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A comparative study of roughness of enamel surface to various interdental enamel stripping methods in vitro

Korean Journal of Orthodontics 1999³â 29±Ç 4È£ p.483 ~ 490
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Abstract

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4. Ç¥¸é È°Åà ¸ñÀûÀ¸·Î »ç¿ëµÈ ¹Ì¼¼ ¿¬¸¶Á¦´Â Ç¥¸é °ÅÄ¥±â³ª Ç¥¸éÀÇ ¿¬¸¶ ¶Ç´Â °¡°øÁ¤µµ¿¡
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#ÃÊ·Ï#
Interdental enamel stripping is an usual method for correction of abnormal tooth shape
and tooth size discrepancy which is one of the etiologic factors of malocclusion.
Clinically it is useful to correct the minor crowding in anterior teeth and posterior
occlusion during finishing stage of orthodontic treatment. But this procedure has risks
such as irreversible tooth reduction and remaining roughness of enamel surface can
accumulate plaque which can evoke periodontal problem.
Even if various methods were introduced to minimize the enamel surface roughness,
their evaluation was limited in morphologic differences by scanning electronic
microscope(SEM).
The purpose of this study was to compare the various interdental enamel stripping
method by SEM and to quantify the difference of surface roughness by use of
Surfcorder SEF-30D(Kosaka Lab. Ltd.) which can measure the roughness of surface.
The stripping methods were divided into mechanical and mechanical-chemical method.
Air-rotor stripping and separating strip were used for mechanical stripping and 37%
phosphoric acid was used for chemical stripping. The enamel surface roughness after
mechanical or mechanical-chemical stripping of interproximal surfaces of premolars
which were extracted for orthodontic purpose were measured and compared by means of
SEM and Surfcorder , the results were as follows.
1. Enamel surface of primary treated by coarse diamond bur and separating strip groups
showed highest value of roughness.
2. To compare the primary treated groups between mechanical and mechanical-chemical
method, the latter group showed lower value of roughness remarkably.
3. Mechanical stripping groups which were treated both coarse and fine instrument
showed lower value of roughness as much as non treated group.
4. The use of pumice for final polishing did not show significantly smoothening the
stripped enamel surface any more.

Å°¿öµå

Ä¡°£¹ý¶ûÁú»èÁ¦; Ç¥¸é°ÅÄ¥±â; Ç¥¸éÁ¶µµÃøÁ¤; interdental enamel stripping; measurement of surface roughness;

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