Open AccessRoughness Measurement of Dental Materials
Author(s) -
Assen Shulev,
Ilia Roussev,
Simeon Karpuzov,
Georgi Stoilov,
Detelina Ignatova,
Constantin von See,
Gergo Mitov
Publication year - 2016
Publication title -
journal of theoretical and applied mechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.2
H-Index - 8
eISSN - 1314-8710
pISSN - 0861-6663
DOI - 10.1515/jtam-2016-0008
Subject(s) - speckle pattern , polishing , grinding , surface roughness , surface finish , materials science , cubic zirconia , dental ceramics , autocorrelation , optics , dental porcelain , ceramic , composite material , mathematics , physics , statistics
This paper presents a roughness measurement of zirconia ceramics, widely used for dental applications. Surface roughness variations caused by the most commonly used dental instruments for intraoral grinding and polishing are estimated. The applied technique is simple and utilizes the speckle properties of the scattered laser light. It could be easily implemented even in dental clinic environment. The main criteria for roughness estimation is the average speckle size, which varies with the roughness of zirconia. The algorithm used for the speckle size estimation is based on the normalized autocorrelation approach.