Primary tooth fluorosis and amoxicillin use during infancy.

Area of Science:

• Pediatric Dentistry
• Dental Public Health
• Developmental Biology

Background:

• Amoxicillin is a widely used antibiotic in early childhood.
• Potential links between amoxicillin and enamel defects, including fluorosis, require further investigation.
• Primary tooth fluorosis assessment is crucial for understanding early developmental influences.

Purpose of the Study:

• To investigate the association between amoxicillin use in the first year of life and primary tooth fluorosis.
• To determine if amoxicillin exposure is a risk factor for developing primary tooth enamel defects.
• To differentiate the impact of amoxicillin from fluoride intake on tooth development.

Main Methods:

• Prospective cohort study of 490 infants from birth.
• Data collection via questionnaires on amoxicillin use and fluoride intake.
• Clinical assessment of primary tooth fluorosis by calibrated examiners around age 5.

Main Results:

• Bivariate analysis indicated increased risk of molar fluorosis with amoxicillin use (6 weeks to 6 months).
• Multivariate analysis, controlling for fluoride intake, showed no significant association between amoxicillin and fluorosis.
• Fluoride intake was the only statistically significant predictor of primary tooth fluorosis in multivariate models.

Conclusions:

• Fluoride exposure is the sole significant predictor of primary tooth fluorosis.
• Amoxicillin may play a role in fluorosis development, especially in low-fluoride environments.
• Further research on amoxicillin's impact on permanent tooth fluorosis is recommended.