Tooth Development - Overview
Teeth vary in size, shape and their location in the jaws. These differences enable teeth to work together to help you chew, speak and smile. They also help give your face its shape and form.
The first primary (baby) teeth normally make their appearance in a baby’s mouth round about the age of 6 months. By approximately 25-33 months of age most babies have 20 primary teeth. These primary teeth are then shed and replaced by the erupting permanent teeth at various times throughout childhood. By age 21, all 32 of the permanent teeth have usually erupted.
Tooth Eruption Charts
Eruption Charts
Primary Teeth
Permanent Teeth
Tooth Numbering & Naming Charts
Each tooth in your mouth has its own specific name and number. This makes it easier to refer to specific teeth when discussing teeth, dental problems and treatment. Dentists in Namibia commonly use the International Standards Organization System of tooth numbering when referring to specific teeth.
The Primary Tooth Arch
Teeth numbers: Are called:
Are called: The Permanent Tooth Arch
Teeth numbers: Are called:
51, 61, 71 & 81
52, 62, 72 & 82
53, 63, 73 & 83
54, 64, 74 & 84
55, 65, 75 & 85
Primary central incisors
Primary lateral incisors
Primary canines or cuspids
First primary molars
Second primary molars
11, 21, 31 & 41
12, 22, 32 & 42
13, 23, 33 & 43
14, 24, 34 & 44
15, 25, 35 & 45
16, 26, 36 & 46
17, 27, 37 & 47
18, 28, 38 & 48
Central incisors
Lateral incisors
Canines or cuspids
First premolars or bicuspids
Second premolars or bicuspids
First molars
Second molars
Third molars or wisdom teeth
