title: Analysis of Dental Enamel Surface Submitted to Fruit Juice Plus Soymilk by Micro X-Ray Fluorescence: In Vitro Study.
abstract: OBJECTIVE
  This paper aimed to analyze the in vitro industrialized fruit juices effect plus soy to establish the erosive potential of these solutions.
  
  
  METHODS
  Seventy bovine incisors were selected after being evaluated under stereomicroscope. Their crowns were prepared and randomly divided into 7 groups, using microhardness with allocation criteria. The crowns were submitted to the fruit juice plus soy during 15 days, twice a day. The pH values, acid titration, and Knoop microhardness were recorded and the specimens were evaluated using X-ray microfluorescence (µXRF).
  
  
  RESULTS
  The pH average for all juices and after 3 days was significantly below the critical value for dental erosion. In average, the pH value decreases 14% comparing initial time and pH after 3 days. Comparing before and after, there was a 49% microhardness decrease measured in groups (p < 0.05). Groups G1, G2, G5, and G6 are above this average. The analysis by μXRF showed a decrease of approximately 7% Ca and 4% P on bovine crowns surface. Florida (FL) statistical analysis showed a statistically significant 1 difference between groups. Thus, a tooth chance to suffer demineralization due to industrialized fruit juices plus soy is real.
authors.affiliation: Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Avenida General Newton Cavalcante 1650, Tabatinga, 54753-020 Camaragibe, PE, Brazil.
authors.forename: Janaína Salmos
authors.initials: JS
authors.lastname: Brito
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Alexandrino
authors.initials: A
authors.lastname: Santos Neto
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Luciano
authors.initials: L
authors.lastname: Silva
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Rebeca
authors.initials: R
authors.lastname: Menezes
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Natália
authors.initials: N
authors.lastname: Araújo
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Vanda
authors.initials: V
authors.lastname: Carneiro
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Lara Magalhães
authors.initials: LM
authors.lastname: Moreno
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Jéssica
authors.initials: J
authors.lastname: Miranda
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Pâmella
authors.initials: P
authors.lastname: Álvares
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Giselle
authors.initials: G
authors.lastname: Nevares
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Felipe
authors.initials: F
authors.lastname: Xavier
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: José Alcides
authors.initials: JA
authors.lastname: Arruda
authors.affiliation: School of Dentistry, Federal University of Alagoas, Maceió, AL, Brazil.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Bessa-Nogueira
authors.affiliation: School of Dentistry, Federal University of Alagoas, Maceió, AL, Brazil.
authors.forename: Natanael
authors.initials: N
authors.lastname: Santos
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Queiroz
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Sobral
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Márcia
authors.initials: M
authors.lastname: Silveira
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Diana
authors.initials: D
authors.lastname: Albuquerque
authors.affiliation: Health Education Department, Federal University of Sergipe, São Cristóvão, SE, Brazil.
authors.forename: Marleny
authors.initials: M
authors.lastname: Gerbi
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis; D002417:Cattle; D003743:Dental Enamel / Q000187:drug effects*; D000067030:Fruit and Vegetable Juices; D006244:Hardness; D006863:Hydrogen-Ion Concentration; D007477:Ions; D010758:Phosphorus / Q000032:analysis; D041942:Soy Milk / Q000494:pharmacology*; D013052:Spectrometry, X-Ray Emission
chemical_list: D007477:Ions; D010758:Phosphorus; D002118:Calcium