title: [Resorption of root cement studied with resorption indices].
abstract: OBJECTIVE
  The aim of this work was to assess the influence of orthodontic treatment with fixed thin wire appliances on hard tissues of the tooth.
  
  
  METHODS
  The effect of mechanical forces from the fixed appliance on root cement was studied during and after orthodontic treatment. Root cement was examined microscopically following extraction of the affected tooth.
  
  
  RESULTS
  The study group comprised 35 patients who underwent pantomography because of possible root resorption during orthopedic treatment. Reduced root length was noted in 30 patients (85.7%). In most cases, apical resorption was noticed in upper (84.3%) and lower central incisors (61.4%).
  
  
  CONCLUSIONS
  The results of the it can be seen on photographs from the optical microscope that root cement reacted differently to forces of traumatic occlusion. Resorptive loss reached as far as the dentine border.
authors.affiliation: Katedra i Zakład Ortodoncji Pomorskiej Akademii Medycznej, Szczecin.
authors.forename: Eliza
authors.initials: E
authors.lastname: Górniak
mesh_terms: D003739:Dental Cementum / Q000000981:diagnostic imaging* / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D009967:Orthodontic Appliances / Q000009:adverse effects*; D009971:Orthodontics, Corrective / Q000009:adverse effects* / Q000379:methods; D011862:Radiography, Panoramic; D012391:Root Resorption / Q000000981:diagnostic imaging* / Q000209:etiology; D019227:Tooth Apex / Q000000981:diagnostic imaging; D019228:Tooth Crown / Q000000981:diagnostic imaging; D014087:Tooth Movement Techniques / Q000295:instrumentation / Q000379:methods*; D014092:Tooth Root / Q000000981:diagnostic imaging*