In vitro study comparing the fracture resistance strength between two pediatric dental crowns: Bioflex and Zirconia crowns from Nu Smile.

Description :

The strength of materials is an indispensable parameter that dictates their suitability for certain tasks under different types of load and environmental conditions which significantly impact performance, safety and durability. Bioflex crowns are constructed from high impact, biocompatible hybrid resin polymer which has great strength, flexibility and durability while zirconia crowns are made from zirconium dioxide which is a white powdered ceramic. The objective in this study is to compare the fracture resistance between these two materials. Preparation of the specimen and sample consists of having a proper sample size which is n=30 divided to two equal groups, fifteen Bioflex crowns and fifteen zirconia crowns and performing an in vitro study that consists of comparing the fracture resistance of both materials using the same machine (YLE) with proper observation of results. The thickness of Bioflex crowns is 1 mm and thickness of zirconia crowns is 1.1 mm. The choice of conducting this study on dentoform rather than natural teeth stems from practical considerations essential to the research methodology. Dentoform teeth were selected primarily due to the availability of standardized crowns of a specific size. (NuSmile sent crowns of the same size E4 which would fit dentoform teeth after careful preparation following proper guidelines and reproducibility will be obtained by digital scanning of one preparation to accurately reproduce the sample needed) This standardization ensures reproducibility in my preparations. By utilizing dentoform teeth, the control over variables can be maintained, facilitating a more reliable analysis.