Education /BDS2 OSCE Prep - Paediatric Prep
what is the general rule of eruption of primary teeth?
lowers erupt before uppers
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Term
Definition
what is the general rule of eruption of primary teeth?
lowers erupt before uppers
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what is the seuqence of eruption of primary teeth?
A B D C E
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when do upper central primary incisors erupt?
8-12 months
when do lower lateral primary incisors erupt?
6-10 months
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when do upper primary first molars erupt?
13-19 month
when do lower primary first molars erupt?
14-18 months
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| Term | Definition |
|---|---|
what is the general rule of eruption of primary teeth? | lowers erupt before uppers |
what is the seuqence of eruption of primary teeth? | A B D C E |
when do upper central primary incisors erupt? | 8-12 months |
when do lower lateral primary incisors erupt? | 6-10 months |
when do upper primary first molars erupt? | 13-19 month |
when do lower primary first molars erupt? | 14-18 months |
when do upper primary canines erupt? | 16-22 months |
when do lower primary canines erupt? | 17-23 months |
when do upper primary second molars erupt? | 25-33 months |
when do upper primary canines erupt? | Upper primary canines (also known as deciduous or baby canines) typically erupt between 16 to 22 months of age. |
Question: when do lower primary second molars erupt? | 23-31 months |
how does the morphology of primary teeth differ to permanent teeth as a general rule? | smaller crown smaller root length narrower roots whiter in colour large pulp chambers that sit occlusally |
what morphological feature can typically be found on primary upper and lower first molars? | prominant mesiobuccal tubercle |
what specific morphological feature can typically be found on primary upper second molars? | transverse ridge |
what specific morphological feature can typically be found on primary lower second molars? | three buccal cusps |
what is the mixed dentition defined as? | the mixed dentition stage begins from the time the first permanent tooth erupts until the exfoliation of the last primary tooth. |
what ages (usually) does the mixed dentition exist between? | between 6 - 11 years of age |
what is the eruption sequence for the upper arch of the permanent dentition? | 6 1 2 4 5 3 7 8 |
what is the eruption sequence for the lower arch of the permanent dentition? | 6 1 2 3 4 5 7 8 |
what permanent teeth would you expect to be present in a 6 year old child? | upper & lower first molars - lower central incisor |
what permanent teeth would you expect to be present in a 7 year old child? | both first molars lower central incisor upper central incisor lower lateral incisor |
what permanent teeth would you expect to be present in an 8 year old child? | both first molars both central incisors both lateral incisors |
what permanent teeth would you expect to see in a 9 year old child? | both first molars both central incisors both lateral incisors lower canine |
what permanent teeth would you expect to see in a 10 year old child? | both first molars both central incisors both lateral incisors lower canine both first premolars |
what permanent teeth would you expect to see in a 10 and a half year old child? | both first molars both central incisors both lateral incisors lower canine both first premolars upper second premolar |
what permanent teeth would you expect to see in an 11 year old child (approx)? | both first molars both central incisors both lateral incisors both canines both second premolars lower second molar |
what permanent teeth would you expect to see in a 12 year old child? | both first molars both central incisors both lateral incisors both canines both second premolars both second molars |
at what age (roughly) would you expect third molars to erupt in a child? | 17 years old |
a child comes into the surgery, on examination you can see that they have both first molars and their lower central incisors, what age are they roughly? | 6 years old |