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Direct resin bonding - acid etching

Direct resin - acid etching

Rodrigo R. Maia, DDS, PhD

Acid etching is a clinical adhesive protocol involving the use of phosphoric acid.  Occlusal grooves and fissures are cleaned with air abrasion and a 2% chlorhexidine solution, rinsed, and lightly air dried. 37.5% phosphoric acid is then spread evenly over the desired surface, and left to sit for 15 seconds. The area is then rinsed for 5 seconds and gently air thinned for 5 seconds. A wear-resistant, radiopaque resin-based composite is used to replace the tooth structure and any grooves or fissures adjacent to the preparation, and a sealant is then placed into any remaining pits or fissures.

 *Visiting Assistant Professor, University of Iowa School of Dentistry, Iowa City, IA. 

 

Learning Objectives: 

This video demonstrates the techniques and practices for the use of acid etching. Upon completion of this video, the viewer should:

  • Come to an understanding of what acid etching is and how the process works.
  • Realize appropriate times to impliment this technique.

 

 Related Reading: 

  1. Sasa I, Donly KJ. Sealants: a review of the materials and utilization. J Calif Dent Assoc. 2010 Oct;38(10):730-4. 
  2. Akyıl MS, Yılmaz A, Bayındır F, Duymuş ZY. Microtensile Bond Strength of Resin Cement to a Feldspathic Ceramic. Photomed Laser Surg. 2010 Dec 18. 
  3. Choi S, Cheong Y, Lee GJ, Park HK. Effect of fluoride pretreatment on primary and permanent tooth surfaces by acid-etching. Scanning. 2010 Dec 6. 
  4. Fron H, Vergnes JN, Moussally C, Cazier S, Simon AL, Chieze JB, Savard G, Tirlet G, Attal JP. Effectiveness of a new one-step self-etch adhesive in the restoration of non-carious cervical lesions: 2-Year results of a randomized controlled practice-based study. Dent Mater. 2010 Nov 29. 
  5. Pashley DH, Tay FR, Breschi L, Tjäderhane L, Carvalho RM, Carrilho M, Tezvergil-Mutluay A. State of the art etch-and-rinse adhesives. Dent Mater. 2010 Nov 26. 
  6. Fowler AC, Ward JA, O'Brien SB. A simple model for multicomponent etching. J Colloid Interface Sci. 2011 Feb 1;354(1):421-3. Epub 2010 Nov 2. 
  7. Gamal AY, Kumper RM, Sadek HS, El Destawy MT. Chlorhexidine Controlled Release Profile Following Ethylene Diamine Tetraacetic Acid Root Surface Etching- An in Vivo Study. J Periodontol. 2010 Nov 23. 
  8. Brauchli L, Muscillo T, Steineck M, Wichelhaus A. Influence of enamel conditioning on the shear bond strength of different adhesives. J Orofac Orthop. 2010 Nov;71(6):411-20. Epub 2010 Nov 17. 
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