A custom palatal jig for segmented complete arch interim prosthesis shell: A step-by-step technique

Complete arch maxillary teeth preparation for fixed prosthodontic rehabilitation requires interim restorations that maintain the planned occlusal plane, vertical dimension of occlusion, and esthetics while accommodating multiple paths of insertion. Conventional splinted shell techniques require seating along a single path of insertion and may result in incomplete seating, distortion, marginal discrepancies, or locking when preparations are divergent. A segmented interim prosthesis shell technique guided by a custom palatal jig is described. The technique is designed to maintain spatial orientation while allowing the sequential relining of independent segments. Segmented interim prosthesis shells are digitally fabricated from a diagnostic waxing and indexed to a separately fabricated palatal jig that establishes the planned occlusal relationships. During preparation, each segment is relined along its respective path of insertion while the jig maintains the planned vertical dimension of occlusion and occlusal plane. This approach allows controlled sequential pickup of interim restorations while maintaining planned occlusal relationships and minimizing distortion associated with complete arch splinting. It is particularly useful in maxillary rehabilitations involving an altered vertical dimension of occlusion or with divergent preparations.