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Modified single rigid vacuum-formed indirect bonding trays for lingual bracket application: a case report

Anh Viet Nguyen

Anh Viet Nguyen

Faculty of Dentistry, PHENIKAA UniversityHa Dong, Vietnam
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Nguyen, Anh Viet
 y 
Anh Thuy Nguyen

Anh Thuy Nguyen

Private Practice, Viet Anh Orthodontic ClinicNam Tu Liem, Vietnam
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Nguyen, Anh Thuy
  
24 sept 2024
Modified single rigid vacuum-formed indirect bonding trays for lingual bracket application: a case report's Cover Image
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Publicado en línea: 24 sept 2024
Páginas: 40 - 50
Recibido: 01 abr 2024
Aceptado: 01 jul 2024
DOI: https://doi.org/10.2478/aoj-2024-0020
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© 2024 Anh Viet Nguyen et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1.

Pre-treatment extraoral and intraoral photographs.
Pre-treatment extraoral and intraoral photographs.

Figure 2.

Pre-treatment panoramic and cephalometric radiographs and tracing graphs.
Pre-treatment panoramic and cephalometric radiographs and tracing graphs.

Figure 3.

Digital orthodontic setup and bracket placement.
Digital orthodontic setup and bracket placement.

Figure 4.

Virtual blocking out of bracket undercuts to facilitate rigid tray removal and 3D printing of models with ideal bracket positions.
Virtual blocking out of bracket undercuts to facilitate rigid tray removal and 3D printing of models with ideal bracket positions.

Figure 5.

Fabrication of single rigid vacuum-formed indirect bonding trays and insertion of lingual brackets.
Fabrication of single rigid vacuum-formed indirect bonding trays and insertion of lingual brackets.

Figure 6.

Intraoral photographs at the nineteenth month.
Intraoral photographs at the nineteenth month.

Figure 7.

Post-treatment extraoral and intraoral photographs.
Post-treatment extraoral and intraoral photographs.

Figure 8.

Post-treatment panoramic and cephalometric radiographs and tracing graphs.
Post-treatment panoramic and cephalometric radiographs and tracing graphs.

Figure 9.

General and regional lateral cephalometric superimpositions: black, pre-treatment; red, post-treatment.
General and regional lateral cephalometric superimpositions: black, pre-treatment; red, post-treatment.

Figure 10.

Superimpositions of the post-treatment intraoral scans (green) with the orthodontic setup models (yellow).
Superimpositions of the post-treatment intraoral scans (green) with the orthodontic setup models (yellow).

Figure 11.

One-year post-retention extraoral and intraoral photographs.
One-year post-retention extraoral and intraoral photographs.

Deviations between bonded and planned bracket positions

Tooth type Linear dimension Angular dimension
MD (mm) BL (mm) OG (mm) Rotation (°) Tip (°) Torque (°)
Incisor 0.055 0.047 0.050 1.252 1.350 1.907
  Upper 0.036 0.028 0.051 1.113 2.052 2.248
  Lower 0.074 0.066 0.049 1.390 0.649 1.567
Canine 0.057 0.022 0.048 0.689 1.817 0.829
  Upper 0.061 0.021 0.051 0.659 1.669 0.621
  Lower 0.052 0.023 0.046 0.720 1.966 1.036
Premolar 0.064 0.054 0.086 1.075 0.993 1.157
  Upper 0.087 0.073 0.133 1.482 1.182 1.597
  Lower 0.041 0.034 0.038 0.669 0.804 0.717
Molar 0.040 0.051 0.087 0.542 0.922 2.386
  Upper 0.028 0.031 0.112 0.559 0.816 1.798
  Lower 0.051 0.070 0.062 0.525 1.028 2.974
Total 0.052* 0.045* 0.068* 0.892* 1.226* 1.762

Cephalometric measurements

Pretreatment Posttreatment
Skeletal
  SNA (°) 82.4 81.3
  SNB (°) 78.6 78.7
  ANB (°) 3.8 2.6
  FMA (°) 26.3 25.7
Dental
  U1-SN (°) 110.2 100.4
  U1-NA (°) 27.8 18.9
  U1-NA (mm) 9.8 2.8
  L1-MP (°) 97.8 89.0
  L1-NB (°) 34.8 24.2
  L1-NB (mm) 9.8 4.2
  Interincisal angle (°) 113.6 133.9
Soft tissue
  Upper lip/E-line (mm) 2.2 -0.8
  Lower lip/E-line (mm) 4.8 0.8
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