Effect of different curing temperatures on the distortion at the posterior peripheral seal: An in vitro study.

Simple item page
dc.contributor.authorPasam, Nirmala
dc.contributor.authorHallikerimath, R B
dc.contributor.authorArora, Aman
dc.contributor.authorGilra, Shilpi
dc.date.accessioned2012-11-07T09:12:49Z
dc.date.available2012-11-07T09:12:49Z
dc.date.issued2012-05
dc.description.abstractContext: Most of the maxillary complete dentures do not adapt accurately to the cast because of the changes in the resin during polymerization. The amount of heat associated with processing of polymethyl methacrylate has been correlated with the adaptation of the processed denture base to its supporting tissues. Aims: This study conducted to determine the effect of different curing temperatures on the accuracy of fit of a complete maxillary denture and to compare with that of fiber-reinforced acrylic resins. Materials and Methods : An ideal maxillary rubber mould used to make an edentulous cast. Forty-eight stone casts made from the ideal rubber mould. Out of 48 identical stone casts, 44 stone casts with wax adapted processed using simple acrylic resin. The remaining four stone casts were processed using fiber-reinforced acrylic resin. However, processing time for 12 hrs was maintained constant for all the samples. The variable to investigate was the temperature. Therefore, four denture bases processed at each temperature from 60°C to 80°C with two-degree increments for a total of 44 samples using simple acrylic resin. Remaining four samples processed at 70°C using fiber-reinforced acrylic resin. A traveling microscope used to measure the discrepancy between each cast and its denture base. Statistical analysis used: Analyzed with Student's unpaired t test. Results : Minimum distortion was observed at 70°C. Maximum distortion was observed for the denture bases processed at 80°C. Amount of distortion increases as the processing temperature increases which was highly significant. Distortion was significantly high from 60 to 68°C in the decreasing order. Conclusion: This study verified the observation that maxillary complete denture base show the greatest discrepancy at the central portion of the posterior palatal seal region as the processing temperature increases.en_US
dc.identifier.citationPasam Nirmala, Hallikerimath R B, Arora Aman, Gilra Shilpi. Effect of different curing temperatures on the distortion at the posterior peripheral seal: An in vitro study. Indian Journal of Dental Research. 2012 May-June; 23(3): 301-304.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/142912
dc.language.isoenen_US
dc.source.urihttps://www.ijdr.in/article.asp?issn=0970-9290;year=2012;volume=23;issue=3;spage=301;epage=304;aulast=Pasamen_US
dc.subjectDistortionen_US
dc.subjectposterior palatal sealen_US
dc.subjectprocessing temperatureen_US
dc.subject.meshAcrylic Resins
dc.subject.meshDental Casting Technique
dc.subject.meshDenture Bases
dc.subject.meshDenture, Complete, Upper
dc.subject.meshSurface Properties
dc.subject.meshTemperature
dc.subject.meshTransition Temperature
dc.titleEffect of different curing temperatures on the distortion at the posterior peripheral seal: An in vitro study.en_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ijdr2012v23n3p301.pdf
Size:
1.13 MB
Format:
Adobe Portable Document Format
Description:
Journal article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Indian Journal of Dental Research