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Canine substitution using clear aligners—a case report and literature review

By:
Yinglu Jiang and  Li Mei  
Open Access
|May 2025

Figures & Tables

Figure 1.

Pre-treatment intra- and extra-oral images and intraoral scans.
Pre-treatment intra- and extra-oral images and intraoral scans.

Figure 2.

Pre-treatment lateral cephalogram.
Pre-treatment lateral cephalogram.

Figure 3.

Digital set-up showing the digital removal of the peg-shaped upper lateral incisors and the vertical attachments.
Digital set-up showing the digital removal of the peg-shaped upper lateral incisors and the vertical attachments.

Figure 4.

Intra- and extra-oral images and intraoral scans after the initial set of aligners.
Intra- and extra-oral images and intraoral scans after the initial set of aligners.

Figure 5.

Digital set-up showing the horizontal attachments.
Digital set-up showing the horizontal attachments.

Figure 6.

Intra- and extra-oral photos and intraoral scans at debond.
Intra- and extra-oral photos and intraoral scans at debond.

Figure 7.

Post-treatment lateral cephalogram.
Post-treatment lateral cephalogram.

Figure 8.

Superimposition of the pre- and post-treatment intraoral scans using the best-fit method and lateral cephalogram superimposed on the palatal plane (ANS-PNS), registered at ANS.
Superimposition of the pre- and post-treatment intraoral scans using the best-fit method and lateral cephalogram superimposed on the palatal plane (ANS-PNS), registered at ANS.

Post-treatment cephalometric values

ValueNormStandard deviation
SNA(dg)84.1824.6
SNB(dg)79.379.74.5
ANB(dg)4.722.9
Wits(mm)6.61.43.8
S-N(mm)77.271.52.9
NAP(dg)5.127.6
Go-Me(mm)79.775.94
ANS-PNS(mm)62.853.83.3
SN-FH(dg)10.710.22.8
FMPA(dg)18.921.65.7
MMPA(dg)26.822.77.6
Y-axis(dg)65.955.83.8
Facial axis(dg)92.387.54.8
Sn-Mx pl(dg)36.12.4
Sn-Mn pl(dg)2631.86.8
Ba-S-N(dg)129.2129.45.4
Na-Me(mm)126.9120.96.9
Na-ANS(mm)56.153.62.1
ANS-Me(mm)70.967.46.3
LAFH%(%)56.655.7
S-Go(mm)86.080.54
UIA(dg)100.8113.56.6
LIA(dg)95.490.69.1
Mn 1-APo(dg)23.924.25.5
Mn 1-APo(mm)-0.61.12.5
Interincisor(dg)137.2130.811.4

Pre-treatment cephalometric values

ValueNormStandard deviation
SNA(dg)83.580.94.1
SNB(dg)77.378.33.9
ANB(dg)6.22.52.4
Wits(mm)5.20.93.6
S-N(mm)64.270.33
NAP(dg)8.61.66.1
Go-Me(mm)67.272.64.2
ANS-PNS(mm)52.852.52.8
SN-FH(dg)10.410.72.3
FMPA(dg)23.3235.1
MMPA(dg)29.826.85.7
Y-axis(dg)68.156.43.5
Facial axis(dg)89.988.94.6
Sn-Mx pl(dg)3.96.82.9
Sn-Mn pl(dg)30.733.66.1
Ba-S-N(dg)134.4130.15.5
Na-Me(mm)106.3118.26.8
Na-ANS(mm)47.253.42.6
ANS-Me(mm)59.165.95.5
LAFH%(%)56.855.8
S-Go(mm)67.576.84.8
UIA(dg)104.91108.2
LIA(dg)9691.77.7
Mn 1-APo(dg)24.724.65.1
Mn 1-APo(mm)0.11.22.7
Interincisor(dg)129.2131.311
DOI: https://doi.org/10.2478/aoj-2025-0009 | Journal eISSN: 2207-7480 | Journal ISSN: 2207-7472
Language: English
Page range: 130 - 139
Submitted on: Dec 1, 2024
Accepted on: Mar 1, 2025
Published on: May 3, 2025
Published by: Australian Society of Orthodontists Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year

© 2025 Yinglu Jiang, Li Mei, published by Australian Society of Orthodontists Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.