Effect of Cured Versus Uncured Adhesive Inclusion on the Microtensile Bond Strength of Sealants
Methods: Flat enamel surfaces were created on 54 extracted, sound human molars by sequential grinding. Three different sealants– Clinpro (3M ESPE), Ultraseal XT Hydro (Ultradent), and Fluorshield VLC (Dentsply)– were placed after acid etching without a bonding agent (control) or with three different bonding agents - Adper Single Bond Plus (3M ESPE), Peak Universal Bond (Ultradent), and Prime&Bond Elect (Dentsply)– each in both light-cured and uncured form. The teeth were sectioned into bar specimens and the MTBS of each specimen was measured. The bond strength data were analyzed using two-way analysis of variance and Tukey's test (P=0.05).
Results: There was no significant difference between the MTBS of sealants in the thermocycled and non-thermocycled groups. The uncured adhesive had the lowest bond strength in each group, except for Clinpro after thermocycling. Teeth with uncured adhesive exhibited significantly lower bond strength in the Ultraseal (no thermocycling) and Fluroshield (with thermocycling) groups (P=0.02 and P=0.001, respectively).
Conclusions: Adding bonding agents without curing before sealant placement weakened the microtensile bond strength. There was no significant difference in MTBS between the thermocycled and nonthermocycled groups.
Document Type: Research Article
Affiliations: 1: Pediatric dentist in private practice, Biloxi, Miss., USA 2: Professor and Head, Division of Biomaterials, Department of Comprehensive Dentistry and Biomaterials, in the School of Dentistry, at Louisiana State Health Sciences Center New Orleans, New Orleans, La., USA 3: Clinic assistant professor, in the Department of Pediatric Dentistry, in the School of Dentistry, at Louisiana State Health Sciences Center New Orleans, New Orleans, La., USA 4: Associate professor, Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey 5: Orthodontic resident at the University of Oklahoma College of Dentistry, Oklahoma City, Okla., USA 6: Dental student, in the School of Dentistry, at Louisiana State Health Sciences Center New Orleans, New Orleans, La., USA 7: Associate professor, Biostatistics Program, School of Public Health, at Louisiana State Health Sciences Center New Orleans, New Orleans, La., USA 8: Associate professor and Head, in the Department of Pediatric Dentistry, in the School of Dentistry, at Louisiana State Health Sciences Center New Orleans, New Orleans, La., USA;, Email: [email protected]
Publication date: 01 May 2017
- Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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