Authors : Khalid Abograra Ahmad Shaban, Fatma Mahanna, Nesreen El Mekawy
DOI : 10.18231/j.aprd.2019.023
Volume : 5
Issue : 4
Year : 2019
Page No : 97-103
Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK removable partial dentures fabricated with various techniques.
Materials and Methods: Six patients were selected for this study with maxillary completely edentulous arch against mandibular distal extension ridges posterior to canine teeth. each patient was randomly given the following frameworks in a crossover design; Group I: All patients were received PEEK frameworks fabricated by milling via CAD-CAM technique (PEEK disc were used). Group II: All patients were received PEEK frameworks fabricated by injection molding technique (Granular form of medical grade PEEK). For each framework (milled & injected), the fitness evaluation were done by measuring the gap between the framework and oral structures by evaluation the thickness of light body poly vinyl- siloxane impression material.
Results: The mean overall and site specific values of Gap distance beneath frameworks fabricated by CAD-CAM technique was significantly higher than the mean values of Gap distance in frameworks fabricated by injection technique.
Conclusion: Within the limitations of this short-term clinical study it was concluded that: 1) The fitness of both techniques of the RPD PEEK BioHPP frameworks manufacture were clinically accepted by the participants. 2) The RPD PEEK BioHPP frameworks manufactured by CAD / CAM was less fitness values than BioHPP frameworks constructed by Injection molding technique.
Keywords: Kennedy class I, Polyetheretherketone, CAD/CAM technique, Injection mold technique, Removable partial denture fitness..