Resistance to Fracture of Lower Premolars with Abrasion and Abfraction Lesions

Authors : Dr. Athira Ramesh; Dr. Rajesh Pillai; Dr. Afzal A; Dr. Sheila George

Volume/Issue : Volume 8 - 2023, Issue 9 - September

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Aim: To compare the resistance to fracture of root canal treated mandibular premolars with abrasion and abfraction (non -carious cervical) lesions involving the pulp, restored with different post systems.Materials And Methods: Human mandibular premolars (n=20) with single root canal were divided randomly into four groups (n=5). Wedge-shaped lesions (NCCLs) were created in all teeth specimens on the buccal cervical area. After root canal treatment, the teeth were grouped into (i) NCCLs + prefabricated glass fibre-reinforced composite post + composite resin core (NCCL+PGFRC+CRC); (ii) NCCLs + prefabricated stainless steel post + composite resin core (NCCL+ PSSP+CRC) (iii)NCCLs + custom polyethylene fibre posts + composite resin core (NCCL+CRFP+CRC); (iv) NCCLs + composite resin core (NCCL+CRC). Axial compressive force was given to the occlusal surface with a universal testing machine until fracture. The crosshead speed was 0.5 mm/min. Pairwise comparisons of the load-to-fracture among the groups were analysed.Results: Resistance to fracture was higher for NCCL+ PSSP+CRC than the other three groups, while NCCL+CRC showed the least value.Conclusion: NCCL filled with prefabricated stainless steel post and composite resin core showed greater ability to withstand compressive load than the other groups.

Keywords : Non Carious- Cervical Lesion, Prefabricated Glass Fibre-Reinforced Composite Post, Prefabricated Stainless Steel Post, Custom Polyethylene Fibre Posts.


Paper Submission Last Date
31 - December - 2023

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