Mouth and neck - Teeth - Direction of teeth
3 important questions on Mouth and neck - Teeth - Direction of teeth
What is the triadan numbering system?
Dividing jaw into quadrants
- Upper right: 100
- Upper left: 200
- Lower left: 300
- Lower right: 400
Incisor nearest to the midline is always 01.
Canine is always 04
PM4 is always 8
- Upper right: 100
- Upper left: 200
- Lower left: 300
- Lower right: 400
Incisor nearest to the midline is always 01.
Canine is always 04
PM4 is always 8
What are the anatomical directional terms for teeth?
1: nearest neighbouring tooth towards rostrum
2: nearest neighbour away towards the rostrum
3: pointing away from the oral cavity
4: pointing into the oral cavity
2: nearest neighbour away towards the rostrum
3: pointing away from the oral cavity
4: pointing into the oral cavity
What are the directional terms for teeth?
- Mesial: pointing at the nearest neighbouring tooth towards rostrum
- Distal: pointing at the nearest neighbouring tooth away from rostrum
- Labial: pointing away from the oral cavity and towards lips
- Buccal: pointing away from the oral cavity and towards cheeks
- Palatal: pointing into the oral cavity and the hard palate
- Maxillary: pointing into the oral cavity caudal to the hard palate
- Distal: pointing at the nearest neighbouring tooth away from rostrum
- Labial: pointing away from the oral cavity and towards lips
- Buccal: pointing away from the oral cavity and towards cheeks
- Palatal: pointing into the oral cavity and the hard palate
- Maxillary: pointing into the oral cavity caudal to the hard palate
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