Admission Test for Dental Hygiene (ATDH) Practice

Question: 1 / 400

What is considered the ideal pH level in the mouth to help prevent caries?

Below 5.5

Between 6.2 and 7.0

The ideal pH level in the mouth to help prevent caries is between 6.2 and 7.0. This range is considered neutral to slightly alkaline, which is important for maintaining a healthy oral environment. When the pH level is within this range, it facilitates the remineralization of enamel, which helps to counteract the demineralization caused by acids produced by bacteria in the presence of fermentable carbohydrates. A neutral pH also supports the balance of beneficial bacteria in the mouth, reducing the risk of cavities and promoting overall oral health.

In contrast, a pH level below 5.5 is considered to be acidic and can contribute to enamel demineralization, increasing the risk of caries. A pH level above 7.5 may be too alkaline, which could disrupt the natural balance of the oral microbiome. Levels between 5.0 and 6.0 are also not ideal, as they are still on the acidic side and do not promote optimal conditions for preventing dental caries.

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Above 7.5

Between 5.0 and 6.0

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