kennedyⅰ-ⅳ类牙列缺损课件.ppt

Kennedy Ⅰ-Ⅳ类牙列缺损的设计研究生 潘领战 孟波 林川 指导老师 肖茂春教授 Kennedy Ⅰ-Ⅳ类牙列缺损的设计活动义齿临床设计的思路Kennedy Ⅰ-Ⅳ类牙列缺损的修复设计 Considerations for removable prosthesesDecide which of the missing teeth are to be replaced and which saddles are to be restoredDeciding on the nature of the supportDeciding on the form of the major connectorDeciding on how the prosthesis will be retainedPlanning for stabilityReview of design with hygiene and maintenance in mind Deciding which of themissing teeth are to be replaced and which saddlesare to be restoredplan holistically“formulate a tentative denture design concurrent with the formulation of the treatment plan.〞 Deciding on the nature of thesupport? Class I: Denture supported by mucosa and underlying bone Result in Displace mucosa further loss of alveolar bone ? Class II: Denture supported by teeth Help to maintain alveolar bone means? Class III: Denture supported by a combination of mucosa and tooth-borne means. instability? Class IV: Denture supported by implants Cingulum restsocclusal restsIncisor restsOver denture Deciding on the form of the majorconnectorMaxillary common major connectorsPalatal platePalatal strapAnterior or posteriorpalatal barSkeletal designHorseshoe designLabial bar Deciding on the form of the majorconnectorMandibular common major connectorsLingual plateLingual barKennedy bar.Sublingual barLabial bar Deciding on how the prosthesis willbe retainedDirect retainersOcclusally approaching claspGingivally approaching claspthimble crowntooth-coloured polymeric materialclasp Deciding on how the prosthesis willbe retainedDirect retainersuse of undercuts not on buccal or lingual of teeth Use of bony undercuts, e.g labial undercuts in teeth anterior bounded saddlesRotational path of insertion.Guide planes Deciding on how the prosthesis willbe retainedDirect retainersPrecision attachmentsUse of resilient materialsSoft linerDenture adhesives Planning for stabilityindire