Baba Farid University Dental Journal

  • Year: 2021
  • Volume: 11
  • Issue: 2

Comparison of fracture resistance of glass-ceramic overlays with different bonding systems

1Professor, Department of Prosthodontics, Yamuna Institute of Dental Sciences and Research, Gadholi, Haryana, India (ORCID ID: 0000-0001-7844-2210)

2PG, Department of Prothodontics, Kothiwal Dental College and Research Institute, Moradabad, Uttar Pradesh, India (ORCID ID:xxxxxx)

*Corresponding Author: Dr. Himani Priya Java, Professor, Department of Prosthodontics, Yamuna Institute of Dental Sciences and Research, Gadholi, Haryana, India (ORCID ID: 0000-0001-7844-2210)

Online published on 12 April, 2022.

Abstract

The overlay is an indirect dental restoration, which can be considered as "the successor to the peripheral crown." It can be made of ceramic or resin composite. The present study compared fracture resistance of glass-ceramic overlays with different bonding systems.

45 mandibular third molars were randomly allocated into 3 groups. Group I overlays bonded to tooth structure using Panavia V5 with immediate dentin sealing (IDS). Group II overlays bonded using Panavia V5 without IDS; and group III overlays bonded using heated composite combined with a bonding agent with IDS. Shear forces were applied using a universal testing machine. Type of fracture was recorded.

Shear bond strength in group I was 15.4 MPa, in group II was 12.3 MPA and in group III was 8.7 MPa. Type 1 fracture was seen in 12 in group I and II and 13 in group III. Type 2 in 2 in group II and 1 in group III, type 3 in 2 in group I and 1 each in group II and III, type 3 in 2 in group I and 1 in group II and group III and type 4 in 1 in group I. The difference was nonsignificant (P> 0.05).

Bonding using Panavia V5 with IDS exhibited better resistance to shear forces when compared to other bonding techniques.

Keywords

Panavia V5, Bonding agent, Overlay