Saliva pH

Saliva is a digestive fluid that is mixed in the mouth by three pairs of large salivary glands (mandibular glands, parotid glands, and sublingual glands) and mucus secreted by many small mucous glands on the oral cavity. The pH of the mixed human saliva is 6.6~7.1, which has the ability to buffer acid. The pH and buffering capacity of saliva are related to the erosive activity. The saliva pH and buffering capacity are reduced, and the erosive activity is strong, which is easy to cause and aggravate caries formation. Basic Information Specialist classification: oral examination classification: body fluid examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: The lower the pH value, the more acidic the saliva is, which is conducive to the formation of dental caries. Normal value: Saliva pH: 6.6-7.1 Above normal: The higher the pH, the more alkaline the saliva is, and the oral environment is not conducive to the growth of sensitive bacteria such as Candida. However, too alkaline may cause the balance of oral acidity and alkalinity to be destroyed, and oral diseases may occur. negative: Positive: Tips: Saliva specimens are taken from the supernatant for disposal, and opaque semi-solid substances are discarded. Normal value Saliva pH is 6.6~7.1. Clinical significance Decrease in pH: The lower the pH, the more acidic the saliva is, which is good for caries formation. Increased pH: The more alkaline the saliva, the oral environment is not conducive to the growth of sensitive bacteria such as Candida. However, too alkaline may cause the balance of oral acidity and alkalinity to be destroyed, and oral diseases may occur. Low result may be disease: caries note Saliva retention 1. Put 5-10 ml of naturally flowing saliva into a dry and clean container (small beaker, triangle bottle or crude test tube, etc.) and boil for 10 minutes in a water bath (to inactivate the salivary enzyme that can not activate the blood type substance, also Destroy anti-A and anti-B) that are commonly found in saliva. 2. Centrifuge at 3000r/min for 10min, leave the supernatant for use, and discard the opaque semi-solid material. Because the saliva composition is not constant enough, saliva analysis must strictly control the experimental conditions, especially the specimen collection method and time, otherwise the results will be affected. Inspection process The principle of chemical reaction using simple colorimetric assay. The test paper for measuring the buffering capacity contains a quantitative acidic substance and a pH indicator agent, and when saliva is added, the pH of the saliva is measured from the pH change as compared with the standard color gradation. 1, saliva retention (1) Put 5-10 ml of naturally flowing saliva into a dry and clean container (small beaker, triangle bottle or crude test tube, etc.) and boil for 10 minutes in a water bath (to inactivate the salivary enzyme that can make the blood type substance inactive). It also destroys anti-A and anti-B) that are commonly found in saliva. (2) Centrifuge at 3000r/min for 10min, leave the supernatant for use, and discard the opaque semi-solid material. 2. Use a pH indicator, measure with a pH test paper or use a pH meter. Not suitable for the crowd Severe oral disease patients. Adverse reactions and risks no.

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