Why do preterm or low birth weight (LBW) children have an increased caries risk?

Why do preterm or low birth weight (LBW) children have an increased caries risk?

• A. They have a much higher rate of enamel defects
• B. They have stronger enamel
• C. They have more saliva
• D. They have less enamel surface area

Answer: (A)

Enamel defects from disrupted tooth development in preterm and low birth weight children make their enamel intrinsically more vulnerable. Systemic stress during early life can cause enamel hypoplasia or hypomineralization, leaving a thin, porous, and irregular enamel surface with pits. These defects provide rough areas for plaque to accumulate and create pathways for acids to diffuse into the enamel, so demineralization occurs more readily and caries can start earlier and progress faster. So the increased risk comes from the enamel itself being of poorer quality, not from having more saliva or less surface area. Stronger enamel or more saliva would generally offer protection, which is not observed here.

Enamel defects from disrupted tooth development in preterm and low birth weight children make their enamel intrinsically more vulnerable. Systemic stress during early life can cause enamel hypoplasia or hypomineralization, leaving a thin, porous, and irregular enamel surface with pits. These defects provide rough areas for plaque to accumulate and create pathways for acids to diffuse into the enamel, so demineralization occurs more readily and caries can start earlier and progress faster. So the increased risk comes from the enamel itself being of poorer quality, not from having more saliva or less surface area. Stronger enamel or more saliva would generally offer protection, which is not observed here.