They are used to chew the food.
The maxillary first premolar
The first premolar, also known as the first bicuspid, is typically the fourth tooth from the midline in each quadrant of the mouth. In adults, it is located between the canine and the second premolar. The first premolar usually has two cusps and is primarily used for grinding food. In the upper jaw, it often has a slightly larger and more prominent structure compared to its lower counterpart.
A premolar is a tooth situated in front of the molar teeth - in humans, it is between the canines and the molars.
The upper first premolar has Mesial Marginal Developmental Groove in its mesial aspect. It also has long central groove and no supplement groves on its occlusal surface.Also 80% of the upper premolars have 2 roots. However, the upper second premolar has no MMDG and many supplemental groves. Upper second premolar is more rounded and usually has one conical root.
2
Yes
There is no such thing as 'premnolar' and you must have meant 'premolar' meaning 'teeth' (molars) and this question has already been answered as 'What are premolars?'
A bicuspid is a tooth with two cusps - a premolar tooth.
it is a disease where the tooth has a hole and the gum rots
It grind and chewing the food.
mandibular second premolar
what do molar teeth do