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Letters
September 1, 2004

Antepartum Dental Radiography and Low Birth Weight—Reply

Author Affiliations
 

Letters Section Editor: Robert M. Golub, MD, Senior Editor.

JAMA. 2004;292(9):1019. doi:10.1001/jama.292.9.1020-b

In Reply: We share the concerns about possible confounding raised by Dr Reiman (lead poisoning) and Dr Pisaniello (smoking). While restriction of the analysis to individuals with high socioeconomic status and the elimination of self-reported smokers during pregnancy did not affect our estimates of the relationship between dental radiation and LBW, smoking cannot be entirely excluded as a residual confounder. To our knowledge, no documented lead poisoning was reported in our study population, and lead poisoning associated with using intraoral dental films would not explain our observed association with extraoral films or orthodontic procedures. It nevertheless remains an interesting alternative explanation for our findings.

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