Comparison of biogenerically reconstructed and waxed-up complete occlusal surfaces with respect to the original tooth morphology.

Clinical Oral Investigations
Maximilian KollmussKarin Christine Huth

Abstract

Recently, it has become possible to reconstruct complete occlusal surfaces using the biogeneric tooth model. This study aimed to mathematically assess and compare the morphologic agreement between original morphology and CAD-reconstructed, waxed-up and CAM partial crowns. Thirty-nine intact first permanent molars (39 participants) were included. Impressions, bite registrations and three gypsum replicas were made. Preparations for CAD/CAM partial crowns were performed and scanned. The restorations were biogenerically reconstructed (CEREC® v3.80) and milled. Wax-ups of these preparations were scanned as well as the milled restorations and original teeth. Discrepancies were evaluated by matching the scans with the original morphologies (Match3D, output: volume/area, z difference) and by contact patterns. The discrepancies were compared between CAD-reconstructions and either wax-ups or milled restorations (paired t test, α = 0.025 for two multiple tests). The mean differences between natural tooth morphology (triangular stabilisation 71.8%) and biogeneric reconstructions, wax-ups and milled restorations (triangular stabilisation 87.2%) were: 184 ± 36 μm (volume/area), 187 ± 41 μm (z difference); 263 ± 40 μm (volume/area), 269 ± 45 ...Continue Reading

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Citations

Jan 28, 2016·The Journal of Advanced Prosthodontics·Yeliz ArslanHandan Yılmaz
Jun 18, 2016·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Lauren Oliveira Lima BohnerNewton Sesma
Apr 8, 2017·The Journal of Prosthetic Dentistry·Lauren Oliveira Lima BohnerPedro Tortamano Neto
May 15, 2020·Dental Materials Journal·Toshinori OkawaFumiaki Kawano
Nov 18, 2018·Journal of Prosthodontic Research·Almina MuricGulumser Evlioglu
Oct 4, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Adolfo Di FioreBurak Yilmaz
Feb 8, 2021·The Journal of Prosthetic Dentistry·Linlin LiYuchun Sun
Apr 10, 2021·Case Reports in Dentistry·Rim KallalaTeva Courset
Jul 21, 2021·The Journal of Prosthetic Dentistry·Marta Revilla-LeónVinayak R Krishnamurthy

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