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Penmetsa GS, B V, Bhupathi AP, Rani P S, B V S, M V R.Penmetsa GS, et al.Contemp Clin Dent. 2019 Apr-Jun;10(2):333-337. doi: 10.4103/ccd.ccd_583_18.Contemp Clin Dent. 2019.PMID: 32308299Free PMC article.