What is the term for a dental disease affecting children from birth to 6 years old?

The term for a dental disease affecting children from birth to 6 years old is Early Childhood Caries (ECC). This condition specifically refers to the presence of dental caries, or cavities, in young children, particularly during their formative years when their teeth are still developing and are more vulnerable to decay.

ECC is characterized by the presence of one or more decayed, missing (due to caries), or filled tooth surfaces in primary teeth in children aged 0 to 6 years. It is essential to recognize and address this issue early, as untreated decay can lead to pain, infection, and potential difficulties in eating, speaking, and development.

The other conditions mentioned do not specifically target the age group defined in the question. Dental caries can occur in individuals of all ages but is not exclusive to the younger demographic. Canker sores are painful ulcers that can appear in the mouth and are not directly a dental disease but rather a condition of the soft tissues. Oral thrush is a fungal infection affecting the mouth, not a dental disease affecting teeth. Therefore, Early Childhood Caries is the most accurate term to describe this condition within the specified age range.