title: Effects of a Novel Dental Gel on Enamel Surface Recovery from Acid Challenge.
abstract: BACKGROUND
  Objective was to evaluate thein vivoeffects of a novel dental gel (Livionex gelR) vs. a comparison dental gel on the surfaces of pre-eroded enamel chips.
  
  
  METHODS
  On days 1-5, after toothbrushing with dentifrice, nine subjects each wore 8 enamel chips mounted on a palatal appliance for 4 h. Enamel blocks were pre-demineralized daily. After 2 day washout, subjects repeated the protocol using fresh chips and the second toothpaste on days 8-12. Samples were evaluated using electron microscopy.
  
  
  RESULTS
  Ten standardized enamel surface photomicrographs/sample (total 1440 images) were evaluated for signs of erosion visually and on a scale of 0-3 by 1 evaluator. No significant differences were found between the 2 groups (p>0.32, 95% C.I.). Minimal surface erosion on approx. 15% of sample area was visible in both groups.
  
  
  CONCLUSIONS
  The enamel surface appeared similar after usage of a test or control dentifrice. Based on this study, the test formulation did not affect enamel surface recovery from an erosive challenge.
  
  
  CONCLUSIONS
  Dentifrices can contribute to maintaining a healthy enamel surface. An all-natural dental gel formulation with novel anti-plaque mechanism achieved similar recovery from acid challenge to enamel as a control gel.
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Tracie
authors.initials: T
authors.lastname: Lam
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Jessica
authors.initials: J
authors.lastname: Ho
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Afarin Golabgir
authors.initials: AG
authors.lastname: Anbarani
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Lih-Huei
authors.initials: LH
authors.lastname: Liaw
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Thair
authors.initials: T
authors.lastname: Takesh
authors.affiliation: Beckman Laser Institute, University of California, Irvine, CA, USA.
authors.forename: Petra
authors.initials: P
authors.lastname: Wilder-Smith
keywords: De-mineralization; Dental gel; Dentifrice; Erosion; Re-mineralization; Scanning Electron Microscopy (SEM)