How Many Teeth are Present Totally?
Milk teeth: There are 20 teeth present in the deciduous/primary dentition i.e, 10 in the upper jaw and 10 in the lower jaw.
Permanent teeth: There are 32 teeth present in the permanent dentition i.e, 16 in the upper jaw and 16 in the lower jaw.
Did You Know That a Child May Be Born with Teeth?
- Children may be born with teeth or their teeth may erupt immediately after birth.
- Teeth present at the time of birth are called natal teeth.
- Teeth eruption soon after birth (within one month after birth) are called neonatal teeth.
- It is advised to extract those teeth as the child might swallow or get choked.
- They may also cause irritation to the mother’s nipples during breastfeeding.
Signs and Symptoms During Milk Tooth Eruption:
- Itchy gums and hence will try to bite things with the gums.
- Child may be irritated and will take everything in to the mouth.
Deciduous Dentition Eruption Sequence:
- Lower central incisors: 5-8 months of age.
- Upper central incisors: 6-10 months of age.
- Lower lateral incisors: 7-10 months of age.
- Upper lateral incisors: 8-12 months of age.
- Upper and lower first molars: 11-18 months of age.
- Upper and lower canines: 16-20 months of age.
- Upper and lower second molars: 20-30 months of age.
There are 32 permanent teeth in adults which replace the 20 primary teeth. Primary teeth exfoliation leads to the eruption of permanent teeth. The deciduous central incisors, lateral incisors and canine are replaced by permanent central incisors, lateral incisors and canine respectively. The deciduous first molars and second molars are replaced by permanent first premolars and second premolars respectively. In addition to these, permanent first, second and third molars also erupt.
Permanent Dentition Eruption Sequence:
- Upper and lower first molars: 6-7 years of age.
- Lower central incisors: 6-7 years of age.
- Upper central incisors: 7-8 years of age.
- Lower lateral incisors: 7-8 years of age.
- Upper lateral incisors: 8-9 years of age.
- Lower canine: 9-10 years of age.
- Upper and lower first premolars: 10-12 years of age.
- Upper second premolars: 10-12 years of age.
- Lower second premolars: 11-12 years of age.
- Upper canine: 11-12 years of age.
- Lower second molars: 11-13 years of age.
- Upper second molars: 12-13 years of age.
- Upper and lower third molars: 17 years onwards.
The permanent teeth loss occurs due to periodontal disease, bone loss, pathological conditions, extraction of grossly decayed tooth, for orthodontic treatment, fractured tooth, etc.
Your child's milk teeth eruption should start by the age of 5-6 months. If the teeth do not erupt even by the age of 12 months, consult a dentist online --> https://www.icliniq.com/ask-a-doctor-online/dentist
Last reviewed at: 07.Sep.2018