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Merck
  • A prospective study on the clinical effectiveness of the stainless steel crown Herbst appliance.

A prospective study on the clinical effectiveness of the stainless steel crown Herbst appliance.

Progress in orthodontics (2012-10-02)
Dalia Latkauskiene, Gundega Jakobsone, James A McNamara
要旨

To evaluate the clinical performance of the stainless steel crown Herbst (cHerbst) used as a single appliance for a single phase therapy. A total of 180 consecutive Class II patients were treated with cHerbst for one year and followed up one year after the end of treatment. Class I relationship was achieved in all 175 patients who finished the functional phase of treatment, 58 patients continued treatment with fixed appliances while 21 patients (12%) showed relapse. Seventy two patients (41.1%) obtained and maintained stable Class I relationship one year after treatment with the cHerbst appliance used as a single appliance. Altogether 46 episodes of appliance breakages were observed and most of them could be repaired at the chair side. Patients' questionnaire revealed that in general the appliance was easy to tolerate and did not cause esthetic or functional problems. The crown Herbst appliance is a viable therapeutical option in patients with Class II malocclusions and it is characterized by low complication rate along with good patient compliance.

材料
製品番号
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製品内容

Sigma-Aldrich
酸化マグネシウム, ACS reagent, 97%
Sigma-Aldrich
酸化マグネシウム, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 530, light, 98.0-100.5% (calc. for dried substance)
Sigma-Aldrich
酸化マグネシウム, ≥99% trace metals basis, -325 mesh
Sigma-Aldrich
酸化マグネシウム, nanopowder, ≤50 nm particle size (BET)
Sigma-Aldrich
酸化マグネシウム, ≥99.99% trace metals basis
Sigma-Aldrich
酸化マグネシウム, light, 95%
Sigma-Aldrich
酸化マグネシウム, -10-+50 mesh, 98%
Sigma-Aldrich
酸化マグネシウム, 99.99% trace metals basis
Sigma-Aldrich
酸化マグネシウム, (single crystal substrate), ≥99.9% trace metals basis, <100>, L × W × thickness 10 mm × 10 mm × 0.5 mm
Sigma-Aldrich
酸化マグネシウム, SAJ special grade, ≥99.0%
Sigma-Aldrich
酸化マグネシウム, BioUltra, ≥97.0% (calcined substance, KT)
Sigma-Aldrich
酸化マグネシウム, tested according to Ph. Eur., heavy
Sigma-Aldrich
酸化マグネシウム, SAJ first grade, ≥98.0%