J Interdiscip Dentistry
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ORIGINAL ARTICLE
Year : 2014  |  Volume : 4  |  Issue : 2  |  Page : 81-84

Effect of single and multiple consecutive applications of all-in-one adhesive on tensile bond strength to dentin


1 Department of Conservative Dentistry and Endodontics, Sri Venkata Sai Institute of Dental Sciences, Mahabubnagar, India
2 Department of Conservative Dentistry and Endodontics, St. Joseph dental college, Eluru, Andhra Pradesh, India
3 Department of Conservative Dentistry and Endodontics, Mamata Dental College, Khammam, Telangana, India

Correspondence Address:
Aravelli Swathi
Department of Conservative Dentistry and Endodontics, Sri Venkata Sai Institute of Dental Sciences, Mahabubnagar
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2229-5194.142942

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Aim: The purpose of this study was to evaluate the effect of single and multiple consecutive applications of all-in-one self-etch adhesive on the tensile bond strength (TBS) to dentin. Materials and Methods: Tetric N-bond self-etch all-in-one adhesive was used in the study. Thirty extracted human mandibular molars mounted in self-cure acrylic resin and with the occlusal enamel removed were divided into three groups based on the number of applications of adhesive. Group 1: Single layer of adhesive was applied, and light-cured for 10 s; Group 2: Two layers of adhesive were applied with intermediate curing between each layer; Group 3: Four consecutive layers of adhesive were applied with intermediate curing between each layer. Resin composite build-ups were made, and TBS was estimated using a universal testing machine. Results : There was an increase in TBS when two layers of adhesive were applied compared to single and four layer applications (P < 0.001). Conclusion: Bond strength with two consecutive applications of all-in-one self-etch adhesive was significantly higher than with a single application, but application of further coatings caused a decrease in bond strength. Clinical Relevance To Interdisciplinary Dentistry
  • Self-etching adhesive systems are used in the various procedures in different specialties of dentistry such as for restoration of routine tooth preparations; gingival recession and cervical lesions, the root surface desensitization; core build-ups made of light-curing composite; cementation of indirect restorations.
  • Self-etching adhesive systems allows practitioner to place restorations in a more simplified manner with decreased postoperative sensitivity.
  • After application, these products create very thin coatings, which may be oxygen inhibited and hence poorly polymerized leading to decreased bond strength.
  • Simple changes in bonding technique, such as applying two layers of all-in-one adhesives can lead to the larger increase in initial bond strength.


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