From 101 Reasons to Breastfeed Your Childhttp://www.promom.org/101/77. Facilitates proper dental and jaw development
Nursing is good for a baby's tooth and jaw development. Babies drinking from the human breast have to use as much as 60 times more energy to get food than do those drinking from a bottle. Obviously, a nursing baby's jaws are receiving much more exercise as she pulls her mother's milk into her mouth. Apparently, this constant gentle pulling assists the growth of well-formed jaws and straight, healthy teeth. Among breastfed infants, the longer the duration of nursing, the less chance of dental malocclusion.
The Complete Book Of Breastfeeding M.S. Eiger. MD, S. Wendkos Olds, Copyright 1972, 1987 Comstock, Inc., Workman Publishing Co., Inc., 708 Broadway, New York, NY 10003
Labbok, M.H. "Does Breastfeeding Protect against Malocclusion? An Analysis of the 1981 Child Health Supplement to the National Health Interview Survey" American Journal of Preventive Medicine, 198779. Less money spent on corrective orthodontia
The longer you breastfeed, the more likely the babies teeth will come in properly. If the teeth come in straight, there's no need to fix them.
Leite ICG, et al. Associação entre aleitamento materno e hábitos de sucção não-nutritivos. Revista da Associação Paulista dos Cirurgiões Dentistas 1999;53:151-5
Paunio P, Rautava P, Sillanpaa M. The Finnish Family Competence Study: the effects of living conditions on sucking habits in 3-year-old Finnish children and the association between these habits and dental occlusion. Acta Odontol Scand 1993;51:23-9.
Degano MP, Degano RA. Breastfeeding and oral health. A primer for the dental practitioner. NY State Dent J 1993;59:30-2.80. Better speech development
Tongue thrust problems often develop among bottle-fed babies as they try to slow down the flow of milk coming from an artificial nipple. This can lead to speech problems later on. "Early weaning may lead to the interruption of proper oral motor development provoking alterations to the posture and strength of the speech organs and harming the functions of chewing, swallowing, breathing, and articulation of speech sounds. The lack of physiological sucking on the breast may interfere in the oral motor development, possibly causing malocclusion, oral respiration and oral motor disorders."
Neiva et al, J Pediatr (Rio J) 2003;79(1):07-12