The influence of zirconia veneer thickness on the degree of conversion of resin-matrix cements: an integrative review

The main aim of this study was to conduct an integrative review on the influence zirconia veneer thickness degree conversion resin-matrix cements. An electronic search performed PubMed using a combination following items: zirconia, thickness, veneer, conversion, resin cement, light curing, and polymerization. Articles published in English language, up July 2020, were included regarding ceramic Randomized controlled trials prospective cohort studies also evaluated. Of 21 selected studies, 9 investigated light-curing effect, while five other articles evaluated translucency. Three cement four assessed thickness. Results revealed significant decrease transmission through with ranging from 0.1 1.5 mm. However, ultra-thin around 0.3 mm allowed full polymerization dual-curing resulting integrity interface properties. process cements is affected by shade, chemical composition, microstructure cement. Optimal conditions are required reach threshold intensity energy for increase negatively affects Also, shade key factor improve curing Clinicians should consider resin-based cementation since higher can affect irradiation towards Thus, leading low stability (e.g., color instability) poor mechanical