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The International Journal of Prosthodontics
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Int J Prosthodont 31 (2018), No. 4     3. July 2018
Int J Prosthodont 31 (2018), No. 4  (03.07.2018)

Page 334-337, doi:10.11607/ijp.5706, PubMed:29953562


Investigation of Clinical and Laboratory Wear in Locator-Supported, Implant-Retained Overdentures
Hahnel, Sebastian / Alamanos, Christos / Schneider-Feyrer, Sibylle / Stöckle, Matthias / Rosentritt, Martin
Purpose: To investigate the mechanical properties and wear of nylon inserts and abutments in Locator-retained, implant-supported overdentures (L-IODs).
Materials and Methods: Clinical wear of inserts and abutments was qualitatively rated in a group of 16 patients with L-IODs. The inserts were also subjected to microscopic analysis, differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA).
Results: Wear was identified in almost all inserts and abutments. These results were corroborated by DSC and TGA analyses, which showed significant mechanical deterioration of the inserts.
Conclusion: Nylon inserts and Locator abutments show relevant signs of deterioration in clinical use, indicating that regular maintenance is an issue that should be addressed with the patients prior to treatment.