Comparative Evaluation of Shear Bond Strength of Bonded Space Maintainers Using Ormocers, Nanofilled and Glass Fiber-reinforced Adhesive Composites.

Abstract

Space maintainers (SMs) are used to preserve the space created by premature loss of primary teeth. The most commonly used is the band and loop (B&L) SM. As this SM has several drawbacks, such as poor esthetics and gingival health, laboratory procedures for fabrication, and multiple seating procedures, various bonded SMs were introduced. This study aims to compare the shear bond strength of bonded SMs using ormocer, nanofilled, and short glass fiber-reinforced adhesive composites with the conventional B&L SM luted with type I glass ionomer cement (GIC). Sixty intact extracted primary molars were randomly divided into four groups (n = 15). In group I (control), conventional B&L SMs were luted with type I GIC, whereas ormocer, nanofilled, and glass fiber-reinforced composites (GFRC) were used to bond the SMs in groups II, III, and IV, respectively. Shear bond strength of all the specimens was analyzed using a universal testing machine, and the obtained data were subjected to statistical analysis. The highest shear bond strength, that is, 68.82 ± 16.81 MPa, was exhibited by GFRC, followed by 51.04 ± 23.28 MPa with nanofilled composite, 45.3 ± 18.27 MPa with ormocer, and the least in the control group, that is, 42.17 ± 17 MPa. Glass fiber-reinforced resin composite has better resistance against shear force than the other three study materials, and this was significantly higher (p = 0.001) than conventional B&L SMs. Barathi D, Jampanapalli SR, Patloth T, et al. Comparative Evaluation of Shear Bond Strength of Bonded Space Maintainers Using Ormocers, Nanofilled and Glass Fiber-reinforced Adhesive Composites. Int J Clin Pediatr Dent 2024;17(6):695-701.