Evaluation and Comparison of Changes in Microhardness of Primary and Permanent Enamel on Exposure to Acidic Center-filled Chewing Gum: An in vitro Study.

Radhika Muppa,Duddu Mahesh Kumar,Nch Srinivas,Vijaya Lakshmi Mudumba

doi:10.5005/jp-journals-10005-1228

Abstract

ABSTRACTObjectives: The study is to evaluate changes in microhardness of enamel after exposure to acidic center filled chewing gum on primary and permanent teeth.Methods: Thirty primary and 30 permanent molar extracted teeth were painted with acid resistant varnish except a small window over buccal surface. Teeth were divided into four groups according to type of teeth and type of chewing gum (Center fresh and Bubbaloo) (D1, P1, D2 and P2); each tooth was exposed to whole chewing gum mashed with 5 ml of artificial saliva for five minutes at room temperature twice a day for 5 days. After the exposure, teeth were stored in deionized water and submitted for microhardness tests.Results: Paired t-test and independent sample t-test were used for statistical analysis. A significant reduction in microhardness was found between exposed and unexposed areas in all groups. There was no statistically significant difference in reduction of microhardness to chewing gums, and between primary and permanent enamel.Conclusion: There is a definite reduction in microhardness in all groups exposed to chewing gums. Both the chewing gums are equally erosive; both permanent and primary teeth were affected.How to cite this article: Mudumba VL, Muppa R, Srinivas NCH, Kumar DM. Evaluation and Comparison of Changes in Microhardness of Primary and Permanent Enamel on Exposure to Acidic Center-filled Chewing Gum: An in vitro Study. Int J Clin Pediatr Dent 2014;7(1):24-29.

Highlights

Prevalence of dental caries in most developed countries has declined with an increase in prevalence of other dental2-4Department of Pedodontics, Panineeya Dental College Hyderabad, Andhra Pradesh, IndiaThe dental erosion has become a major dental problem in both children and adults
Groups are divided according to type of dentition (D — for Primary, P – permanent), chewing gum (1 — for Center fresh, 2 — for Bubbaloo)
The evaluation and comparison of effect of decrease in microhardness values of enamel between Center Fresh and Bubbaloo chewing gums, we found no statistically significant difference between primary and permanent enamel

Summary

Introduction

Prevalence of dental caries in most developed countries has declined with an increase in prevalence of other dental2-4Department of Pedodontics, Panineeya Dental College Hyderabad, Andhra Pradesh, IndiaThe dental erosion has become a major dental problem in both children and adults. Among the extrinsic factors is excessive consumption of acidic food stuffs as well as professional exposure to acidic environments where as chronic gastro intestinal disorders, anorexia and bulimia nervosa with frequent vomiting are considered the most frequent intrinsic reasons.[4] pH of a dietary substance alone is not predictive of its potential as other factors modify the erosive process These factors are chemical (pKa values, adhesion and chelating properties, Calcium, phosphate and fluoride content) behavioral (eating and drinking habits, life style, excessive consumption of acids) and biological (flow rate, buffering capacity, composition of saliva, pellicle formation, tooth composition, dental and soft tissue anatomy).[5]

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