Temporary Abutment

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Temporary Abutment
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Temporary Abutment
Concept

• Intended use
• For NC (Narrow Crossfit Connection) and RC
  (Regular Crossfit Connection)
• Screw- or cement-retained temporary
• single crowns
• Cement-retained temporary bridges

• Component materials
• Temporary Abutment (Polymer, Ti)
• Basal Screw (TAN)

NC
RC

• Benefits
• Easy chair-side modification
• Esthetic temporization
• High flexibility
• Stability and precision

TAN is one type of titanium alloy material
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Important

• Restoration can remain in mouth for up to 6
  months only
• Temporary restoration must be out of occlusion
• Modification
• Radially max. 0.5 mm for NC and 1.0 mm for RC
• Vertically max. 6.0 mm (maintain at least 5.0 mm
  polymer height)

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Temporary Abutment

• Option A
• Screw-retained temporary restoration
• Option B
• Cement-retained temporary restoration

A
B
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Diagnostic wax-up and lab impression
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Option A. Screw-retained restoration

• Steps
• Modify temporary abutment
• Roughen upper section of abutment
• Use heatless wheels and new carbide burs
• Work with low rpm, little pressure

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Option A. Screw-retained restoration

• Hand-tighten individualized abutment into
  implant or model
• Seal screw channel (e.g., with composite)

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Option A. Screw-retained restoration

• Direct veneer the abutment with vacuum-formed
  sheet technique and fill with acrylic
• Remove excess acrylic
• Polish finished crown

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Option A. Screw-retained restoration

• Re-open the screw channel
• Tighten temporary crown between 15 - 35 Ncm
• Cover screw head (e.g., with absorbent cotton)
• Seal screw channel (e.g., with composite)

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Option B. Cement-retained restoration

• Modify temporary abutment (no undercuts!)
• Roughen upper section of abutment
• Use heatless wheels and new carbide burs
• Work with low rpm, little pressure

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Option B. Cement-retained restoration

• Isolate modified abutment
• Fabricate cementable crown on top (e.g., build up
  with composite)

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Option B. Cement-retained restoration

• Place customized abutment onto implant
• Tighten temporary crown between 15 - 35 Ncm
• Cover screw head (e.g., with absorbent cotton)

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Option B. Cement-retained restoration

• Cement crown using temporary cement