Diametral tensile strength and film thickness of an experimental dental luting agent derived from castor oil
| Autor: | Dalton Geraldo Guaglianoni, Salvador Claro Neto, Juliana Cabrini Carmello, Lígia Nunes de Moraes Ribeiro, Laiza Maria Grassi Fais, Lígia Antunes Pereira Pinelli |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Universidade Estadual Paulista (UNESP) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Dental Stress Analysis
Castor Oil Materials science Dental prosthesis Mineralogy Dental Cements Materials testing Tensile strength chemistry.chemical_compound Dental Materials Ultimate tensile strength Materials Testing medicine Humans Composite material Biocompatible materials General Dentistry Analysis of Variance Zinc phosphate Luting agent Original Articles Biocompatible material lcsh:RK1-715 chemistry Castor oil lcsh:Dentistry Calcium carbonate Zinc Phosphate Cement Zinc phosphate cement medicine.drug Ricinus communis |
| Zdroj: | Journal of Applied Oral Science, Volume: 20, Issue: 1, Pages: 16-20, Published: FEB 2012 Journal of Applied Oral Science, Vol 20, Iss 1, Pp 16-20 (2012) Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Journal of Applied Oral Science Journal of Applied Oral Science v.20 n.1 2012 Journal of applied oral science Universidade de São Paulo (USP) instacron:USP Scopus |
| Popis: | Made available in DSpace on 2013-08-12T18:00:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Made available in DSpace on 2013-09-30T18:32:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:46:28Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:46:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The need to develop new dental luting agents in order to improve the success of treatments has greatly motivated research. Objective: The aim of this study was to evaluate the diametral tensile strength (DTS) and film thickness (FT) of an experimental dental luting agent derived from castor oil (COP) with or without addition of different quantities of filler (calcium carbonate - CaCO3). Material and Methods: Eighty specimens were manufactured (DTS N=40; FT N=40) and divided into 4 groups: Pure COP; COP 10%; COP 50% and zinc phosphate (control). The cements were mixed according to the manufacturers' recommendations and submitted to the tests. The DTS test was performed in the MTS 810 testing machine (10 KN, 0.5 mm/min). For FT test, the cements were sandwiched between two glass plates (2 cm(2)) and a load of 15 kg was applied vertically on the top of the specimen for 10 min. The data were analyzed by means of one-way ANOVA and Tukey's test (alpha=0.05). Results: The values of DTS (MPa) were: Pure COP- 10.94 +/- 1.30; COP 10%- 30.06 +/- 0.64; COP 50%- 29.87 +/- 0.27; zinc phosphate- 4.88 +/- 0.96. The values of FT (pm) were: Pure COP- 31.09 +/- 3.16; COP 10%- 17.05 +/- 4.83; COP 50%- 13.03 +/- 4.83; Zinc Phosphate- 20.00 +/- 0.12. One-way ANOVA showed statistically significant differences among the groups (DTS - p=1.01E-40; FT - p=2.4E-10). Conclusion: The experimental dental luting agent with 50% of filler showed the best diametral tensile strength and film thickness. UNESPUniv Estadual Paulista, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, Araraquara, SP, Brazil Univ São Paulo, Inst Chem São Carlos, Dept Chem & Mol Phys, São Carlos, SP, Brazil UNESP Univ Estadual Paulista, Coll Letters & Sci, Dept Educ, Araraquara, SP, Brazil UNESPUniv Estadual Paulista, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, Araraquara, SP, Brazil UNESP Univ Estadual Paulista, Coll Letters & Sci, Dept Educ, Araraquara, SP, Brazil FAPESP: 06/02821-8 FAPESP: 06/00082-3 FAPESP: 07/02441-3 |
| Databáze: | OpenAIRE |
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