title: Efficacy of a new sealant to prevent white spot lesions during fixed orthodontic treatment : A 12-month, single-center, randomized controlled clinical trial.
abstract: OBJECTIVE
  White spot lesions (WSLs) are an undesirable side effect of fixed orthodontic appliance therapy and are reported to occur in 2-96 % of orthodontic patients. In this study, the efficacy of a new sealant to prevent WSLs during fixed orthodontic treatment was compared to a control group that did not receive sealant.
  
  
  METHODS
  For this 2-arm parallel-group randomized trial, 50 subjects aged 12-18 years (mean age 14.57 ± 2.04 years) were recruited from the orthodontics department at Mansoura University, Egypt. Eligibility criteria were no restorations, no active WSLs or caries, and adequate oral hygiene. Subjects were randomized in a 1:1 ratio to one of the two arms prior to undergoing fixed orthodontic treatment, namely a single application of SeLECT Defense™ sealant during the bracketing appointment or no sealant (control arm). Instructions and dentifrices for local home fluoridation regimen were identical in both groups. Oral hygiene was assessed using the Approximal Plaque Index (API) at specified time intervals. Dental photographs were taken for blinded WSLs assessment; inter- and intra-operator error were also calculated. Categorical data were tested using the χ2test, and a logistic regression model was adopted to detect associations between decalcification (WSLs), sealant application, and oral hygiene status.
  
  
  RESULTS
  Only excellent or good oral hygiene were independent prognostic factors for preventing severe WSLs (p = 0.035). No significant effect on caries incidence was observed for the sealant.
  
  
  CONCLUSIONS
  In combination with adequate oral hygiene SeLECT Defense™ helps to reduced the frequency of WSLs. However, the sealat showed no significant effect as sole preventive strategy.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Mansoura University, El Gomhoria Street, Mansoura, 35516, Egypt. shazamohammad@yahoo.com.
authors.forename: Shaza M
authors.initials: SM
authors.lastname: Hammad
authors.affiliation: Department of Orthodontics, University Medical Center Göttingen (UMG), Göttingen, Germany.|Private Orthodontic Practice, Hamburg, Germany.|Department of Orthodontics, Universidad de La Frontera (UFRO), Temuco, Chile.
authors.forename: Michael
authors.initials: M
authors.lastname: Knösel
mesh_terms: D000293:Adolescent; D002648:Child; D003731:Dental Caries / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D016910:Orthodontic Brackets / Q000009:adverse effects*; D009971:Orthodontics, Corrective / Q000009:adverse effects* / Q000295:instrumentation; D010895:Pit and Fissure Sealants / Q000145:classification / Q000627:therapeutic use*; D016037:Single-Blind Method; D016896:Treatment Outcome
chemical_list: D010895:Pit and Fissure Sealants
keywords: Bonding; Brackets; Demineralization; Prevention; SeLECT Defense™