dental anatomy Permanent mandibular right second premolar

1. DENTAL ANATOMY LAB
PERMANENT MANDIBULAR RIGHT
SECOND PREMOLAR

2. TOOTH NOTATION

3. PERMANENT MANDIBULAR RIGHT SECOND PREMOLAR
• Eruption
11 - 12 years
• Root Complete
13 - 14 years
CHRONOLOGY

4. BUCCAL
SURFACE
1. Buccal cusp.
2. Mesiobuccal cusp ridge.
3. Distobuccal cusp ridge.
4. Buccal cervical ridge.
5. Cervical line.
6. Root & its apex.

5. BUCCAL
SURFACE
• Proximal Contact:
1- Mesial
Within middle third.
2- Distal
Within middle third.

6. LINGUAL
SURFACE
1. Lingual cusp = Mesiolingual cusp ridge + Distolingual cusp ridge.
2. Buccal cusp = Mesiobuccal cusp ridge + Distobuccal cusp ridge.
3. Mesial marginal ridge.
4. Distal marginal ridge.
5. Cervical line.
6. Root & its apex.

7. MESIAL
SURFACE
1. Buccal cusp & its Mesial cusp ridge.
2. Mesiolingual cusp & its Mesial cusp ridge.
3. Mesial marginal ridge.
4. Buccal cervical ridge.
5. Mesial developmental depression.
6. Cervical line.
7. Root & its apex.

8. MESIAL
SURFACE
• Contour Height
1- Buccal
Within middle third.
2- Lingual
Within middle third.

9. DISTAL
SURFACE
1. Buccal cusp & its Distal cusp ridge.
2. Distolingual cusp & its Distal cusp ridge.
3. Distal marginal ridge.
4. Distal contact area.
5. Buccal cervical ridge.
6. Cervical line.
7. Root & its apex.

10. OCCLUSAL
SURFACE
• Three-cusp type ⤵ :
1. Buccal cusp = Mesiobuccal cusp ridge + Distobuccal cusp ridge.
2. Mesiolingual cusp = Mesiolingual cusp ridge + Distolingual cusp ridge.
3. Distolingual cusp = Mesiolingual cusp ridge + Distolingual cusp ridge.
4. Mesial marginal ridge.
5. Distal marginal ridge.
6. Mesial triangular fossa & its mesial pit.
7. Distal triangular fossa & its distal pit.
8. Central developmental groove.
9. Mesiolingual developmental groove.
10.Buccal cervical ridge.
1- Two-cusp type 2- Three-cusp type

11. OCCLUSAL
SURFACE
• 0utline:
1- Two-cusp type: Round.
2- Three-cusp type: Square.
2
1

12. • WHEELER’S DENTAL ANATOMY, PHYSIOLOGY AND OCCLUSION, 10TH.
Reference
END OF LAB
QUIZ

13. QUESTION :
1-
2-
Time = 5 minutes.
Good Luck