Question

prevents saliva to reach the tooth surface to neutralise the acid which are formed by the bacteria​

Answer 1

Answer:

The acquired pellicle may protect against erosion by acting as a diffusion barrier or a perm-selective membrane, preventing direct contact between the acids and tooth surface, thus reducing the dissolution rate of dental hard tissue.

Answer 2

• As we know that perm-selective membranes prevent the tooth from contact with the acid.

• The remineralization and demineralization can be prevented by the saliva.

• On the surface of enamel, a protein film is formed is known as a dental pellicle. in the formation of a dental pellicle, saliva plays an important role.

• Dental pellicles act as a perm-selective membrane.