International Journal of Dentistry Research 2017; 2(1): 1-2 DOI:10.31254/dentistry.2017.2101
A technique to preserve spacer thickness during custom tray fabrication with autopolymerizing polymethylmethacrylate
Arvind Tripathi1 , Saumyendra V. Singh2 , Himanshi Aggarwal3 , Ashutosh Gupta4 , Deeksha Arya5
1. Professor and Head, Department of Prosthodontics, Saraswati Dental College, Lucknow, Uttar Pradesh, India
2. Professor (Jr. Gr.), Department of Prosthodontics, Faculty of Dental Sciences, King George’s Medical University UP, Lucknow, Uttar Pradesh, India
3. Senior Resident, Department of Prosthodontics, Faculty of Dental Sciences, King George’s Medical University UP, Lucknow, Uttar Pradesh, India
4. Junior Resident, Department of Prosthodontics, Saraswati Dental College, Lucknow, Uttar Pradesh, India
5. Associate Professor, Department of Prosthodontics, Faculty of Dental Sciences, King George’s Medical University UP, Lucknow, Uttar Pradesh, India
*Author to whom correspondence should be addressed.
Received: 22nd December, 2016 / Revised: 1st January, 1970 / Accepted: 10th February, 2017 / Published : 1st April, 2017
A precisely fabricated custom tray is imperative for impression accuracy and proper application of desired pressure/relief on edentulous arches. Although custom impression tray fabrication has been greatly simplified with the use of light polymerizing resin material; autopolymerizing polymethylmethacrylate (PMMA) with baseplate wax as spacer, still remains a commonly used combination for edentulous custom tray fabrication. However, heat of polymerization released during exothermic setting reaction of autopolymerizing PMMA resin during tray fabrication frequently results in wax softening/ melting, causing dimensional distortion, tray contamination and discrepancy in predetermined thickness of the wax spacer that can jeopardise its very objective. This article describes a simple technique to prevent change in desired thickness of wax spacer during custom tray fabrication with autopolymerizing PMMA.
Custom tray, Autopolymerising PMMA resin, Cellulose acetate sheet, Wax Spacer
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Copyright © 2017 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0.
