Applications in Dentristry 11/14/2018

ADHESIVE DENTISTRY Indications Replace carious and fractured tooth structure. Fill erosion or abrasion defects in cervical areas. Correct unaesthetic shapes, positions, dimensions, or shades. Bond silver amalgam restorations. Cement crowns. 11/14/2018

Indications-continued Bond orthodontic brackets. Treat dentinal hypersensitivity. Repair fractured porcelain, amalgam, and resin restorations. Pit and fissure sealants. Core build up foundations. 11/14/2018

Sealants 2. Apply sealant 1. Etch enamel 3. Light cure PREVENTIVE DENTAL MATERIALS To prevent disease or injury to the teeth and supporting tissues Flouride gels, pit and fissure sealants, mouth protectors TOPICAL APPLICATION OF FLOURIDE Acidulated phosphate-flouride gels (Na and H flouride & orthophosphoric acid) Reduction in dentalcaries of approx 40% were observed in 2 studies of 2 years’ duration in which the gel was applied annually. PIT AND FISSURE SEALANTS A reduction in smooth surface caries has been accomplished by: Flouridation of communal water supplies topical application of fluoride during enamel development individual plaque control programs. 84% of dental caries in children ages 5 to 17 involve pits The purpose of the pit and fissure sealant is to penetrate all cracks, pits and fissures on the occlusal surfaces of both deciduous and permanent teeth to seal off these susceptible areas. Most commercial pit and fissure sealants are: - BIS-GMA (bisphenol glycidyl methacrylate) - Urethane dimethacrylate Chemistry similar to that of the dental composites Very fluid to penetrate the pits and fissures and etched areas on enamel Courtesy of 3M Dental Products 11/14/2018

Glass-ionomers Most commonly referred to as glass ionomer cements (GIC's). These are materials which consist of an aqueous polyacrylate and a fluoroaluminosilicate glass. These set by an acid-base reaction in the presence of water. These cements appear to adhere to tooth structure by formation of ionic bonds as a result of chelation of the carboxyl groups in the acid with the calcium and/or phosphate ions in the apatite of enamel and dentin. GLASS IONOMER CEMENTS Finely ground aluminosilicate glass Liquid is a polycarboxylate copolymer The chemical reaction gives rise to a cross-linked gel matrix Bonding to tooth tissue occurs between the polycarboxylate molecules and calcium on the surface of the tooth. There are other cements like: Zinc oxide eugenol cements Zinc polycarboxylate cements For Cementation of inlays, veneers, orthodontic bands and brackets, resin-bonded bridges etc. 11/14/2018

COMPOSITION POWDER = CALCIUM FLUOROALUMINOSILICATE GLASS Silicon 13.3% Phosphorus 2.5% Aluminum 13.3% Fluoride 22.7% Calcium 17.3% Oxygen 28.0% Sodium 1.6% LIQUID = POLYACRYLIC ACID OR COPOLYMER OF ACRYLIC ACID WATER 11/14/2018

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Composites 11/14/2018

Most Common Dental Resin bisphenol A glycol dimethacrylate triethylene glycol dimethacrylate 11/14/2018

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Fractured incisors http://www.seattle-dentist.com/chipped-teeth.htm 11/14/2018

LINKMAX Packaging Self-Etching Primer EP-B 50 Yellow & 50 Pink Micro-Tips Packaging Self-Etching Primer EP-A Mixing Pad LINKMAX A3 Cartridge Ceramic Primer LINKMAX Clear Cartridge Metal Primer II Package Dispensing Dish 11/14/2018 Micro-Tip Handle Mixing Spatula

Paste Pak Dispenser • Produces Ideal Consistency Every Time. • Dispenses The Exact Mixing Ratio No Matter How Little Or How Much Material Dispensed. • Metering Slide Enables The User To Control The Volume Of Material Dispensed To Reduce Waste. More Less 11/14/2018

Dual Cure: Light Cure & Self Cure • Temporary Light-Cured Linkmax Removes Easily With Hand Instrument One Minute After Seating. • No Radical Clean-Up Procedure Should Be Required. • Light-Cure Each Surface Of Restoration 20 Seconds. • When Used Under Metal Or When Cement is Difficult To Expose To Light, Linkmax Self-Cures In 6 Minutes From Placement Of Prosthesis. 11/14/2018

BONDING MICRO-FILLED HYBRID RESIN Apply thin layer to prosthesis with micro-tip. Light-cure for 20 seconds Using a VLC Curing Light. Shake the Self-Etching Primer bottles, then dispense one drop each into dispensing dish and mix for 5 seconds. Apply to tooth surface. Dispense LINKMAX and mix for 10 seconds. Apply LINKMAX to primed porcelain surface. Hold for 1 minute. Light-cure for 1-2 seconds; then remove excess. Light-cure each surface for 20 seconds. 11/14/2018

BONDING MICRO-FILLED HYBRID RESIN Composite Primer LINKMAX Self-Etching Primer MFR Hybrid Resin Inlay Composite Primer LINKMAX Self-Etching Primer NOTE:When bonding MFR hybrid resin (with main ingredients of organic fillers) from another manufacturer, apply CERAMIC PRIMER to the prosthesis instead of COMPOSITE PRIMER. 11/14/2018

BONDING PORCELAIN Apply etchant, after 30 seconds, rinse with water and dry. Dispense one drop each Ceramic Primer into dispensing dish and mix for 5 seconds. Apply to bonding surface and dry. Shake the Self-Etching Primer bottles, then dispense one drop each into dispensing dish and mix for 5 seconds. Apply to tooth surface. Dispense LINKMAX and mix for 10 seconds. Apply LINKMAX to primed porcelain surface. Hold for 1 minute. Light-cure for 1-2 seconds; then remove excess. Light-cure each surface for 20 seconds. 11/14/2018

• • • • BONDING PORCELAIN Etchant Etchant Ceramic Primer LINKMAX LINKMAX Self-Etching Primer Self-Etching Primer Porcelain Inlay Ceramic Primer Etchant LINKMAX Ceramic Primer LINKMAX Self-Etching Primer Self-Etching Primer Porcelain Veneer Etchant 11/14/2018

BONDING METAL PROSTHESIS TO TOOTH STRUCTURE Metal Primer II Metal Crown LINKMAX Self-Etching Primer 11/14/2018

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The future Adhesive dentistry Biocompatible materials Improving the properties of adhesive materials. e.g. wear resistance, strength Biocompatible materials Antibacterial, bioactive, drug delivery Increasing use of implants Shorter healing periods Poorer quality bone Less bone Growing natural teeth 11/14/2018