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Effect of Nanohydroxyapatite Incorporation in Hydrogen Peroxide Bleaching Agent on Minerals Content of Dental Enamel | ||
| Tikrit Journal for Dental Sciences | ||
| Volume 13, Issue 1, June 2025, Pages 27-37 PDF (573.15 K) | ||
| DOI: 10.25130/tjds.13.1.4 | ||
| Authors | ||
| Asraa Sabah Abtan* ; Nibal Mohammed Hoobi | ||
| Department of Pediatric and Preventive Dentistry, College of Dentistry, University of Baghdad, Iraq. | ||
| Abstract | ||
| Background: Current study was assessed to evaluate the effect of nanoydroxyapatite (nHAp) incorporation in hydrogen peroxide (HP) bleaching agent on selected minerals content of dental enamel. Material and Methods: 30 sound upper first premolar teeth were used in this study. Enamel blocks (7mm× 5mm×3mm) were obtained from the middle third of buccal surfaces of the teeth. Each dental block was embedded in self-cure acrylic resin with exposed exterior enamel surface. Enamel samples were divided into three groups (n=10): deionized water (DW) as control group, HP bleached group, and hydrogen peroxide modified by nanohydroxyapatite (HP-nHAp) bleached group. Energy Dispersive X-Ray Spectroscopy (EDS) was used to evaluate the elemental composition changes of each sample before and after treatment. Result: Findings of the current study revealed reduction of each of enamel calcium (Ca) and phosphorous (P) minerals content after treatment compared with baseline data for all groups, with statistically significant difference for HP group only. The percentage of Ca and P weight loss of enamel subjected to HP bleaching was the highest, followed by HP-nHAp treated group, while the control group was the least one with statistically significant difference between each of (HP and HP-nHAp) groups, and (HP and control) groups. No significant reductions were observed after treatment in Ca/P ratio in all groups. Conclusion: Adding of nHAp material to HP bleaching agent could decrease its adverse effects on dental enamel surface. | ||
| Keywords | ||
| Dental bleaching Elemental Analysis Enamel hydrogen peroxide Nanohydroxyapatite | ||
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