occlusion ,[object Object],[object Object],We prefer bilateral balance because this type of occlusal arrangement limits tipping of  the dentures during parafunctional movements,
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.
Bilateral Balanced Denture Occlusion ,[object Object]
Bilateral Balanced Denture Occlusion with Anatomic Posterior Denture Teeth ,[object Object],[object Object],[object Object],Protrusive Balancing Working Centric
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
Lingualized Opposing Monoplane with Balancing Ramps ,[object Object],Working Balancing
[object Object],[object Object],[object Object],[object Object],Monoplane Occlusion  (Neutrocentric Concept)
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
Hanau’s Quint ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hanau’s Quint ,[object Object],[object Object],C = Condylar Inclination OccPlane x   Incisal Guidance x  Cuspal Inclination x  CompCurve
Hanau’s Quint ,[object Object],[object Object],[object Object],Factors controlled by the dentist C = Condylar Inclination OccPlane x   Incisal Guidance x  Cuspal Inclination x  CompCurve
Hanau’s Quint ,[object Object],[object Object],[object Object],Factors controlled by the dentist C = Condylar Inclination OccPlane x   Incisal Guidance x   Cuspal Inclination x   CompCurve
Hanau’s Quint ,[object Object],[object Object],C = Condylar Inclination OccPlane x   Incisal Guidance x   Cuspal Inclination x   CompCurve
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Posterior Tooth Forms
Posterior Tooth Forms
Anatomic Tooth Forms
Nonanatomic Tooth Forms
Semi-anatomic Tooth Forms
Goals of Complete Denture Occlusion ,[object Object],[object Object],[object Object],[object Object],[object Object],In addition we would like to decrease lateral forces to the residual ridges.
General Concepts of Denture Occlusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Is “Balance” necessary? Balanced occlusion  Non-balanced occlusion vs Protrusive position Protrusive position
Is “Balance” Necessary? “ Bolus in” “ Balance out”
Is “Balance” Necessary? ,[object Object],[object Object],[object Object]
Is “Balance” Necessary? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Is “Balance” Necessary? ,[object Object],[object Object],[object Object],[object Object]
Balance and the Monoplane Occlusion Minimize vertical overlap within the dictates of esthetics and phonetics
Balance and Monoplane Occlusion Minimize vertical overlap within the dictates of esthetics and phonetics
Bilateral Balance ,[object Object]
Bilateral balance with anatomic denture teeth Balancing side
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.
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.
Lingualized Occlusion Balancing Side Working Side Centric Occlusion
Lingualized Occlusion
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Lingualized Occlusion ,[object Object],[object Object],[object Object],[object Object],[object Object],Indications for use Advantages
[object Object],[object Object],[object Object],[object Object],Complete Denture Occlusion
[object Object],Complete Denture Occlusion ,[object Object]

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15.concepts of complete denture occlusion

  • 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.
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  • 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.
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  • 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
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  • 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
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  • 24. Is “Balance” necessary? Balanced occlusion Non-balanced occlusion vs Protrusive position Protrusive position
  • 25. Is “Balance” Necessary? “ Bolus in” “ Balance out”
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  • 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
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  • 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
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