Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials
Elbanna, K., Alqutub, A., Kotb Salem, S. (2022). Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials. EKB Journal Management System, 68(1), 749-761. doi: 10.21608/edj.2021.100254.1824
Khaled Elbanna; Alaa Alqutub; Shereen Kotb Salem. "Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials". EKB Journal Management System, 68, 1, 2022, 749-761. doi: 10.21608/edj.2021.100254.1824
Elbanna, K., Alqutub, A., Kotb Salem, S. (2022). 'Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials', EKB Journal Management System, 68(1), pp. 749-761. doi: 10.21608/edj.2021.100254.1824
Elbanna, K., Alqutub, A., Kotb Salem, S. Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials. EKB Journal Management System, 2022; 68(1): 749-761. doi: 10.21608/edj.2021.100254.1824

Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials

Egyptian Dental Journal
Article 17, Volume 68, Issue 1 - Serial Number 4, January 2022, Page 749-761  XML PDF (1.89 MB)
Document Type: Original Article
DOI: 10.21608/edj.2021.100254.1824
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Authors
Khaled Elbanna email 1; Alaa Alqutuborcid 2; Shereen Kotb Salemorcid 3
1Fixed Prosthodontics Division, Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Umm Al-Qura University, KSA.
2Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Umm Al-Qura University, KSA.
3Fixed Prosthodontics, Faculty of Dentistry, October 6 University, Giza, Egypt
Abstract
Objective: The aim of this study was to evaluate the internal fit of hybrid and internal hex connections using different materials. Materials&Methods: Forty abutments were divided into 2 groups according to connection type. Each group was subdivided into 4 subgroups according to material (Zr, Ti, Co-Cr and soft-milled Co-Cr-Mo). Internal fit was measured using replica technique. Results: All the samples had clinically acceptable gap values ≤150 µm where internal hex connection had narrower gap than conical connection. Zirconia was the material with lowest gap values, followed by titanium and soft-milled Co-Cr-Mo. Co-Cr had the largest gap distance. Conclusions: 1: Internal hex connection has better internal fit than hybrid connection with more consistent results among different materials. 2: Zirconia showed the best overall internal adaptation with consistent performance among the two connections used. 3: Low marginal gap distance of CAD/CAM conical abutments may not necessarily indicate proper seating of the abutments.
Keywords
Hybrid connections; Internal connections; CAD/CAM abutments; soft-milled Co-Cr-Mo; Zirconia
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