Question

Tooth decay starts when the pH of our mouth is_______.
1. higher than 5.5
2. higher than 7.5
3. higher than 6.5
4. lower than 5.5

Answer 1

Correct Answer - Option 4 : lower than 5.5

The correct answer is lower than 5.5.

• At the ph of 5.5, the teeth risk of cavities and tooth decay begins in the mouth.
• A healthy mouth is neutral Ph range. A teeth can actually become stronger and remineralize when the Ph of mouth is 7.5 or above.
• If the Ph of teeth maintained at the basic level the healthy bacteria within the dental plaque biofilm will not die and the shift to cavity-causing bacteria will not occur.

The role of toothpaste to prevent tooth decay is as follows-

• Fluoride is a mineral that can prevent tooth decay from progressing. It can even reverse or stop, early tooth decay. Hence most of the toothpastes have fluoride ions.
• Secondly, tooth-pastes have salts in them which decreases the acidity of mouth.