Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Wax Try-in - 60
The Wax Try-in
The purpose of the wax try-in appointment is to verify all aspects of the denture tooth
setup – the appearance, phonetics, occlusal relationships and patient comfort. Normally two
try-in appointments are required, an initial wax try-in and a final wax tryin. Never overlook
problems you find in the wax try-in stages. If you or the patient find problems, the problems
may be more difficult or impossible to change after processing. Failure to make changes at
this stage might require removal, resetting and reprocessing of the teeth on the finished
denture – procedures that are more costly and time consuming.
A. Initial Wax Try-in
The main purpose of the initial try-in is to verify the appearance of the anterior teeth and
the accuracy of the centric record. Changes will almost always need to be made at this
appointment. At the initial try-in appointment, the dentist should make any changes which
would be difficult for the technician to make without the presence of the patient (e.g. many
esthetic problems with the anterior teeth). Other changes can be prescribed for the technician
to make.
1. Occlusal Vertical Dimension and Interocclusal Distance
The occlusal vertical dimension should be verified using the same techniques that were
used previously. At this point it is critical that 2-4 mm of interocclusal distance can be
measured and felt, and that the posterior denture teeth do not contact during assessment
of the closest speaking space. If the vertical dimension is incorrect, it should be changed
before altering other aspects of the denture setup, since it can affect the relationship of the
maxillary and mandibular teeth and the facial esthetics.