Adjustment of cast metal post/cores modeled with different acrylic resins

Autores

  • João Milton Rocha Gusmão Universidade Estadual do Sudoeste da Bahia -UESB
  • Renato Piai Pereira Universidade Estadual do Sudoeste da Bahia -UESB
  • Guilhermino Oliveira Alves
  • Matheus Melo Pithon Universidade Estadual do Sudoeste da Bahia -UESB
  • David Costa Moreira Universidade Estadual do Sudoeste da Bahia -UESB

Resumo

Aim: Evaluate the performance of four commercially available chemically-activated acrylic resins (CAARs) by measuring the level of displacement of the cores following casting. Materials and Methods: Two devices were constructed to model the cores based on a natural tooth. Forty post/cores were modeled, 10 in each of the following CAARs: Duralay (Reliance Dental, Illinois, USA), Pattern Resin (GC, Tokyo, Japan), Dencrilay (Dencril, Sao Paulo, Brazil), and Jet (Clássico, Sao Paulo, Brazil). Two casting rings were included,
each of which contained 5 post/cores for each of the four CAARs tested, a total of 20 per ring. Following casting, the specimens were only sandblasted and separated from the feeding channels. The post/cores were
placed in device 1 and, with the aid of an optical microscope, were attached to a digital camera. Images were then taken of the adjustment between the core and the remaining tooth on the labial surface. The images were
processed using the Image Tool for Windows, version 3.0, measuring three fixed points in each specimen. Data were statistically analyzed using the ANOVA and Tukey test. Results: The 40 post/cores were divided
into eight groups according to resin brand and casting, obtaining the following results for mean and standard deviation (in mm): Dencrilay 0.192 CI (± 0.08), CII 0.058 (± 0.03); Duralay CI 0.097 (± 0.03), CII 0.131 (±
0.06); Pattern CI 0.07 (± 0.03), CII 0.10 (± 0.05); and Jet CI 0.06 (± 0.02), CII 0.382 (± 0.17). Statistically significant differences could be identified when comparing the Dencrilay CI and the Jet CII with the remaining groups, which all proved to be unfavorable. Conclusion: The quality of cast metal post/core adjustment is not associated with the use of a specific acrylic resin.
Uniterms: Post and core techinique. Acrylic resins.

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Biografia do Autor

João Milton Rocha Gusmão, Universidade Estadual do Sudoeste da Bahia -UESB

Departamento de Saúde, Universidade Estadual do Sudoeste da Bahia (UESB), Vitória da Conquista, BA, Brasil

Renato Piai Pereira, Universidade Estadual do Sudoeste da Bahia -UESB

Departamento de Saúde, Universidade Estadual do Sudoeste da Bahia (UESB), Vitória da Conquista, BA, Brasil

Guilhermino Oliveira Alves

Cirurgião dentista

Matheus Melo Pithon, Universidade Estadual do Sudoeste da Bahia -UESB

Departamento de Saúde, Universidade Estadual do Sudoeste da Bahia (UESB), Vitória da Conquista, BA, Brasil

David Costa Moreira, Universidade Estadual do Sudoeste da Bahia -UESB

Departamento de Saúde, Universidade Estadual do Sudoeste da Bahia (UESB), Vitória da Conquista, BA, Brasil

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Publicado

2016-06-10

Como Citar

Gusmão, J. M. R., Pereira, R. P., Alves, G. O., Pithon, M. M., & Moreira, D. C. (2016). Adjustment of cast metal post/cores modeled with different acrylic resins. Arquivos Em Odontologia, 49(1). Recuperado de https://periodicos.ufmg.br/index.php/arquivosemodontologia/article/view/3620

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