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Preclinical dentistry II.
Temporary crowns and bridges.
After preparation the teeth must be
protected with the temporary treatment
• Protection of dentin wound
• Prevention of changes in position of the teeth
• Aesthetics
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Temporary crowns and bridges
• Made of methylmetacrylate resin in dental lab
• Made in dental office of special material („stamping method“)
• Prefabricated crowns
• 3D printed temporaries
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Temporary crowns and bridges
• Made of methylmetacrylate resin in dental lab
After preparation the aginate impression is made in addition to
elastomeric impression.
In dental lab the temporary bridge of the methylmetacrylate resin is
made (wax pattern, flasking, polymerization)
The bridge is cemented using the temporary cement.
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Temporary crowns and bridges
• Made in dental office of special material („stamping method“)
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Operations
• Temporary crown and bridge resins are used to provide
immediate temporary coverage following tooth preparation for
crowns or bridges.
• The usual technique is to record an initial impression in an
alginate material prior to tooth preparation. The major
impression may be recorded then or subsequently using an
elastomeric impression material.
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• The mixed temporary crown or bridge resin is applied to the
prepared areas by placing it into the desired area of the alginate
impression which is reseated in the patient’s mouth. After initial
setting, the impression and the resin are removed and final
hardening occurs outside the mouth.
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• Temporary crowns can also be fabricated by placing the resins
on to prepared teeth in clear plastic crown formers.
• The temporary crowns and bridges are cemented into place
with temporary cements.
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Temporary crowns and bridges
• Prefabricated crowns
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Temporary crowns and bridges
• 3D printed temporaries
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Temporary cement
• Zink oxide eugenol cements
• Eugenol free cements (oil cements)
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