Care of the primary teeth is important not only for proper function, but also to avoid a number of unpleasant conditions, such as pain, that result from their neglect.
American Academy of Pediatrics: «Signs and
Symptoms of Primary Tooth Eruption: A Meta - analysis,» «Teething: 4 to 7 Months.»
If deciduous (baby) teeth erupt during an accelerated growth phase of one jaw, both
sets of primary teeth can interlock and result in an abnormal bite.