Dentistry

Dentistry Today: Cow Milk Beats Breast Milk For Healthy Teeth

The Journal of Pediatrics has Comparison of the Cariogenicity of Cola, Honey, Cow Milk, Human Milk, and Sucrose.

Objective. The purpose of this study was to determine and compare the cariogenicity of various fluids that are frequently fed to infants and toddlers. We chose to examine sucrose, cola drink, honey, human milk, cow milk, and water because some of these have been associated with development of early childhood caries, although direct experimental evidence is lacking.

Methods. We used our desalivated rat model because the approach mimics the situation found in infants, whereby the flow of saliva is interrupted through mechanical effects of a nipple. The animals received basic nutrition by gavage, and the fluids being tested were available ad libitum. Thus, the only substances that came in contact with teeth were the test fluids. The investigation continued for 14 days.

Results. Cola, sucrose, and honey were by far the most cariogenic. In addition, cola and honey induced considerable erosion. Human milk was significantly more cariogenic than cow milk probably because of its lower mineral content and higher level of lactose.

Conclusions. Our data show that the use of honey, cola, and sucrose water in nursing bottles should be discouraged. Although human milk is more cariogenic than cow milk, it is no more cariogenic than are common infant formulas. Protracted exposure to human milk or formula through allowing an infant to sleep on the nipple should be discouraged, and the need for oral hygiene after tooth eruption should be emphasized.

Flap would not recommend the abandonment of breast-feeding.

But, those overnight bottles laced with sugary substances and honey have got to go – Flap has seen too much dental damage as a result.

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2 Comments

  • Arly Helm, MS, IBCLC

    It is interesting that this rat study seems to suggest that human milk is cariogenic, and yet severe caries in exclusively breastfed infants is almost always related to a familial weakness in enameling or other genetic predisposition.

    We need to be careful about extrapolating from an artificial study, even one where we don’t immediately see any problem with the design, to make conclusions about the human population which are not supported by epidemiological evidence.

    Caries existed before bottles, but not at the significantly high levels they do now. Looking over the human population, it is clear that breastfeeding throughout the night well into toddlerhood, which has been the norm for most of human history, has served us well in supporting dental health and development.

    For more discussion on this topic, see Brian Palmer, DDS, at http://www.brianpalmerdds.com/caries.htm