Influence of Two Types of Connections in Driver-Retention Screw Assembly
| Autor: | Jessyca Viviane Andrade Dias, Cypriano Galvão da Trindade Neto, Erika Almeida de Oliveira, José Renato Cavalcante de Queiroz, Samila Neres de Oliveira, Magnus Sérgio Martins de Paiva, Amilcar Chagas Freitas Júnior |
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| Rok vydání: | 2016 |
| Předmět: |
Dental Stress Analysis
Torque wrench Dental Abutments 02 engineering and technology Prosthesis Design Dental Prosthesis Retention 03 medical and health sciences 0302 clinical medicine Dental Implants Single-Tooth Medicine In vitro study Humans Crowns business.industry Hexagonal crystal system Significant difference Dental prosthesis Torsion (mechanics) 030206 dentistry General Medicine Structural engineering 021001 nanoscience & nanotechnology On resistance Prosthesis Failure Otorhinolaryngology Torque Surgery Dental Prosthesis Implant-Supported 0210 nano-technology business |
| Zdroj: | The Journal of craniofacial surgery. 28(2) |
| ISSN: | 1536-3732 |
| Popis: | Rehabilitation with implant-supported prostheses has reached high success rates. However, mechanical failures are still reported, mainly in retention screws of abutments in single implant-supported crowns; which is designed to be the weakest structure and the first component to fail under overloading. In this sense, the aim of this in vitro study was to evaluate the influence of different joint designs (square or hexagonal) on resistance to deformation of driver-retention screw assembly of 3 commercial brands (Neodent, Singular, and Sin). A total of 42 retention screws from 3 commercial brands were used. The samples were divided into 2 joint groups, square (SQU) and hexagonal (HEX), and separated by commercial brands. Several components (implants and abutments) with standard platform (4.1 mm in diameter) were used. The resistance to deformation of the driver-retention screw assembly was measured using an accurate digital torque wrench for all commercial brands (Neodent [NEO], Singular [SGL], and Sin [SIN]) and joint designs (square or hexagonal). It was found no statistically significant difference (P |
| Databáze: | OpenAIRE |
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