36. Non-surgical therapy - technique of instrumentation in debridement.

Question 1

Non-surgical therapy - technique of instrumentation in debridement.

Scaling

Answer 1

• Procedure that aims to remove plaque and calculus from tooth surface
• Supra and or subgingival instrumentation

Question 2

Non-surgical therapy - technique of instrumentation in debridement.

Two stages of debridement

Answer 2

• Root scaling
• Root planning

Question 3

Non-surgical therapy - technique of instrumentation in debridement.

Root scaling

Answer 3

• Removal of soft and hard deposits on the root
• Can be done with hand and ultrasonic instruments

Question 4

Non-surgical therapy - technique of instrumentation in debridement.

Root planning

Answer 4

Removal of necrotic cementum and dentine to achieve smooth root

Question 5

Non-surgical therapy - technique of instrumentation in debridement.

Optimal angle between cutting edge of curette and tooth

Answer 5

80 degrees

Question 6

Non-surgical therapy - technique of instrumentation in debridement.

Obtuse angle when using curette

Answer 6

Cratering and roughening of root surface

Question 7

Non-surgical therapy - technique of instrumentation in debridement.

Acute angle when using curette

Answer 7

Ineffective removal and burnishing of subgingival calculus deposits

Question 8

Non-surgical therapy - technique of instrumentation in debridement.

Angle between face and back of curettes when sharpening

Answer 8

70%

Greater angle->dulling
-More acute angle->fragile and easily worn cutting edge

Question 9

Non-surgical therapy - technique of instrumentation in debridement.

Procedure for use of curette

Answer 9

• LA
• Check root surface w/ probe
• Instrument held in modified pen grasp and inserred into pocket
• On insertion- face of blade parallel to and in light contact with root surface
• Proper finger rest(fulcrum)
• After insertion to base of pocket-instrument turned to cutting position(shank parallel to long axis of root)
• Blade moved in coronal direction
• Probe inserted again to check for calculus

Question 10

Non-surgical therapy - technique of instrumentation in debridement.

Purpose of exploring root surface

Answer 10

• Probing depth
• Anatomy of root surfacce(irregularities, root furrows, open furcations)
• Location of calcified deposits

Question 11

Non-surgical therapy - technique of instrumentation in debridement.

Why fulcrum is important

Answer 11

• Enables correct angulation of blade and stability