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An Investigation about the Influence of Bleaching on Shear Bond Strength of Orthodontic Brackets and on Enamel Colour.

Immerz I, Proff P, Roemer P, Reicheneder C, Faltermeier A - ISRN Dent (2012)

Bottom Line: The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift.It can be concluded that peroxide pre-treatment does result in colour differences of teeth.Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthodontics, University Medical Centre of Regensburg, Franz-Joseph-Strauss Allee 11, 93042 Regensburg, Germany.

ABSTRACT
The aim of the study was to investigate the effect of bleaching on the colouration of tooth enamel and shear bond strength of orthodontic ceramic brackets based upon current whitening practice. The bleaching and bonding techniques were performed on extracted bovine teeth for the investigation of their colorimetric spectrum and the adhesive bond strength on surface enamel. One group was designated as the control group with no pre-treatment. Another group was treated with a 45% hydrogen peroxide solution prior to bonding. The difference in colour was expressed as the Euclidian distance ΔE. The resulting shear bond strength was analyzed and evaluated by scores of Adhesion Remnant Index. Statistical analysis was performed using the Kruskall-Wallis and post-hoc test. The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift. Furthermore, statistically there was no significant difference noted in bonding strength between non-treated surfaces and those treated with peroxide. It can be concluded that peroxide pre-treatment does result in colour differences of teeth. Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

No MeSH data available.


Related in: MedlinePlus

A total of 100 bovine incisors were divided into a control Group I (n = 50) and a Group II (n = 50). Colour measurements captured colour data of unbleached, bleached, and debonded teeth status.
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Related In: Results  -  Collection


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fig1: A total of 100 bovine incisors were divided into a control Group I (n = 50) and a Group II (n = 50). Colour measurements captured colour data of unbleached, bleached, and debonded teeth status.

Mentions: The Group I, unbleached, colour measurements provided two data sets (data pairs) consistent with the original and debonded condition (Figure 1). The Group II, bleached, three colorimetric recordings were taken (data triplets) in the midfacial location prior to bleaching subsequent to bleaching and after debonding. Colour differences are measured as the Euclidian distance (ΔE) in three-dimensional space [11, 12].


An Investigation about the Influence of Bleaching on Shear Bond Strength of Orthodontic Brackets and on Enamel Colour.

Immerz I, Proff P, Roemer P, Reicheneder C, Faltermeier A - ISRN Dent (2012)

A total of 100 bovine incisors were divided into a control Group I (n = 50) and a Group II (n = 50). Colour measurements captured colour data of unbleached, bleached, and debonded teeth status.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3318886&req=5

fig1: A total of 100 bovine incisors were divided into a control Group I (n = 50) and a Group II (n = 50). Colour measurements captured colour data of unbleached, bleached, and debonded teeth status.
Mentions: The Group I, unbleached, colour measurements provided two data sets (data pairs) consistent with the original and debonded condition (Figure 1). The Group II, bleached, three colorimetric recordings were taken (data triplets) in the midfacial location prior to bleaching subsequent to bleaching and after debonding. Colour differences are measured as the Euclidian distance (ΔE) in three-dimensional space [11, 12].

Bottom Line: The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift.It can be concluded that peroxide pre-treatment does result in colour differences of teeth.Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthodontics, University Medical Centre of Regensburg, Franz-Joseph-Strauss Allee 11, 93042 Regensburg, Germany.

ABSTRACT
The aim of the study was to investigate the effect of bleaching on the colouration of tooth enamel and shear bond strength of orthodontic ceramic brackets based upon current whitening practice. The bleaching and bonding techniques were performed on extracted bovine teeth for the investigation of their colorimetric spectrum and the adhesive bond strength on surface enamel. One group was designated as the control group with no pre-treatment. Another group was treated with a 45% hydrogen peroxide solution prior to bonding. The difference in colour was expressed as the Euclidian distance ΔE. The resulting shear bond strength was analyzed and evaluated by scores of Adhesion Remnant Index. Statistical analysis was performed using the Kruskall-Wallis and post-hoc test. The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift. Furthermore, statistically there was no significant difference noted in bonding strength between non-treated surfaces and those treated with peroxide. It can be concluded that peroxide pre-treatment does result in colour differences of teeth. Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

No MeSH data available.


Related in: MedlinePlus