Bond strength of dentinal bonding agents to chemomechanically prepared dentin |
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| Authors: | P. McInnes-Ledoux W.R. Ledoux R. Weinberg |
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| Affiliation: | 2. Department of Orthodontics LSU School of Dentistry, New Orleans, U.S.A.;3. Department of Biometry, LSU School of Dentistry, New Orleans, U.S.A.;1. Department of Operative Dentistry, LSU School of Dentistry, 1100 Florida Avenue, New Orleans, LA 70119, U.S.A.;1. Minnesota Dental Research Center for Biomaterials and Biomechanics (MDRCBB), School of Dentistry, University of Minnesota, MN, USA;2. Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, MN, USA;3. Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, MN, USA;1. Division of Oral and Maxillofacial Surgery, Department of Surgery, Emory University School of Medicine, and Section of Dentistry/Oral and Maxillofacial Surgery, Children''s Healthcare of Atlanta, Atlanta, GA, USA;2. Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, MA, USA;3. Previously, Clinic Operations, the Emory Clinic, Atlanta, GA. Currently, Director, Orthopedics and Spine Service, DeKalb Medical Center, Decatur, GA;1. AO Research Institute Davos, Davos, Switzerland;2. Schulthess Clinic Zurich, Zurich, Switzerland;3. Guro Hospital, Korea University College of Medicine, Department of Orthopaedic Surgery, Seoul, Republic of Korea;4. Cantonal Hospital Baselland, Liestal, Switzerland;5. University of Basel, Basel, Switzerland;6. Synthes GmbH, Zuchwil, Switzerland;7. Harborview Medical Center, Department of Orthopaedic Surgery, Seattle, WA, USA |
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| Abstract: | The aim of this investigation was to compare the shear bond strengths of 5 commercially available dentinal bonding agents to remaining dentin after chemomechanical caries removal (CaridexTM) with the strengths obtained after caries removal with conventional mechanical drilling; and to examine the dentin/resin interface. One hundred freshly extracted carious teeth were randomly assigned for caries removal with either the chemomechanical technique or with conventional mechanical drilling. Caries removal was continued until the remaining dentin surfaces were judged sound. In addition, 50 sound teeth were ground on 600 grit SiC to provide a control group. Groups of 10 teeth were assigned for bonding with each of the 5 dental bonding agents. All bonded specimens were stored in water at 37°C for 24 h. Shear bond strength was tested using an Instron testing machine at a cross-head speed of 0.05 cm/min. Analysis of variance showed that the 5 materials tested produced significantly different bond strengths (p<0.001). For the 5 dentinal bonding agents evaluated, chemomechanically-treated dentin provides at least comparable, and probably superior, 24 h bond strengths compared with dentin that has been mechanically prepared. |
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| Keywords: | Bonding composite resins dental dentin caries removal |
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