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Published on: March 7, 2014
Biomechanical evaluation of horizontal intracoronal reinforcement strategies in endodontically treated teeth: An in
Rosary S Joselin1, Aruna Kumari Veronica1, Anand V Susila1
1Department of Conservative Dentistry and Endodontics, Madha Dental College and Hospital, Chennai, Tamil Nadu, India.
Context:
Comparison of reinforcement strategies for root-filled teeth.
Aim:
Comparative evaluation of four conservative intracoronal reinforcement techniques on the fracture resistance and compressive stress of root canal-treated premolars.
Settings And Design:
Recently extracted human upper premolars were randomly divided into five groups (n = 10): intact teeth (control), horizontal fiber-reinforced composite (FRC) post, horizontal dentin post, polyethylene fiber reinforcement (Ribbond), and pre-impregnated glass fiber reinforcement (Interlig). Excluding the control group, mesio-occluso-distal cavities were prepared in the other groups, root canals were treated, reinforcement was performed according to the assigned techniques, and restoration was done with bulk-fill composite resin. Fracture resistance and compressive stress were measured using a universal testing machine after thermocycling.
Statistical Analysis Used:
Fracture resistance and compressive stress were analyzed using one-way analysis of variance (ANOVA) and Tukey's post hoc test (α =0.05).
Results:
Significant differences were found between the groups (P = 0.008). The control and pre-impregnated glass fiber groups showed the highest and similar values of compressive stress. The horizontal FRC post group showed the lowest values, which were significantly inferior (P < 0.05). The horizontal dentin post and polyethylene fiber groups performed better than the horizontal FRC post group.
Conclusions:
Pre-impregnated glass fiber, horizontal dentin post, and polyethylene fiber reinforcement exhibited biomechanical performance equivalent to intact teeth, while horizontal FRC posts demonstrated inferior performance.
