Evaluation of hybrid layer thickness and resin tag length of self-etch adhesives with different ph using confocal laser scanning microscope: an in vitro study

Author(s): Anoop Samuel*, Rajesh Gopal V.

Abstract

The aim of this in vitro study is to evaluate the hybrid layer thickness and resin tag length of self-etches adhesives with different pH using Confocal Laser Scanning Microscope (CLSM). Total 40 teeth was prepared and divided into four groups. Group-I (Prime and Bond NT), group-II: (Xeno III), group-III: (Xeno V) and group-IV: (Xeno IV). Each group contains 10 teeth. The samples were mounted on Borosilicate cover glass with cover slip. The excitation laser light was generated with a wavelength 514nm. The image was recorded in fluorescent mode and hybrid layer and resin tag length were visualized as green. They were analyzed, and thickness of hybrid layer and length of resin tag were measured by means of Image Browser software (zeiss, Germany) in micrometers. Results were tabulated and mean obtained. Group-I (Prime and Bond NT) showed the maximum values for hybrid layer thickness & resin tag length compared to group-II (Xeno III), group-III (Xeno V) and group-IV (Xeno IV). Among the self-etching primer group-II (Xeno III) with strong pH (<1) gave higher values for hybrid layer thickness and resin tag length. Among the self-etching adhesives, strong self-etch adhesive showed the maximum hybrid layer thickness and resin tag length. Further studies with more parameters must be conducted to evaluate the resin-dentin interface.

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