Home Current issue Instructions
About us Archives Login 
Editorial board Search articles Contact us
Home Print this page Email this page Users Online: 246
ORIGINAL ARTICLE
Year : 2012  |  Volume : 1  |  Issue : 3  |  Page : 187-191

Dental enamel roughness with different acid etching times: Atomic force microscopy study


1 Department of Orthodontics, Pontifical Catholic University of Paraná, Curitiba, Brazil
2 Department of Physics, Nanostructured Devices Laboratory, Federal University of Paraná, Curitiba, Brazil
3 Department of Orthodontics, Pontifical Catholic University of Paraná, Curitiba, Brazil; Diplomate of Brazilian Board of Orthodontics and Dentofacial Orthopedics, Post-Doctoral Fellowship at Center of Advanced Dental Education of Saint Louis University, USA

Correspondence Address:
Orlando Motohiro Tanaka
R. Imaculada Conceição, 1155, CEP 80215-901 - Curitiba, Pr, Brazil

Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2278-9626.105385

Rights and Permissions

Objective: An important characteristic of human dental enamel not yet studied in detail is its surface roughness in mesoscopic scale. This study evaluated quantitatively and qualitatively the surface topography of acid etched enamel with different etching times. Materials and Methods: Ninety-six human maxillary bicuspids were randomly distributed into three groups (n=32): T0 (control), pumiced; T15, 35% phosphoric acid etched enamel for 15 s; T30, 35% phosphoric acid etched enamel for 30 s. Roughness measurements Ra, Rz and root mean square (RMS) and 3D images of enamel's topography were obtained with atomic force microscopy (AFM), which is a powerful technique to obtain direct measurements on microscale features. Results and Conclusions: Roughness variables Ra, Rz and RMS presented statistically significant differences to all groups (P<0.000), with values increasing with etching time. This increase was greater from T0 to T15 than from T15 to T30. Enamel surface alterations T15 to T30 occur mainly due to increase in height and deepening of prisms central region.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed10940    
    Printed127    
    Emailed1    
    PDF Downloaded1209    
    Comments [Add]    
    Cited by others 6    

Recommend this journal