title: White spot lesion formation after treatment with full-coverage rapid maxillary expanders.
abstract: BACKGROUND
  The aim of this study was to evaluate whether treatment with full-coverage bonded acrylic splint expanders causes formation of white spot lesions using quantitative light-induced fluorescence.
  
  
  METHODS
  The experimental group underwent rapid maxillary expansion (RME) (n = 16; 6 boys, 10 girls; mean age, 14.1 ± 2.2 years), and the control group received no orthodontic treatment (n = 17; 9 men, 8 women; mean age, 20.7 ± 1.1 years). Quantitative light-induced fluorescence images of the RME patients were taken before cementation and after decementation of the appliances. The images of the control group comprised quantitative light-induced fluorescence images taken 3 months apart. Four parameters were calculated for 10 anterior teeth.
  
  
  RESULTS
  Between cementation and decementation, statistically significant differences were found in all 4 parameters in the RME group, whereas no significant changes were found in any parameters in the control group. A comparison of the measured parameters between the RME and control groups showed statistically significant differences.
  
  
  CONCLUSIONS
  Patients treated with a full-coverage bonded appliance tended to develop more white spot lesions than did the control subjects.
authors.affiliation: Associate professor, Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey. Electronic address: dtahmetyagci@hotmail.com.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Yagci
authors.affiliation: Research assistant, Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Yasemin Nur
authors.initials: YN
authors.lastname: Korkmaz
authors.affiliation: Assistant professor, Department of Orthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey.
authors.forename: Suleyman Kutalmis
authors.initials: SK
authors.lastname: Buyuk
authors.affiliation: Prosthodontist, Department of Prosthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Filiz
authors.initials: F
authors.lastname: Yagci
authors.affiliation: Orthodontist, Osmanli Dental Center, Republic of Turkey Ministry of Health, Ankara, Turkey.
authors.forename: Aykan Onur
authors.initials: AO
authors.lastname: Atilla
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000293:Adolescent; D001641:Bicuspid / Q000473:pathology; D002484:Cementation / Q000379:methods; D002648:Child; D003481:Cuspid / Q000473:pathology; D003731:Dental Caries / Q000175:diagnosis / Q000209:etiology*; D017005:Dental Debonding / Q000379:methods; D003743:Dental Enamel / Q000473:pathology; D003764:Dental Materials / Q000737:chemistry; D005260:Female; D005453:Fluorescence; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007180:Incisor / Q000473:pathology; D008027:Light; D008297:Male; D016382:Orthodontic Appliance Design; D010155:Palatal Expansion Technique / Q000295:instrumentation*; D010781:Photography / Q000379:methods; D055815:Young Adult
chemical_list: D000180:Acrylic Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements