1 Mechanized Instrumentation 2 ENERGY What it is Where it comes from Where it goes What it does.

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Mechanized Instrumentation

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ENERGY

• What it is • Where it comes from• Where it goes• What it does

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What counteracts the heat?

• light touch• constant motion

• water lavage

never operate sonics or

ultrasonics without water!

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Sonic and Ultrasonic Instrumentation

Refer to Dentsply CD Course…

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Physical Properties for Sonics and Ultrasonics

Electronically powered devices that produce vibratory motions to fracture deposits from the tooth surface.

“cavitation”

heat productionwater lavage

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Advantages of ultrasonic debridement

• reduced working time• Patient comfort and safety• improved operator comfort• Histological comparisons• therapeutic effects

– Antimicrobial lavage– Effect on microflora

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Limitations of ultrasonic debridement

• Less tactile sensitivity

• Contaminated aerosols

• Reduced visibility (indirect vision)

• Potential to gouge root and tooth surface if improperly used

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Cautions and Contraindications

• Pacemakers• Communicable diseases• Young children• Sensitive teeth - recession• Gaggers• Decalcification and tooth brush

abrasion• Implants

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Sonic instrumentation

•portable• less expensive•no separate hookups

required•efficient

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Ultrasonic Instrumentation

• more vibrations per second• more tip selection• lighter handpiece• separate

water/medicament source• not as likely to walk away...

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Technique

• Fulcrum• Position of tip• Pressure - feather touch (10

grams)• Stroke

– overlapping “crosshatch”– constant motion

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Ultrasonic InsertsStreamline® Designs

#10 UniversalGeneral Debridement

#1000 Triple BendHeavy Debridement

#100 ThinLight

Debridement

#3 BeavertailHeavy Debridement

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Tips do not last forever…

• 1 mm of tip wear = 25% loss of efficiency

• 2 mm of tip wear = 50% loss of efficiency

*Slim-line tips are particularly prone to breakage.

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How old is this insert?

DENTSPLY 0106 30K FSI-SLI-10L

Month manufactured

Year manufactured

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If it hurts…

You are doing it

–THE WRONG WAY

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Proceed to Hu-Friedy

Ultrasonic Insert Slides…