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:: Volume 31, Issue 3 (Summer 2013) ::
J Dent Sch GYEAR__, 31(3): 138-147 Back to browse issues page
The Effect of Silicone Oil and Nano-hydroxyapatite/Chitosan Powder on Microhardness and Surface Structure of Primary Teeth Enamel After Iron Drop Consumption
Mitra Tabari Dr., Homayoun Alaghemand Dr., Mahmoud Rabiee Dr., Sorayya Khefri Dr., Massoud Seyyed Ahadi Corresponding Author: Dr. *, Mohammad-Reza Nikpour
Assistant Professor Dept. of Pediatric Dentistry , masud_us2002@yahoo.com
Abstract:   (2768 Views)

  Objective: Oral iron drops are recommended for children aged 6-24 months to prevent iron-deficiency anemia. However, their use is associated with the potential risk of erosion and microhardness reduction of primary teeth enamel due to their high acidity. It seems that the combination of silicone oil, nano-hydroxyapatite and chitosan powder may be able to improve the microhardness and surface structure of primary teeth enamel. This study sought to assess the effect of silicone oil plus nano-hydroxyapatite/chitosan on the changed microhardness and surface structure of primary teeth enamel after exposure to iron drop.

  Methods: In this in-vitro study, 30 anterior deciduous teeth were collected and randomly divided into 3 groups. In the first group, samples were exposed to iron drop for 5min and then treated with nano-hydroxyapatite/chitosan and silicone oil for 10min. In the second group, specimens were first treated with the mentioned compound and then exposed to iron drop. Microhardness changes were compared in each group using Wilcoxon one sample or Sign test and between the two groups using Mann Whitney U test. The third group specimens were observed with a scanning electron microscope (SEM) to assess their surface texture and quality.

  Results: In the first group, iron drop exposure decreased enamel microhardness by 44% of the baseline value (P<0.001). Application of the understudy compound after iron drop exposure significantly increased enamel microhardness by 3% of the baseline value (P=0.006). Use of the mentioned compound before iron drop exposure significantly increased enamel microhardness by 2% of the baseline value (P=0.023). No statistically significant difference was found between the two groups (P=0.74).

  Conclusion: Iron drop exposure significantly decreased enamel microhardness. Use of silicone oil and nano-hydroxyapatite/chitosan powder caused 3% and 2% increase in enamel microhardness in the first and 2nd group, respectively. These values, compared to the effect of iron drop exposure are clinically significant.

Keywords: Silicone oil, Nano-hydroxyapatite/chitosan, Dental erosion, Microhardness, Primary teeth enamel, Iron drop
Full-Text [PDF 330 kb]   (1154 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2013/10/13 | Accepted: 2013/10/26 | Published: 2013/10/26
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Tabari M, Alaghemand H, Rabiee M, Khefri S, Seyyed Ahadi M, Nikpour M. The Effect of Silicone Oil and Nano-hydroxyapatite/Chitosan Powder on Microhardness and Surface Structure of Primary Teeth Enamel After Iron Drop Consumption. J Dent Sch. 2013; 31 (3) :138-147
URL: http://jds.sbmu.ac.ir/article-1-1164-en.html
Volume 31, Issue 3 (Summer 2013) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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