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Radiopacity and cytotoxicity of Portland cement associated with niobium oxide micro and nanoparticles
MESTIERI, Leticia Boldrin; TANOMARU-FILHO, Mário; GOMES-CORNÉLIO, Ana Livia; SALLES, Loise Pedrosa; BERNARDI, Maria Inês Basso; GUERREIRO-TANOMARU, Juliane Maria.
  • MESTIERI, Leticia Boldrin; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • TANOMARU-FILHO, Mário; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • GOMES-CORNÉLIO, Ana Livia; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • SALLES, Loise Pedrosa; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • BERNARDI, Maria Inês Basso; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • GUERREIRO-TANOMARU, Juliane Maria; Univ. Estadual Paulista. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
J. appl. oral sci ; 22(6): 554-559, Nov-Dec/2014. tab, graf
Article in English | LILACS, BBO | ID: lil-732588
ABSTRACT
Objective Mineral Trioxide Aggregate (MTA) is composed of Portland Cement (PC) and bismuth oxide (BO). Replacing BO for niobium oxide (NbO) microparticles (Nbµ) or nanoparticles (Nbη) may improve radiopacity and bioactivity. The aim of this study was to evaluate the radiopacity and cytotoxicity of the materials 1) PC; 2) White MTA; 3) PC+30% Nbµ; 4) PC+30% Nbη. Material and Methods For the radiopacity test, specimens of the different materials were radiographed along an aluminum step-wedge. For cell culture assays, Saos-2 osteoblastic-cells (ATCC HTB-85) were used. Cell viability was evaluated through MTT assay, and bioactivity was assessed by alkaline phosphatase activity assay. Results The results demonstrated higher radiopacity for MTA, followed by Nbµ and Nbη, which had similar values. Cell culture analysis showed that PC and PC+NbO associations promoted greater cell viability than MTA. Conclusions It was concluded that the combination of PC+NbO is a potential alternative for composition of MTA. .
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Full text: Available Index: LILACS (Americas) Main subject: Oxides / Silicates / Calcium Compounds / Aluminum Compounds / Dental Cements / Nanoparticles / Niobium Type of study: Risk factors Limits: Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: Univ. Estadual Paulista/BR

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Full text: Available Index: LILACS (Americas) Main subject: Oxides / Silicates / Calcium Compounds / Aluminum Compounds / Dental Cements / Nanoparticles / Niobium Type of study: Risk factors Limits: Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: Univ. Estadual Paulista/BR