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Orthofile®: a new approach for mechanical interproximal reduction : a scanning electron microscopic enamel evaluation
L Lombardo1, M P Guarneri, P D'Amico
1Department of Orthodontics, University of Ferrara, Ferrara, Italy, lulombardo@tiscali.it.
Summary
The 25-µm abrasive strip effectively reduces tooth enamel more than the 15-µm strip. Polishing after interproximal reduction is crucial for minimizing abrasions and achieving optimal results.
Area of Science:
- Dental materials science
- Orthodontic techniques
Background:
- Interproximal reduction (IPR) is a common orthodontic procedure.
- Abrasive strips are used for IPR, but their effectiveness and impact on tooth structure vary.
Purpose of the Study:
- To evaluate the enamel stripping efficacy of two abrasive strip grades (15-µm and 25-µm) on different teeth.
- To assess the impact of strip wear (first vs. tenth use) on efficacy.
- To determine the time required for specific amounts of interproximal reduction (0.10, 0.20, 0.30 mm).
Main Methods:
- In vitro study using extracted teeth mounted on models.
- Simulated oral conditions using artificial saliva.
- Tested 15-µm and 25-µm abrasive strips (Orthofile®).
- Examined stripped tooth surfaces using Scanning Electron Microscopy (SEM).
Main Results:
- The 25-µm-grain strip demonstrated higher effectiveness than the 15-µm-grain strip across all tooth types.
- Finishing with polishing strips significantly reduced abrasions and irregularities, especially after using the 25-µm strip.
- Complete polishing of the abraded area is essential for optimal outcomes.
Conclusions:
- Abrasive strip efficacy is directly related to grain size and inversely related to wear.
- The tested system offers a rapid and effective method for interproximal reduction.
- Further research is needed to compare this system with alternative procedures.
