title: A prospective study on the clinical effectiveness of the stainless steel crown Herbst appliance.
abstract: OBJECTIVE
  To evaluate the clinical performance of the stainless steel crown Herbst (cHerbst) used as a single appliance for a single phase therapy.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Orthodontics, Lithuanian Unversity of Health Sciences, Lithuania. dalia.lat@gmail.com
authors.forename: Dalia
authors.initials: D
authors.lastname: Latkauskiene
authors.forename: Gundega
authors.initials: G
authors.lastname: Jakobsone
authors.forename: James A
authors.initials: JA
authors.lastname: McNamara
mesh_terms: D001294:Attitude to Health; D001641:Bicuspid; D002484:Cementation / Q000379:methods; D003188:Composite Resins / Q000737:chemistry; D003442:Crowns; D003722:Dental Alloys; D004868:Equipment Failure; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008312:Malocclusion, Angle Class II / Q000628:therapy; D008963:Molar; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D017289:Orthodontic Appliances, Functional; D017060:Patient Satisfaction; D011076:Polycarboxylate Cement / Q000737:chemistry; D011446:Prospective Studies; D012008:Recurrence; D019279:Resin Cements / Q000737:chemistry; D013193:Stainless Steel; D016896:Treatment Outcome; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; D013193:Stainless Steel; D008277:Magnesium Oxide; C040235:Ketac-cem; D015034:Zinc Oxide