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Brito AC, Dantas LR, De Brito AL, et al. Loss on drying, calcium concentration and pH of fluoride dentifrices. Contemp Clin Dent. 2015;6:S72-6doi: 10.4103/0976-237X.152962.
Brito, A. C., Dantas, L. R., De Brito, A. L., Muniz, A. C., Ramos, I. A., Cardoso, A. M., Xavier, A. F., & Cavalcanti, A. L. (2015). Loss on drying, calcium concentration and pH of fluoride dentifrices. Contemporary clinical dentistry, 6S72-6. https://doi.org/10.4103/0976-237X.152962
Brito, Arella Cristina Muniz, et al. "Loss on drying, calcium concentration and pH of fluoride dentifrices." Contemporary clinical dentistry vol. 6 (2015): S72-6. doi: https://doi.org/10.4103/0976-237X.152962
Brito AC, Dantas LR, De Brito AL, Muniz AC, Ramos IA, Cardoso AM, Xavier AF, Cavalcanti AL. Loss on drying, calcium concentration and pH of fluoride dentifrices. Contemp Clin Dent. 2015 Mar;6:S72-6. doi: 10.4103/0976-237X.152962. PMID: 25821380; PMCID: PMC4374324.
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Contemp Clin Dent. 2015 Mar;6:S72-6. doi: 10.4103/0976-237X.152962.

Loss on drying, calcium concentration and pH of fluoride dentifrices.

Contemporary clinical dentistry

Arella Cristina Muniz Brito, Lívia Rocha Dantas, André Luiz Fiquene De Brito, Ana Cristina Silva Muniz, Ianny Alves Ramos, Andreia Medeiros Rodrigues Cardoso, Alidianne Fábia Cabral Xavier, Alessandro Leite Cavalcanti

Affiliations

  1. Department of Dentistry, State University of Paraiba, Paraiba, Brazil.
  2. Department of Chemical Engineering, Federal University of Campina Grande, Campina Grande, Brazil.

PMID: 25821380 PMCID: PMC4374324 DOI: 10.4103/0976-237X.152962

Abstract

INTRODUCTION: Fluoride dentifrices containing calcium carbonate have advantages such as control of dental plaque and progression of dental caries, also contributing to oral hygiene, represent most dentifrices marketed in Brazil.

AIM: To evaluate the physicochemical properties of seven fluoride dentifrices containing calcium carbonate in relation to hydrogen potential (pH), loss on drying and calcium concentration.

MATERIALS AND METHODS: Data collection was performed using the potentiometric method for pH ranges, gravimetric analysis for loss on drying and atomic absorption spectrometry for the concentration of calcium ions. All tests were performed in triplicate and the analysis was performed entirely at random according to one-way analysis of variance at 5% significance level.

RESULTS: The pH values were alkaline and ranged from 8.67 (Oral-B 123(®)) to 10.03 (Colgate Máxima Proteção Anticáries(®)). The results of loss on drying ranged from 33.81% (Oral-B 123(®)) to 61.13% (Close Up(®)), with significant differences between brands tested. In relation to the calcium content, the highest and lowest concentrations were found in dentifrices Even(®) (155.55 g/kg) and Colgate Ultra Branco(®) (129 g/kg), respectively, with significant difference (P < 0.05).

CONCLUSION: Fluoride dentifrices analyzed showed alkaline pH and high levels of loss on drying and calcium concentration. However, these physicochemical characteristics differed according to the different brands tested.

Keywords: Calcium carbonate; chemistry; dentifrices

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