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Comparison of the shear bond strength of reconditioned metal brackets used in indirect bonding: an in vitro pilot study

Seong-Sik Kim

Seong-Sik Kim

Department of Orthodontics, Dental Research Institute, and Dental and Life Science Institute, School of Dentistry, Pusan National University,South Korea
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Kim, Seong-Sik
, 
Youn-Kyung Choi

Youn-Kyung Choi

Department of Orthodontics, Pusan National University HospitalSouth Korea
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Choi, Youn-Kyung
, 
Yong-Il Kim

Yong-Il Kim

Department of Orthodontics, Dental Research Institute, and Dental and Life Science Institute, School of Dentistry, Pusan National University,South Korea
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Kim, Yong-Il
, 
Soo-Byung Park

Soo-Byung Park

Department of Orthodontics, Dental Research Institute, and Dental and Life Science Institute, School of Dentistry, Pusan National University,South Korea
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Park, Soo-Byung
 and 
Sung-Hun Kim

Sung-Hun Kim

Department of Orthodontics, Dental Research Institute, and Dental and Life Science Institute, School of Dentistry, Pusan National University,South Korea
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Kim, Sung-Hun
  
Jan 30, 2023
Comparison of the shear bond strength of reconditioned metal brackets used in indirect bonding: an in vitro pilot study's Cover Image
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Published Online: Jan 30, 2023
Page range: 27 - 34
Received: Sep 01, 2022
Accepted: Dec 01, 2022
DOI: https://doi.org/10.2478/aoj-2023-0001
Keywords
© 2023 Seong-Sik Kim et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1.

Dental cast model.
Dental cast model.

Figure 2.

Transfer tray made by vacuum formed stent.
Transfer tray made by vacuum formed stent.

Figure 3.

Shear bond strength test.
Shear bond strength test.

Figure 4.

Boxplot diagram of SBS by group. See Table I for group description.
Boxplot diagram of SBS by group. See Table I for group description.

Figure 5.

Microscopic photos of bracket bases. See Table I for group description. Magnification ×2.5.
Microscopic photos of bracket bases. See Table I for group description. Magnification ×2.5.

Figure 6.

Scanning electron micrographs of bracket bases. See Table I for group description. Magnification ×100.
Scanning electron micrographs of bracket bases. See Table I for group description. Magnification ×100.

Descriptive statistics of shear bond strength_ See Table I for group description_

Shear bond strength(MPa)
Group Mean SD Minimum Maximum N Scheffe*
I 9.1 3.0 5.4 13.6 24 A
II 16.8 2.1 13.3 18.2 24 B
III 21.0 2.8 16.9 25.8 24 C
IV 21.4 3.0 16.7 26.0 24 C
V 20.2 2.9 15.9 25.8 24 C
VI 16.7 1.8 15.3 19.4 24 B
VII 11.2 2.2 7.7 12.9 24 A

Frequency distributions of adhesive remnant index scores_ See Table I for group description_

ARI score
Group 1 2 3 4 5 n
I 14 10 0 0 0 24
II 10 8 6 0 0 24
III 2 12 10 0 0 24
IV 3 12 9 0 0 24
V 4 13 7 0 0 24
VI 9 9 6 0 0 24
VII 13 11 0 0 0 24

Group description_

Group Description
I No treatment
II Sandblasting for 3 sec
III Sandblasting for 6 sec
IV Sandblasting for 9 sec
V Sandblasting for 12 sec
VI Low speed round bur
VII Conditioned with adhesion booster

Adhesive remnant index criteria_

Score The evaluation criteria(remained adhesive on the tooth)
1 All
2 More than 90%
3 Between 10 and 90%
4 Less than 10%
5 No adhesive
Language:
English
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Journal Subjects:
Medicine, Basic Medical Science, Basic Medical Science, other
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