G. Mod. 4 Use Of Dental Mouth Mirror

Question 1

Types of mirror surfaces

Answer 1

Front surface
Concave
Plane

Question 2

Front surface mirror

Answer 2

Most common
Clear image
Reflecting surface is easily scratched

Question 3

Concave mirror surface

Answer 3

Reflecting surface is on front surface of mirror
Produces a magnified image
Magnification distorts image
(Not recommended)

Question 4

Plane (flat surface)

Answer 4

Reflects on back of mirror lens-resists scratching
Produces a double image (ghost)
(Not recommended)

Question 5

Extra oral fulcrum

Answer 5

Stabilize outside of mouth

Either on pts chin or cheek

Question 6

Intraoral fulcrum

Answer 6

Stabilizing point inside mouth
Optimal with mirror but recommended when instrumenting

Question 7

Functions of dental mirror

Answer 7

1. Indirect vision
2. Retraction
3. Indirect illumination
   -reflect light onto tooth or soft tissue (posterior)
4. Trans illumination
   -directing light though anterior teeth
   -looking at teeth not mirrors surface