Tags

Type your tag names separated by a space and hit enter

Bonding orthodontic brackets to porcelain using different adhesives/enamel conditioners: a comparative study.
World J Orthod. 2005 Spring; 6(1):17-24.WJ

Abstract

AIM

To evaluate the use of new adhesive/primer materials, including an experimental self-etch primer and a cyanocrylate adhesive, to enhance the shear strength of orthodontic brackets bonded to porcelain surfaces.

MATERIAL AND METHODS

Sixty porcelain maxillary central incisor teeth were used. The teeth were randomly divided into four groups: group 1, teeth were etched with 37% phosphoric acid and the brackets were bonded with a composite adhesive; group 2, teeth were microetched, hydrofluoric acid and silane applied, and then the brackets were bonded with a composite adhesive; group 3, an acid-etch primer was used, then the brackets were bonded with the same composite adhesive as in the first 2 groups; group 4, teeth were etched with 35% phosphoric acid and the brackets were bonded with the cyanoacrylate adhesive.

RESULTS

The analysis of variance comparing the groups tested (F = 9.446) indicated that there was a significant difference between the 4 groups. The cyanoacrylate adhesive had the lowest shear bond strength (mean = 1.7 +/- 2.1 MPa), followed by the conventional bonding using a 37% phosphoric acid etch and composite (mean = 2.1 +/- 1.2 MPa). The use of Transbond after microetching, with the application of hydrofluoric acid and silane, provided the highest shear bond strength (mean = 5.5 +/- 2.7 MPa). Transbond used with the acid etch-primer had a lower bond strength (mean = 3.8 +/- 2.5 MPa), but was not significantly different from the microetch/hydrofluoric acid/silane group.

CONCLUSION

The results indicated that the use of a phosphoric acid etch with either a cyanoacrylate or composite adhesive to bond orthodontic brackets to porcelain surfaces produced significantly lower shear bond strength. Self-etch primers produced higher but less consistent shear bond strength for bonding orthodontic brackets. The most reliable bonding procedure to porcelain surfaces is through microetching with the use of hydrofluoric acid and a silane coupler before bonding, but this also produces the greatest damage to the porcelain surface.

Authors+Show Affiliations

Department of Orthodontics, College of Dentistry, University of Iowa, 220 Dental Science S, Iowa City, IA 52242-1001, USA Linda-keller@uiowa.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

15794038

Citation

Bishara, Samir E., et al. "Bonding Orthodontic Brackets to Porcelain Using Different Adhesives/enamel Conditioners: a Comparative Study." World Journal of Orthodontics, vol. 6, no. 1, 2005, pp. 17-24.
Bishara SE, Ajlouni R, Oonsombat C, et al. Bonding orthodontic brackets to porcelain using different adhesives/enamel conditioners: a comparative study. World J Orthod. 2005;6(1):17-24.
Bishara, S. E., Ajlouni, R., Oonsombat, C., & Laffoon, J. (2005). Bonding orthodontic brackets to porcelain using different adhesives/enamel conditioners: a comparative study. World Journal of Orthodontics, 6(1), 17-24.
Bishara SE, et al. Bonding Orthodontic Brackets to Porcelain Using Different Adhesives/enamel Conditioners: a Comparative Study. World J Orthod. 2005;6(1):17-24. PubMed PMID: 15794038.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bonding orthodontic brackets to porcelain using different adhesives/enamel conditioners: a comparative study. AU - Bishara,Samir E, AU - Ajlouni,Raed, AU - Oonsombat,Charuphan, AU - Laffoon,John, PY - 2005/3/30/pubmed PY - 2005/4/21/medline PY - 2005/3/30/entrez SP - 17 EP - 24 JF - World journal of orthodontics JO - World J Orthod VL - 6 IS - 1 N2 - AIM: To evaluate the use of new adhesive/primer materials, including an experimental self-etch primer and a cyanocrylate adhesive, to enhance the shear strength of orthodontic brackets bonded to porcelain surfaces. MATERIAL AND METHODS: Sixty porcelain maxillary central incisor teeth were used. The teeth were randomly divided into four groups: group 1, teeth were etched with 37% phosphoric acid and the brackets were bonded with a composite adhesive; group 2, teeth were microetched, hydrofluoric acid and silane applied, and then the brackets were bonded with a composite adhesive; group 3, an acid-etch primer was used, then the brackets were bonded with the same composite adhesive as in the first 2 groups; group 4, teeth were etched with 35% phosphoric acid and the brackets were bonded with the cyanoacrylate adhesive. RESULTS: The analysis of variance comparing the groups tested (F = 9.446) indicated that there was a significant difference between the 4 groups. The cyanoacrylate adhesive had the lowest shear bond strength (mean = 1.7 +/- 2.1 MPa), followed by the conventional bonding using a 37% phosphoric acid etch and composite (mean = 2.1 +/- 1.2 MPa). The use of Transbond after microetching, with the application of hydrofluoric acid and silane, provided the highest shear bond strength (mean = 5.5 +/- 2.7 MPa). Transbond used with the acid etch-primer had a lower bond strength (mean = 3.8 +/- 2.5 MPa), but was not significantly different from the microetch/hydrofluoric acid/silane group. CONCLUSION: The results indicated that the use of a phosphoric acid etch with either a cyanoacrylate or composite adhesive to bond orthodontic brackets to porcelain surfaces produced significantly lower shear bond strength. Self-etch primers produced higher but less consistent shear bond strength for bonding orthodontic brackets. The most reliable bonding procedure to porcelain surfaces is through microetching with the use of hydrofluoric acid and a silane coupler before bonding, but this also produces the greatest damage to the porcelain surface. SN - 1530-5678 UR - https://www.unboundmedicine.com/medline/citation/15794038/Bonding_orthodontic_brackets_to_porcelain_using_different_adhesives/enamel_conditioners:_a_comparative_study_ DB - PRIME DP - Unbound Medicine ER -