Erosive Potential of Industrialized Teas: An in vitro study

Andressa Feitosa Oliveira, Fábio Correia Sampaio, Ingrid Andrade Meira, Marcella Guedes Pereira Gouvêa Bezerra, Nayanna Lana Fernandes, Valeska Maria Paiva


Objective: To evaluate the erosive potential of manufactured teas according to pH, titratable acidity and buffering capacity. Material and Methods: Eight types of manufactured teas of different brands and flavors acquired in supermarkets of João Pessoa, Brazil, were investigated. Indaiá® mineral water and Coca-Cola® were controls. The pH measurement and titratable acidity for pH 5.5 and 7.0 were performed in triplicate in 50 ml of each beverage. The buffering capacity was calculated based on pH and titratable acidity for pH 7.0. ANOVA, Tukey, and Pearson correlation, with p <0.05, were used for data analysis. Results: Data showed normal distribution by Kolmogorov-Smirnov test for all variables. There was a statistically significant relationship between groups analyzed in all variables (ANOVA, p <0.001). The pH of teas ranged from 2.70 (Black Tea with lemon-Leão Fuze®) to 4.03 (Natural Mate Tea - Matte Leão®). The following significant correlations (p <0.01) were observed: pH and titratable acidity; buffering capacity and pH; buffering capacity and titratable acidity. Conclusion: All teas analyzed were potentially erosive; however, Black Tea with lemon (Leão Fuze®) had the lowest pH, the highest titratable acidity and buffering capacity, demonstrating that the saliva will have greater difficulty in buffering this tea in the oral environment.


Tooth Erosion; Beverages; Dental Enamel.

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Lussi A, Megert B, Shellis RP, Wang X. Analysis of the erosive effect of different dietary substances and medications. Br J Nutr 2011; 107(2):252-62. doi: 10.1017/S0007114511002820.

Lussi A, Hellwing E, Ganss C, Jaeggi T. Buonocore Memorial Lecture. Dental erosion. Oper Dent 2009; 34(3):251-62. doi:10.2341/09-BL.

Amoras DR, Corona SAM, Rodrigues ALJ, Serra MC. Effect of beverages on bovine dental enamel subjected to erosive challenge with hydrochloric acid. Braz Dent J 2012; 23(4):367-72. doi: 10.1590/S0103-64402012000400010.

Amaechi BT, Higham SM, Edgar WM. Factors influencing the development of dental erosion in vitro: enamel type, temperature and exposure time. J Oral Rehabil 1999; 26(8):624-30.

Scheutzel P. Etiology of dental erosion--intrinsic factors. Eur J Oral Sci 1996; 104 (2(Pt 2)):178-90.

Buzalaf MAR, Bastos JRM, Granjeiro JM, Levy FM, Cardoso VES, Rodrigues MHC. Fluoride content of several brands of teas and juices found in brazil and risk of dent al fluorosis. Rev Fac Odontol Bauru 2002; 10(4):263-7.

Salas MM, Nascimento GG, Huysmans MC, Demarco FF. Estimated prevalence of erosive tooth wear in permanent teeth of children and adolescents: an epidemiological systematic review and meta-regression analysis. J Dent 2015; 4(1):42-50. doi:10.1016/j.jdent.2014.10.012.

Brasil. Ministério do desenvolvimento, indústria e comércio exterior. Instituto nacional de metrologia, normalização e qualidade industrial. Inmetro. Programa de análise de produtos: Relatório sobre análise em chás. Rio de Janeiro (RJ); 2009 jan.

Corrêa MSNP, Corrêa FNP, Corrêa JPNP, Murakami C, Mendes FM. Prevalence and associated factors of dental erosion in children and adolescents of a private dental practice. Int J Paediatr Dent 2011; 21(6):451-8. doi: 10.1111/j.1365-263X.2011.01150.x.

Singh S, Jindal R. Evaluating the buffering capacity of various soft drinks, fruit juices and tea. J Conserv Dent 2010; 13(3):129-31. doi:10.4103/0972-0707.71643.

Mirkarimi M, Toomarian L. Effect of green tea extract on the treatment of dentin erosion: An in vitro study. J Dent 2012; 9(4):224-8.

Alves LS, Brusius CD, Damé-Teixeira N, Maltz M, Susin C. Dental erosion among 12-year-old schoolchildren: a population-based cross-sectional study in South Brazil. Int Dent J 2015; 65(6):322-30. doi: 10.1111/idj.12189.

Gonçalves GKM, GuglielmI CAB, Correa FNP, Raggio DP, Correa MSNP. Erosive potential of different types of grape juices. Pesqui Odontol Bras 2012; 26(5):457-63. doi:1 0.1590/S1806-83242012005000015.

Araújo NC, Massoni ACLT, Katz CRT, Rosenblatt A. Dental erosion and consumption of industrialized beverages in a group of children in Recife/Pernambuco, Brazil. Rev Odonto Ciênc 2009; 24(2):120-3.

Bardsley PF, Taylor S, Milosevic A. Epidemiological studies of tooth wear and dental erosion in 14-year-old children in North West England. Part 1: The relationship with water fluoridation and social deprivation. Br Dent J 2004; 197(8):413-6. doi: 10.1038/sj.bdj.4811747.

Benjakul P, Chuenarrom C. Association of dental enamel loss with the pH and titratable acidity of beverages. J Dent Sci 2011; 6(3):129-33. doi: 10.1016/j.jds.2011.05.001.

West NX, Hughes JA, Addy M. Erosion of dentine and enamel in vitro by dietary acids: the effect of temperature, acid character, concentration and exposure time. J Oral Rehabil 2000; 27(10):875-80.

Cochrane NJ, Cai F, Yuan Y, Reynolds EC. Erosive potential of beverages sold in Australian schools. Aust Dent J 2009; 54(3):238-44. doi: 10.1111/j.1834-7819.2009.01126.x.

Meurman JH, Frank RM. Progression and surface ultrastructure of in vitro caused erosive lesions in human and bovine enamel. Caries Res 1991; 25(2):81-7.

Young WG. Tooth wear: diet analysis and advice. Int Dent J 2005; 55(2):68-72.

Imfeld T. Dental erosion, definition classification and links. Eur J of Oral Sci 1996; 104 (2(Pt 2)):151-5.

Grenby TH, Phillips A, Desai T, Mistry M. Laboratory studies of the dental properties of soft drinks. Br J Nutr 1989; 62(2):451-64.

Jaâfoura S, Khemiss F, Kammoun D, Chebbi R, Baccouche C, Ghoul-Mazgar S. Dental erosion and tea: A systematic review. Int J Sci Res 2014; 3(11):2436-9.

Hughes JA, West NX, Parker DM, van den Braak MH, Addy M. Effects of pH and concentration of citric, malic and lactic acids on enamel, in vitro. J Dent 2000; 28(2):147-52.


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