Question 45

Question 1

what to do for cementation of crown/bridge/veener

Answer 1

• Disinfect received prosthesis
• Removal of provisional restoration and cleaning of abutments with pumice
• Try in – check fit, margins, occlusion (shimstock), guidances and aesthetics
  o Have pt seated upright, with gauze or sticky stick to protect airway
• Fitting surface treated as appropriate (usually done by lab)
• Clean fitting surface
• Treat tooth as appropriate – isolate with split dam, etch, prime/bond
• Apply cement to fitting surface and seat firmly and fully
• Remove excess cement and floss margins (contact points)
• Check occlusion and adjust if need be
• Check pt is happy, give post-op instructions (avoid hard foods) and advise on cleaning

Question 2

what to cement crowns with

Answer 2

• Porcelain fused to metal/MCC – Aquacem GI luting cement, RelyX RMGI luting cement, NEXUS/RelyX/Panavia dual cured resin cements
• Metal crown - Aquacem GI luting cement, RelyX RMGI luting cement, NEXUS/RelyX/Panavia dual cured resin cements
• All-ceramic crown - NEXUS/RelyX/Panavia dual cured resin cements

Question 3

how to cement bridge and what with

Answer 3

• Adhesive bridgework – Panavia anaerobic dual cure resin luting cement
  o Fit surface of retainer (CoCr or NiCr) sandblasted for micromechanical retention
  o Oxygen inhibitor (Oxyguard) placed around cement margins for 3 mins then washed off
  o Opaque material useful in anteriors to block metal show-through
• All metal conventional and metal ceramic bridgework – Aquacem GI luting cement, RelyX RMGI luting cement
  o For resin base cement, initial 10s tack cure, remove excess cement, then fully cure
• All ceramic bridgework – NEXUS dual cure resin luting cement
  o Fit surface treated with HF acid and silanated

Question 4

what to cement veener and inlay onlays with

Answer 4

• Porcelain veneer – RelyX veneer light cure resin cement
• Porcelain inlay/onlay - RelyX veneer light cure resin cement, NEXUS/RelyX/Panavia dual cured resin cements