Restorative - Week 3 PP Flashcards
Black’s Classification
The standard classification system for notating carious lesions is the Black’s Classification System
Sharps and Needle Stick Injury Protocols
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.
- 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.
- The injured person shall notify the immediate supervisor of the injury.
- 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.
- 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.
- 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.
- The supervisor shall contact Safety and Community Services at 403.284.7072 or at hsw.incidents@sait.ca) for prompt investigation.
How many classifications of caries/cavities?
We have six classifications
* Cavities are classified by surfaces involved
* Example: MO, MOD, MODBL
Class 1 Lesions
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
Class 2 Lesions
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
Class 3 Lesions
Anterior teeth only and involve a interproximal surface only
Example: 1.1M, 1.2D, 3.3M
Class 4 Lesions
Interproximal surface and Incisal edge of anterior teeth only
Example: 1.1 MIL, 1.2 DIL
Class 5 Lesions
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
Class 6 Lesions
Physical or chemical wear on the incisal or occlusal edge, on any tooth
Example: 4.6 pit wear, 2.5 cusp wear
Primary Caries
- Occur on unrestored teeth
Recurrent or Secondary caries
- Occur around restorations: require
replacement
Rampant caries
- Widespread areas of caries occurring
simultaneously
Simple Carious Lesions
- involves only 1 tooth surface
ex: 4.6 O or 3.5 B
Compound Carious Lesions
- involves 2 tooth surfaces ex:
4.5 MO or 4.6 DO
Complex Carious Lesions
- involves 3 or more tooth
surfaces ex: 4.7 MOD or 2.1 MIL
When preparing a tooth for a permanent
restoration, the dentist has the acquired knowledge about…
- 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
Cavity Preparation
Cavity preparation is the process of
removing diseased tooth structure
Initial preparation
* high speed handpiece
Final preparation
* slow speed handpiece and hand
cutting instruments
Initial cavity preparation steps: outline form
- Design and initial depth of sound tooth
structure - Overall size/shape of the restoration
- Related to the size of the tooth
- Amount of decay
Initial cavity preparation steps: Resistance form
The primary shape and placement of the cavity walls is determined
initial cavity preparation steps: Convenience form
Describes modifications necessary to enable proper
instrumentation (size)
Accessibility in preparing and restoring the tooth
initial cavity preparation steps: Retention form
Designed to prevent the tooth and the restoration
from fracturing from biting forces
Final cavity preparation includes the following:
- 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)
