The validity, reliability, and time requirement of study model analysis using cone‐beam computed tomography–generated virtual study models

Luu, Nghe S.; Mandich, M. L.; Flores-Mir, Carlos; El‐Bialy, Tarek; Heo, Giseon; Carey, Jason P.; Major, Paul W.

doi:10.1111/ocr.12024

Cited by 11 publications

(47 citation statements)

References 12 publications

(13 reference statements)

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“…6 Technological advancement has allowed the production of dental models in the digital format, which affects the orthodontic clinics 7 by the current trend to replace the plaster models by three-dimensional (3D) digital models. 5,8 However, their comparability to plaster models needs to be proved since the measurement procedure with digital caliper in plaster models is considered the gold standard or reference standard in orthodontic research. 1,3,5,7,[9][10][11][12] Plaster models also have advantages such as easy and low cost production.…”

Section: Introductionmentioning

confidence: 99%

Accuracy and reproducibility of dental measurements on tomographic digital models: a systematic review and meta-analysis

Ferreira

Christovam

Alencar

et al. 2017

Dentomaxillofacial Radiology

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Section: Introductionmentioning

confidence: 99%

Accuracy and reproducibility of dental measurements on tomographic digital models: a systematic review and meta-analysis

Ferreira

Christovam

Alencar

et al. 2017

Dentomaxillofacial Radiology

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“…Some authors compared the measurements made in plaster models in respect of the scanning models. [ 4 8 9 10 11 12 13 14 15 16 17 18 19 ] Others compared the measurements made in plaster models in respect to the digital CBCT image and scanned CBCT models of plaster cast,[ 20 21 22 ] and a few compared the three techniques. [ 22 23 24 25 ] CBCT is an important diagnostic tool in dentistry.…”

Section: Discussionmentioning

confidence: 99%

A comparative evaluation of mixed dentition analysis on reliability of cone beam computed tomography image compared to plaster model

Gowd

Shankar

Dash

et al. 2017

J Int Soc Prevent Communit Dent

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Aims and Objective:The aim of the study was to evaluate the reliability of cone beam computed tomography (CBCT) obtained image over plaster model for the assessment of mixed dentition analysis.Materials and Methods:Thirty CBCT-derived images and thirty plaster models were derived from the dental archives, and Moyer's and Tanaka-Johnston analyses were performed. The data obtained were interpreted and analyzed statistically using SPSS 10.0/PC (SPSS Inc., Chicago, IL, USA). Descriptive and analytical analysis along with Student's t-test was performed to qualitatively evaluate the data and P < 0.05 was considered statistically significant.Results:Statistically, significant results were obtained on data comparison between CBCT-derived images and plaster model; the mean for Moyer's analysis in the left and right lower arch for CBCT and plaster model was 21.2 mm, 21.1 mm and 22.5 mm, 22.5 mm, respectively.Conclusion:CBCT-derived images were less reliable as compared to data obtained directly from plaster model for mixed dentition analysis.

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“…In the present study the measurements of both different virtual model sets were compared to those of the physical plaster model, with was judged to be the gold standard, since it would be ethically and clinically impossible to obtain the exact tooth measurements to be used as the gold standard [1][2][8][9]11,16 . The statistically significant differences found in some measurements can be partially explained by the fact that even though the alginate used in this study has a high stability, in the first 100 h, some contraction may have occurred from the time the impression was scanned to the time the models were poured and expansion caused by the plaster once it hardens.…”

Section: Discussionmentioning

confidence: 99%

“…The study of plaster models is an essential prerequisite for successful orthodontic treatment planning [1][2] . Traditionally, information is gathered from plaster orthodontic models, direct measurement or 2D photographs and radiographs [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Reliability of measurements on virtual models obtained from scanning of impressions and conventional plaster models

Moreira¹,

Gribel²,

Torres³

et al. 2014

Braz. J. Oral Sci.

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Aim: To evaluate the reliability of linear measurements in virtual models by comparing measurements performed on virtual models obtained from alginate impression scans, plaster model and measurements performed on conventional plaster model. Methods: The sample comprised 26 randomly selected patients to have impressions of their upper and lower jaws taken using alginate and their bite registration using a wax bite. The virtual models were obtained by scanning the alginate impression and the plaster model in a laser surface scanner (R700; 3Shape, Copenhagen, Denmark), and the measurements were performed using the Ortho Analyser (3Shape) proprietary software. The linear measurements of the size of the teeth mesial to distal, arch perimeter, intercanine distance and intermolar distance in the upper and lower arches were performed on plaster models, digital impressions and digital models, by three observers and repeated after 15 days on 8 models for intra-observer evaluations. Data were tabulated and analyzed statistically. Intra-class correlation to check the agreement of intra and inter-observers and ANOVA test were used to analyze the differences between measurements of digital models from impression and digital models from plaster. Results: The results showed a statistically significant difference (pd"0.05) for the posterior teeth, anterior teeth, upper arch perimeter and lower inter-canine distance, comparing the digital models with plaster models, but these differences are considered clinically non-significant. Conclusions: Digital models were proven be reliable and clinically acceptable for measuring tooth width, perimeter arches, intercanine and intermolar distances.

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The validity, reliability, and time requirement of study model analysis using cone‐beam computed tomography–generated virtual study models

Abstract: Study model analysis using CBCT-generated study models was reliable but not always valid and required more time to perform when compared with plaster models.

Cited by 11 publications

References 12 publications

Accuracy and reproducibility of dental measurements on tomographic digital models: a systematic review and meta-analysis

Accuracy and reproducibility of dental measurements on tomographic digital models: a systematic review and meta-analysis

A comparative evaluation of mixed dentition analysis on reliability of cone beam computed tomography image compared to plaster model

Reliability of measurements on virtual models obtained from scanning of impressions and conventional plaster models

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