Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture
wafa Hasan, A., Bahnassawi, H., Baraka, Y. (2022). Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture. EKB Journal Management System, 25(2), 119-125. doi: 10.21608/ajdsm.2020.52395.1142
Abdelrahman Adel Hasan wafa Hasan; Hafez Ibrahim Bahnassawi; Yasser Abd‏ ‏Elghaney Baraka. "Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture". EKB Journal Management System, 25, 2, 2022, 119-125. doi: 10.21608/ajdsm.2020.52395.1142
wafa Hasan, A., Bahnassawi, H., Baraka, Y. (2022). 'Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture', EKB Journal Management System, 25(2), pp. 119-125. doi: 10.21608/ajdsm.2020.52395.1142
wafa Hasan, A., Bahnassawi, H., Baraka, Y. Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture. EKB Journal Management System, 2022; 25(2): 119-125. doi: 10.21608/ajdsm.2020.52395.1142

Photoelastic Stress Analysis for Cobalt Chromium and Nylon Denture ‎Base on Mandibular Kennedy Class I Implant Supported Removable ‎Partial Overdenture

Al-Azhar Journal of Dental Science
Article 1, Volume 25, Issue 2, April 2022, Page 119-125  XML PDF (843.38 K)
Document Type: Original Article
DOI: 10.21608/ajdsm.2020.52395.1142
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Authors
Abdelrahman Adel Hasan wafa Hasan email orcid 1; Hafez Ibrahim Bahnassawi2; Yasser Abd‏ ‏Elghaney Baraka3
1Department of Removable Prosthodontics, Faculty of dentistry, Sinai university, El Arish city, North Sinai, Egypt
2Removable Prosthodontics department Faculty of Dental Medicine, Boys, Al-Azhar University, Cairo, Egypt
3Removable Prosthodontics department, Faculty of Dentistry, Sinai University, sinai, Egypt
Abstract
Objective: the object of this study was to evaluate stresses induced on implant supported ‎cobalt chromium and nylon overdenture bases in free end saddles cases using photoelastic ‎stress analysis. Materials and Methods: Ready-made mandibular stone cast fabricated ‎according to Kennedy Class I with missed 2nd premolar, 1st and 2nd molars. Implant analogue ‎was inserted at site of first molar by using milling machine. Closed tray silicone impression ‎was taken to the stone cast after transfer coping insertion. The transfer coping was inserted on ‎its place in the impression. The implant was placed on its position in the impression. The ‎impression was poured by epoxy resin material and left 24 hour for complete setting. Metallic ‎denture base and nylon denture base was constructed in same design. Forces of 20N, 40N, ‎‎60N, 80N, 100N were applied to detect photoelastic stresses. Results: at application of loads ‎‎(80N and 100N) the nylon framework recorded higher stress values than that of vitalium ‎framework at apical, middle and cervical area for left and right sides. Conclusion: Cobalt ‎chromium denture base showed better stresses distribution in comparison to nylon denture ‎base.‎
Keywords
Cobalt chromium; stress distribution; nylon overdenture base; flexible denture; Photoelstic ‎analysis.‎
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