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[The shearing strength of titanium brackets depending on the coating procedure]
N Akin-Nergiz1, I Nergiz, U Platzer
1Abteilung für Kieferorthopädie, Universitätskrankenhaus Eppendorf, Hamburg.
Fortschritte Der Kieferorthopadie
|January 1, 1995
Summary
Titanium orthodontic brackets offer superior corrosion resistance. Specific silicoating methods, like N1, N2, and Rocatec, combined with an opaque layer, significantly enhance bracket bonding strength for clinical applications.
Area of Science:
- Biomaterials Science
- Dental Materials Science
- Orthodontic Materials
Background:
- Corrosion of traditional dental alloys can lead to intra-oral issues, including allergic reactions.
- Titanium's high corrosion resistance makes it a promising alternative for orthodontic bracket fabrication.
Purpose of the Study:
- To evaluate the shear bonding strength of titanium brackets with five different opaque and non-opaque coatings using a two-phase adhesive.
- To determine the optimal coating method for enhancing titanium bracket adhesion in orthodontic applications.
Main Methods:
- Five coating methods (N1, N2, Rocatec, Sebond, Silicoater Standard) were applied to titanium bracket bases.
- Brackets were bonded with a two-phase adhesive, thermocycled, and then subjected to shear bond strength testing.
Main Results:
- Silicoated titanium brackets generally showed clinically acceptable bonding, except for Sebond without an opaquer.
- Methods N1, N2, and Rocatec, particularly with the Visio-Gem opaquer, demonstrated superior bonding strength.
- The use of an appropriate opaquer layer significantly increased bond strength for Sebond MKV and Silicoater Standard.
Conclusions:
- Silicoating methods N1, N2, and Rocatec, in conjunction with an opaque layer, provide optimal bonding strength for titanium orthodontic brackets.
- The thin Visio-Gem opaque layer ensures good surface adaptation of the bracket to the tooth surface, enhancing clinical viability.