Effect of different torque levels on the implant/abutment interface using castable “UCLA” abutments

Authors

  • Gustavo Augusto Seabra Barbosa School of Dentistry of Ribeirão Preto, University of Sao Paulo.
  • Paulo Cézar Simamoto Junior Piracicaba Dental School, State University of Campinas
  • Alfredo Júlio Fernandes Neto Federal University of Uberlandia
  • Maria da Glória Chiarello Mattos School of Dentistry of Ribeirão Preto, University of Sao Paulo
  • Flávio Domingues Neves Federal University of Uberlandia

DOI:

https://doi.org/10.20396/bjos.v4i15.8641858

Keywords:

Dental implants. Prosthetic adjustment. Torque

Abstract

The abutment/implant interface has been reported as a significant factor on tensile transfer, adverse biological responses or prosthetic restoration complications. The abutment/implant junction success is directly related to pre-load attained during torque application. The purpose of this work was to assess the vertical fit/misfit degree on abutment/implant interface, when castable “UCLA” type abutments are used on fixed prosthesis process on implants, after different torque levels applications. Four three-unit fixed prosthesis were manufactured by the same laboratory. Torque was applied on the same framework using initially a 10 Ncm (T1) and later, a 20 Ncm torque level (T2) with a screwdriver hand Torquimeter. Trough scanning electronic microscope (SEM), it was obtained two photographs corresponding to mesial and distal regions of each prosthesis unit, summing 24 assessed regions to each applied torque value. After submitting the results to statistical analyses Paired T-Test (p<0.05), a significant difference was seen between the average vertical fit/misfit degree: T1 = 23.53mm ± 20.20; T2 = 9.01m ± 11.69 (p=0.000). The misfit degree decrease when applied manufacturers recommended torques, could decrease mechanical (loosening or fracture of the screw) complications.

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Author Biographies

Gustavo Augusto Seabra Barbosa, School of Dentistry of Ribeirão Preto, University of Sao Paulo.

graduate at Odontologia from Universidade Potiguar (2001), master's at Odontologia - Reabilitação Oral from Universidade Federal de Uberlândia (2003) and ph.d. at Odontology from Universidade de São Paulo (2006). Has experience in Odontology, acting on the following subjects: amálgama, prótese sobre implantes, moldagem, tratamento periodontal and oclusão

Paulo Cézar Simamoto Junior, Piracicaba Dental School, State University of Campinas

graduate at Odontologia from Universidade Federal de Uberlândia (2000), master's at Odontology from Universidade Federal de Uberlândia (2004) and ph.d. at Clinical Odontology from Universidade Estadual de Campinas (2008). Has experience in Odontology, acting on the following subjects: implantes dentários, prótese sobre implante, ensino, educação profissional e tecnológica and prótese fixa.

Alfredo Júlio Fernandes Neto, Federal University of Uberlandia

Graduate at Odontologia from Universidade Federal de Uberlândia (1975), master's at Reabilitação Oral from Faculdade de Odontologia de Bauru da Universidade de São Paulo (1982) and ph.d. at Reabilitação Oral from Faculdade de Odontologia de Ribeirão Preto da Universidade de São Paulo (1996). Has experience in Odontology, acting on the following subjects: implantes osseointegrados, oclusão, próteses sobre implantes, prótese fixa and prótese dentária.

Maria da Glória Chiarello Mattos, School of Dentistry of Ribeirão Preto, University of Sao Paulo

graduate degree at Odontologia from Faculdade de Farmácia e Odontologia de Ribeirão Preto Usp (1978), master's at Reabilitação Oral from Faculdade de Odontologia de Ribeirao Preto Usp (1985) and doctorate at Reabilitação Oral from Faculdade de Odontologia de Ribeirao Preto Usp (1990). Has experience in Odontology, focusing on Odontological Materials, acting on the following subjects: PARTIAL DENTURE,TITANIUM, INDIRECT COMPOSITES.

Flávio Domingues Neves, Federal University of Uberlandia

graduate at Odontologia from Universidade Federal de Uberlândia (1987), master's at Odontology from Faculdade de Odontologia de Ribeirão Preto (1996) and ph.d. at Odontology from Universidade de São Paulo (2000). Has experience in Odontology, acting on the following subjects: implantes osseointegrados, próteses sobre implantes, adaptação pilar-implante, estética and performace matigatória.

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Published

2015-11-19

How to Cite

1.
Barbosa GAS, Simamoto Junior PC, Fernandes Neto AJ, Mattos M da GC, Neves FD. Effect of different torque levels on the implant/abutment interface using castable “UCLA” abutments. Braz. J. Oral Sci. [Internet]. 2015 Nov. 19 [cited 2022 Dec. 3];4(15):919-22. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641858

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