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Can demineralized enamel surfaces be bonded safely?
Mehmet Akin1, Zeliha Muge Baka, Zehra Ileri
1Department of Orthodontics, Faculty of Dentistry, University of Selçuk , Konya, Turkey.
Acta Odontologica Scandinavica
|August 23, 2013
Summary
Enamel demineralization reduces orthodontic bracket bond strength. Both casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and microabrasion therapy can restore this strength, with CPP-ACP showing comparable results to the control group.
Area of Science:
- Dental Materials Science
- Orthodontic Materials Research
- Biomaterials Science
Background:
- Enamel demineralization compromises the shear bond strength (SBS) of orthodontic brackets.
- Restorative treatments are crucial for maintaining bracket adhesion after demineralization.
- Understanding the efficacy of different treatments on bond strength and enamel color is essential.
Purpose of the Study:
- To compare the effects of enamel demineralization, microabrasion, and CPP-ACP application on orthodontic bracket SBS.
- To evaluate the impact of these treatments on enamel color.
- To determine the optimal treatment for restoring bond strength in demineralized enamel.
Main Methods:
- Eighty human premolar teeth were divided into four groups: control, demineralized, demineralized with CPP-ACP, and demineralized with microabrasion.
- Orthodontic brackets were bonded to the prepared enamel surfaces.
- Shear bond strength was tested after thermocycling, and failure modes were analyzed.
- Enamel color changes were also assessed.
Main Results:
- Enamel demineralization significantly reduced bracket SBS.
- Both CPP-ACP application and microabrasion therapy significantly increased SBS in demineralized enamel.
- CPP-ACP application resulted in SBS comparable to the control group.
- All tested treatments significantly altered enamel color.
Conclusions:
- CPP-ACP application and microabrasion therapy effectively increase the reduced SBS of orthodontic brackets caused by enamel demineralization.
- These treatments offer viable solutions for improving bracket adhesion on compromised enamel surfaces.
- Further research should consider the aesthetic implications of these treatments on enamel color.
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