Reproduction of the appropriate emergence profile is essential in order to accurately replace missing tooth structure, according to Dr. Burney Croll, guest lecturer at the postgraduate prosthetic programs of NYU, Columbia and the University of Pennsylvania’s dental schools. Using reliable anatomic models is valuable in helping achieve this goal.
According to Dr. Croll, photographic data revedals that in natural teeth, straight emergence profiles are the norm. The clinical relevance for this is straightforward: a straight emergence in artificial crowns improves the effectiveness of oral hygiene measures near the gingival sulcus. To this end, the axial profile of teeth can be viewed as a series of straight lines with curved transitions and the reproduction of these geometric patterns facilitates fabrication of restorations that appear natural.
Learners will understand that the fit of a crown is only one facet of fabricating a restoration to keep the soft tissues surrounding a tooth healthy and in function, and that the emergence angles over the CEJ in natural maxillary teeth are crucial to good gingival health… and a fundamental requisite for fabricating restorations.
After completing this course the participant should be able to:
Understand the Emergence Profile Concept
Make objective observations of natural tooth contour
Prepare teeth for fixed restorations that can restore naturally occurring tooth contour
Communicate the conveniently hygienic tooth contour design with the dental laboratory