The reason why women with severe periodontal disease have a greater risk for preterm low-birth-weight (PLBW)babies is thought to be due to:

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The reason why women with severe periodontal disease have a greater risk for preterm low-birth-weight (PLBW)babies is thought to be due to certain biochemicals produced with periodontal disease,such as prostaglandin E₂,which may create hormones that cause early uterine contractions and labor.
It is not thought to be due to increased placental bacteremia causing the infant to reject the mother.
There is no evidence that it is from an increased metabolic requirement due to bacterial load.
There is no evidence that it is due to a rise in basal metabolic rate caused by the constant,chronic inflammatory response.

The Reason Why Women with Severe Periodontal Disease Have a Greater