May, Lee Wei and John, Jacob and Seong, Lim Ghee and Abidin, Zubaidah Zanul and Ibrahim, Norliza and Danaee, Mahmoud and Mohd, Noorhayati Raja (2021) Comparison of cooling methods on denture base adaptation of rapid heat-cured acrylic using a three-dimensional superimposition technique. Journal of Indian Prosthodontic Society, 21 (2). pp. 198-203. ISSN 0972-4052, DOI https://doi.org/10.4103/jips.jips_41_21.
Full text not available from this repository.Abstract
Aim: To investigate the effect of different cooling methods on denture base adaptation of rapid heat-cured acrylic resin using 3D superimposition technique. Setting and Design: In vitro - Comparative study. Materials and Methods: Denture base adaptation of two different rapid heat-cured polymethyl methacrylate acrylic resins using five different cooling methods were compared. Forty maxillary edentulous stone cast were prepared to produce the denture bases with standardized thickness. The specimens were divided into five groups (n = 8) according to type of materials and cooling methods. The master stone cast and all forty denture bases were scanned with 3Shape E1 laboratory scanner. The scanned images of each of the denture bases were superimposed over the scanned image of the master cast using Materialize 3-matic software. Three dimensional differences between the two surfaces were calculated and color surface maps were generated for visual qualitative assessment. Statistical Analysis Used: Generalized Linear Model Test, Bonferroni Post Hoc Analysis. Results: All bench-cooled specimens showed wide green-colored area in the overall palatal surface, while the rapid cooled specimens presented with increased red color areas especially at the palate and post dam area. Generalized Linear Model test followed by Bonferroni post hoc analysis showed significant difference in the root mean square values among the specimen groups. Conclusion: Samples that were bench cooled, demonstrated better overall accuracy compared to the rapid cooling groups. Regardless of need for shorter denture processing time, bench cooling of rapid heat-cured PMMA is essential for acceptable denture base adaptation.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Three-dimensional-superimposition;Cooling methods;Denture base adaptation;Rapid cured polymethyl methacrylate |
| Subjects: | R Medicine > RK Dentistry R Medicine > RK Dentistry > Practice of dentistry. Dental economics |
| Divisions: | Faculty of Dentistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 28 May 2022 03:14 |
| Last Modified: | 28 May 2022 03:14 |
| URI: | http://eprints.um.edu.my/id/eprint/34847 |
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