title: [Complications in the treatment of angle class II division 1 malocclusion].
abstract: OBJECTIVE
  This article describes a retrospective inventory of various categories of complications which occurred in a sample consecutively treated patients with Class II division 1 malocclusion.
  
  
  METHODS
  Retrospective, descriptive study.
  
  
  METHODS
  Treatment was performed with a headgear-activator and a edgewise appliance. All patients originate from one orthodontic specialist office and were between 10 and 14 years of age during treatment. From the group of 600 patients 100 (n = 100) were randomly selected for the study. A standard form was used for the inventory of the complications. The complications were divided into 5 categories: dental, skeletal, functional, psychosocial and multiple (two or more complications).
  
  
  RESULTS
  In the group of 100 patients no complications were found in 48 patients (48%); 52 patients showed complications (52%). From these 52 patients 29 showed one complication, 19 had 2 complications, 4 showed 3 complications. In total 79 complications occurred divided as follows: dental complications 23 (29.1%); skeletal complications 19 (24.1%); functional complications 15 (19.0%); psychosocial complications 22 (27.8%).
  
  
  CONCLUSIONS
  Complications occur very frequently in the treatment of Angle Class II division 1 malocclusions. These complications may occur in various combinations and may compromise the treatment result in a variable way.
authors.forename: H S
authors.initials: HS
authors.lastname: Duterloo
mesh_terms: D000293:Adolescent; D002508:Cephalometry; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D009967:Orthodontic Appliances / Q000009:adverse effects*; D012189:Retrospective Studies; D017211:Treatment Failure; D016896:Treatment Outcome
vernacular_title: Complicaties bij behandeling van Angle Klasse II/1-afwijkingen.