Different Designs of Class V Cavity Preparations
Explore the various designs of Class V cavity preparations, specifically focusing on those for amalgam restoration. Learn about the factors affecting outline form for Class V amalgam tooth preparation, including height of contour and position of the gingival margin.
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Different Designs of Class V Cavity Preparations
Quiz • 23 Questions
Study Notes
2 min • Summary
Different Designs of Class V Cavity Preparations - Podcast
Podcast
Materials
List of Questions23 questions
- Question 1
- To enhance retention of the restoration
- To improve moisture tolerance
- To eliminate the need for enamel margins
- To create a smoother surface margin
- Question 2
- They are rarely necessary due to decreased salivary function
- They are rarely necessary due to improved moisture tolerance of the materials used
- They are rarely necessary due to the presence of enamel margins for etching and bonding
- They are rarely necessary due to increased retention provided by other features of the preparation
- Question 3
- If the tooth is medically compromised and needs a cariostatic effect
- If patient motivation is decreased and enamel margins cannot be prepared
- If the cavity is extended onto the root and there is no enamel margin for etching and bonding
- If moisture control is impossible due to decreased salivary function
- Question 4
- Because RMGI does not require cavosurface bevels and offers retention rates of 93%
- Because RMGI is best served on root surfaces
- Because RMGI offers high fluoride release and excellent recharge capacity
- Due to improved moisture tolerance, polyacid-modified composites may be an appropriate choice
- Question 5
- Egg-shaped bur
- No.1/4 round bur
- Round diamond bur
- Carbide bur
- Question 6
- 1 mm
- 0.75 mm
- 1.25 mm
- 0.5 mm
- Question 7
- Gingival aspect
- Mesial aspect
- Distal aspect
- Incisal aspect
- Question 8
- Carbide bur
- Egg-shaped bur
- Round diamond bur
- No.1/4 round bur
- Question 9
- To prepare 90-degree Cavo surface margins
- To incorporate secondary retentive features
- To eliminate the entire enamel lesion or defect
- To extend into dentin only when necessary
- Question 10
- Preparation of butt joints
- Incorporation of secondary retentive features
- Selective carious tissue removal
- Beveling
- Question 11
- 'Kidney bean' concave-shaped tooth design with axial depth on the same level
- Divergent wall configuration and uniform axial surface depth
- 'Kidney bean' concave-shaped tooth design below the height of the contour with bevel on all walls
- Butt joint walls and non-uniform axial surface depth
- Question 12
- Esthetics
- Height of contour
- Position of the gingival margin
- Position of line angles
- Question 13
- 1.5mm inside DEJ
- 1.75mm total axial depth
- 2mm inside cementum
- 1mm total axial depth
- Question 14
- Tapered fissure bur
- Spherical bur
- Appropriate carbide bur
- Round bur
- Question 15
- Occlusal and incisal surfaces
- Cervical and root surfaces
- Facial and lingual surfaces
- Mesial and distal surfaces
- Question 16
- No. 5
- No. 4
- No. 271
- No. 2
- Question 17
- Enamel
- Cementum
- Pulp
- Dentin
- Question 18
- 1.5mm
- 2mm
- 1mm
- 0.5mm
- Question 19
- Height of contour
- Position of the gingival margin
- Position of line angles
- Esthetics
- Question 20
- Round bur
- Spherical bur
- Tapered fissure bur
- Appropriate carbide bur
- Question 21
- 2mm total axial depth
- 1 to 1.25mm total axial depth
- 1mm
- 0.75mm inside cementum
- Question 22
- Esthetics
- Position of line angles
- Position of the gingival margin
- Height of contour
- Question 23
- 1mm total axial depth
- 1 to 1.25mm total axial depth
- 0.75mm
- 0.5mm