Page 44 - MDA MIDEC 2024 Programme Book

ORAL PRESENTATION ABSTRACTS

P001 Name of Presenter: Guan Xin, The National University of Malaysia
Title of Presentation: Digital workflow for designing stereolithographic templates in
computer-assisted tooth reduction for porcelain laminate veneers: A scoping Review

Abstract
Guan X 1,*, Tew IM 1, Beh YH1
1 Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur,
Malaysia.
Introduction: Tooth reduction guide is essential for enamel preservation during tooth preparation of
porcelain laminate veneers to ensure a long-term success. Studies on clear digital workflows for designing
stereolithographic templates in computer-assisted tooth reduction for porcelain laminate veneers are
lacking.
Objectives: The purpose of this scoping review was to identify the publications that described a digital
workflow on computer-assisted tooth reduction for laminated porcelain veneers.
Methodology: A systematic search was conducted in MEDLINE/PubMed, Web of Science and Scopus to
identify articles published between year 2014 to March 2024 in the English language. The recruited articles
met the eligibility criterion of articles that digitally designed and fabricated tooth reduction guides in
tooth preparation for porcelain laminate veneers. Articles reporting on a conventional tooth preparation
procedure or digitally designed guides for tooth reduction assessment were excluded.
Results: Seven clinical reports met inclusion criteria. The software used for designing stereolithographic
templates varied among the included articles. Four articles favored ExoCad dental software, while other three
used Meshmixer, Viax Dental Technologies, and 3Shape software respectively. Prior to designing templates,
only four articles incorporated virtual tooth preparation. Most articles reported fabricating a single template
while the other two articles reported designing a series of templates for step-by-step tooth preparation. Two
articles described tube designs, two articles featured cross shapes, one article applied the first-fit system
technique, and the remaining two used open window and access designs. All articles reported printing the
templates using resin with various types of 3D printers. The limitations of the templates varied depending
on their designs, fabrication, and application in clinical practice.
Conclusion: There is a lack of standardization in the digital workflow for designing stereolithographic
templates for laminated porcelain veneers, largely due to significant variability in the software and method
used, as well as the number and designs of the templates.
Key words: Dental esthetic, CAD/CAM, tooth reduction, veneer

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