10 Questions
What is slot preparation primarily designed for?
Proximal caries
What is designed when caries is located underneath the interproximal contact during slot preparation?
Box shape
Class II cavity is entered through the occlusal surface using a small rotatory instrument to find the ________.
caries
When caries approaches the gingival margin in Class II cavity, the subgingival protocol should be employed.
False
Match the following bur types with their usage:
Very small-diameter flame bur = Conservative opening of suspect grooves Cylindric bur with rounded head = Most Class 1 and 2 cavity preparations Tungsten carbide rosehead bur = Removal of infected dentin Fine-grained flame bur = Finish Class 2 box walls Arkansas stone = Smooth the cavity margin Brownie polisher = Polish the cavity margin
What is another term used for slot preparation for proximal caries?
Microscopic preparation
When caries is located underneath the interproximal contact, carious tissue is approached from the ________ surface.
buccal
Class III cavity preparation is typically initiated from a lingual approach.
True
What is the purpose of using a wedge guard or a metal matrix when breaking the proximal wall during cavity preparation?
protect the adjacent tooth
Match the following essential burs with their recommended usage:
Very small-diameter flame bur (FG; 006–008) = Conservative opening of suspect grooves Cylindric bur with rounded head (FG; 007–0014) = Most Class 1 and 2 cavity preparations Tungsten carbide rosehead bur (CA; 010–020) = Removal of infected dentin Fine-grained flame bur (FG; 010) = Finishing Class 2 box walls Arkansas stone (FG) = Smoothing cavity margin Brownie polisher (CA) = Polishing cavity margin
Study Notes
Proximal Caries in Posterior and Anterior Teeth
Tunnel Preparation
- Used for proximal caries
- Can be divided into cases:
- Caries close to the marginal ridge and cannot preserve its integrity or the marginal ridge has been destroyed
- Caries located underneath the interproximal contact
Slot Preparation
- Designed mainly for proximal caries
- Approached from the buccal or lingual surface
- Prepared into a box or disk shape with groove retention
Microscopic Preparation
- Not mentioned in the text
Class II Cavity
- Enter the tooth through the occlusal surface using a small rotatory instrument
- Maintain a small external outline while attempting to remove the occlusal and proximal caries
- Decalcified enamel must be removed, as well as any old restorative material
- Use a caries finder for 10 seconds, and rinse
- Remove caries until all infected dentin has been removed
- Protect the adjacent tooth using a wedge guard or metal matrix
- A lack of proximal clearance may make it difficult to insert a matrix band
Restoration of Proximal Caries
- Remove the sharp external cavosurface margin throughout, to remove loose enamel rods and enhance adhesion using a flame diamond
- Essential burs:
- Very small-diameter flame bur (FG; 006–008)
- Cylindric bur with rounded head (FG; 007–0014)
- Tungsten carbide rosehead bur (CA; 010–020)
- Fine-grained flame bur (FG; 010)
- Arkansas stone (FG)
- Brownie polisher (CA)
Matrix Systems
- Tofflemire
- Sectional Matrix
- Omni-Matrix
- Transaparent matrix
- Auto-Matrix
- Palodent 360
- Wedges:
- Wooden wedges
- Plastic Wedges
- Expansion wedges
Proximal Caries in Anterior Teeth
- General steps:
- Anaesthesia
- Occlusal assessments
- Shade selection
- Isolation
- Wedge insertion (if the restoration involves the proximal contact)
- Class III preparation:
- Initiated from a lingual approach using a round bur instrument
- Point of entry located within the incisogingival dimension of the lesion
- Cutting instrument directed perpendicular to the enamel
- Bevel and proximal anatomy creation using composite and mylar strip
- Finishing and polishing steps using finishing strips and a No. 12 surgical blade or scaler
Proximal Caries in Posterior and Anterior Teeth
Tunnel Preparation
- Used for proximal caries
- Can be divided into cases:
- Caries close to the marginal ridge and cannot preserve its integrity or the marginal ridge has been destroyed
- Caries located underneath the interproximal contact
Slot Preparation
- Designed mainly for proximal caries
- Approached from the buccal or lingual surface
- Prepared into a box or disk shape with groove retention
Microscopic Preparation
- Not mentioned in the text
Class II Cavity
- Enter the tooth through the occlusal surface using a small rotatory instrument
- Maintain a small external outline while attempting to remove the occlusal and proximal caries
- Decalcified enamel must be removed, as well as any old restorative material
- Use a caries finder for 10 seconds, and rinse
- Remove caries until all infected dentin has been removed
- Protect the adjacent tooth using a wedge guard or metal matrix
- A lack of proximal clearance may make it difficult to insert a matrix band
Restoration of Proximal Caries
- Remove the sharp external cavosurface margin throughout, to remove loose enamel rods and enhance adhesion using a flame diamond
- Essential burs:
- Very small-diameter flame bur (FG; 006–008)
- Cylindric bur with rounded head (FG; 007–0014)
- Tungsten carbide rosehead bur (CA; 010–020)
- Fine-grained flame bur (FG; 010)
- Arkansas stone (FG)
- Brownie polisher (CA)
Matrix Systems
- Tofflemire
- Sectional Matrix
- Omni-Matrix
- Transaparent matrix
- Auto-Matrix
- Palodent 360
- Wedges:
- Wooden wedges
- Plastic Wedges
- Expansion wedges
Proximal Caries in Anterior Teeth
- General steps:
- Anaesthesia
- Occlusal assessments
- Shade selection
- Isolation
- Wedge insertion (if the restoration involves the proximal contact)
- Class III preparation:
- Initiated from a lingual approach using a round bur instrument
- Point of entry located within the incisogingival dimension of the lesion
- Cutting instrument directed perpendicular to the enamel
- Bevel and proximal anatomy creation using composite and mylar strip
- Finishing and polishing steps using finishing strips and a No. 12 surgical blade or scaler
This quiz covers the treatment of proximal caries in posterior and anterior teeth, including resin infiltration and preparation methods such as tunnel and slot preparation. It is based on a 7-year follow-up study on noncavitated proximal caries.
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