Influence of Various Polishing Protocols on Polyether-EtherKetone Removable Partial Frameworks Fabricated By CAD / CAM (Scanning Electron Microscope Study)
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2019, Vol 18, Issue 2
Abstract
Purpose: This in vitro scanning electron microscope study was performed to evaluate the influence of various polishing protocols on polyether-ether-ketone removable partial frameworks surface topography that fabricated by CAD / CAM. Materials and Methods: an epoxy resin model represent maxillary class I Kennedy classification with remaining natural teeth extending from the first premolar on one side to the first premolar teeth on the other side were used in the study. First premolars and canines of epoxy resin model were prepared to receive full ceramo-metal crowns with mesial occlusal and cinglum rest seat, distal guiding planes, and first premolars mesio-buccal retentive undercuts of 0.50 mm depth. 3 specimens of themodified polyetheretherketoneRDP frameworks were fabricated by CAD/CAM techniques. According to polishing protocols the themodified polyetheretherketoneRDP frameworks were divided into three groups: Group I (control group): modified polyetheretherketoneRDP frameworks without polishing, Group II: modified polyetheretherketoneRDP frameworks was polished by using Abraso-Starglanz polishing system and Group III: modified polyetheretherketoneRDP frameworks was polished by using Acrypol polishing system. Surface changes between groups before and after polishing by different polishing protocols were evaluated by scanning electron micro-scope (SEM). Results: It was noted that (group I) showed the highest surface roughness while the lowest surface roughness and highly smooth surface was showed in (group II). By using Student’s t-test for comparing between groups, group II showed significance decrease in surface roughness compared to that in (group I) and group III where (p<0.001). Conclusions: Within the limitations of this study, it was concluded that: Polishing PEEK RPD framework with abraso-starglaz paste was the most effective and promising polishing technique in production of highly smooth surface than acrypol polishing paste. For the laboratory-based protocols, both abraso-starglaz and acrypol polishing pastes produce a significantly smoother PEEK surface than that of the non-polished PEEK.
Authors and Affiliations
Rajah Attayeb BDS, Mohamed Elgamal BDS, NohaElwaseefy BDS, Nesreen El Mekawy BDS
Keywords
Related Articles
- EP ID EP467785
- DOI 10.9790/0853-1802163439.
- Views 26
- Downloads 0
Applying Operations Research Techniques to Minimize Delays in Hospital Operations
Operations research (OR) focus on the application of analytical methods to facilitate better decisionmaking. Regardless of its convenience and multiplication of papers in the scholarly writing, there are as yet significa...
A Comparative Study Between Intravenous Propofol And An Equipotent Dose Of Thiopentone For The Insertion Of Laryngeal Mask Airway
Since its advent in 1981 by Dr. Archie Brain at the London hospital, the laryngeal mask airway (LMA) has turned out to be a boon for the anaesthesiologists .It not only forms an integral part of the difficult airway cart...
Spectrum of Central Nervous System Tumors - A Four Year Study In A Tertiary Care Center
Introduction: Tumours of central nervous system constitute 1%-2% of tumours in adults. Few studies are available from India which show a lower incidence of brain tumours compared to the developed countries. Not much is k...
The Study of Sciatic Nerve Based on Its Morphometric Measurements And It's Variations In Rayalaseema Region.
Introduction:Sciatic nerve is the thickest and longest nerve in the human body, consists mostly of lumbosacral fibres consisting L4, L5, S1, S2, S3, they are both sensory and motor. Sciatica has been torturing mankind fo...
A clinical study of Anorectal disorders in rural population.
Back ground and objectives: To study the pattern of anorectal disorders in our society. Materials and methods: This study was undertaken for a period of eight months from 1st February 2018 to 30th September 2018 comprisi...