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Effect of filler composition of dental composite restorative materials on radiopacity in digital radiographic images
Author(s) -
Dionysopoulos Dimitrios,
Tolidis Kosmas,
Gerasimou Paris,
Papadopoulos Christos
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24333
Subject(s) - radiodensity , materials science , composite number , composite material , dentin , enamel paint , post hoc , filler (materials) , dental composite , dentistry , resin composite , digital radiography , radiography , medicine , surgery
The purpose of this study was to evaluate the effect of filler composition on the radiopacity of 16 dental composite restorative materials using digital radiography. Five disc‐shaped specimens of each composite material were prepared using Teflon molds and five enamel and dentin specimens were prepared from human teeth. The composite specimens were placed on a digital sensor together with a tooth fragment and an aluminum stepwedge and a digital dental X‐ray unit was used at the same exposure conditions. The mean gray values of each composite specimen, tooth fragment, and stepwedge were measured on the digital images using a software program. Statistical analysis of the data was implemented with one‐way ANOVA and post hoc Tukey's HSD test ( a = 0.05). The composites presented higher radiopacity than dental tissues ( p < 0.05), except Filtek Silorane which exhibited lower radiopacity than enamel ( p < 0.05). Linear regressions revealed a very low correlation between radiopacity and filler content of the composites. The composite restoratives presented great variations in radiopacity. Concentration and type of the radiopacifying agents included in the composites crucially affected radiopacity. The choice of the composite restorative materials is of great importance due to large variations in their radiopacity, which depends on their filler composition. POLYM. COMPOS., 39:E351–E357, 2018. © 2017 Society of Plastics Engineers