Sealant programme is done to:
**Core Concept**
The sealant programme is an initiative aimed at preventing dental caries and promoting oral health, particularly among children and adolescents. This programme involves applying a protective sealant to the occlusal surfaces of molars and premolars to prevent the accumulation of bacteria and acid production.
**Why the Correct Answer is Right**
The primary goal of the sealant programme is to prevent the initiation of dental caries by creating a physical barrier that prevents the ingress of bacteria and food particles. The sealant fills in the fissures and crevices of the teeth, making it difficult for acid-producing bacteria to colonize and produce enamel-dissolving acid. This prevents the demineralization of tooth enamel and the subsequent development of dental caries.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the sealant programme is not primarily focused on treating existing dental caries, but rather on preventing them from occurring in the first place.
**Option B:** This option is incorrect because while dental sealants can be applied to both primary and permanent teeth, the primary target of the sealant programme is children and adolescents, particularly those with a high risk of developing dental caries.
**Option C:** This option is incorrect because while dental sealants can be used in conjunction with other preventive measures, such as fluoride varnishes and regular brushing and flossing, the sealant programme is primarily focused on the application of dental sealants.
**Clinical Pearl / High-Yield Fact**
The sealant programme is a cost-effective and highly effective way to prevent dental caries, and its benefits can be seen in a significant reduction in the incidence of dental caries among children and adolescents.
**Correct Answer: D. Preventing dental caries and promoting oral health.**