The periodontal-restorative interface in fixed prosthodontics: tooth preparation, provisionalization, and biologic final impressions--Part II.

The delicate dento-gingival attachment apparatus must be treated with utmost care during all phases of preparation in the crevicular region. There is little room for error within these minute dimensions. The learning objective of this article is to encourage the dentist to be ever vigilant when approaching the subcrevicular tissues during biomechanical tooth preparation, provisionalization, biologic final impressions, and final cementation. Part I, published in the January/February, 1994, issue of PP&A, discussed the emergence profile, retraction, preparation modalities, and provisionalization. Part II discusses final impressions and casts derived from information provided by morphologically correct provisionals, surgically directed provisionalization, and final functional and aesthetic rehabilitative results.