Energy Dispersive (Edx) Analysis of Structural Changes on Human Dental Enamel Trated with Co2 (10.60nm) and Diode (980nm) Lasers

Abstract

Objective: This in-vitro study was to investigate enamel surface compositional changes using CO₂ (10.600nm) and infrared diode laser (980nm) and their ability to increase its resistance to demineralization. Methods: Seventy premolar teeth, extracted for orthodontic reasons. The samples were randomly divided into three groups. group 1control ten samples group group 2  C0₂ laser, group 3 diode laser group thirty samples for each was divided into three  sub group according to parameter 2,4,   6 watt for one minute   after irradiation the samples were immersed in acetate buffer (ph 4.5) and incubated at 37^OC for 24 hours and then acid resistance were evaluated by determining calcium ion concentration by energy dispersive x-ray spectroscopy (EDX). Data were collected, tabulated and analyzed. The results showing 2w: There was no statistically significant difference between (Co₂) and (Diode) where (p=0.139). The highest mean value was found in (Diode) while the least mean value was found in (Co2).4w: There was no statistically significant difference between (Co2) and (Diode) where (p=0.432). The highest mean value was found in (Diode) while the least mean value was found in (Co2) 6w: There was a statistically significant difference between (Co2) and (Diode) where (p=0.011). The highest mean value was found in (Diode) while the least mean value was found in (Co2). The study concluded: Laser application is a promising technique for tissue remineralization and to increase the enamel resistance against the bacterial acid attack.