The baby's dentition
The first teeth milk are forming at 2-3 months of pregnancy to appear in the baby’s mouth from 6 months to 3 years.
During the initial milk teeth positioning, swallowing will evolve from infantile (the tongue working as a shock absorber) to adult (teeth closed, the tongue leaning against the rear of the incisors and on the palate).
From the age of 6 years, milk teeth will be progressively replaced by the final teeth. This to accompanied our growing and because the teeth are not expending, we get first milk teeth before final teeth.
Milk teeth in good health allow a balanced chewing favorable to a jaw and face harmonious growing so they are the base of a good final dentition.
If the chewing is done only on one side, because of decay for instance, or a wrong positioning, the consequence will be an asymmetrical development of the face by growing defect of the non-stimulated side.
Think to his teeth rignt now !
Usual teat effects on teeth positioning
Feeding the baby during his first year requires about 3 million suction movements which are as much as stimuli for his bones growing. This bones growing is much less with the usual teat than at breast as it is the traction of the chewing muscles on the bone which is stimulating the growing.
The usual teat is soliciting 2 to 3 times less the chewing muscles than the breast feeding.
With the usual teat, the baby compresses the nipple against his palate to extract the milk. This inappropriate piston movement is the cause of a palate distortion at the detriment of the nasal pits.
So the jaws will not have grown enough to welcome properly the final teeth, with 2 consequences:
    - Incisors obstruction: overlapping of the front teeth
    - Lack of room for the eruption of the wisdom teeth
Usual pacifiers (dummies) effects:
Teeth positioning is function of the balancing between the lips muscles and the ones of the tongue.
Maintaining the infantile swallowing over the normal age causes an imbalance favorable to the tongue with the consequence to throw up the teeth to the front.
Usual pacifiers are very often responsible of the infantile swallowing persistence.
Pacifier volume is modifying the baby’s teeth positioning and creates a space between the front teeth called “front gaping”
Adult swallowing
Atypical swallowing