| web | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4232036/pdf/ccide-6-089.pdf |
| author | Prathibha Anand Nayak, Ullal Anand Nayak, and Vishal Khandelwal |
| publication | Clin Cosmet Investig Dent |
| date | 2014-11-10 |
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