OPER 8120 Chapter Notes - Chapter 2: Polyacrylic Acid, Ionomer, Sealant
12 Apr 2020
School
Department
Course
Professor
Document Summary
Preventive->used in high risk sites/patients to prevent caries. Therapeutic->treatment of early pit and fissure caries lesions (icdas 1 and 2) Minimally invasive prep with improved seal of restoratives. Sealant placement procedure: rubber dam isolation, clean with non-fluoridated pumice on prophy, acid-etch enamel with 35% phosphoric acid for 30s, rinse and dry, apply adhesive system, place filled resin sealant without voids i. *cover the entire areas of fissures and groves on the occlusal surface: light cure->optibond (18j, polish as needed with latch 6000 rpm, note: place primer is dentin is involved after fissurootomy between steps 4 and 5. *fluoride-releasing material essential in treating high-caries-risk patient* Powder (fluoroaluminosilicate glass) + liquid (polyacrylic acid) Free radical initiators (trigger curing of methacrylate groups) Water-soluble resin monomers mixed with aqueous polyacrylic acid. Ions released from glass particle reacts with polyacrylic acid (hema) Bonding with micro-mechanical interlock or ionic bonds btw carboxyl groups + calcium from ha. Type i-luting crowns, bridges, and orthodontic bracket.
