Mechanical performance of a newly developed glass hybrid restorative in the restoration of large MO Class 2 cavities


Kutuk Z. B. , Ozturk C., Cakir F., Gurgan S.

NIGERIAN JOURNAL OF CLINICAL PRACTICE, vol.22, no.6, pp.833-841, 2019 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 6
  • Publication Date: 2019
  • Doi Number: 10.4103/njcp.njcp_628_18
  • Journal Name: NIGERIAN JOURNAL OF CLINICAL PRACTICE
  • Journal Indexes: Science Citation Index Expanded
  • Page Numbers: pp.833-841
  • Keywords: Composite resin, compressive strength, fracture resistance, glass hybrid, RANDOMIZED CLINICAL-TRIAL, FRACTURE-RESISTANCE, COMPOSITE RESTORATIONS, RESIN RESTORATIONS, IONOMER MATERIALS, POSTERIOR TEETH, STRENGTH, INTEGRITY, SURVIVAL, FAILURE

Abstract

Objective: To evaluate the mechanical properties of a glass hybrid (GH) restorative system (EQUIA Forte/GC) and compare it with a microhybrid composite (G-aenial Posterior/GC) by compressive strength (CS) and fracture resistance (FR) tests. Materials and Methods: Cylindrical specimens were subjected to a CS test (n = 12). There were about 48 mandibular molars were used for a FR test and divided into four groups: Group 1 (positive control), sound teeth; Group 2 (negative control), extended size Class 2 cavities prepared on the mesial surfaces of teeth; Group 3, extended size Class 2 cavities restored with a composite; and Group 4, extended size Class 2 cavities restored with GH. Specimens were subjected to loading until a fracture occurred. Data were analyzed statistically (a = 0.05). Results: The fracture modes were examined by scanning electron microscope (SEM). The CS values of the composite and GH were 278.20 17.34 MPa and 164.62 25.72 MPa, respectively (P < 0.05). No differences were observed between the FR of restored groups (P 0.05). Conclusions: The GH exhibited sufficient mechanical properties as a restorative material, and could be preferred for extensive caries lesions on posterior teeth.