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ORIGINAL ARTICLE
Year : 2022  |  Volume : 11  |  Issue : 3  |  Page : 176-180

Evaluation of fracture resistance of maxillary premolars with class II mod cavities restored with fiber-reinforced composite and Cention N — An in vitro study


1 Conservative Dentistry and Endodontics, Consultant Endodontist, Bengaluru, Karnataka, India
2 Conservative Dentistry and Endodontics, KVG Dental College and Hospital, Sullia, Karnataka, India
3 Prosthodontics and Crown and Bridge, Consultant Prosthodontist, Bengaluru, Karnataka, India

Correspondence Address:
Dr. Krishnaveni M Marella
Department of Conservative and Endodontic, KVG Dental College and Hospital, Sullia - 574 327, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jdrntruhs.jdrntruhs_50_21

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Aim: The purpose of this in vitro study is to assess the influence of fiber-reinforced composite (FRC) and Cention N on the fracture resistance of maxillary premolars with class II mesio-occluso-distal (MOD) cavities. Materials and Methods: Forty-five freshly extracted human maxillary premolar teeth were collected and embedded in an acrylic cylinder up to 2.0 mm below the cementoenamel junction (CEJ) using self-cure acrylic resin. MOD cavities were prepared with continuous water cooling using a high-speed handpiece and a diamond bur. Samples were then divided randomly into three experimental groups with 15 teeth each according to the respective composite: Group A: teeth were left intact; Group B: fiber-reinforced composite (FRC); and Group C: Cention N. All groups were stored in water at 37°C for 24 hours and thermocycled 500 times between 5°C and 55°C. All specimens were subjected to compressive axial loading in a universal testing machine using a steel bar which was placed centrally to the occlusal surface and applied in parallel to the long axis of the tooth until fracture occurred. Statistical Analysis: One-way analysis of variance (ANOVA) and Tukey's post hoc test were used to analyze the results. Results: In the present study, Cention N showed significantly high fracture resistance compared to fiber-reinforced composite. Conclusion: Among the test specimens, Cention N showed significantly high fracture resistance.


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