|
KMID : 1034420190440040041
|
|
Restorative Dentistry & Endodontics
2019 Volume.44 No. 4 p.41 ~ p.41
|
|
|
The effect of preheating resin composites on surface hardness: a systematic review and meta-analysis
|
|
Elkaffas Ali A.
Eltoukhy Radwa I.
Elnegoly Salwa A.
Mahmoud Salah H.
|
|
|
Abstract
|
|
|
Objectives: This paper presents a systematic review and meta-analysis of the effect of preheating on the hardness of nanofilled, nanoceramic, nanohybrid, and microhybrid resin composites.
Materials and Methods: An electronic search of papers on MEDLINE/PubMed, ScienceDirect, and EBSCOhost was performed. Only in vitro studies were included. Non-English studies, case reports, clinical trials, and review articles were excluded. A meta-analysis of the reviewed studies was conducted to quantify differences in the microhardness of the Z250 microhybrid resin composite using the Comprehensive Meta-Analysis software.
Results: Only 13 studies met the inclusion criteria for this systematic review. The meta-analysis showed that there were significant differences between the non-preheated and preheated modes for both the top and bottom surfaces of the specimens (p < 0.05). The microhardness of the Z250 resin composite on the top surface in the preheated mode (78.1 ± 2.9) was higher than in the non-preheated mode (67.4 ± 4.0; p < 0.001). Moreover, the microhardness of the Z250 resin composite on the bottom surface in the preheated mode (71.8 ± 3.8) was higher than in the non-preheated mode (57.5 ± 5.7, p < 0.001).
Conclusions: Although the results reported in the reviewed studies showed great variability, sufficient scientific evidence was found to support the hypothesis that preheating can improve the hardness of resin composites.
|
|
|
KEYWORD
|
|
|
Composite temperature, Meta-analysis, Microhardness, Microhybrid, Preheated composite, Systematic review
|
|
|
FullTexts / Linksout information
|
|
  
|
|
|
Listed journal information
|
|
 
|
|