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Effect of Black and Green Tea on Salivary pH: a Double Blinded Cross-Over Study / Efeito do Chá Preto e Verde no pH Salivar: um Estudo Duplo Cego Cross-Ove
Shirzaiy, Masoomeh; Dalirsani, Zohreh; Dehghan Haghighi, Javid.
  • Shirzaiy, Masoomeh; Zahedan University of Medical Science. Oral and Dental Diseases Research Center. Zahedan. IR
  • Dalirsani, Zohreh; Mashhad University of Medical Sciences. Oral and Maxillofacial Diseases Research Center. Mashhad. IR
  • Dehghan Haghighi, Javid; Zahedan University of Medical Sciences. School of Medicine. Department of Community Medicine. Zahedan. IR
Braz. dent. sci ; 24(3): 1-7, 2021. tab, ilus
Article in English | BBO, LILACS | ID: biblio-1281916
RESUMO

Introdução:

Alguns produtos à base de plantas podem afetar o pH salivar e a prevenção da cárie dentária. O consumo de chá tem efeitos inibidores sobre algumas bactérias orais.

Objetivo:

O objetivo deste estudo foi avaliar o efeito dos chás verde e preto sobre o pH salivar. Material e

Métodos:

neste estudo duplo-cego cruzado, amostras salivares de 50 estudantes saudáveis do sexo masculino da Faculdade de Odontologia de Zahedan, com idades entre 20-22 anos, foram coletadas para avaliação do pH salivar. Todos os voluntários foram solicitados a consumir chá preto comercial no primeiro dia e, em seguida, amostras de saliva foram coletadas antes de beber o chá, imediatamente após beber o chá, 5 e 10 minutos após o consumo do chá. Alternando com o consumo do chá verde, no segundo dia, as amostras de saliva foram coletadas novamente. Em seguida, o pH salivar foi estimado com um medidor de pH digital. Os dados foram analisados por meio de teste t independente e teste t de amostras pareadas.

Resultados:

O pH salivar médio antes e após o consumo de chá verde foi de 7,15 ± 0,05 e 7,56 ± 0,09, respectivamente, o que apresentou uma diferença notável (p <0,001). Foi de 7,14 ± 0,05 e 7,51 ± 0,10, respectivamente, para o chá preto, com diferença significativa (p <0,0001). O pH salivar médio após o consumo de chá verde foi significativamente maior do que o chá preto (p = 0,006).

Conclusão:

A ingestão de chá verde e preto levou a um aumento significativo no pH salivar, que foi maior após o consumo de chá verde em comparação com o chá preto. Este estudo sugere os efeitos benéficos de beber chá em fornecer um ambiente alcalino na cavidade oral (AU)
ABSTRACT

Background:

Some herbal products could affect on salivary pH and prevention of dental caries. Tea consumption has inhibition effects on some oral bacteria.

Objective:

The aim of this study was to evaluate the effect of green and black tea on salivary pH. Material and

Methods:

In this double blinded cross-over trial, salivary samples of 50 healthy male students of Zahedan Faculty of Dentistry, aged 20-22 years old were collected for evaluation of salivary pH. All volunteers were asked to consume commercially black tea on the first day and then saliva samples were collected before drinking tea and immediately after drinking tea and 5 and 10 minutes after tea consumption. With replacing consumption of green tea, at the second day, saliva samples were collected again. Then the salivary pH was estimated with a digital pH-meter. Data were analyzed through independent t-test and paired samples t-test.

Results:

Mean salivary pH before and after green tea consumption were 7.15±0.05 and 7.56±0.09, respectively, which showed a remarkable difference (p<0.001). It was 7.14±0.05 and 7.51 ± 0.10, respectively, for black tea, with significant difference (p<0.001). Mean salivary pH after green tea consumption was significantly higher than black tea (p= 0.006).

Conclusion:

Both green and black tea intake led to a significant rise in salivary pH, which was higher after green tea consumption compared to black tea. This study suggests the beneficial effects of drinking tea in providing an alkaline environment in oral cavity (AU)
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Saliva / Tea / Dental Caries Type of study: Controlled clinical trial Limits: Adult / Humans / Male Language: English Journal: Braz. dent. sci Journal subject: Dentistry / Sa£de Bucal Year: 2021 Type: Article Affiliation country: Iran Institution/Affiliation country: Mashhad University of Medical Sciences/IR / Zahedan University of Medical Science/IR / Zahedan University of Medical Sciences/IR

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Full text: Available Index: LILACS (Americas) Main subject: Saliva / Tea / Dental Caries Type of study: Controlled clinical trial Limits: Adult / Humans / Male Language: English Journal: Braz. dent. sci Journal subject: Dentistry / Sa£de Bucal Year: 2021 Type: Article Affiliation country: Iran Institution/Affiliation country: Mashhad University of Medical Sciences/IR / Zahedan University of Medical Science/IR / Zahedan University of Medical Sciences/IR