| ORIGINAL ARTICLE |
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| Year : 2014 | Volume
: 4
| Issue : 2 | Page : 81-84 |
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Effect of single and multiple consecutive applications of all-in-one adhesive on tensile bond strength to dentin
Aravelli Swathi1, Thumu Jayaprakash2, V Chandrasekhar3
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
 Source of Support: None, Conflict of Interest: None  | Check |
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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