| 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 |
