Ultrasonic

Question 1

Scaling

Answer 1

removal of hard and soft deposits

Question 2

Root Planing

Answer 2

removal of diseased root surface to create a smooth, non-contaminated surface

Question 3

Periodontal Debridement

Answer 3

treatment of gingival/periodontal inflammation through the mechanical removal of irritants - returning soft tissue to a healthy state *to reduce the bioburden and produce biologically sound sulcular environment resulting in healing!

Question 4

Perio Debridement: Goals

Answer 4

1. disrupt/remove plaque 2. remove plaque retentive factors 3. conserve tooth structure 4. resolve inflammatin

Question 5

Plaque Retentive Factors

Answer 5

calculus, extrinsic stain, margins of restorations, ortho cement < uses for ultrasonic/power debridement

Question 6

Power Instruments: Categories

Answer 6

Sonic | Ultrasonic < magnetostrictive, piezoelectric

Question 7

Sonic Scaler

Answer 7

air turbine + compressed air, resembles scaler/curet, 3000-8000cps, elliptical

Question 8

Magnetostrictive Ultrasonic

Answer 8

converts electrical power through a magnetic field to activate tip. 30,000cps. all sides of tip active, oscillates.

Question 9

Piezoelectric Ultrasonic

Answer 9

converts electrical power to tip with ceramic crystals. 30k-50k cps, linear motion

Question 10

Mechanical Actions

Answer 10

manual = cut ; power = shatter

Question 11

Clinical Power

Answer 11

ability to remove deposits under load

Question 12

Load

Answer 12

resistance on an instrument tip when placed against a deposit

Question 13

Types of Deposits

Answer 13

plaque, stain, new light calc, old tenacious calc

Question 14

Frequency

Answer 14

measured in Cycles Per Second. affects active tip - - Magnetostrictive Tip = 4.3mm ; Piezoelectric Tip = 2-3mm

Question 15

Power

Answer 15

electrical energy in the handpeice that generates movement of tip. Low = shorter, lighter stroke ; High = longer, more powerful stroke

Question 16

Stroke

Answer 16

max distance the tips moves during one cycle

Question 17

Cavitation

Answer 17

imploding bubbles causing shockwaves killing bacteria

Question 18

Acoustic Microstreaming

Answer 18

low pressure one directional fluid flow

Question 19

Acoustic Turbulance

Answer 19

swirling fluid effect that increases as power increases

Question 20

Ultrasonic Implementation: Steps

Answer 20

1. supra gingival 2. sub gingival 3. deplaque

Question 21

Power Adaptation

Answer 21

0-15º, coronal to hard deposit