Comparison of peer assessment rating (PAR) index scores of plaster and computer-based digital models

Mayers, Matthew Z.; Firestone, Allen R.; Rashid, Robert G.; Vig, Katherine W.L.

doi:10.1016/j.ajodo.2004.04.035

Cited by 96 publications

(76 citation statements)

References 11 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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“…However, these drawbacks are considered negligible compared with the benefits that digital technology can offer. 13,14 If desired, a real "copy" of the virtual models can be obtained by a process called prototyping. 13 Alcan et al 15 investigated the effects of different storage periods of alginate impressions in comparison with the accuracy of digital models obtained from the 3Shape D250 scanner (3Shape A/S, Copenhagen, Denmark).…”

Section: Introductionmentioning

confidence: 99%

Reliability of measurements made on scanned cast models using the 3Shape R700 scanner

Lemos

Crusoé‐Rebello

Vogel

et al. 2015

Dentomaxillofacial Radiology

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Objectives: In dentistry, the latest technological advancements have been incorporated primarily into diagnostic tools such as virtual dental models. The aim of this study was to evaluate the reliability of measurements made on digital cast models scanned in the 3Shape R700 scanner (3Shape, Copenhagen, Denmark) that uses a non-destructive laser beam to reproduce model surfaces so that the plaster model is not destroyed. Methods: The sample consisted of 26 cast models, and 6 linear measurements were made on the cast models and compared with the same measurements on digital models. The measurements assessed were: (1) distance between mandibular canines; (2) distance between mandibular molars; (3) distance between canine and maxillary molar; (4) buccal-lingual diameter of maxillary central incisor; (5) distance between two points of the incisive papillae of maxillary and mandibular central incisors; and (6) distance between the buccal surface of the maxillary central incisor and the buccal surface of the mandibular antagonist (overjet). The Student's t-test or Wilcoxon test was used at 5% and the Lin's concordance test at 95% confidence interval. Results: The overjet measurement was the only one that showed a statistically significant difference (p , 0.05). A high level of concordance was found for all measurements. Conclusions: The digital models obtained from the 3Shape R700 scanner are reliable and can be considered an alternative to cast models for performing measurements and analyses in orthodontic practice. Dentomaxillofacial Radiology (2015) 44, 20140337. doi: 10.1259/dmfr.20140337 Cite this article as: Lemos LS, Rebello IMCR, Vogel CJ, Barbosa MC. Reliability of measurements made on scanned cast models using the 3Shape R700 scanner. Dentomaxillofac Radiol 2015; 44: 20140337.

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“…The overall conclusion of these studies is that digital models are acceptable alternatives to stone casts for the routine measurements used in orthodontic practice. [22][23][24][25][26][27][28][29][30][31][32][33][34] On the other hand, no study has evaluated the possible time-dependent deformation of alginate impressions during their shipment to the companies involved.…”

Section: Introductionmentioning

confidence: 99%

The Relationship between Digital Model Accuracy and Time-Dependent Deformation of Alginate Impressions

Alcan

Ceylanoğlu²,

Baysal³

2009

The Angle Orthodontist

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Objectives: To investigate the effects of different storage periods of alginate impressions on digital model accuracy. Materials and Methods: A total of 105 impressions were taken from a master model with three different brands of alginates and were poured into stone models in five different storage periods. In all, 21 stone models were poured and immediately were scanned, and 21 digital models were prepared. The remaining 84 impressions were poured after 1, 2, 3, and 4 days, respectively. Five linear measurements were made by three researchers on the master model, the stone models, and the digital models. Time-dependent deformation of alginate impressions at different storage periods and the accuracy of traditional stone models and digital models were evaluated separately. Results: Both the stone models and the digital models were highly correlated with the master model. Significant deformities in the alginate impressions were noted at different storage periods of 1 to 4 days. Alginate impressions of different brands also showed significant differences between each other on the first, third, and fourth days. Conclusions: Digital orthodontic models are as reliable as traditional stone models and probably will become the standard for orthodontic clinical use. Storing alginate impressions in sealed plastic bags for up to 4 days caused statistically significant deformation of alginate impressions, but the magnitude of these deformations did not appear to be clinically relevant and had no adverse effect on digital modeling. (Angle Orthod. 2009;79:30-36.)

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Comparison of peer assessment rating (PAR) index scores of plaster and computer-based digital models

Cited by 96 publications

References 11 publications

Reliability of digital orthodontic setups

Reliability of digital orthodontic setups

Reliability of measurements made on scanned cast models using the 3Shape R700 scanner

The Relationship between Digital Model Accuracy and Time-Dependent Deformation of Alginate Impressions

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