Evaluation of different fibers and biodentine as alternates to crown coverage for endodontically treated molars: An in vitro study

Abstract

Objective: This study aims to assess the fracture resistance of more recent restorative materials that 
may be used as a crown coverage substitute.
Materials and Methods:
Forty extracted human mandibular molar teeth were selected for this study and were divided into four 
groups (n = 10). All the teeth in the experimental groups (Group 2–4) were subjected to access cavity 
preparation with roughly 1.5 mm of tooth structure remaining throughout the circumference. 
Group 1: Intact teeth used as control. 
Group 2: Access cavities reinforced with biodentine. 
Group 3: Inner circumference of access cavities reinforced with Glass fiber and nano-hybrid composite. 
Group 4: Access cavities were reinforced with fiber reinforced composite. All the teeth were subjected 
to fracture resistance using universal testing machine