Year : 2022

Volume : Volume 13

Issue : Issue 1

Address for correspondence :
: Mounika Veeraiyan
veeraiyanmounika25@gmail.com

Abstract

Aim: The aim of the study was to evaluate the effect of different hydrating solutions and immersion time periods on bond strength of reattached fragment to the tooth. Materials and Methods: Sixty human extracted maxillary central incisors with similar dimensions and free of any structural deformities were selected and fractured 5 mm from the incisal edge and divided into six groups: (n = 10): I — Whole milk: For 1 h (IA) or 24 h (IB); II — skimmed milk: For 1 h (IIA) or 24 h (IIB); III — powdered milk: For 1 h (IIIA) or 24 h (IIIB); IV — honey milk: For 1 h (IVA) or 24 h (IVB); V — normal saline: For 1 h (VA) or 24 h (VB); and VI — control group (dry tooth): For 1 h (VIA) or 24 h (VIB). Tooth fragments were then re-attached using self-etching technique with nanohybrid composite resin remained the same in all groups. Fracture resistance was evaluated in a universal testing machine under a compressive load (1 mm/min). Statistical analysis: The data were submitted to one-way ANOVA, the post hoc Tukey test and sub group comparison by independent sample t-test. Results: The highest fracture resistance value was demonstrated by Group I (whole milk) showed statistically significant difference (2671.60 ± 530.24) compared with honey milk Group III (1990.80 ± 518.95), powdered milk Group IV (1872.30 ± 301.03), skimmed milk Group II (1631.00 ± 554.95), normal saline Group V (1551.60 ± 455.65), and least fracture resistance values were observed in dry tooth Group VI (1267.90 ± 309.13). For sub group comparison, Independent t-test was applied and no significant difference between 1 and 24 h duration, except there was a statistically significant difference in fracture resistance values between Group IIA and Group IIB (P = 0.041 P <0.05), and Group IIIA and Group IIIB (P = 0.016 P <0.05).

Keywords: Activated acrylic resin, Self etching, Nanohybrid composite