The use of mechanical interlock in dental prosthesis
Good long term outcomes in prosthetic dentistry depends on the stability of its abutment-implant construct. One of the abutment designs normally used is a cylindrical taper where interference fit is achieved on large contact pressure and frictional resistance at the interface. Other designs include...
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| Format: | Book Section |
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Springer Berlin Heidelberg
2008
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| Online Access: | http://eprints.utm.my/6954/ |
| _version_ | 1848891378489098240 |
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| author | Abdul Kadir, Mohammed Rafiq Osman, K. Zainuddin, A. I. |
| author_facet | Abdul Kadir, Mohammed Rafiq Osman, K. Zainuddin, A. I. |
| author_sort | Abdul Kadir, Mohammed Rafiq |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | Good long term outcomes in prosthetic dentistry depends on the stability of its abutment-implant construct. One of the abutment designs normally used is a cylindrical taper where interference fit is achieved on large contact pressure and frictional resistance at the interface. Other designs include the screw and a combination of screw and taper. The stability of the implant body relative to the bone is also crucial because inadequate fixation would prevent bone integration. This study analysed a concept design where the abutment is locked mechanically once inserted into the dental implant body. Non-linear finite element contact analysis was carried out on the new design, as well as on a design based on a simple taper for comparison. Three dimensional model of the mandible was reconstructed from CT dataset and a section of the mandible was chosen for analysis. Pressure was applied on the top surface of the abutment simulating the normal biting force. Results showed that the mechanical interlock design was 5 times more stable than the simple taper design. However, the threshold limit for osseointegration was not exceeded for both implants. Stresses exerted on the distal region of the abutment for the taper design was an order of magnitude higher than the one found on the mechanical interlock. |
| first_indexed | 2025-11-15T20:57:01Z |
| format | Book Section |
| id | utm-6954 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:57:01Z |
| publishDate | 2008 |
| publisher | Springer Berlin Heidelberg |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-69542017-07-25T03:30:45Z http://eprints.utm.my/6954/ The use of mechanical interlock in dental prosthesis Abdul Kadir, Mohammed Rafiq Osman, K. Zainuddin, A. I. TJ Mechanical engineering and machinery Good long term outcomes in prosthetic dentistry depends on the stability of its abutment-implant construct. One of the abutment designs normally used is a cylindrical taper where interference fit is achieved on large contact pressure and frictional resistance at the interface. Other designs include the screw and a combination of screw and taper. The stability of the implant body relative to the bone is also crucial because inadequate fixation would prevent bone integration. This study analysed a concept design where the abutment is locked mechanically once inserted into the dental implant body. Non-linear finite element contact analysis was carried out on the new design, as well as on a design based on a simple taper for comparison. Three dimensional model of the mandible was reconstructed from CT dataset and a section of the mandible was chosen for analysis. Pressure was applied on the top surface of the abutment simulating the normal biting force. Results showed that the mechanical interlock design was 5 times more stable than the simple taper design. However, the threshold limit for osseointegration was not exceeded for both implants. Stresses exerted on the distal region of the abutment for the taper design was an order of magnitude higher than the one found on the mechanical interlock. Springer Berlin Heidelberg 2008 Book Section PeerReviewed Abdul Kadir, Mohammed Rafiq and Osman, K. and Zainuddin, A. I. (2008) The use of mechanical interlock in dental prosthesis. In: IFMBE Proceedings. Springer Berlin Heidelberg, pp. 457-460. ISBN 1680-0737 https://link.springer.com/chapter/10.1007%2F978-3-540-69139-6_116 |
| spellingShingle | TJ Mechanical engineering and machinery Abdul Kadir, Mohammed Rafiq Osman, K. Zainuddin, A. I. The use of mechanical interlock in dental prosthesis |
| title | The use of mechanical interlock in dental prosthesis |
| title_full | The use of mechanical interlock in dental prosthesis |
| title_fullStr | The use of mechanical interlock in dental prosthesis |
| title_full_unstemmed | The use of mechanical interlock in dental prosthesis |
| title_short | The use of mechanical interlock in dental prosthesis |
| title_sort | use of mechanical interlock in dental prosthesis |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/6954/ http://eprints.utm.my/6954/ |