Restorative

Front 1

Define Cavosurface Margin

Back 1

The line that is formed by the junction of a cavity wall and the external surface of the tooth

Front 2

Define Cavity Wall

Back 2

The surfaces within the cavity preparation, the wall takes the name of the suface of the tooth adjoining the surface involved

Front 3

Define Pulpal Wall (floor)

Back 3

Wall that is occlusal to pulp and in a plane prependicular to the long axis of the ooth. There are no pulpal walls on Class III, IV, or V (horizontal plane)

Front 4

Define Sub-Pulpal Wall (floor)

Back 4

In a tooth from which the pulp has been removed and cavity extends to floor of the pulp chamber. In a prepared cavity where a portion of the pulpal wall is below the major established pulpal wall.

Front 5

Define Axial Wall

Back 5

Wall that is parallel to long axis of the tooth. This wall along with the pulpal surround the pulp.

Front 6

Define Line Angle

Back 6

The junction of two wall along a line and is named for the joining surface

Front 7

Define Point angle

Back 7

The junction of 3 walls of a point and is named for the joining surfaces

Front 8

Define Gingival Floor (Wall)

Back 8

Wall that is perpendicular to axial wall and located most apically

Front 9

Proximal Cavity Wall

Back 9

Names the wall that has been cau away like in Class II prep. Below the pulpal floor in the "proximal step or box" (B proximal wall, L proxiamal wall)

Front 10

What is the 1st element of cavity design?

Back 10

Establish the outline form.
It is the form of the area of the tooth surface to be included, within the outline, or margin walls, of the prepared cavity.

Front 11

T or F. The outline form is the CAVOSURFACE MARGIN of the finished prep

Back 11

True

Front 12

What are the 3 fundamental principles that determine the outline form?

Back 12

1. Extension for Prevention
2. Enamel Walls Supported by Sound Dentin
3. Smooth and Flowing Curves of the Cavity Prep Margins

Front 13

What is "extension for prevention" principle that determine the ooutline form?

Back 13

Extending the margins of the cavity preparation into areas that are readily cleansed by the tongue, lips, cheek, saliva brushing and chewing. This prevents recurrent decay.

Front 14

What is "enamel walls supported by sound dentin" principle that determine the outline form?

Back 14

The walls of the cavity prep must be extended until sound dentin is reached because enamel is brittle.

Front 15

T or F. Some enamel is not supported by sound dentin

Back 15

False

Front 16

Whst is "smooth and flowing curves of the cavity prep" about?

Back 16

In order to finish the margins, we need the margins to be smooth and flowing. It is impossible to finish the margins of a jagged outline

Front 17

What is the second element of cavity design?

Back 17

Obtaining the required resistance & retention form

Front 18

In resistance and retention form, what is resistance for?

Back 18

This form allows the future restoration to withstand the forces and stresses of bite. Ex: utilize a box shape with a flat pulpal wall. This provides the bulk necessary for strength.

Front 19

What is the "retention form" or the resitance and retention form from the 2nd element of a cavity design?

Back 19

Thisis needed to hold the restoration in place against the pull of sticky foods and cheweing forces. Ex: a dove tail is a widened or fanned out portion of a prepared cavity to increase retention form.

Front 20

What is the 3rd element of cavity design?

Back 20

Obtaining the required convenience form or access form

Front 21

What is the Convenience form of the elements of cavity design about?

Back 21

This form is obtained by moderate extension of the cavity walls. This is sometimes necessary because the original walls of the cavity do not permit the space and access necessary to carry out the restorative procedures.

Front 22

What is setp 4 in elements of cavity design?

Back 22

Removal of carious dentin

Front 23

What is the 4th stage of cavity design all about?

Back 23

If carious dentin is still present after the 1st three stages, it must be completely removed at this stage.

Front 24

T or F. Removal of carious dentin is done by a round bur only.

Back 24

False, it can also be done by a spoon excavator

Front 25

What is step 5 of elements of cavity design? What is it's purpose?

Back 25

Finishing the enamel walls. The enamel walls must be made up of full length enamel rods suppoerted by sound dentin.

Front 26

Enamel walls are finished by first _ the enamel. Any remainng irregularities are removed by ___ the enamel walls with a sharp hand instrument.

Back 26

Cleaving, Planing

Front 27

Which instruments can be used in cleaving the enamel?

Back 27

a fissure bur or and sharp hand instrument, such as the enamel hatchet.

Front 28

What is the weakest part of the enamel?

Back 28

The cementing substance that holds the rods together.

Front 29

T or F. The goal of cleaving the enamel is to assure a wall that is composed of full length enamel rods.

Back 29

True