PMID- 22782058 OWN - NLM STAT- MEDLINE DCOM- 20130212 LR - 20161125 IS - 0363-6771 (Print) IS - 0363-6771 (Linking) VI - 60 IP - 4 DP - 2012 Jul-Aug TI - Radiopacity of different shades of resin-based restorative materials compared to human and bovine teeth. PG - e237-43 AB - This study evaluated the radiopacity of different shades of resin-based restorative materials and compared the results to human and bovine dental hard tissues. Disk specimens 6 mm in diameter and 1 mm thick (N = 220, n = 10) were prepared from the following restorative materials: . eight shades of nanofilled composite (Aelite Aesthetic Enamel), . seven shades of nanohybrid composite (Grandio Universal), . six shades of photopolymerized polyacid modified compomer (Glasiosite), and . one shade of hybrid composite (X-tra fil U). Human canine dentin (n = 10), bovine enamel (n = 10), and an aluminum (Al) step wedge were used as references. The optical density values of each material were measured from radiographic images using a transmission densitometer. Al step wedge thickness and optical density values were plotted, and equivalent Al thickness (eq Al) values were determined for radiopacity measurements of each material. The data were analyzed using a non-parametric one-way ANOVA (Kruskal-Wallis), and multiple comparisons were made with a Student-Newman-Keuls post hoc test (a = 0.05). Different shades of resin-based restorative materials tested did not reveal statistically significant differences within each material group (p > 0.05). Radiopacity values of the resin-based restorative materials investigated varied depending on their types; however, within different shades of one material type, radiopacity values were comparable. Every shade of nanocomposite material other than Aelite Aesthetic Enamel Incisal LT Gray showed comparable radiopacity to human dentin. Other materials tested demonstrated higher radiopacity compared to human dentin and bovine enamel. FAU - Pekkan, Gurel AU - Pekkan G AD - Faculty of Dentistry, Department of Prosthodontics, Dumlupinar University, Kutahya, Turkey. FAU - Ozcan, Mutlu AU - Ozcan M LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Gen Dent JT - General dentistry JID - 7610466 RN - 0 (Aelite LS) RN - 0 (Carbon Compounds, Inorganic) RN - 0 (Compomers) RN - 0 (Composite Resins) RN - 0 (Contrast Media) RN - 0 (Dental Materials) RN - 0 (Glasiosite) RN - 0 (Grandio) RN - 0 (Methacrylates) RN - 0 (Silicon Compounds) RN - 0 (X-tra fil composite resin) RN - CPD4NFA903 (Aluminum) RN - WXQ6E537EW (silicon carbide) MH - Aluminum MH - Animals MH - Carbon Compounds, Inorganic/chemistry MH - Cattle MH - Color MH - Compomers/chemistry MH - Composite Resins/*chemistry MH - Contrast Media MH - Cuspid/diagnostic imaging MH - Densitometry/instrumentation MH - Dental Enamel/diagnostic imaging MH - Dental Etching/methods MH - Dental Materials/*chemistry MH - Dentin/diagnostic imaging MH - Humans MH - Methacrylates/chemistry MH - Nanocomposites/chemistry MH - Polymerization MH - Radiography MH - Silicon Compounds/chemistry MH - Tooth/*diagnostic imaging MH - X-Ray Film EDAT- 2012/07/12 06:00 MHDA- 2013/02/13 06:00 CRDT- 2012/07/12 06:00 PHST- 2012/07/12 06:00 [entrez] PHST- 2012/07/12 06:00 [pubmed] PHST- 2013/02/13 06:00 [medline] PST - ppublish SO - Gen Dent. 2012 Jul-Aug;60(4):e237-43.