title: In vivo evaluation of fluoride dentifrice and diet control on the demineralization/remineralization process using laser readouts at the margin of the orthodontic bracket/enamel interface.
abstract: OBJECTIVE
  To evaluate, in vivo, the effect of fluoride dentifrice and diet control on the demineralization/remineralization processes at the margin of bracket/enamel interface bonded with four different bonding materials, using optical microscopy and fluorescent laser (DIAGNOdent).
  
  
  METHODS
  Premolars in 35 subjects (11 to 20 years old) were divided into Group 1 (n = 15) and Group 2 (n = 20). Four bracket/enamel interfaces (near points) and four points at a distance of 2 mm (distant points) were observed. Evaluations were made at the following times: 15 days before bracket bonding (T0), on day of bonding (T1), 1 week after bonding (T2), and 4 weeks after bonding (T3). Subjects received fluoride dentifrice, and toothbrush and were instructed to brush 3x/day, after main meals. Group 1 received the instructions at T1 and Group 2 at T0 and these were reinforced weekly. The Microarch brackets were bonded with four materials: Transbond XT; Concise Ortodôntico; Fuji Ortho LC and Monolok2. DIAGNOdent laser readouts were used for comparison.
  
  
  RESULTS
  Data were statistically analyzed by Mann-Whitney, Wilcoxon and Friedman tests (P < 0.05). Higher readouts were found at nearer points than at distant points; Group 2 presented lower readouts than Group 1; No differences were observed among bonding materials.
authors: Vanessa Salvadego
authors: VS
authors: De Queiroz
authors: Paulo Roberto Aranha
authors: PR
authors: Nouer
authors: Cínthia Pereira Machado
authors: CP
authors: Tabchoury
authors: Ynara Bosco De Oliveira
authors: YB
authors: Lima-Arsati
authors: Darcy Flávio
authors: DF
authors: Nouer
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000293:Adolescent; D000538:Aluminum Silicates / Q000737:chemistry; D001641:Bicuspid / Q000187:drug effects / Q000648:ultrastructure; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002327:Cariostatic Agents / Q000627:therapeutic use*; D002648:Child; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003743:Dental Enamel / Q000187:drug effects / Q000648:ultrastructure*; D003802:Dentifrices / Q000627:therapeutic use*; D019422:Dietary Sucrose / Q000008:administration & dosage; D005247:Feeding Behavior; D005453:Fluorescence; D005459:Fluorides / Q000627:therapeutic use*; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D007834:Lasers; D016910:Orthodontic Brackets; D019279:Resin Cements / Q000737:chemistry; D017001:Tooth Demineralization / Q000517:prevention & control*; D014089:Tooth Remineralization / Q000379:methods*; D014099:Toothbrushing / Q000295:instrumentation; D055815:Young Adult
chemical_list: D000180:Acrylic Resins; D000538:Aluminum Silicates; D002327:Cariostatic Agents; D003738:Dental Cements; D003802:Dentifrices; D019422:Dietary Sucrose; C095451:Fuji Ortho LC; D005899:Glass Ionomer Cements; D019279:Resin Cements; C477790:Transbond XT; D017438:Bisphenol A-Glycidyl Methacrylate; D005459:Fluorides