Discriminant factor analysis of dental arch dimensions with 3-dimensional virtual models

Špalj, Stjepan; Jelušić, Damir; Šlaj, Mladen

doi:10.1016/j.ajodo.2010.12.022

Cited by 14 publications

(11 citation statements)

References 17 publications

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“…This advantage is also mentioned by some authors regarding digital models. [10][11][12][13][14][15][16][17] In recent years, replacing conventional diagnostic methods with other more technologically advanced methods has become common in the medical and dental areas. 18,19 The use of digital setups seems to have the potential to reinforce this trend, which could mean further development in the process of storing information required for orthodontic diagnosis.…”

Section: Discussionmentioning

confidence: 99%

Reliability of digital orthodontic setups

Barreto

Faber

Vogel

et al. 2015

The Angle Orthodontist

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Objective: To evaluate the reliability of digital orthodontic setup technology by comparing it with manual setups and models cast at the end of orthodontic treatment. Materials and Methods: Initial models, manual setups, and final models of 20 patients were used. The initial and final models, as well as the manual setups, were scanned using a 3Shape R-700 scanner, while the digital setups were fabricated based on the initial models using 3Shape OrthoAnalyzer software. Evaluation of the models based on the manual setup, digital setup, and final models of each patient was performed using the following linear measurements: intercanine widths, intermolar widths, and length of the upper and lower dental arches. Results:The results disclosed that none of the measures assessed through the manual setup, digital setup, and final models showed statistically significant differences (P . .05). Conclusions: Based on these findings, it can be inferred that digital setups are as effective and accurate as manual setups and constitute a tool for diagnosing and treatment planning that can be reliably reproduced in orthodontic treatments. (Angle Orthod. 2016;86:255-259.)

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Section: Discussionmentioning

confidence: 99%

Reliability of digital orthodontic setups

Barreto

Faber

Vogel

et al. 2015

The Angle Orthodontist

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show abstract

“…All measurements of 3D digital models in the z-plane were significantly smaller than those of the corresponding plaster and reconstructed models. The study presented in [9] showed the forms of dental arch, obtained by factor analysis of 137 digital models, all three classes of bites (43, 50 and 44 prints), young people, between 15 and 18 years, 71 girls and 66 boys. The main elements of factor analysis were: the ratio of width / height of the lower canine, accounting for 82.8% of variability (p < 0.001).…”

Section: The State Of Research In the Worldmentioning

confidence: 99%

Dental Arch Monitoring by Splines Using 3d Digital Models

Majstorović¹,

Živković²,

Glišić³

2019

Act Scie Dental

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Backrgound/Aim: Researchers in the field of dentistry have been conducting research into modelling and defining dental arches equitations. Nowadays, when 3D digital modelling is commonly utilized in dentistry, the approach to modelling, analysis and synthesis has changed. Clinical researches are related to aesthetic and functional analysis. The aim of this study was to increase repeatability and accuracy of defining and determining the coordinate system of the jaw as well as to defining mathematical criteria for monitoring and evaluating orthodontic treatment. Methods: In this study, we used the plaster models of the jaw, optical scanner with structured light, 3D digital models, computer aided design (CAD) engineering tools adjusting the coordinate system, spline fitting of 3rd, 4th, 5th, 6th, 7th and 8th degrees. Results: Splines of 3rd, 4th, 5th, 6th, 7th and 8th degrees were fitted from the initial state (K0) in all 10 successive controls (K1, K2, K3,…, K10). All splines were fitted through 12 points, from the right to the left side of the jaw: 6-5-4-3-2-1-1-2-3-4-5-6. Tabular and graphic presentations of the maximum and average deviation of dental arch fitting curves in successive controls were given. Conclusion: The parameters of the maximum and average errors of fitting curves converge the dental arch values that are lower than the accuracy of the used optical scanners. The average error of fitting provides a general picture of the entire dental arch at each stage of treatment. Maximum error fitting points at a specified tooth where the largest deviation. The application of new computer-aided technologies is nowadays found in various fields of dentistry: CAD-design and 3D modeling (prosthetics, orthodontics, endodontics), CAE-calculations and simulations of stresses and loads in the field of dentistry (teeth, jaws, joints) [2], respectively. using Finite Element Methods (FEM), then CAM-production of dental surcharges and orthodontic locks using computers, RP-rapid prototype production (fixed surcharges and elements of orthodontic appliances), CAQ-modeling and quality assurance of dental surcharges and orthodontic appliances, digital dentistry, digital dentistry all of the above approaches, and 'cloud'

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“…The study by Slaj et al 8 showed the dental arch shapes obtained by the factor analysis of 137 digital models. The key element of factor analysis was the ratio between the lower canine width/height, which comprises 82.8% of variability (p < 0.001).…”

Section: Introductionmentioning

confidence: 99%

Dental arch monitoring by splines fitting error during orthodontic treatment using 3D digital models

2019

View full text Add to dashboard Cite

Backrgound/Aim. Researchers in the field of dentistry have been conducting research into modelling and defining dental arches equitations. Nowadays, when 3D digital modelling is commonly utilized in dentistry, the approach to modelling, analysis and synthesis has changed. Clinical researches are related to aesthetic and functional analysis. The aim of this study was to increase repeatability and accuracy of defining and determining the coordinate system of the jaw as well as to defining mathematical criteria for monitoring and evaluating orthodontic treatment. Methods. In this study, we used the plaster models of the jaw, optical scanner with structured light, 3D digital models, computer aided design (CAD) engineering tools adjusting the coordinate system, spline fitting of 3rd, 4th, 5th, 6th, 7th and 8th degrees. Results. Splines of 3rd, 4th, 5th, 6th, 7th and 8th degrees were fitted from the initial state (K0) in all 10 successive controls (K1, K2, K3,…, K10). All splines were fitted through 12 points, from the right to the left side of the jaw: 6-5-4-3-2-1-1-2-3-4-5-6. Tabular and graphic presentations of the maximum and average deviation of dental arch fitting curves in successive controls were given. Conclusion. The parameters of the maximum and average errors of fitting curves converge the dental arch values that are lower than the accuracy of the used optical scanners. The average error of fitting provides a general picture of the entire dental arch at each stage of treatment. Maximum error fitting points at a specified tooth where the largest deviation.

show abstract

Discriminant factor analysis of dental arch dimensions with 3-dimensional virtual models

Cited by 14 publications

References 17 publications

Reliability of digital orthodontic setups

Reliability of digital orthodontic setups

Dental Arch Monitoring by Splines Using 3d Digital Models

Dental arch monitoring by splines fitting error during orthodontic treatment using 3D digital models

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