Primary Teeth Flashcards
Adult teeth 4-13 replace
Primary teeth A-J
Adult teeth 20-29 replace
Primary teeth K-T
Succedaneous teeth
Incisors, Canines, Premolars
Non-succedaneous teeth
Molars
Hard tissue forms between ___ and ____
4-6 months in utero
All primary teeth erupt by:
2-3 years
All roots are complete by:
3 years
Tooth Emergence:
- No teeth
- Primary teeth erupting
- Primary teeth only
- Mixed Dentition
- Permanent teeth only
- 3rd molars
- Birth-6 months
- 6 months - 2 years
- 2-6 years
- 6-12 years
- 12+ years
- Late teens - early 20s
Rule of 3s:
Crown formation + 3 years = Eruption
Eruption + 3 years = Root completion
Order of emergence of primary teeth (general)
- Mandibular central incisor (6 mo)
- Other incisors
- First molars
- Canines
- Second molars (2 yr)
Order of emergence of secondary teeth
- First molars and mandibular centrals (6)
- Other incisors (7-9)
- Mandibular canines (9-10)
- Premolars (10-12)
- Maxillary canines (12)
- Second molars (12)
- Third molars
In permanent and primary dentition, which is larger?
First molars
Second molars?
In permanent, first molars are larger.
In primary, second molars are larger
Maxillary incisor roots in primary teeth bend in which directions?
Lingually in the cervical half and labially in the apical half
What is unique about the contact of maxillary canines in primary teeth?
What tooth shares this quality?
Mesial contact of the maxillary canine crown is more cervical than distal.
Mandibular first premolar in the permanent teeth shares this quality
What is unique about the mesial cusp ridge of maxillary canines in primary teeth?
What tooth shares this quality?
The mesial cusp ridge is longer than the distal.
Maxillary first premolar in permanent teeth shares this.
Maxillary molars in primary teeth are wider
BL
Mandibular molars in primary teeth are wider
MD
All primary molars have ____ (like the mandibular 2nd molar in permanent teeth)
Prominent buccal bulges (mesiobuccal)
In primary molars: The cervical line curves ___ in the ___ half
Apically in the mesial half of the buccal surface
Primary second molars resemble secondary ___
First molars
Primary second molars (max) can have how many cusps?
Four cusps plus Carabelli
In primary second molars (max), which cusp is larger: MB or ML?
Which is larger in permanent?
Neither. The MB and ML cusp are the same.
In permanent teeth, ML is the largest (first molars)
Primary second molars (mand) can have how many cusps?
5 cusps
In primary second molars (mand), which cusp is the widest: DB, MB, D?
DB is the widest. MB and D are almost the same
Which cusps are most prominent on maxillary first molars in primary teeth?
MB and ML. DB and DL are very small
DL can also be absent (like permanent)
Primary maxillary 1st molar has a __ shaped groove pattern
H shaped
Pulps in primary teeth are:
Larger (in proportion to tooth)
Molar pulp chambers in primary teeth are located mostly:
In the crown (due to short trunk)
Primary tooth eruption:
Mandibular:
Maxillary:
Mandibular
- Centrals (6 mo)
- Laterals (9 mo)
- 1st molar (12 mo)
- Canine (16 mo)
- 2nd molar (20 mo)
Maxillary
- Centrals (7 mo)
- Laterals (7 mo)
- 1st molar (14 mo)
- Canine (18 mo)
- 2nd molar (2-3 years)
Permanent tooth eruption:
Mandibular:
Maxillary:
Mandibular
- 1st molar (6-7)
- Central (6-7)
- Lateral (7-8)
- Canine (9-10)
- 1st premolar (10-12)
- 2nd premolar (11-12)
- 2nd molar (11-13)
Maxillary
- 1st molar (6-7)
- Central (7-8)
- Lateral (8-9)
- 1st premolar (10-11)
- 2nd premolar (10-12)
- Canine (11-12)
- 2nd molar (12-15)
What teeth are often the last to erupt
Primary maxillary canines
