The evaluation of surface roughness and polishing time between polishing systems

Ye-Mi Kim; Su-Jung Shin; Min-Ju Song; Jeong-Won Park

doi:10.5395/JKACD.2011.36.2.119

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Kim, Shin, Song, and Park: The evaluation of surface roughness and polishing time between polishing systems

Basic Research

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2011; 36(2): 119-124.

Published online: 31 March 2011

DOI: https://doi.org/10.5395/JKACD.2011.36.2.119

The evaluation of surface roughness and polishing time between polishing systems

Ye-Mi Kim, DDS, MS¹, Su-Jung Shin, DDS, MS², Min-Ju Song, DDS, MS², Jeong-Won Park, DDS, PhD²

Clinical lecturer

Assistant Professor

Clinical lecturer

Associate Professor

¹Department of Dentistry, Ewha Woman's University Mokdong Hospital, Seoul, Korea.

²Department of Conservative Dentistry, Gangnam Severance Hospital, Yonsei University College of Dentistry, Seoul, Korea.

Correspondence to Jeong-Won Park, DDS, PhD. Associate Professor, Department of Conservative Dentistry, Gangnam Severance Hospital, Yonsei University College of Dentistry, 146-92 Dogok-dong Gangnam-gu, Seoul, Korea 135-720. TEL, +82-2-2019-1350; FAX, +82-2-3463-4052; pjw@yuhs.ac

Received 19 January 2011 Revised 22 February 2011 Accepted 23 February 2011

Abstract

Objectives

The purpose of this experiment was to evaluate four different polishing systems of their polishability and polishing time.

Materials and Methods

4 mm diameter and 2 mm thickness Teflon mold was made. Z-250 (3M ESPE) hybrid composite resin was slightly overfilled and pressed with slide glass and cured with Optilux 501 for 40 sec each side. Then the surface roughness (glass pressed: control group) was measured with profilometer. One surface of the specimen was roughened by #320 grit sand paper and polished with one of the following polishing systems; Sof-Lex (3M ESPE), Jiffy (Ultradent), Enhance (Dentsply/Caulk), or Pogo (Dentsply/Caulk). The surface roughness and the total polishing time were measured. The results were analyzed with one-way ANOVA and Duncan's multiple range test.

Results

The surface roughness was lowest in Pogo, and highest in Sof-Lex. Polishing times were shortest with Pogo, and followed by the Sof-Lex, Enhance and Jiffy.

Conclusions

One-step polishing system (Pogo) is very effective to get the smooth surface in a short time, therefore it can be recommended for final polishing system of the restoration.

Keywords: Dental composite, One-step polishing, Polishing, Surface roughness

Figures and Tables

Figure 1

Surface roughness (Ra, µm) of composite resins with 4 different polishing systems.

Figure 2

Polishing time (seconds) of 4 different polishing systems.

Figure 3

SEM image of the polished composite surface with each polishing system (left ×100, right ×10,000). SEM, scanning electron microscopr.

Table 1

Polishing systems used in this experiment

Table 2

Surface roughness and polishing time for each polishing system (n = 13)

Different superscript in the same column means statistically significant difference (p < 0.05).

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