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An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials
STATEMENT OF PROBLEM: The provisional restorative materials in fixed prosthodontics are basically bis-GMA resins which releases exothermic temperature while polymerization which can damage the pulp. Intrapulpal temperature exceeding 42.5°C found to result in irreversible damage to the pulp. The rema...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4832802/ https://www.ncbi.nlm.nih.gov/pubmed/27134426 http://dx.doi.org/10.4103/0972-4052.161569 |
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author | Piplani, Ankita Suresh Sajjan, M. C. Ramaraju, A. V. Tanwani, Tushar Sushma, G. Ganathipathi, G. Jagdish, K. Agrawal, Anil |
author_facet | Piplani, Ankita Suresh Sajjan, M. C. Ramaraju, A. V. Tanwani, Tushar Sushma, G. Ganathipathi, G. Jagdish, K. Agrawal, Anil |
author_sort | Piplani, Ankita |
collection | PubMed |
description | STATEMENT OF PROBLEM: The provisional restorative materials in fixed prosthodontics are basically bis-GMA resins which releases exothermic temperature while polymerization which can damage the pulp. Intrapulpal temperature exceeding 42.5°C found to result in irreversible damage to the pulp. The remaining thickness of dentine after tooth preparation control the conduction of heat released by the resins. PURPOSE: (1) To quantify the temperature changes in the pulp chamber using different provisional restorative materials. (2) To evaluate the peak temperature time of different materials used. (3) To compare the intrapulpal temperature changes with a variation in the width of the finish line. METHODOLOGY: Two intact mandibular molars were selected and designated as Specimen A and B. Tooth preparation was done to prepare a finish line of 1.2 mm and 1 mm width, respectively. Three provisional restorative materials were considered and they were grouped as Group I-Cool temp, Group II-Protemp-4, Group III-Integrity. A J thermocouple probe was placed into the pulp chamber to determine the rise in temperature. The temperature was recorded during polymerization at 30-s intervals until the peak temperature was reached. The same procedure was repeated for fabricating remaining provisional crowns. A total of 45 provisional crowns were fabricated for each specimen. RESULTS: Kruskal–Wallis test revealed that there was a significant difference in the temperature changes associated with the provisional restorative materials used. All the three provisional restorative materials were compared for 1.2 mm and 1 mm wide finish line. Integrity produced the highest temperature rise and the maximum temperature recorded was 40.2°C in 1.2 mm wide finish line. However, for a 1 mm wide finish line, Protemp-4 produced the highest temperature rise and the maximum temperature recorded was 40.3°C. It was observed that peak temperatures with Specimen B were more when compared with Specimen A. CONCLUSION: Cool temp showed least temperature rise in the pulp chamber. The order of rise in intrapulpal temperature in tested provisional materials using direct technique would be Cool temp, Integrity, and Protemp-4. |
format | Online Article Text |
id | pubmed-4832802 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-48328022017-01-01 An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials Piplani, Ankita Suresh Sajjan, M. C. Ramaraju, A. V. Tanwani, Tushar Sushma, G. Ganathipathi, G. Jagdish, K. Agrawal, Anil J Indian Prosthodont Soc Original Article STATEMENT OF PROBLEM: The provisional restorative materials in fixed prosthodontics are basically bis-GMA resins which releases exothermic temperature while polymerization which can damage the pulp. Intrapulpal temperature exceeding 42.5°C found to result in irreversible damage to the pulp. The remaining thickness of dentine after tooth preparation control the conduction of heat released by the resins. PURPOSE: (1) To quantify the temperature changes in the pulp chamber using different provisional restorative materials. (2) To evaluate the peak temperature time of different materials used. (3) To compare the intrapulpal temperature changes with a variation in the width of the finish line. METHODOLOGY: Two intact mandibular molars were selected and designated as Specimen A and B. Tooth preparation was done to prepare a finish line of 1.2 mm and 1 mm width, respectively. Three provisional restorative materials were considered and they were grouped as Group I-Cool temp, Group II-Protemp-4, Group III-Integrity. A J thermocouple probe was placed into the pulp chamber to determine the rise in temperature. The temperature was recorded during polymerization at 30-s intervals until the peak temperature was reached. The same procedure was repeated for fabricating remaining provisional crowns. A total of 45 provisional crowns were fabricated for each specimen. RESULTS: Kruskal–Wallis test revealed that there was a significant difference in the temperature changes associated with the provisional restorative materials used. All the three provisional restorative materials were compared for 1.2 mm and 1 mm wide finish line. Integrity produced the highest temperature rise and the maximum temperature recorded was 40.2°C in 1.2 mm wide finish line. However, for a 1 mm wide finish line, Protemp-4 produced the highest temperature rise and the maximum temperature recorded was 40.3°C. It was observed that peak temperatures with Specimen B were more when compared with Specimen A. CONCLUSION: Cool temp showed least temperature rise in the pulp chamber. The order of rise in intrapulpal temperature in tested provisional materials using direct technique would be Cool temp, Integrity, and Protemp-4. Medknow Publications & Media Pvt Ltd 2016 /pmc/articles/PMC4832802/ /pubmed/27134426 http://dx.doi.org/10.4103/0972-4052.161569 Text en Copyright: © The Journal of Indian Prosthodontic Society http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Piplani, Ankita Suresh Sajjan, M. C. Ramaraju, A. V. Tanwani, Tushar Sushma, G. Ganathipathi, G. Jagdish, K. Agrawal, Anil An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title | An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title_full | An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title_fullStr | An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title_full_unstemmed | An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title_short | An in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
title_sort | in-vitro study to compare the temperature rise in the pulp chamber by direct method using three different provisional restorative materials |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4832802/ https://www.ncbi.nlm.nih.gov/pubmed/27134426 http://dx.doi.org/10.4103/0972-4052.161569 |
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