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robbypowell's version from 2016-12-06 00:16

Bonding lecture (yay Zaher)

Question Answer
Cementation vs. bonding... how are they different?Cementation: Luting agent/cement used to attach restoration to tooth (retentive prep) Bonding: adhesive technique with etching to create micro mechanical retention (can also be chemical bond like with Glass ionomer)
insufficient mechanical retention, good isolation, weak ceramic, high esthetic demand, presence of enamel, supra gingival margins are indications for cementation or bonding?Bonding
Retentive prep, difficult isolation, strong ceramic, low esthetic demand, absence of enamel, sub gingival margins are indication for cementation or bonding?cementation
Zinc phosphate and RMGI are materials used for _______ (cementation/bonding)cementation
Adhesive resin cement, such as dual-link is used for _______ (cementation/bonding)Bonding
What are the 3 components of resin cements?Organic monomer + Silanated inorganic fillers + Initiators
What is the key difference between different resin cements?Bonding agents used
What are the 3 types of resin cements?Total Etch (light cured) + Self-etch (cured how?) + Self-adhesive (dual cure)
_____ based ceramics are EtchableSilica
Ceramic resorative material without ______ are non-etchableSilica
This ceramic restorative material is MAINLY silicaFeldspar Porcelain (silica based ceramic)
These 2 ceramic restorative materials have silica and crystalline fillersLeucite reinforced & Lithium Disilicate (both silica based ceramics)
This crystalline based ceramic material is made with alumina and glass fillersAlumina (non silica)
This polycrystalline ceramic material is made with alumina and no glassZirconia (non-silica)
What acid is used to etch silica based ceramic restorative material?HF acid (varying %'s) (9.6 for feldspar porc & leucite ceramic) (5% for lithium disilicate)
What is the etching protocol for Feldspathic ceramic (acid, concentration, time)HF Acid, 9.6%, 2 minutes
What is the etching protocol for Leucite ceramic (acid, concentration, time)HF Acid, 9.6%, 90 seconds (1.5 minutes)
What is the etching protocol for Lithium disilicate (acid, concentration, time)HF Acid, 5%, 20 seconds
What is the etching protocol for Zirconia?DO NOT ETCH (non-silica based)
_______ ______ agent is a Bi-functional molecule that bonds to Hydroxyl groups on ceramic surface and organic portion of resin cement/adhesiveSilane Coupling Agent
Which ceramics should be Silinated?silica based etchable ceramics (Feldspathic Porc, Leucite Ceramic, & Lithium Disilicate)
When should you silinate?After HF etching and before try-in
What is the bonding protocol for Feldspar Veneers?o Steam clean or apply PA for 1 min (rub with stiff brush then dry) o Silinate the veneer o Try veneer on cast for fit and form → try in mouth with try-in paste o Ultrasonic clean with Ethanol for 2 min (do not re-silanate) o Thin layer DBA inside veneer o Load restoration with Luting resin cement
T/F: Zirconia is non-etchableTrue (Z is non-silica based)
T/F: Lithium Disilicate is non-etchableFalse (LD is silica based)
T/F: Zirconia is etchableFalse (Z is non-silica based)
T/F: Lithium Disilicate is etchableTrue (LD is silica based)
How is micro-mechanical retention improved for zirconia materials?Air-abrasion (alumina coated particles coated with silane 50 micro meter)
Air abrasion protocol for Zirconia (particles, Pressure range, Location, how do you clean?)Particles: Alumina particles coated with silica 50 micro-m; Pressure range <2.5 bar for 20 sec; • Location: 10 mm distance at 45 degree to surface in circular motion
How long should MDP primer be left on zirconia when bonding?left for 5 min (primer)
Does this describe bonding or cementing zirconia: Try-in, APA (air partial abrasion), Clean intaglio, RMGICementation
Does this describe bonding or cementing zirconia: Try-in, APA (air partial abrasion), Clean intaglio, MDP Primer, MDP Resin cement, MDP-DBABonding (MDP = bonding)
Which generations of DBA have MDP?6th and 7th
How long should you allow silane coupling agent to dry?60 seconds
MDP primer is used for what type of ceramics?non-etchable (primarily zirconia) use Z-prime plus (contains MDP) (20 sec to dry, 5 min to prime)
What is the Film thickness of Z-primer (w MDP)?<3 microns
What is the film thickness for DBA & MDP one bottle universal primer?> 8 microns
What type of resin cement/agent should be used with abundant enamel? (total-etch, self-etch, self-adhesive)Total Etch
What type of resin cement/agent should be used with Little or minimal enamel? (total-etch, self-etch, self-adhesive)Selective Etch
What type of resin cement/agent should be used with poor retentive features of the prep? (total-etch, self-etch, self-adhesive)Total Etch
What type of resin cement/agent should be used with good retentive feature of preparation? (total-etch, self-etch, self-adhesive)Self-adhesive
What type of resin cement/agent should be used with good isolation? (total-etch, self-etch, self-adhesive)Total Etch
What type of resin cement/agent should be used with "moderate" (not good, not terrible) isolation? (total-etch, self-etch, self-adhesive)Self-etch
What type of resin cement/agent should be used with difficult isolation? (total-etch, self-etch, self-adhesive)Self-adhesive
memorize

Match type of bonding agent and generation

Question Answer
Etch + Primer + Bond agentTotal Etch; 4th generation
Etch + (Prime-Bond)5th generation
(Etch + Prime) + Bond agentSelf-etch; 6th generation
(Etch + Prime + Bond) (all in one)7th generation
memorize

Which etching technique? (Total, Self, or Selective)

Question Answer
Phosphoric acid for both dentin and enamel (etch and rinse)Total Etch
Self-etching primers for enamel and dentin (non rinse)Self-etch
Phosphoric Acid for enamel and self etch primers for dentinSelective Etch
memorize

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