Premolar Teeth

Morphology
Molar teeth (dentes premolares) are only 'in the permanent dentition between the canine and the first molar. They have, in contrast to cusps and incisors, five faces' (oral, vestibular, two approximal and masticatory - facies occlusalis). Their original name was dentes bicuspidati - teeth double-cusped, precisely because of the typical two bumps on the chewing surface that point vestibularly and orally.

On the chewing surface there are marginal ridges' in the approximal direction. Their main importance lies in supporting and strengthening the relief of the crown and mitigating the risk of its breakage. There is also a pronounced groove that goes mesiodistally and divides the surface into oral and buccal parts (it is more pronounced in the upper premolars than in the lower). We classify all premolars as pillars 'Class II

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