Assessment of fracture force of CAD-CAM-fabricated overlay restorations using deep marginal elevation technique.

Mohamed, Mohamed Saleh; Mohsen, Cherif Adel; Amgad, Shams Waaz

doi:10.21608/jmr.2019.17940.1009

Assessment of fracture force of CAD-CAM-fabricated overlay restorations using deep marginal elevation technique.

Document Type : Original Article

Authors

Department of Fixed Prosthodontics, Faculty of Dentistry, Minia University, 61519 Minia, Egypt

10.21608/jmr.2019.17940.1009

Abstract

ABSTRACT

Purpose

To evaluate the fracture force of CAD-CAM-fabricated overlay restorations (Feld spathic cerec

blocks) and hybrid ceramic material (VITA Enamic) using deep marginal elevation technique

(DME).

Materials and methods

Twenty overlay restorations were constructed in this study. The samples were divided into two

main groups according to the ceramic material (n=10). The type of ceramics that was used is

(feld spathic for group I and vita enamic for group II). a ceramic material which was used (10

samples each):- The first group : feld spathic cerec blocks cemented by RelyX Ultimate Clicker

resin cement. The second group: VITA ENAMIC hybrid ceramic overlays cemented by RelyX

Ultimate Clicker resin cement. Each main group was subdivided into two subgroups for each

type of the ceramic material according to the fracture force (n=5), One of them without deep

marginal elevation and the other with a deep marginal elevation (DME) till the cemento-enamel

junction (CEJ).

Results

Between the two materials There was a significant difference between the feld spathic and vita

enamic materials in with and without deep marginal elevation technique .

Conclusion

VITA Enamic material has higher fracture force than feld spathic material in samples with deep

marginal elevation. Feld spathic material has higher fracture force than vita enamic material in

samples without (DME).

Keywords

Main Subjects