20. Principles of cavity preparation according to Black. Nomenclature of cavities, surfaces, walls, angles, and edges

Question 1

1. What are principles of cavity preparation according to Black?

Answer 1

1/ Preparation is made with the principle of„preventive extension”
2/ Aim: to prevent the secunder caries
3/ The border of the cavity should be extended to areas that are normally self-cleansing, or cleanable, healthy tooth structure can be removed too

Question 2

2. Is the Black cavity preparation principle still used nowadays?

Answer 2

nowadays: this principle is not used daily, it is used only in cases of bad oral hygiene

Question 3

3. Nomenclature of cavity preparation
   => Identify

Answer 3

Question 4

3. Nomenclature of cavity preparation
   a/ Characteristics of WALL

Answer 4

Prepared part
-> named after the surface

Question 5

3. Nomenclature of cavity preparation
   b/ Characteristics of SURFACE

Answer 5

unprepared path

Question 6

3. Nomenclature of cavity preparation
   c/ Characteristics of LINE ANGLE

Answer 6

Junction of 2 walls
-> named after the walls

Question 7

3. Nomenclature of cavity preparation
   d/ Characteristics of POINT ANGLE

Answer 7

Junction of 3 walls
-> named after the walls

Question 8

3. Nomenclature of cavity preparation
   e/ What is cavosurface angle? (aka cavosurface margin)

Answer 8

Junction of wall and surface