14.hanau's quint

14. Hanau’s Quint14. Hanau’s Quint

Michael Hamada DDSMichael Hamada DDSDivision of Advanced Prosthodontics, Biomaterials Division of Advanced Prosthodontics, Biomaterials

and Hospital Dentistryand Hospital Dentistry

UCLA School of DentistryUCLA School of Dentistry

This program of instruction is protected by copyright ©. No portion of this This program of instruction is protected by copyright ©. No portion of this program of instruction may be reproduced, recorded or transferred by program of instruction may be reproduced, recorded or transferred by any means electronic, digital, photographic, mechanical etc., or by any any means electronic, digital, photographic, mechanical etc., or by any information storage or retrieval system, without prior permission.information storage or retrieval system, without prior permission.

Hanau’s QuintHanau’s Quint

Five Factors Affecting Occlusal BalanceFive Factors Affecting Occlusal Balance– Condylar InclinationCondylar Inclination– Incisal GuidanceIncisal Guidance– Occlusal Plane InclinationOcclusal Plane Inclination– Compensating CurveCompensating Curve– Cuspal InclinationCuspal Inclination


Inter-relationship of these five factors may be Inter-relationship of these five factors may be described bydescribed by Theilman’s Formula Theilman’s FormulaIn order to maintain a balanced occlusion:In order to maintain a balanced occlusion:

C=Condylar Inclination

OccPlane

x Incisal Guidance

x Cuspal Inclination x CompCurve

C=Balanced Occlusion


OccPlane

x Incisal Guidance



OccPlane

x Incisal Guidance


When all five factors are in “balance” . . .


OccPlane

x Incisal Guidance


. . .“Balance” is maintained in excursives


OccPlane

x Incisal Guidance


When Incisal Guidance is increased . . .


OccPlane

x Incisal Guidance


. . . Posterior Disclusion will occur unless . . .


OccPlane

x Incisal Guidance


. . . Occlusal Plane Inclination, . . .


OccPlane

x Incisal Guidance


. . . Cuspal Inclination, . . .


OccPlane

x Incisal Guidance


. . . or Compensating Curve is Increased


OccPlane

x Incisal Guidance


Increasing the Compensating Curve

Correcting Posterior Disclusion by


OccPlane

x Incisal Guidance


Use of Flat Plane or 0º Posteriors

Monoplane Denture Occlusion


OccPlane

x Incisal Guidance


Posterior Disclusion with 0º Teeth

Monoplane Denture Occlusion


OccPlane

x Incisal Guidance



May be corrected by “Balancing Ramps”


OccPlane

x Incisal Guidance



Essentially increases Compensating Curve


OccPlane

x Incisal Guidance



Alternate solution to maintaining “balance”. . .


OccPlane

x Incisal Guidance



. . . is to decrease Incisal Guidance


OccPlane

x Incisal Guidance



is minimized by minimizing Incisal Guidance


OccPlane

x Incisal Guidance


The minimal disclusion can be corrected by

Balancing Ramp Addition (as before) or . . .


OccPlane

x Incisal Guidance


The minimal disclusion can be corrected by

. . . an increase in Occlusal Plane Inclination


Of the five factors, the patient presents you with Condylar Inclination

Occlusal Plane cannot be altered substantially since functional requirements dictate position


OccPlane

x Incisal Guidance



Within the confines of esthetics and phonetics, minimize Incisal Guidance in Complete Dentures to minimize inclined tipping forces

Adjust remaining factors to maintain balance


OccPlane

x Incisal Guidance


Bilateral Balanced Lingualized OcclusionBilateral Balanced Lingualized Occlusion

Working SideWorking Side

Centric OcclusionCentric Occlusion ProtrusiveProtrusive

Balancing SideBalancing Side

14.hanau's quint

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