Effect of Cyclic Dislodging on the Retention of Two Attachment Systems for Implant-supported Overdentures: An In Vitro Study
| Autor: | Hani Tohme, Jihad Fakhoury, Joseph E. Makzoumé, Carole Abi Ghosn Yared, Ziad Salameh, Paul Boulos, Maha Daou |
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| Rok vydání: | 2018 |
| Předmět: |
Orthodontics
Universal testing machine Materials science 0206 medical engineering 030206 dentistry 02 engineering and technology 020601 biomedical engineering Clinical Practice 03 medical and health sciences 0302 clinical medicine In vitro study General Dentistry Edentulous patient Implant supported |
| Zdroj: | The Journal of Contemporary Dental Practice. 19:1387-1393 |
| ISSN: | 1526-3711 |
| Popis: | PURPOSE The aim of this study was to compare and evaluate the retention of two new attachment systems used for implant-supported overdentures subjected to insertion-removal cycles. MATERIALS AND METHODS Twenty custom-manufactured polyvinyl chloride models mimicking implant-retained over-dentureresin blocks were fabricated and divided into two groups (n = 10): group 1 ('Kerator' attachment) and group 2 ('EMI' attachment). Each model received two parallel implants (JD evolution®) 20 mm apart and was subjected to cyclic retention forces of 10, 100, 1000, 5000, 10000 and 14600 cycles using a universal testing machine in a 0.9% sodium chloride water solution at 22° C. Data were analyzed using one-way analysis of variance; the level of significance was set at a 0.05). CONCLUSION Within the limitations of this in vitro study, both attachments reported satisfactory retentive values during the 14600 cycles, the 'Kerator' attachment showed better retention than the new 'EMI' attachment. The initial retentive force of both attachments has gradually decreased. CLINICAL SIGNIFICANCE Both attachment systems evaluated in this study can be used in clinical practice for implant-supported overdentures. |
| Databáze: | OpenAIRE |
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