Preload and torque removal evaluation of three different abutment screws for single standing implant restorations
| Autor: | Eduardo Rolim Teixeira, Rafael Augusto Stüker, Nilza Pereira da Costa, João Carlos Pinheiro Beck |
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| Rok vydání: | 2008 |
| Předmět: |
musculoskeletal diseases
Time Factors Materials science Dental prosthesis medicine.medical_treatment Dentistry Dental Abutments Prosthesis Dental Prosthesis Retention Dental Materials Dental Implants Single-Tooth Coated Materials Biocompatible Materials Testing medicine Humans Dental Restoration Failure General Dentistry Strain gauge Titanium business.industry Screw Dental implants musculoskeletal system equipment and supplies lcsh:RK1-715 Preload surgical procedures operative Dental Prosthesis Design Torque lcsh:Dentistry Gold Alloys Original Article Dental Prosthesis Implant-Supported Stress Mechanical Implant Abutment business Abutment (dentistry) |
| Zdroj: | Journal of Applied Oral Science, Volume: 16, Issue: 1, Pages: 55-58, Published: FEB 2008 Journal of Applied Oral Science, Vol 16, Iss 1, Pp 55-58 (2008) Journal of Applied Oral Science Journal of Applied Oral Science v.16 n.1 2008 Journal of applied oral science Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1678-7757 |
| DOI: | 10.1590/s1678-77572008000100011 |
| Popis: | Several authors still consider the mechanical problems of fracture and component loosening as the main causes of failure of implant-supported restorations. The purpose of this in vitro study was to compare the preload of three types of screw for transmucosal abutment attachment used in single implant-supported prosthesis through strain gauge and removal torque measurements. Three external hex fixtures were used, and each received a transmucosal abutment (Cera One®), which was fixed to the implant with its respective screw: Group A- gold screw, Group B- titanium screw and Group C- surface-treated titanium screw (Ti-Tite®). Ten screws of each type were attached applying a 30.07±0.28 Ncm torque force and maintained in position for 5 minutes. After this, the preload values were measured using strain gauges and a measurement cell. Gold screws presented higher preload values (131.72±8.98 N), followed by surface-treated titanium screws (97.78±4.68 N) and titanium screws (37.03±5.69 N). ANOVA (p |
| Databáze: | OpenAIRE |
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