Anatomy Unit 1 continuous - Line and point angles

Line angles

Junction of Labial (or Facial) and Mesial surfaces= Mesiofacial

What is the rules for naming line and point angles?

1. Proximal - start with Mesial or Distal

2. Axial - followed by Labial, Biccal and Lingual

3. Bitin Surface - followed by Incisal or Occlusal

The line where two surfaces coverge

• Junction of occlusal and distal surfaces = distocclusal line angle

• Junstion of lingual and mesial surfaces = mesiolingual line angle

Ponit angles

The junction of three surfaces of a tooth.

• Junction of the lingual, mesial and occlusal surfaces mesiolinguocclusal point angle

Divisional thirds

Where does the Plaque tends to first accumulate?

in the cervical / gingival third of the FACIAL surface

Root curves distally at the?

Apical third