Influence of Screw Surface Treatment on Retention of Implant-Supported Fixed Partial Dentures
| Autor: | Leandro Moreira Pinto, Veridiana Resende Novais, Renata Borges Rodrigues, Cleudmar Amaral de Araújo, Marcos Boaventura de Moura, Paulo Cézar Simamoto Júnior |
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| Rok vydání: | 2017 |
| Předmět: |
Dental Stress Analysis
Materials science Removal torque Dentistry engineering.material Dental Prosthesis Retention 03 medical and health sciences 0302 clinical medicine Coating Fixed partial dentures Cyclic loading Humans Titanium Crowns Implant prosthesis business.industry 030206 dentistry Dental Prosthesis Design Torque engineering Denture Partial Fixed Implant Dental Prosthesis Implant-Supported Oral Surgery business 030217 neurology & neurosurgery Implant supported |
| Zdroj: | The Journal of oral implantology. 43(4) |
| ISSN: | 1548-1336 |
| Popis: | The aim of this study was to assess the effect of a diamond-like carbon (DLC) coating on the removal torque of prefabricated implant screws after cyclic loading. Four groups with two crowns supported by two implants (n = 5) were obtained according to splinted and nonsplinted prosthesis, using titanium or DLC screws (splinted crowns with titanium screw [STi], splinted crowns with DLC screw [SC], nonsplinted crowns and titanium screw [NSTi], and nonsplinted crowns and DLC screw [NSC]). The prosthetic screws were tightened at 32 Ncm and retightened, and the specimens were submitted to 106 mechanical cycles (4 Hz/98 N). After cyclic loading, loosening torque was evaluated, and the final measurements were performed. Data were analyzed by two-way analysis of variance and Tukey's test (α = .005). There was statistically significance in the interaction of screw × splinting (P = .003). For the group that used titanium screws, NSTi showed smaller removal torque compared with STi. It was concluded that the use of the DLC coating screws in nonsplinted prosthesis maintain the torque after cyclic loading. |
| Databáze: | OpenAIRE |
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