Tooth surfaces have remineralization potential because the plaque biofilms in saliva provide a buffering action.

Question

Quizplus · Accepted Answer

The statement is correct,but the reason is not correct.Tooth surfaces (enamel and cementum)have the restorative ability of remineralization because saliva is saturated with calcium,phosphate,and fluoride ions.Note that plaque biofilms are not present in healthy saliva,nor do plaque biofilms neutralize saliva.Conversely,plaque biofilms are highly acidic; as a result,they lower salivary pH.Note that plaque biofilm has the unique ability to form a local barrier on enamel and can interfere with demineralization.However,acids produced in plaque biofilm have harmful properties offsetting any benefit of this barrier effect.

Tooth Surfaces Have Remineralization Potential Because the Plaque Biofilms in Saliva