part - clinical dentistry

Question 1

what are matrix bands and wedges

Answer 1

matrix band - thin, flexible stainless teel amterial used for placement of amalgam

wedge - a wooden or plastic device placed in embrasure to provide contoues needed

Question 2

types of burs

Answer 2

• round bur ( 1/4, 1/2, 1-8, 10 for initial entry)
• inverted cone
• straight fissure plain cute - 55-60, 57L, 58L initial entry
• straight fissure cross cut - 556-560, 567L, 568L
• tapered fissure plain cute
• tapered fissure cross cut
• pear - initial entry
• end cutting - initial entry

diamon rotary

finishing

abrasive

Question 3

clock positioning

Answer 3

12-2 static zone
2-4 assistants zone
4-7 transfer zone
7-12 operators zonr

Question 4

instrument grasps

Answer 4

• pen
• palm grasp
• palm thumb
• thumb to nose

Question 5

hve positioning

Answer 5

• place in mouth before dentist is in position
• bevel of top is parallel to tooth surface
• edge is slightly above incisal or occlusal edge

Question 6

details of low speed handpiece motor

Answer 6

5000-30,000 rpm
- straight (lab)
- contra angle
- prophy
- latch type

Question 7

details of highspeed

Answer 7

200,000 - 400,000 rpm
- needs water
- friction grip

Question 8

details for lab handpiece

Answer 8

has greater torque

Question 9

details of ultrasonic handpiece

Answer 9

used for scaling and root planing

Question 10

details of laser handpiece

Answer 10

cuts and vaporizes tissue

Question 11

air abrasion handpiece

Answer 11

removes enamel, dentin and restorative materials

Question 12

details for surgical handpieces

Answer 12

has its own saline solution

Question 13

types of handpieces and rotary instruments

Answer 13

• low speed
• highspeed
• lab
• ultrasonic
• laser
  -air abrsion
• implant
• endo
• surgical

Question 14

what type of burs are used on low speed handpieces and highspeed

Answer 14

low speed uses latch type

highspeed uses friction grip