Surface wear of All Zicronia, All PEEK and Zirconia-Peek Telescopic Attachments for Two Implants Retained Mandibular Complete Overdentures. In -Vitro study using scanning electron microscope.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2019, Vol 18, Issue 2
Abstract
Purpose: This study aimed to investigate and compare wear of telescopic attachments constructed from different tooth colored materials by evaluating surface changes of both primary and secondary copings using Scanning Electron Microscope (SEM). Materials and methods: Three identical clear acrylic resin models of completely edentulous mandibular arch were fabricated for this study. Two implants were installed bilaterally in canine region of the models by the aid of guide template. The models were scanned to design resilient telescopic attachment using CAD/CAM technology on the 3D image of the model. According to the material used to fabricate the telescopic attachment, the models were categorized as follows: 1-st group (PP) whereprimary and secondary telescopic copingswere constructed from peek, 2-nd group (ZZ) where primary and secondary telescopic copings were constructed from zirconia, 3-rd group (ZP) where the primary copings were made from zirconia and secondary ones were made from PEEK. Three identical mandibular complete overdentures were constructed. The secondary telescopic copings of each group were picked up in the overdenture fitting surface. Surface changes of primary and secondary copings were evaluatedusing scanning electron microscope (SEM) at time of secondary copings pickup (T0) and after simulation of 6 monthsofoverdenture use (T6). Results: Significant wear was shown within each group between T0 and T6 and between groups in both primary and secondary coping where the highest wear values were found in ZP group followed by PP and ZZ groups respectively. Conclusions: With respect to limitations of this study, it could be concluded that:Combining PEEK and Zro2 materials for telescopic attachment construction may be associated with more changes in surface topography in contrast to all PEEK or all zircon telescopic attachments.
Authors and Affiliations
Radwa M. K. Emera, Mohamed Elgamal, Mona M. Albadwei
Keywords
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- EP ID EP467575
- DOI 10.9790/0853-1802095968.
- Views 39
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