title: Radiopacity evaluation of root-end filling materials by digitization of images.
abstract: The purpose of this study was to evaluate the radiopacity of 5 root-end filling materials (white MTA-Angelus, grey MTA-Angelus, IRM, Super EBA and Sealer 26). Five specimens (10 mm diameter X 1 mm thickness) were made from each material and radiographed next to an aluminum stepwedge varying in thickness from 2 to 16 mm. Radiographs were digitized and the radiopacity of the materials was compared to that of the aluminum stepwedge using VIXWIN 2000 software in millimeters of aluminum (mm Al). Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. Radiopacity values varied from 3 mm Al to 5.9 mm Al. Sealer 26 and IRM presented the highest radiopacity values (p<0.05), while white/grey MTA and Super EBA presented the lowest radiopacity values (p<0.05). The tested root-end filling materials presented different radiopacities, white/grey MTA and Super EBA being the least radiopaque materials.
authors.affiliation: Department of Restorative Dentistry, Dental School of Araraquara, São Paulo State University, Araraquara, SP, Brazil.
authors.forename: Mario
authors.initials: M
authors.lastname: Tanomaru-Filho
authors.forename: Guilherme Ferreira
authors.initials: GF
authors.lastname: da Silva
authors.forename: Marco Antonio Húngaro
authors.initials: MA
authors.lastname: Duarte
authors.forename: Marcelo
authors.initials: M
authors.lastname: Gonçalves
authors.forename: Juliane Maria Guerreiro
authors.initials: JM
authors.lastname: Tanomaru
mesh_terms: D000535:Aluminum / Q000737:chemistry; D017607:Aluminum Compounds / Q000737:chemistry; D001729:Bismuth / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D003287:Contrast Media / Q000737:chemistry*; D003720:Densitometry / Q000295:instrumentation / Q000379:methods; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004338:Drug Combinations; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D019252:Radiography, Dental, Digital / Q000379:methods*; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003287:Contrast Media; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D008768:Methylmethacrylates; D010087:Oxides; D012387:Root Canal Filling Materials; C080620:Sealer 26; D017640:Silicates; D015035:Zinc Oxide-Eugenol Cement; C086631:mineral trioxide aggregate; C031667:IRM cement; C084074:Super EBA; D000535:Aluminum; D002126:Calcium Hydroxide; D001729:Bismuth