Stainless Steel Crown

Question 1

SSC Indications

Answer 1

• restore primary or perm teeth
  
  • w/extensive caries
  • hypoplastic
  • hereditary anomolies
    
    • dentinogenesis imperfecta
    • amelogenesis imperfecta
• restore primary teeth
  
  • after pulpotomy or pulpectomy
• poor oral hygiene and failure of other materials is likely
• Abutement for space maintainers or prosthetic appliance
• children who require GA for tx

Question 2

What bur? function?

Answer 2

• 909
• diamond wheel
• occlusal reduction

Question 3

What burr? function?

Answer 3

• 379
• Football Diamond
• occlusal reduction or refinement
• occlusal bevel

Question 4

What burr? Function

Answer 4

• 850
• Thin Tapered Diamond
• interproximal Slices

Question 5

Name? Function?

Answer 5

• Crown & Bridge Sissors
• trimming margins of SSCs when too long

Question 6

Name? Function?

Answer 6

• 114 pliers
  
  • Ball and Socket Pliers
• Contouring SSCs

Question 7

Name? Function?

Answer 7

• 137 Pliers
  
  • Gordon Pliers
• Contouring and Crimping

Question 8

Name? Function?

Answer 8

• 800-417 Pliers
  
  • Unitek Pliers
• Crimping

Question 9

What cements are used for cementation of a SSC

Answer 9

• Glass ionomer
  
  • Preferred
• Zinc phosphate
• polycarboxylate
• Self-curing resin ionomer

Question 10

Cementation procedure

Answer 10

• Dry crown inside and out after fintal try-in
• Mix cement
• fill 2/3 full and cover all internal surfaces
• Rinse and Dry tooth
• Seat crown
  
  • cement expresssed from all margins
  • Ensure complete seating
    
    • cement expressed from all margins
    • mirror handle to apply apical pressure
    • bite on tongue blade
• Centric Occlusion before cement sets
  
  • ensure occlusion has not been altered
• Remove Excess cement
  
  • buccal/Lingual
    
    • tip of explorer and air/water
  • interproximal
    
    • floss w/knot-pass knot Lingual–>Buccal

Question 11

SSCs: Concerns

Answer 11

• Adjacent SSC
• Areas of Space loss
• Esthetics

Question 12

SSCs Variations

Answer 12

• Anteior and posterior teeth
• Open Faced SSCs
  
  • anterior teeth
• Veneered SSCs
  
  • anterior and posterior
  • superior esthsetics
  • concerns:
    
    • require more tooth reduction
    • can’t contour or crimp margins where veneer is present
    • can be displaced from crown
    • discolor
• Strip Crown
  
  • Anterior teeth

Question 13

Crimping

Answer 13

• bending gingival 1/3 inward
  
  • reduce marginal circumference
  • increases
    
    • marginal adaptation
    • physical resistance to displacement
  • protect cement from being exposed to oral fluids

Question 14

Contouring

Answer 14

• all surfaces of crown
• replace/restore original biologic contours of the tooth
• aid in:
  
  • adaptation
  • ability to be cleaned