Class 5 Composite Preps Flashcards
Define Class 5 Prep/Restoration
Caries/Restorations on gingival 1/3 of facial and lingual surfaces
Normally in esthetic areas
Durability can be compromised at root because of dentin bonding because it is less predictable: Prone to microgap/microleakage
5 Treatment options
- Prevention and Reversal
- Glass Ionomer Restoration
- Conservative Composite
- Conventional Composite
- Amalgam
When would you use something other than composite in a class 5?
- Decreased salivary flow
- Decreased patient hygiene (willingness)
- Increased operation difficulty
Clinical Techniques
- Anesthesia
- Shade Selection - Value, Chroma, Hue
- Isolate
Clinical Steps
- Create access to defect
- Remove Defect
- Create convenience form
Larger lesion = More important Retention
Hyper-mineralized dentin = Special Care
Enamel bevel @ occlusal margin
What are the 4 steps in the procedure
- Convenience Form
- Remove Defect - “Scooped out” - divergent wall, non uniform axial depth
- Finish Enamel margins
- Condition Cavity
T/F Box Form is used on real teeth
False: Box form is only used in plastic teeth. Creates shrinkage for composite resin
T/F Retention Grooves are only used in plastic teeth
True: On the gingival and incised wall
Enamel Bevel benefits
- Only done in composite restorations
- Thickness starts at the DEJ
- Improved Esthetics
- Possible Decreased micro leakage
Dentin is never beveled
T/F High Opacity = Dentin
True
T/F Low Opacity = Enamel
True
Composite over amalgam
- Esthetic Concerns
- Amalgam may be more destructive
- Adequate Isolation CAN be achieved
- Cost
Sandwich Technique
- Glass ionomer Chemical adhesion to dentin
2. Bond between resin modified glass ionomer and resin composite
Burs Used:
Round 1 and 2
Pearl 329 & 330
