Evaluation of the accuracy of digital model analysis for the American Board of Orthodontics objective grading system for dental casts

Costalos, Peter A.; Sarraf, Keivan; Cangialosi, Thomas J.; Efstratiadis, Stella

doi:10.1016/j.ajodo.2004.08.017

Cited by 104 publications

(113 citation statements)

References 5 publications

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“…14 The use of digital models was found to be an accurate and reliable method for assessing patients' final occlusions. 15 In our study, age was found to be a significant factor affecting the amount of tooth movement: younger subjects (\16 years) showed significantly greater amounts of tooth displacement compared with older subjects (.16 years). The effect of age on the tissue response to orthodontic force has been the subject of many investigations, since orthodontic procedures seem to be more time-consuming in adults than in juveniles.…”

Section: Discussionmentioning

confidence: 74%

Factors related to the rate of orthodontically induced tooth movement

Dudic

Giannopoulou

Kiliaridis

2013

American Journal of Orthodontics and Dentofacial Orthopedics

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Section: Discussionmentioning

confidence: 74%

Factors related to the rate of orthodontically induced tooth movement

Dudic

Giannopoulou

Kiliaridis

2013

American Journal of Orthodontics and Dentofacial Orthopedics

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“…Virtual models have been confirmed to be accurate and reliable, and the measurements obtained using them have been shown to be reproducible; therefore, these models are considered a feasible alternative to plaster models. [40][41][42] In this study, the FA points were digitized on 3D virtual models because the models show a direct relationship to the clinical archwire shape. The WALA points were also digitized because they represent the basal arch form.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional evaluation of the relationship between dental and basal arch forms in normal occlusion

et al. 2011

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Objective:The purposes of this study were to evaluate the relationship between the dental and basal arch forms; to analyze their differences in the tapered, ovoid, and square arch forms in normal occlusion by using three-dimensional (3D) virtual models; and to test the hypothesis that the overjet and maxillomandibular basal arch width difference have a significantly positive correlation. Methods: Seventy-seven normal occlusion plaster casts were examined by 3D scanning. Facial axis (FA) and WALA points were digitized using the Rapidform 2006 software. The dimensions of the dental and basal arches and the overjet were measured. The samples were classified into 3 groups according to arch forms: tapered (n = 20), ovoid (n = 20), and square (n = 37). Analysis of variance (ANOVA) was used to compare the dental and basal arch dimensions. The Pearson correlation coefficients between the intercanine as well as the intermolar widths at the FA and WALA points were calculated. Results: With regard to the basal arch dimensions, the tapered arch form showed a larger mandibular intermolar depth than the ovoid. Strong correlations were noted between the basal and dental intermolar widths in both the upper and lower arches (r = 0.83 and 0.85, respectively). Moderate correlation was found between the upper and lower intercanine widths (r = 0.65 and 0.48, respectively). Conclusions: The 3 dental arch form groups differed only in some dimensions of the skeletal arch. Moderate correlations were found between the basal and dental intercanine widths. These findings suggest that the basal arch may not be a principle factor in determining the dental arch form. (Korean J Orthod 2011;41(4):288-296)

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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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Evaluation of the accuracy of digital model analysis for the American Board of Orthodontics objective grading system for dental casts

Cited by 104 publications

References 5 publications

Factors related to the rate of orthodontically induced tooth movement

Factors related to the rate of orthodontically induced tooth movement

Three-dimensional evaluation of the relationship between dental and basal arch forms in normal occlusion

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

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