Restorative - Obj 5 - Week 3 PP

Question 1

Black’s Classification

Answer 1

The standard classification system for notating carious lesions is the Black’s Classification System

Question 2

Sharps and Needle Stick Injury Protocols

Answer 2

1) Sharps and Needle Stick Injuries
i) Wash the injured area with soap and water.

ii) Allow the injury or wound to bleed freely and then cover to prevent further exposures.

iii) DO NOT attempt to squeeze the wound, as this may increase the risk of exposure.

iv) Avoid the use of alcohol, hydrogen peroxide, bleach or other chemical cleansers such as antiseptics.

2. The injured person shall obtain assistance from the work area’s certified first aid provider if available and apply a band aid from the first aid kit.
3. The injured person shall notify the immediate supervisor of the injury.
4. The supervisor shall arrange for transportation of the injured person to receive immediate medical attention. Sharps/needle stick injuries require professional medical attention within two hours.
5. Upon discovery of a sharp, Security or the janitorial service must ensure the sharp is retained for identification by Safety and Community Services for proper disposal.
6. The injured person’s supervisor shall promptly complete a SAIT Incident Report form with the injured person’s assistance, and shall promptly submit that form.
7. The supervisor shall contact Safety and Community Services at 403.284.7072 or at hsw.incidents@sait.ca) for prompt investigation.

Question 3

How many classifications of caries/cavities?

Answer 3

We have six classifications
* Cavities are classified by surfaces involved
* Example: MO, MOD, MODBL

Question 4

Class 1 Lesions

Answer 4

Occurs on pits and/or fissures, can also appear on the buccal or lingual
Example: 4.5 occlusal pit , 4.6 occlusal pit, 11 lingual pit

Question 5

Class 2 Lesions

Answer 5

Occurs on the posterior teeth only, involves the interproximal surface
The following surfaces are involved:
◦ Two-surface restoration of posterior teeth
◦ Three-surface restoration of posterior teeth
◦ Multi-surface, four-surface (or more) restoration of posterior teeth ex. MOD, MODB

Question 6

Class 3 Lesions

Answer 6

Anterior teeth only and involve a interproximal surface only
Example: 1.1M, 1.2D, 3.3M

Question 7

Class 4 Lesions

Answer 7

Interproximal surface and Incisal edge of anterior teeth only
Example: 1.1 MIL, 1.2 DIL

Question 8

Class 5 Lesions

Answer 8

Gingival third of lingual or buccal (facial) surface on any tooth
Example: 1.1F or 1.1B, 1.2F or 1.2 B or 1.2L

Question 9

Class 6 Lesions

Answer 9

Physical or chemical wear on the incisal or occlusal edge, on any tooth
Example: 4.6 pit wear, 2.5 cusp wear

Question 10

Primary Caries

Answer 10

• Occur on unrestored teeth

Question 11

Recurrent or Secondary caries

Answer 11

• Occur around restorations: require
  replacement

Question 12

Rampant caries

Answer 12

• Widespread areas of caries occurring
  simultaneously

Question 13

Simple Carious Lesions

Answer 13

• involves only 1 tooth surface
  ex: 4.6 O or 3.5 B

Question 14

Compound Carious Lesions

Answer 14

• involves 2 tooth surfaces ex:
  4.5 MO or 4.6 DO

Question 15

Complex Carious Lesions

Answer 15

• involves 3 or more tooth
  surfaces ex: 4.7 MOD or 2.1 MIL

Question 16

When preparing a tooth for a permanent
restoration, the dentist has the acquired knowledge about…

Answer 16

• The direction of the enamel rods
• The thickness of the enamel
• The body of the dentin
• The size and position of the pulp
• The crown of the tooth as it relates to the
  gingival tissues

Question 17

Cavity Preparation

Answer 17

Cavity preparation is the process of
removing diseased tooth structure

Initial preparation
* high speed handpiece
Final preparation
* slow speed handpiece and hand
cutting instruments

Question 18

Initial cavity preparation steps: outline form

Answer 18

• Design and initial depth of sound tooth
  structure
• Overall size/shape of the restoration
• Related to the size of the tooth
• Amount of decay

Question 19

Initial cavity preparation steps: Resistance form

Answer 19

The primary shape and placement of the cavity walls is determined

Question 20

initial cavity preparation steps: Convenience form

Answer 20

Describes modifications necessary to enable proper
instrumentation (size)
Accessibility in preparing and restoring the tooth

Question 21

initial cavity preparation steps: Retention form

Answer 21

Designed to prevent the tooth and the restoration
from fracturing from biting forces

Question 22

Final cavity preparation includes the following:

Answer 22

• Removing any enamel, diseased dentin or old restorative material (or a combination)
• Inserting additional resistance and retention. notches, grooves, and coves
• Placing protective dental materials (lining agents, bases, desensitizing, or bonding agents)