Quiz 1 Material

Question 1

Blacks 6 Steps

Answer 1

1. Outline
2. Resistance & Retention Form
3. Convenience
4. Remove Remaining Decay
5. Smooth Enamel Walls
6. Cleanse the Preparation

Question 2

Class I Preparation

Answer 2

Pits and Tissues of all teeth

Question 3

Class II Preparation

Answer 3

Approximal surface of POSTERIOR teeth
MO, MOL, MOB, MOD, MODB, MOBL etc
DO, DOL, DOB, DOBL

Question 4

Class III Preparation

Answer 4

Approximal surface of ANTERIOR teeth
M, D, ML, MF, DF, DL, DFL, etc
NO INCISAL EDGE

Question 5

Class IV Preparation

Answer 5

Approximal surface PLUS incisor angle of ANTERIOR teeth

MI, DI, MFI, DFI, MLI, MID, etc

Question 6

Class V Preparation

Answer 6

Gingival Third of the FACIAL OR LINGUAL of ANY tooth!!!

Question 7

Class VI Preparation

Answer 7

Cusp tips of POSTERIOR teeth, incisor edges of anterior teeth
O (posterior teeth)
I (anterior teeth)

Question 8

Outline Form

Answer 8

Shape/outline of the cavity preparation as it meets the external surface of the tooth.
Based on location and extent of carious lesion.
Keep plural floor at .5mm

Question 9

Enameloplasty

Answer 9

when pit/groove doesn’t penetrate to any great depth into the enamel and doesn’t allow for proper tooth prep margins.
Does not extend outline form
buffing out a scratch on a car?

Question 10

Outline Form Rules

Answer 10

1. Extend prep margin until sound tooth structure is obtained; no unsupported enamel remains
2. Preserve cusp strength
3. Avoid terminating margins on extreme eminences like cusp heights or ridge crests. (don’t go into cusps?)
4. Extend to include all fissures that can’t be eliminated by appropriate enameloplasty.
5. Restrict plural depth to .5 mm into dentin
6. When 2 pit/fissure preps with less than 1mm tooth structure between them make it into one big prep.

Question 11

Resistance Form

Answer 11

Tooth and restoration must have resistance to fracture during mastication.
Resistance to fracturing for both tooth and material

Question 12

Retention Form

Answer 12

Mechanical shaping of the preparation to retain the restoration.
Don’t want the material to fall out

Question 13

Resistance Form Principles

Answer 13

1. Use box shape with flat plural floor
2. Restrict extension of external walls
3. Slight rounding of internal line angels (reduces stress)
4. Provide thickness of restorative material (amgalam 1.5mm)
5. Include weakened tooth structure in the preparation to prevent future fracture.

Question 14

Retention Form Principles

Answer 14

1. External tooth walls converge occlusally
2. Grooves
3. Adhesive systems
4. Occlusal dovetails
5. Pins

Question 15

Convenience Form

Answer 15

Shape/form of prep that provides for observation, accessibility, and east of operation in prepping and restoring the tooth.
Does your condenser fit?

Question 16

Removal of Remaining Decay

Answer 16

Obvious.
When plural or axial wall has been established at proper tooth prep position and a small amount of carrie sits deeper, only remove this material (don’t extend the entire plural floor, just make a small hole)

Question 17

Infected vs Affected dentin

Answer 17

Infected: bacterial invasion has occurred, must be removed
Affected: decalcification preceding penetration of microorganisms. Can remain!!