Construction of orthodontic setup models on a computer

Kihara, Takeshi; Tanimoto, Kotaro; Michida, Masahiko; Yoshimi, Yuki; Nagasaki, Toshikazu; Murayama, Tetsuya; Tanne, Kazuo; Nikawa, Hiroki

doi:10.1016/j.ajodo.2011.10.027

Cited by 33 publications

(27 citation statements)

References 29 publications

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“…9 A further benefit is the ability to integrate the detail from digital models onto cone-beam computed tomography scans to visualize tooth roots in a virtual setup or to plan orthognathic surgery. 10,11 Digital models can also be used to superimpose pretreatment and posttreatment models to evaluate therapeutic outcomes. 12,13 Numerous studies have evaluated the accuracy and reliability of measurements made on digital models compared with plaster models and have determined that measurements on the 2 types of models are generally equivalent.…”

mentioning

confidence: 99%

Comparison of 5 types of interocclusal recording materials on the accuracy of articulation of digital models

Sweeney

Messersmith

2015

American Journal of Orthodontics and Dentofacial Orthopedics

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mentioning

confidence: 99%

Comparison of 5 types of interocclusal recording materials on the accuracy of articulation of digital models

Sweeney

Messersmith

2015

American Journal of Orthodontics and Dentofacial Orthopedics

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“…Recently Kihara et al [32] have published a study the aim of which is the reconstruction of dental roots directly on the scanned model: their study presents more accurate and reliable results than those presented in this study (average discrepancy of 0.025 ± 0.007 mm), but their method contemplates the use of CBCT in every patient and therefore an increased dose of radiation that should be justified [8]. …”

Section: Discussionmentioning

confidence: 97%

From 2D to 3D: Construction of a 3D Parametric Model for Detection of Dental Roots Shape and Position from a Panoramic Radiograph—A Preliminary Report

Mazzotta

Cozzani

Razionale

et al. 2013

International Journal of Dentistry

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Objectives. To build a 3D parametric model to detect shape and volume of dental roots, from a panoramic radiograph (PAN) of the patient. Materials and Methods. A PAN and a cone beam computed tomography (CBCT) of a patient were acquired. For each tooth, various parameters were considered (coronal and root lengths and widths): these were measured from the CBCT and from the PAN. Measures were compared to evaluate the accuracy level of PAN measurements. By using a CAD software, parametric models of an incisor and of a molar were constructed employing B-spline curves and free-form surfaces. PAN measures of teeth 2.1 and 3.6 were assigned to the parametric models; the same two teeth were segmented from CBCT. The two models were superimposed to assess the accuracy of the parametric model. Results. PAN measures resulted to be accurate and comparable with all other measurements. From model superimposition the maximum error resulted was 1.1 mm on the incisor crown and 2 mm on the molar furcation. Conclusion. This study shows that it is possible to build a 3D parametric model starting from 2D information with a clinically valid accuracy level. This can ultimately lead to a crown-root movement simulation.

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“…3 With the transition to digital study models, diagnostic setups can now be created digitally. 4,5,6,7 Similar to a wax setup, the digital setup is a tool that helps with treatment planning and it is up to the creator of the setup to respect the biologic limitations of tooth movement and mimic realistic biomechanics. Previous studies have shown that digital setups can be as accurate and reliable as wax setups.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

The effect of digital diagnostic setups on orthodontic treatment planning

Hou

Capote

Bayirli

et al. 2020

American Journal of Orthodontics and Dentofacial Orthopedics

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The purpose of this study was to explore the effect of viewing digital setups on orthodontic treatment planning. Six cases were identified from the UW Graduate Clinic to represent different case types that could benefit from a diagnostic setup. The cases included adolescent and adult patients with a variety of conditions, such as missing teeth, dental crowding, or subdivisions. Twenty-two orthodontists and seven orthodontic residents treatment planned each case, indicating their most recommended plan and up to two alternative plans. After treatment planning each case, digital setups of each treatment plan indicated by the practitioner were viewed. After viewing the setup(s) for each case, practitioners were asked if they still recommended the same plan as they had originally, or if they would now choose a different plan. Their confidence levels in the success of their plans were recorded before and after viewing the setups. After viewing the digital setups, 23.6% of treatment plans changed, with changes that included adding or removing IPR, change in extraction pattern, or change in the management of missing teeth. In addition, practitioner confidence level increased after viewing the setups. While initial confidence levels were lower for a) complex cases, b) cases where the treatment plan changed, and c) orthodontic residents, the final confidence levels were uniformly high among all practitioners. The most helpful features of digital setups were the abilities to: superimpose the setup with the original model, determine the amount of tooth movement needed, check the final incisal relationship (overjet and overbite), and establish the IPR amount required. Digital setups can influence treatment plans and the level of confidence the practitioner has in the plan. Setups can be helpful when deciding on the most recommended treatment plan prior to starting treatment.

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Construction of orthodontic setup models on a computer

Cited by 33 publications

References 29 publications

Comparison of 5 types of interocclusal recording materials on the accuracy of articulation of digital models

Comparison of 5 types of interocclusal recording materials on the accuracy of articulation of digital models

From 2D to 3D: Construction of a 3D Parametric Model for Detection of Dental Roots Shape and Position from a Panoramic Radiograph—A Preliminary Report

The effect of digital diagnostic setups on orthodontic treatment planning

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