Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study
Makky, M., Shokry, T., Metwally, M. (2020). Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study. EKB Journal Management System, 23(4), 355-362. doi: 10.21608/ajdsm.2020.26019.1035
Mohammad Ramadan Makky; Tamer Elhamy Shokry; Mohammad Fawzy Metwally. "Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study". EKB Journal Management System, 23, 4, 2020, 355-362. doi: 10.21608/ajdsm.2020.26019.1035
Makky, M., Shokry, T., Metwally, M. (2020). 'Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study', EKB Journal Management System, 23(4), pp. 355-362. doi: 10.21608/ajdsm.2020.26019.1035
Makky, M., Shokry, T., Metwally, M. Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study. EKB Journal Management System, 2020; 23(4): 355-362. doi: 10.21608/ajdsm.2020.26019.1035

Comparison of Marginal and Internal Fit of Copings Fabricated from Polyetheretherketone and Zirconia: An in-vitro study

Al-Azhar Journal of Dental Science
Article 6, Volume 23, Issue 4, October 2020, Page 355-362  XML PDF (571.48 K)
Document Type: Original Article
DOI: 10.21608/ajdsm.2020.26019.1035
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Authors
Mohammad Ramadan Makky email 1; Tamer Elhamy Shokry2; Mohammad Fawzy Metwally3
1Crown and Bridge Department, Faculty of Dentistry, AL Azhar University, Cairo, Egypt.
2Department of Crown and Bridge, Faculty of Dental Medicine, Al-Azhar University in Cairo-Egypt.
3Department of Crown and Bridge,Faculty of Dental Medicine, AL Azhar university. Cairo Egypt.
Abstract
ABSTRACT
Objective: This study evaluated the marginal and internal fit of pressable versus machinable polyetheretherketone (PEEK) and versus zirconia copings.
Material and Methods: Twenty one copings of lower molar were used in this study, which were divided according to type of material used and method of manufacturing into three main groups: seven specimens each, zirconia (Zr), PEEK CAD (PC) and PEEK press (Pp) groups. Copings were subjected to three dimension (3D) analysis of marginal and internal fit by using a triple scan protocol.
Results: The results of this study showed that zirconia group recorded statistically significant P=0.02 (P<0.05) lower absolute marginal gap mean value (60 ±10 µm) than PEEK CAD (69 ± 0.00µm) and PEEK press group (69 ± 10µm). Among internal fit There was no statistical significant difference between the three groups as p =0.36 (> 0.05) but PEEK press showed better internal fit. (126±30 µm), (130±40 µm) and (112±40 µm) for zirconia, PEEK CAD and PEEK press respectively.
Conclusion: Marginal and internal fit for the three groups were within the acceptance range while zirconia copings show significance superior marginal fit than PEEK groups.
Keywords
Three-dimensional analysis; Marginal fit; internal fit; PEEK; Zirconia
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