New York University College of Dentistry Laboratory Course Procedures Part 2 PDF

New York University College of Dentistry 345 East 24th street New York, NY 10010 LABORATORY COURSE FOR FIRST-YEAR STUDENTS Part 2 Adjunct Instructor Prosthodontics Steven Pigliacelli, MDT, CDT Steven Pigliacelli, MDT, CDT Laboratory Technology Lecture: Observe all stages of the crown and bridge...

New York University College of Dentistry 345 East 24th street New York, NY 10010 LABORATORY COURSE FOR FIRST-YEAR STUDENTS Part 2 Adjunct Instructor Prosthodontics Steven Pigliacelli, MDT, CDT Steven Pigliacelli, MDT, CDT Laboratory Technology Lecture: Observe all stages of the crown and bridge department for Ceramic Procedures and Dentures. a. Ceramic options a. PFM b. Pressed c. Milled d. Monolithic e. PFZ f. Full Arch b. Denture Protocol a. Traditional Processing b. Injection a. Flask b. Diatorics c. Process d. Finish Ceramic application De-gas, wash bake, opaque Build up, bisque bake All-Ceramic Options Lithium Disilicate e.max Pressed Restoration Single to 3 Unit Crown, Inlay, Onlay, Bonded Bridge • The die is waxed • Full contour design • Pressed in e.max Press Ingots • All shades are available • Stack porcelain, Contour, Stain and Glaze e.max Milled Restoration Single to 3 Unit Crown, Inlay, Onlay, Bonded Bridge • The die is scanned • Full contour design • Milled in e.max blocks • All shades are available • Stack porcelain, Contour, Stain and Glaze Zirconia Coping with Porcelain Single Unit to Roundhouse with Stacked Porcelain • The die is scanned • Coping substructure designed • Milled in e.max ZirCad LT Puck. • 4 shades are available • Stack porcelain, Contour, Stain and Glaze Full Contour Zirconia Crown Single to 3 Unit Bridge • The die is scanned • Full contour design • Milled in e.max ZirCad MT Puck. • All shades are available • Contour, Stain and Glaze Zirconia Shade Conversions MT A1 A2 A3 A3 A3 A1 B2 A3 A3 D2 C2 C2 A3 D2 A3 D2 VITA CLASSIC A1 A2 A3 A3.5 A4 B1 B2 B3 B4 C1 C2 C3 C4 D2 D3 D4 LT T2 T2 T2 T4 T4 T1 T2 T3 T3 T2 T3 T3 T3 T2 T4 T3 MT BL BL B1 B1 A1 B1 A2 A3 D2 A3 A3 D2 A3 A3 A3 A3 A3 A2 A3 C2 A3 A3 A3 A1 A3 A2 A3 A3 A3 VITA 3D MASTER OM1 OM2 OM3 1M1 1M2 2M1 2M2 2M3 3M1 3M2 3M3 4M1 4M2 4M3 5M1 5M2 5M3 2L1.5 2L2.5 3L1.5 3L2.5 4L1.5 4L2.5 2R1.5 2R2.5 3R1.5 3R2.5 4R1.5 4R2.5 LT T0 T0 T1 T1 T2 T2 T2 T4 T2 T2 T3 T4 T4 T4 T4 T4 T4 T2 T4 T4 T4 T3 T3 T2 T2 T2 T4 T4 T4 Full Contour Zirconia Crown. With Hole Single Implant Unit • The abutment is scanned • Full contour design • Milled in e.max ZirCad MT Puck. • All shades are available • Contour, Stain and Glaze Full Contour Zirconia Crown. No Hole Single Implant Unit • The abutment is scanned • Full contour design • Milled in e.max ZirCad MT Puck. • All shades are available • Stack Porcelain on Buccal Surface Only • Contour, Stain and Glaze Full Contour Zirconia Crown With Buccal Porcelain. With Hole Single Implant Unit • The abutment is scanned • Full contour design • Milled in e.max ZirCad MT Puck. • All shades are available • Stack Porcelain on Buccal Surface Only • Contour, Stain and Glaze Full Contour Zirconia Crown With Buccal Porcelain. No Hole Single Implant Unit • The abutment is scanned • Full contour design • Milled in e.max ZirCad MT Puck. • All shades are available • Contour, Stain and Glaze Anatomical Emergence Profile Water Tower Design for Deep Implants. Straight Up then Emerge at the Near Surface. Do not overbulk the porcelain, so as to prevent seating. Milled Metal Coping with Porcelain Natural Teeth Crown and Bridge • The die is scanned • Coping substructure designed • Milled offsite. Base and Nobel Alloy available. • Regular Ceramic is used. Opaque/Build up and Glaze. • All shades are available Manhattan Metal Coping with Porcelain • Milled offsite. Base Alloy. • Regular Ceramic is used. Opaque/Build up and Glaze. • All shades are available Incorrect Pontic Contours No Ridge Laps No Flanges Must be Hygienic No Grooves Between the Teeth Against the Tissue Correct Incisal Embrasures are just as important and Gingival Embrasures. Zirconia Full Contour Monolithic Bridge • The PMMA Prototype is scanned • Full Contour Copy of PMMA is designed • Milled in e.max ZirCad LT Puck. • 4 shades are available • Stain and Glaze Zirconia Full Contour Porcelain Veneered Bridge • The PMMA Prototype is scanned • Full Contour Copy of PMMA is designed • Milled in e.max ZirCad LT Puck. • 4 shades are available • Stack porcelain, Contour, Stain and Glaze Pink Gingival Porcelain Cut Back Prior to Porcelain Application Porcelain Should be Flush Denture Protocol Polymethyl methacrylate (PMMA), a synthetic resin produced from the polymerization of methyl methacrylate. Processed Heat cured In Boil out tank. Dentsply, Lucitone 199 Traditional Processing technique Processed in Microwave oven. GC, Acron Pour resin Fricke Vitacrilic, Lucitone, Lucitone® HIPA (High Impact Pour Acrylic) Injection Processed Denture Medical Grade thermoplastic, Flexite, Valplast (PMMA) Dentsply Success, Kulzer Palajet, Ivolcar Ivocap and Ivobase Traditional Denture Processing Lucitone 199 ResidualMMA Content.......................................................2.2% (% mass fraction) Maximum Type and Class (according to ADA Spec. 12) ............................................Type 1, Class 1 Storage temperature for powder and liquid...........................................60-80°F (16-27°C) Powder/Liquid ratio ...........................................................................21g (32 cc)/10 ml Mixing time (time required to wet all particles) ............................................15-30 seconds Time to reach packing plasticity @ 73°F ± 2°F(23 ± 1°C) ................................9±2 minutes Working time ..........................................................................................10 ± 4 minutes Material used to prepare mold.............................................................................gypsum Temperature of mold when packing ...............................room temperature to 110°F (43°C) Recommended cure time and temperature 1st stage .................................................1-1/2 hours @ 163°F (73°C) 2nd stage..................................................1/2 hour @ 212°F (100°C) Alternate cure time and temperature 1st stage........................................................9 hours @ 163°F (73°C) 2nd stage..................................................1/2 hour @ 212°F (100°C) Method of cooling flask, time and temperature 1st stage .....................................1/2 hour in air at 60-80°F (16-27°C) 2nd stage................................1/4 hour in water at 60-80°F (16-27°C) Ivoclar SR Ivocap Injection System Ivoclar SR IvoBase IvoBase® System Plug and play computer controlled Heater Flask press Polymerization bath Clamping frame Injector • No additional equipment necessary (e.g. Cap Vibrator) IvoBase® System Residual Monomer Reduction RMR program (Residual Monomer Reduction) Programat Award 2007 1st rank Residual monomer below 1% and less tissue irritation 48 Steven Pigliacelli MDT, CDT [email protected]