Avaliação das propriedades mecânicas de cimentos resinosos convencionais e autocondicionantes
Mechanical properties evaluation of conventional and self-etching resin cements
Guedes, L.L.S.; Mattos, E.C.G.; Zani, I.M.; Prates, L.H.M.; Chain, M.C.
Rev. odontol. UNESP, vol.37, n1, p.85-89, 2008
Resumo
O objetivo deste estudo foi avaliar as propriedades mecânicas de quatro cimentos resinosos de dupla ativação: dois convencionais (Enforce F, Dentsply e RelyX ARC, 3M ESPE) e dois autocondicionantes (RelyX Unicem, 3M ESPE e Maxcem, Kerr). As propriedades analisadas foram resistência à compressão, à tração diametral e flexural. Os testes de resistência à compressão e à tração diametral foram realizados de acordo com o método descrito na especificação nº 96/1994-ADA. O teste de resistência flexural foi baseado na especificação nº 4049/2000-ISO. Os resultados foram analisados por ANOVA e pelo teste de Tukey (p < 0,05). Não houve diferença significativa na resistência à tração diametral entre os quatro cimentos testados. Para resistência compressiva e flexural, RelyX ARC (3M ESPE) mostrou resultados superiores aos dois cimentos autocondicionantes e similares ao do Enforce F (Denstply).
Palavras-chave
Cimentação, cimentos dentários, força compressiva, resistência à tração
Abstract
The purpose of this study was to evaluate the mechanical properties of four dual-cured resin cements: two conventional (Enforce F, Dentsply and RelyX ARC, 3M ESPE) and two self-etching (RelyX Unicem, 3M ESPE and Maxcem, Kerr). Properties analyzed were compressive, diametral tensile and flexural strength. The compressive and diametral tensile strength were accomplished according to the method described in the specification nº 96/1994-ADA. The flexural strength test was based on specification nº 4049/2000-ISO. The results were analyzed by ANOVA and Tukey’s Test (p < 0.05). There was no significant difference in diametral tensile strength among the four cements tested. For compressive and flexural strength, RelyX ARC (3M ESPE) was similar to Enforce F (Dentsply) and superior to the self-etching resin cements.
Keywords
Cementation, dental cements, compressive strength, tensile strength
Referências
1. Grieve AR. A study of dental cements. Br Dent J. 1969;127:405-10.
2. Braga RR, Cesar PF, Gonzaga CC. Mechanical properties of resin cements with different activation modes. J Oral Rehabil. 2002;29:257-62.
3. Attar N, Tam LE, McComb D. Mechanical and physical properties of contemporary dental luting agents. J Prosthet Dent. 2003;89:127-34.
4. Piwowarczyk A, Lauer HC. Mechanical properties of luting cements after water storage. Oper Dent. 2003;28:535-42.
5. Kumbuloglu O, Lassila LVJ, User A, Vallittu PK. A study of the physical and chemical properties of four resin composite luting cements. Int J Prosthodont. 2004;17:357-63.
6. Miranda C, Biasi EB, Prates LHM, Maia HP, Calvo MCM. Evaluation of mechanical properties of dual cure resin cements. PCL: Ibero-Am Prot Clin Lab. 2005;7(35):57-65.
7. Corrêa MD, Ribeiro CF, Cunha LA. Flexural strength of resin cements. Cienc Odontol Bras. 2006;9(1):93-8.
8. American National Standard Institute/American Dental Association. Specification nº 96. Dental water-based cements; 1994.
9. Anusavice KJ. Propriedades mecânicas dos materiais dentários. In: Anusavice KJ. Phillips materiais dentários. 11ª ed. Rio de Janeiro: Elsevier; 2005. p. 69-97.
10. American National Standard Institute/American Dental Association. Specification nº 27. Resin-based filling materials; 1993.
11. International Organization for Standardization. Specification nº 4049. Dentistry – polymer-based filling, restorative and luting materials; 2000.
12. Rosenstiel SF, Land MF, Crispin BJ. Dental luting agents: a review of the current literature. J Prosthet Dent. 1998;80:280-301.
13. Fonseca RG, Santos JG, Adabo GL. Influence of activation modes on diametrical tensile strength of dual-curing resin cements. Braz Oral Res. 2005;19:267-71.
Facebook
Google+
Twitter
LinkedIn
Mendeley
StumbleUpon
CiteULike
Reddit
Email