The Journal of Prosthetic Dentistry
Available online 10 May 2019
Abstract
The
recent evolution of digital technologies in dentistry has enabled
virtual 3D diagnostic analysis of a dentition before treatment, allowing
for virtual, minimally invasive treatment planning. In this report, an
extensively worn dentition was 3D virtual analyzed at an increased
vertical dimension of occlusion. Virtual waxing (exocad DentalCAD;
Exocad) and subsequent analysis of the need for minimally invasive
preparations were performed. Areas of each tooth without adequate
clearance for the minimal thickness of a definitive restoration (set at
1.5 mm in the software), including the amount of tooth substance to be
removed (GOM Inspect; GOM), were visualized in color. A preparation
guide was virtually designed according to this diagnostic plan (3-matic;
Materialise) and 3D printed (Connex3 Objet260; Stratasys) from resin
(VeroMagenta RGD851; Stratasys). The teeth were minimally prepared using
the guide, and the amount of preparation was validated by superimposing
the scan of the prepared model on the initial scan and comparing it
with the diagnostic plan.
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