Journal article

Publication year: 2010

Pages: 964-973

Journal: Journal of Dentistry

Volume number: 38

Issue number: 12

ISSN: 0300-5712

eISSN: 1879-176X

DOI Link: https://doi.org/10.1016/j.jdent.2010.08.008

Publisher: Elsevier

Abstract: 

Objectives Temporary crowns and fixed partial denture materials (t c&b) generate exother mic heat during polymerization The amount of temperature reaching the pulp chamber is dependant on the residual thickness of the prepared dentin as well as the volume of the t c&b used Hence the aim of this study was to investigate the influence of both factors on the temperature rise at the pulpal dentin surface as well as in the bulk of the t c&b during polymerization

Methods Four t c&bs (Luxatemp AM Plus Protemp 3 Garant Structur Premium Trim) were used to fabricate flat cylindrical specimens (circle divide 15 5 mm) of different thicknesses (1 2 and 4 mm) using an over impression placed on top of dentin discs (thickness 0 5 1 and 2 mm) Temperature was recorded at the pulpal dentin surface as well as inside the t c&b (n = 6) Data was subjected to parametric statistics (alpha = 0 05)

Results Peak temperatures inside the t c&b varied between 37 0 degrees C and 51 9 degrees C and at the pulpal dentin side between 37 0 C and 506 C The maximum temperatures registered depended significantly on the thickness of the dentin disc and t c&b respectively (ANOVA p < 0 05) Peak temperatures were reached 2-3 min after start of mixing (dimethacrylates) and 6 mm (mono methacrylate) respectively whereas Trim exhibited significantly higher peak temperatures (p < 0 05)

Conclusions At 4 mm layer thickness of the t c&b temperature rise may become critical if the material is not cooled properly Composite based t c&bs showed significant lower curing temperatures than Trim and should therefore be preferred in daily practice (C) 2010 Elsevier Ltd All rights reserved

Harvard Citation style: Seelbach, P., Finger, W., Ferger, P. and Balkenhol, M. (2010) Temperature rise on dentin caused by temporary crown and fixed partial denture materials: Influencing factors, Journal of Dentistry, 38(12), pp. 964-973. https://doi.org/10.1016/j.jdent.2010.08.008

APA Citation style: Seelbach, P., Finger, W., Ferger, P., & Balkenhol, M. (2010). Temperature rise on dentin caused by temporary crown and fixed partial denture materials: Influencing factors. Journal of Dentistry. 38(12), 964-973. https://doi.org/10.1016/j.jdent.2010.08.008