Nikolaos-Stefanos K (2018) Resin Composite Pre-Heating - A Literature Review of the Laboratory Results. Int J Oral Dent Health 4:074.


© 2018 Nikolaos-Stefanos K. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

RESEARCH ARTICLE | OPEN ACCESSDOI: 10.23937/2469-5734/1510074

Resin Composite Pre-Heating - A Literature Review of the Laboratory Results

Nikolaos-Stefanos Kampanas*

Department of Operative Dentistry, School of Dentistry, National and Kapodistrian University of Athens, Greece



Resin composite pre-heating is a recent innovative method that could be clinically beneficial by improving handling and marginal adaptation of the unset material paste.


The aim of this study was to gather all the laboratory trials regarding resin composite pre-heating and investigate how this technique affects the material.

Materials and methods

An electronic search was carried out in PubMed and Google scholar databases, covering the period from January 2003 to May 2018. Specific criteria were set in order to define the relevance of each study.


Eighteen articles were included. The most commonly studied variable was the degree of conversion. Five studies found it increased and two not statistically significant different. Marginal adaptation, viscosity and polymerization shrinkage were higher. Flexural strength found to be unaffected. The results varied about microhardness and polymerization shrinkage.


Preheating has positive effect on the degree of conversion, viscosity, marginal adaptation and microhardness of composite resins. The flexural strength remains unaffected, the polymerization shrinkage is worsened, while the results for the microleakage are unclear. Further studies are need to take place in order to assess the clinical significance of composite pre-heating.