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BASIC CHAIRSIDE
INSTRUMENTS AND TRAY SYSTEMS
Question | Answer |
---|---|
The working end may be | point,blade,or nib |
blade may be | flat or curved and rounded or cutting edge |
the cutting edge | is formed by a bevel on the working end of the instrument. |
the part of the dental hand instrument. | handle,shank,working end |
which part of the instrument actually performs the specific function of the instrument | working end |
formula was developed to standardize the exact size and angulation of an instrument | black's |
following are cutting instruments | chisel,excavator,angle former |
following are noncutting instruments | carver,carrier,file |
black's three number formula | -the first number is the width of the blade,-the second number is the measurement of length of blade,-third number provides measurement of angle of the blade to the long axis of the handle |
hand cutting instruments | are used to assist in the design of the cavity preparation |
chisels | are used to shape and plane enemal and dentin walls of the cavity preparation |
hatchet | are paired left and rigth and used in a downward motion to refine the cavity walls |
Hoe | is used in the a pulling motion and shape the floor of the cavity preparation |
gingival margin trimmer | is similar to the HATCHET in regard to the position of the position ofthe blade to the handle,is used to bevel the gingival margin wall of the cavity preparation |
angle former | is used in downward pushing motion to form and define point angles and to shapen line. |
excavator | is used to remove carious material,has a cutting edge that is rounded all the way |
basic | examination setup instruments are common to all tray setups |
basic examination setup instrument | mouth mirror,explorer,cotton plier |
type of mouth mirror | are the plane surface,front surface and concave surface |
what the operator use to view area of the mouth not visible with direct vision | indirect vision |
the mirror is used to direct the light to reflect and detect fractures in tooth | transillumination |
which instrument working end is thin,sharp pint of flexible steel | exporer |
cotton plier | are used to transport and manipulate various material,they are also available locking and nonlocking handles |
the probe | workin end consists of rounded or blunted blade that is marked in millimiters |
amalgam carrier | designed to carry and dispense amalgam into cavity preparation |
condensers | are used to remove excess restorative material and to carve tooth anatomy in the restoration |
knives are used to trim excess filling material is | finishing |
spatulas are used to mix composite resin material is? | plastic |
characteristic of crowns and collar scissors are | trim matrix,cut retraction cord,trim amalgam |
the neck of the bur is | inserted into the handpiece |
the head of the bur is | the working end of the bur |
cutting burs have | 6 cutting blades or surfaces |
there are | 9 basic cutting bur shapes |
Diamond burs or stones | are used for rapid reducing tooth structure during cavity preparation ,polishing and finishing composite restorations and occlusial |
abrasives | are nonbladed instruments used finish and polish restoration |
following instruments have abrasive material that may be made of garnet,diamond and quartz | discs |
diamond discs | are used for rapid cutting and have diamond particles bonded to both sides of steel discs. |
working end of the handpiece is | where burs,stones,and attachments are held |
following will reducefrictional heat from the use of the high speed | -air,water,air-water spray |
the chuck | holds the shank portion of the bur in place |
what will activate and control the speed of the handpiece | rheostat |
the low-speed handpiece is often called | straight handpiece |
at the dental unit,the low -speed handpiece will not | polish appliances |
which of the following cannot be sterilized | sandpaper discs |
high-speed handpieces operate at | 400,000 rpm |
preset tray | provides an efficient means of transportating instruments |
the wedelstaedt chisel | is used for class III or IV cavity preparation |
dental handpiece is used for | removing dental decay,polishing teeth,polishing and finishing restoration except probing |