provide information in regard to calcification and eruption times of permanent and primary teeth

Primary teeth, also known as baby teeth, usually start to appear when a baby is around 6 months old. All 20 primary teeth should be present by the time the child is 2.5 to 3 years old.

Here is a general timeline for the eruption of primary teeth:

• Central incisors: 6-12 months
• Lateral incisors: 9-16 months
• Canines: 16-23 months
• First molars: 13-19 months
• Second molars: 23-33 months

Calcification of primary teeth begins in utero, around the 14th to 19th week of pregnancy for the central incisors, and continues until about a year after birth for the second molars.

Permanent teeth, also known as adult teeth, start to come in, or erupt, between the ages of 6 and 12. Most people have all 32 of their permanent teeth by the time they are about 21 years old.

Here is a general timeline for the eruption of permanent teeth:

• First molars and central incisors: 6-7 years
• Lateral incisors: 7-8 years
• Canines and first premolars: 10-11 years
• Second premolars: 10-12 years
• Second molars: 11-13 years
• Third molars (wisdom teeth): 17-21 years

Calcification of permanent teeth begins shortly after birth for the first molars and continues until the late teens for the third molars.