There are two sets of teeth in human beings
1: deciduous teeth(milk teeth)
2:permanent (adualt teeth)
According to shape and functions 4 types of teeth present in mouth
1:incisors
2:canines
3:premolars
4:molars
Teeth are arranged in two arches,upper and lower.
Upper arch named Maxillary arch
Lower arch named mandibular arch
Each arch holds 16 teeth out of 32 teeth
Each arch is divided into two Quardrants by midline plan
Incisors
Morphology of central incisors
These are towards midline and only teeth having mesial to mesial contact of two central incisors, all other teeth have contact points with mesial of one tooth and distal side of adjascent tooth .
From facial /lingual view crown is trapazoid and from proximal view it lookslike a Wedge.mosioincisol angle is more square and disto incisol angle is round
