AIR ABRASION 2

AIR ABRASION
ADVANTAGE

Pain during tooth structure removal is eliminated or at least reduced.

No vibration occurs during Air abrasion procedure

The only noise produced by Air abrasion is a familiar vacuum cleaner sound.

Well-designed tips provide good control during the procedure.

Patients who are afraid of traditional dentist techniques and the noise of airrotor handpieces can be treated, without anesthesia, using air abrasion.

It adapts well to Class I, IV and V preparations.

It is an especially useful technique for children.

Used properly, air abrasion "explores" incipient carious lesions extremely well, often locating carious areas previously undetectable visually or by radiography.

DISADVANTAGE

Air abrasion technique is not familiar,period to accustom themselves so dentists require a learning to it.

Tooth preparations do not resemble traditional, precise, clearly identifiable outlines.

The practitioner's tactile perception during tooth structure removal is minimal.

At this time, only small tooth preparations can be accomplished with the Air abrasion technique.

Expertise is required to control it by proper direction of the Air abrasion handpiece tip, excellent suction and, potentially, by use of air filtration devices.

The practitioner's vision is sometimes obscured by debris while tooth structure is being removed.

Performing air abrasion on Class II and III areas requires more extensive learning than that required for using the technique on other tooth locations.

Old amalgam cannot be removed produce mercury dust.

It doesnot remove soft decay bcoz the particles are absorbed to remove the soft decay one should use slow hand piece with no.2 or no.4 round bur or sharp spoon

Crown preparations are not possible with Air abrasion .

Aluminum oxide debris accumulates everywhere.

AIR ABRASION - MINIMALLY INVASIVE TECHNIQUE

AIR ABRASION

Air abrasion is introduced by Dr.Robert.B.Black.

It is a parallel stream of focused narrow beam of 27 micron size of aluminium oxide.

The particle move according to law of physics .

When directed towards tooth surface it abrade with out heat, vibration,and noise.

Air abrasion conserve the tooth structure and maintains the structural integrity of the tooth.

It requires moderate learning curve and one should feel confident in using it.

There is no tactile sensation because the Air abrasion hand piece doesnt touch the tooth,and the cutting article exit at the it.

It is a end cutting device incontrast to rotary it cuts laterally.

MODES OF USES
Air abrasion handpiece can used in Two modes

Focused and unfocused mode.

Focused mode - 1-2 mm away from the tooth structure,it cuts enamel and dentine.

Defocused mode - farther away,it cleans the surface,explores the caries.

LAW OS PHYSICS

ENERGY(E) = 1/2 MASS x VELOCITY

Kinetic energy can be increased by increasing mass and velocity.

kinetic energy decreases with increase in tip distance.

INDICATIONS

Children, unaccustomed to traditional rotary-instrument tooth cutting, can be introduced to Air abrasion dentistry without psychological trauma.

Patients who cannot have local anesthesia because of various health reasons can be treated using air-abrasion techniques.

Patients who are afraid of traditional dentistry techniques and the noise of airotor handpieces can be treated.

CONTRAINDICATIONS

Asthma

Dust allergy

Periodontal disease

Recent extraction sites