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weredefined, all teethwereproposedsimultaneously (Fig. 3).
By proposing all teeth at the same time, the software does a
nice job with contacts and proportions.
The crowns were milled out of Celtra Duo. One of the
main advantages of Celtra is that due to its structure, the
material mills very smoothly and efficiently with little risk
of marginal chipping. The crowns were customized using
Celtra Duo stain and glaze and then processed in the firing
oven for a cycle of 10:30 (Fig. 4). Oven firing significantly
increases the strength of the material and allows for subtle
staining. If significant strength is not desired and the oper-
ator wishes to simply polish the restoration, the strength
of the material will be roughly 210 mpa. By glazing, the
strength can be increased up to approximately 370 mpa.
Thecasewascementedwitharesin-basedadhesivesystem
(Fig. 5). Occlusion was checked and the patient dismissed,
alleviating the issue of food impaction and decay around the
dentition. The restorations served the patient well in that
they provided exceptional marginal fit and provided the
clinician the advantage of being able to just polish the resto-
ration, or if theywish to gain additional strength they can use
the oven. In this case because a molar was being replaced, all
restorations were glazed for additional strength.
Fig. 4:
Restorations
characterized
and glazed
Fig. 2: Virtual model of preparations
Fig. 3: Restorations proposed
Fig. 5: Restorations bonded in place
