Dental Dam And Tofflemire Retainer

Question 1

What is a dental dam

Answer 1

Away or method to isolate teeth that are going to be restored. Can be used on almost any patient. Applied by the dentist hygienist or dental assistant after the patient has had anesthesia

Check for latex allergies

Question 2

Characteristics of a dental dam frame

Answer 2

Can be plastic or metal
U-shaped- U frame
Ostby frame- oval shaped frame
Used to hold the dental dam material

Question 3

Factors to consider when punching the dental dam

Answer 3

Arch shape, teeth to be isolated, identify the anchor tooth and location of holes.
Size and spacing of holes (leave 3 to 3 1/2 mm of space between each punch)

Maxillary colon punch 1 inch from the top of the dam
Mandibular: punch 2 inches from the lower edge of the dam

Question 4

Parts of the dental clamp

Answer 4

Bow: rounded portion, extends through the dam material and is always toward the distal

Jaws: shaped into four prongs and must be secure on the tooth.

Damn forceps fit into the forceps holes and allow for placement and removal of clamp

Question 5

What are the dental dam clamps made of and what do they do

Answer 5

-Made of nickel plated steel or chrome
It is the anchor and stabilizes the dam
-The anchor tooth is usually one tooth distal to the tooth being restored
-can either be winged or wingless

Always tie a piece of floss to it for safety so the patient does not swallow it if it pops off

Question 6

What is the matrix band

Answer 6

Metal or plastic band that provides and takes the place of the proximal tooth surface that was removed. It will restore the proximal contours and contact to their normal shape and function

Can be called band or retainer

Question 7

What is the tofflemire retainer

Answer 7

Device that holds the matrix band in position

Question 8

What are the components of the tofflemire retainer

Answer 8

Outer knob
Inner knob
Spindle
Diagonal slot
Guide slots

Question 9

What are matrix Band maid of

Answer 9

Flexible stainless steel and are available in premolar, molar, and universal sizes and thicknesses

Question 10

Which part of the matrix band Is placed toward the gingiva

Answer 10

The smaller circumference of the band is the gingival edge and is always placed toward the gingiva

Larger end is called the occlusal edge

Question 11

What is a wedge

Answer 11

Either triangular or around and made of wood or plastic
Inserted into the lingual embrasure to position the matrix band firmly against the gingival margin of the prep

Helps with overhangs

Question 12

What is an auto metric system

Answer 12

Alternative to a universal retainer. No retainer is used to hold the band in place, they are already formed into circles in assorted sizes And have a coil like auto lock loop that is tightened with a wrench

Question 13

What is a T band

Answer 13

T-shaped copper band used on primary teeth. One formed, the top portion of the T allows the straight portion to adjust and fit the circumference of the primary molar

Question 14

What is a plastic matrix

Answer 14

Also referred to as a celluloid matrix or mylar strip. Used with composite resin‘s or glass ionomer materials for class three and four restorations in which the proximal wall of an anterior tooth is missing

Question 15

When is a clear matrix placed

Answer 15

Placed enter proximally before the etching and priming of a tooth. Protects adjacent teeth from the etching materials

Question 16

How does the clear matrix work and what is the benefit

Answer 16

After placement of the composite material the matrix is pulled tightly around the tooth to help reconstruct the natural contour

The clear plastic allows the curing light to penetrate the material and complete the curing process