Effect of the radius of curvature of embrasure in connector area on the fracture resistance of three-unit zirconia fixed partial dentures

Tarek R. Abdelrehim; Amr A. Mahrous

Article Details

Effect of the radius of curvature of embrasure in connector area on the fracture resistance of three-unit zirconia fixed partial dentures

Authors:

Tarek R. Abdelrehim | Amr A. Mahrous

Publisher:

AENSI (American-Eurasian Network for Scientific Information)

Journal:

Australian Journal of Basic and Applied Sciences Vol.15 Issue 5, pp.30-34

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2001858102

pISSN:

1991-8178

Abstract:

 BACKGROUND: Most clinical studies indicate that fixed partial denture's (FPDs) have an approximately high failure rate, especially around the connector area between the retainers and pontics. The configuration of the prosthesis components can have a significant impact on the stress distribution as the contour changes. Increase the fracture resistance of three units of FPD by modifying the connector configuration in sections where the stress pattern occurs with extreme stress. OBJECTIVES: This study aimed to evaluate the effect of the curvature radius on the connector embrasure areas on the fracture resistance of three-unit all-ceramic FPDs. it was made from IPS e.max ZirCAD. Methods: A total of 20 all-ceramic three-unit FPDs were fabricated from IPS e.max ZirCAD. They were divided into four groups with different connector's designs. All FPDs were adhesively bonded to the abutment teeth using resin cement. RESULTS: The mean fracture loads were highest for Group A (0.60 mm r OE and r GE). The results showed that a significant difference among fracture loads of different types of connector design. CONCLUSIONS: It can be concluded that change of the radius of curvature of the connector area showed to be critical for the fracture resistance of all-ceramic fixed partial dentures. The fracture resistance can be improved by constructing larger radii of gingival and occlusal embrasure in the connector area. [.

Article Details

Effect of the radius of curvature of embrasure in connector area on the fracture resistance of three-unit zirconia fixed partial dentures

Authors: Tarek R. Abdelrehim | Amr A. Mahrous

Publisher: AENSI (American-Eurasian Network for Scientific Information)

Journal: Australian Journal of Basic and Applied Sciences Vol.15 Issue 5, pp.30-34

Document Type: Article

Publication Date: 1/2021

Document Language: English

Document ID (Org No.): 2001858102

pISSN: 1991-8178

Issues

Authors:

Tarek R. Abdelrehim | Amr A. Mahrous

Publisher:

AENSI (American-Eurasian Network for Scientific Information)

Journal:

Australian Journal of Basic and Applied Sciences Vol.15 Issue 5, pp.30-34

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2001858102

pISSN:

1991-8178