Clinical Update quiz
The Clinical Update online is a free member service providing up to 11 FREE CPD hours per year.
Each month, the Clinical Update is published online. There are 11 Clinical Updates per year (February - December). This service is available to ADAVB and ADATas members only. Members can log in to view and answer the Clinical Update questions. If you answer at least eight out of 10 questions correctly, you will receive one hour of scientific CPD.
Please note: Each new Clinical Update will be available below from the first business day of each month.
December Clinical Update
Wear resistance of additively manufactured resin with different printing parameters and postpolymerization condition
Wan Q, Lee JH, Daher R, Karasan D, Myagmar G, Sailer I. Int J Prosthodont. 2024 Feb 21;37(7):55-62. doi: 10.11607/ijp.8538.
Compiled by Dr Sarah Chin
This article was originally published by The International Journal of Prosthodontics and has been edited for brevity and clarity.
Introduction
With the progression of digital dental technologies, additive manufacturing 3D (three-dimensional) printing or rapid prototyping, is economical in comparison with subtractive manufacturing involving milling a block of material which results in waste and potential structural defects which may result in stress concentration. 3D design data from computer-aided design (CAD) software is used to create the target object layer by layer. Multiple objects can be fabricated simultaneously and complex geometries created. Various types of 3D-printing polymer materials have been developed as interim restorative materials. Interim restorative materials should have good aesthetics, high wear resistance and adequate hardness for long-term use. If the interim restoration is worn down, loss of vertical dimension can result, causing problems in establishing a suitable intermaxillary relationship for a later definitive restoration.
Previous studies have reported that controllable printing parameters such as the printing orientation, layer thickness and postpolymerization procedures can influence the mechanical properties of the printed resin. Other studies have reported on flexural strength, hardness and fracture strength of printed materials. There are few studies on wear resistance.
The purpose of this study is to evaluate the influence of printing orientation, layer thickness, postpolymerization device and time and how these factors may affect wear resistance of the 3D-printed resins.
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Dcember 2024 Clinical Update | pdf
