Original Article

IJMDC. 2021; 5(3): 808-813

Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas

Authors: Bader S. Alghamdi, Abdulrahman O. Alahmadi, Fahad M. Alamri, Mohamed F. Elmoafy, Salah A. Yousief, Abdulaziz A. Samran.

ABSTRACT

Background: Connectors of zirconia fixed dental prostheses (FDPs) play an important role in the fracture resistance of prostheses. The current study aimed to investigate the influence of connector dimensions on the fracture resistance of zirconia FDPs when cemented with two different types of cement. Methodos: Sixty resin casts were divided into two main groups according to the length span of the zirconia FDPs: 3-unit (3U) and 4-unit (4U) FDPs. Each group was divided into three subgroups according to the connector surface area as follows: Subgroup U9 with surface area of 9 mm2 of each connector, Subgroup U12 with a surface area of 12 mm2 each connector, and Subgroup U16 with a surface area of 16 mm2 of each connector was 16 mm2. Each subgroup was divided into two subgroups according to the type of cement. Specimens were loaded in a universal testing machine, and data were statistically analyzed using 3-way analysis of variance (α = 0.05). Results: The results showed that mean fracture resistance was significantly increased by increasing connector surface area (p < 0.001). The 3-unit fixed dental prostheses (FPDs) gave higher statistically significant fracture load values than 4-unit FPDs (p < 0.001). However, the cement type had no influence on the fracture resistance of zirconia FDPs. Conclusion: The fracture strength of the zirconia FDPs was affected by the connector dimension. The 3-unit connector design was able to withstand occlusal forces more than the 4-unit connector design. Also, the 3-connector design with a cross-section of 16 mm2 was more able to withstand occlusal forces than those with the dimensions of 12 and 9 mm2.

Keywords:
Fixed dental prostheses, fracture strength, CAD/CAM, connector, resin cement, zinc phosphate cement


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Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas


Authors
Bader S Alghamdi
Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
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Abdulrahman O Alahmadi
Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
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Fahad M Alamri
Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
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Mohamed F Elmoafy
Fixed Prosthodontics Division, Oral and Maxillofacial Department, Umm Al-Qura University, Makkah, Saudi Arabia, Department of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Giza, Egypt
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Salah A Yousief
Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia, Crown and Bridge Department, Faculty of Dental Medicine, Al Azhar University, Assiut Branch, Egypt
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Abdulaziz A Samran
Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al-Uloom University, Riyadh, Saudi Arabia, Department of Prosthodontics, College of Dentistry, Ibb University, Ibb, Yemen.
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Correspondence to:
. Bader S. Alghamdi, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia.; dr.bader07@yahoo.com

Publication history
Received 15 Dec 2020
Accepted 16 Jan 2021
Published online 16 Jan 2021
Published in print 04 Mar 2021

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Pubmed Style

Alghamdi BS, Alahmadi AO, Alamri FM, Elmoafy MF, Yousief SA, Samran AA. Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. IJMDC. 2021; 5(3): 808-813. doi:10.24911/IJMDC.51-1608045956


Web Style

Alghamdi BS, Alahmadi AO, Alamri FM, Elmoafy MF, Yousief SA, Samran AA. Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. http://www.ijmdc.com/?mno=30873 [Access: April 22, 2021]. doi:10.24911/IJMDC.51-1608045956


AMA (American Medical Association) Style

Alghamdi BS, Alahmadi AO, Alamri FM, Elmoafy MF, Yousief SA, Samran AA. Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. IJMDC. 2021; 5(3): 808-813. doi:10.24911/IJMDC.51-1608045956


Vancouver/ICMJE Style

Alghamdi BS, Alahmadi AO, Alamri FM, Elmoafy MF, Yousief SA, Samran AA. Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. IJMDC. (2021), [cited April 22, 2021]; 5(3): 808-813. doi:10.24911/IJMDC.51-1608045956


Harvard Style

Alghamdi, B. S., Alahmadi, . A. O., Alamri, . F. M., Elmoafy, . M. F., Yousief, . S. A. & Samran, . A. A. (2021) Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. IJMDC, 5 (3), 808-813. doi:10.24911/IJMDC.51-1608045956


Turabian Style

Alghamdi, Bader S., Abdulrahman O. Alahmadi, Fahad M. Alamri, Mohamed F. Elmoafy, Salah A. Yousief, and Abdulaziz A. Samran. 2021. Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. International Journal of Medicine in Developing Countries, 5 (3), 808-813. doi:10.24911/IJMDC.51-1608045956


Chicago Style

Alghamdi, Bader S., Abdulrahman O. Alahmadi, Fahad M. Alamri, Mohamed F. Elmoafy, Salah A. Yousief, and Abdulaziz A. Samran. "Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas." International Journal of Medicine in Developing Countries 5 (2021), 808-813. doi:10.24911/IJMDC.51-1608045956


MLA (The Modern Language Association) Style

Alghamdi, Bader S., Abdulrahman O. Alahmadi, Fahad M. Alamri, Mohamed F. Elmoafy, Salah A. Yousief, and Abdulaziz A. Samran. "Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas." International Journal of Medicine in Developing Countries 5.3 (2021), 808-813. Print. doi:10.24911/IJMDC.51-1608045956


APA (American Psychological Association) Style

Alghamdi, B. S., Alahmadi, . A. O., Alamri, . F. M., Elmoafy, . M. F., Yousief, . S. A. & Samran, . A. A. (2021) Fracture strength of computer-aided design and computer-aided manufacturing zirconia fixed dental prostheses with different connector surface areas. International Journal of Medicine in Developing Countries, 5 (3), 808-813. doi:10.24911/IJMDC.51-1608045956


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