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Single Complete Dentures
Maxillary Single DenturesMore commonTeeth usually lost before their mandibular antagonists
Mandibular Single DenturesAvoid when possibleSevere ridge resorption due to forceStress reduction should be used Processed resilient denture linerOverdentureImplant retained denture
Single DenturesMore difficultGreater force causes: Displacement Fracture due to flexure Severe residual ridge resorption
Single DenturesMore difficultTooth malpositions decrease stability (extrusion, tipping, rotation) Difficulty balancing
Single Complete DentureOcclusal adjustment of natural teethReduce severe curve of Spee level supraeruptionsRecontour rotated teeth to permit contacts on flat surfaces
Single Complete DenturesReduce cusps in shaded area, to level plane of occlusionMock adjustment can be performed on a diagnostic cast Severe Curve of SpeeSupereruption
Avoid Single Denture Against Anterior Teeth AloneResorptionLooseningFractureCombination Syndrome
Avoid Single Denture Against Anterior Teeth AloneFabricate a RPD for Stress DistributionMake CD & RPD at the same timeEnsures optimal occlusion
Occlusion RimsUse to establish OVD, NOT Incisal DisplayOverbite will be incorporated when anterior teeth are set, lengthening incisal edges
Occlusion RimsFlat Surface for Opposing TeethNo inclinesIf steps in occlusal plane, provide flat areas for opposing natural teeth
Maxillo-Mandibular RelationsOcclusion Rims on RPD framework Opposes CD RimsCentric and eccentric records with AlluwaxOptimizes occlusion
Maxillo-Mandibular RelationsCrowns or bridges should be waxed up against the CD tooth setupOptimizes occlusionEnsures, changes can be made
Maxillo - Mandibular RelationsCentric RegistrationCUD usually stableExtraoral hand position if opposing natural dentition (less obtrusive)
Setting Anterior TeethMore difficultSetting for esthetics may produce excessive overbite with natural teeth Decreases stabilityCompromised position, used to balance need for esthetics & function
Posterior Denture Teeth Requires more adjustment to obtain stable centric contactsDenture teeth will not normally articulate well with natural dentitionPinpoint contacts/inclines, etc.
Tip:Increase incisal pin 1mmSet posterior teethLet wax hardenReturn pin to original position Adjust occlusion until pin touches table
Cast Metal Denture BaseUse if denture fractures repeatedlyUsual causes: Heavy forces from natural teeth Occlusal contacts on inclines Impingement on a bony midline flexing of the denture
Denture Teeth WearMore rapid against natural teethMore frequent recallsAdjust occlusion to prevent changes in stress distribution
Denture Teeth Wear More RapidlyNever use porcelain denture teeth Severe attrition of natural teethPrefer denture teeth to wear