Comparative Stress Evaluation Of Poly Ether Ether Ketone (Peek), Composite And Fibre Posts In Primary Teeth - 3d Finite Element Analysis

Abstract

Aim and Background: Posts has evolved from Metallic to Fibre posts in Pediatric dentistry. Poly Ether Ether Ketone (PEEK), the newest dental inventory. Therefore, to compare the efficacy of PEEK with Composite and Glass Fibre post as material for post and core in Primary Maxillary Central and Lateral Incisor: A Finite Element Analysis (FEA) was performed.

Methodology: Upon Ethical clearance from the Institutional Ethical Committee (2021/223), FEA was done on Six 3D models with three post materials i.e., PEEK, Composite and Glass Fiber in Maxillary Central and Lateral Incisors. Force of 180 N was applied at angulations 0°, 45°and 90°. Stress Concentration was analyzed using “ANSYS version 18.1” in the form of Von Misses stress values. ANNOVA test for statistical analysis was performed.

Results: Results were non-significant regarding overall stress and stress on luting cement on all models. Stress values on dentin for all the types of Post materials were in a similar range, however, values seen on Central Incisors were higher than those of Lateral Incisors which was statistically significant in Model 2 and Model 4. (P value- 0.047)

Conclusion: There is a non-significant correlation between the types of post used and the overall force dissipated on the tooth model and on luting cement.There are greater chances of fracture in Lateral Incisors when compared to Central Incisors which was statistically significant in our study.

Clinical Relevance: This study has created a base for the Novel use of the existing material PEEK in pediatric dentistry for Posttechniques