title: Qualitative and quantitative evaluation of enamel after various stripping methods.
abstract: BACKGROUND
  In this study, we investigated ultramorphology, surface roughness, and microhardness of permanent and deciduous tooth enamel after various stripping methods.
  
  
  METHODS
  One hundred twenty deciduous and permanent teeth (n = 60 each) were used. Qualitative (scanning electron microscopy) and quantitative (surface roughness and microhardness tests) experiments were carried out in the following experimental groups: group 1, stripping disk; group 2, diamond-coated metal strip; group 3, stripping disk and Sof-Lex discs (3M-ESPE, Seefeld, Germany); group 4, diamond-coated metal strip and Sof-Lex discs; group 5 (chemical stripping), 37% orthophosphoric acid in conjunction with diamond-coated metal strip; group 6 (control), no stripping. Surface roughness values (Ra) for permanent and deciduous enamel were evaluated with Welch analysis of variance (ANOVA) and Tamhane tests, and Kruskal-Wallis and Mann-Whitney tests, respectively. Microhardness values were evaluated statistically with Kruskal-Wallis, 1-way ANOVA, and Duncan tests.
  
  
  RESULTS
  Deciduous and permanent teeth showed similar results in terms of surface roughness and surface morphology. Groups 3 and 4 had the smoothest deciduous and permanent enamel surfaces, whereas chemical stripping (group 5) produced the roughest surfaces in both enamel types. Stripping did not lead to a significant change in the microhardness of permanent enamel.
  
  
  CONCLUSIONS
  All stripping methods significantly roughened the enamel surfaces. Polishing the stripped surface with Sof-Lex discs decreased the roughness.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Baskent University, Ankara, Turkey.
authors.forename: Ayca
authors.initials: A
authors.lastname: Arman
authors.forename: S Burcak
authors.initials: SB
authors.lastname: Cehreli
authors.forename: Emre
authors.initials: E
authors.lastname: Ozel
authors.forename: Neslihan
authors.initials: N
authors.lastname: Arhun
authors.forename: Alev
authors.initials: A
authors.lastname: Cetinşahin
authors.forename: Mubin
authors.initials: M
authors.lastname: Soyman
mesh_terms: D000704:Analysis of Variance; D003743:Dental Enamel / Q000187:drug effects / Q000601:surgery* / Q000648:ultrastructure*; D019229:Dentition, Permanent; D006244:Hardness; D006801:Humans; D008855:Microscopy, Electron, Scanning; D019647:Oral Surgical Procedures / Q000295:instrumentation / Q000379:methods; D010756:Phosphoric Acids / Q000494:pharmacology; D018709:Statistics, Nonparametric; D013499:Surface Properties; D014094:Tooth, Deciduous
chemical_list: D010756:Phosphoric Acids; C030242:phosphoric acid