Volume 24, Issue 105, September - October, 2020

Microhardness of early enamel lesions in deciduous teeth treated with an infiltrant resin, a fluoride varnish and GC tooth mousse

Leila Basir¹, Razieh Meshki², Nadereh Rahbar³, Targol Amini^4♦

¹Associate professor, department of Pediatric Dentistry, School of dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
²Associate Professor, Department of Pediatric Dentistry, School of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
³Nanotechnology Research Center, Ahvaz, Jundishapur University of Medical Sciences, Ahvaz, Iran
⁴Pediatric dentistry Resident, Pediatric Department, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

^♦Corresponding author
Pediatric dentistry Resident, Pediatric Department, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

ABSTRACT

Background and Aim: Early enamel caries in primary dentition are highly prevalent and conservative treatments are needed at this stage. Considering the structural differences between primary and permanent teeth, this study aimed to compare the microhardness of early enamel lesions of deciduous teeth, treated with an infiltrant resin, a fluoride varnish and GC Tooth Mousse. Materials and Methods: Thirty six intact primary canines were included in the present in-vitro study. They were immersed in a demineralizing solution and incubated at 37º C for 4 days. The samples were randomly assigned into three study groups (rein infiltrate (group 1), GC Tooth Mousse (group 2) and fluoride varnish (group 3); 12 samples within each) and differently treated. Microhardness was evaluated before and after the remineralization process and after treatments for each specimen using a Vickers hardness testing machine. Data analysis was performed using paired T test on SPSS v22 software. Results: In group 2, the microhardness coefficient was increased significantly (P=0.04) from 133.3 to 155.4 (+22.1 V). The microhardness coefficient for group 1 was increased, but not significantly, (P=0.2) from 139.7 to 152.4. In group 3, the microhardness coefficient was significantly (P= 0.001) increased from 138.6 to 178.3 (+39.7 V). Conclusion: The resin infiltrate enhanced the surface microhardness, but not significantly. The fluoride varnish and the tooth mousse both increase the surface microhardness of enamel by improving the remineralization process.

Keywords: Anxiety, Medical students, Shared symptoms

Medical Science, 2020, 24(105), 2852-2860

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