Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston's equation

Sanches, Júlia Olien; Santos-Pinto, Lourdes Aparecida Martins dos; Santos-Pinto, Ary dos; Grehs, Betina; Jeremias, Fabiano

doi:10.1590/s2176-94512013000100024

Cited by 8 publications

(16 citation statements)

References 15 publications

(16 reference statements)

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“…In addition, five studies were selected from Google Scholar. To complete the process, we identified two additional studies from reviewing the reference cited by these 39 studies available at this selection stage. Thus, we reviewed the full text in 41 studies.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the selection criteria enabled retention of only 16 studies for the qualitative/quantitative synthesis. A flow chart of the process of identification, inclusion, and exclusion of studies is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The selected studies were conducted in seven different countries: Australia , Brazil , Canada , Israel , Japan , United Kingdom , and USA . The sample size ranged from one to 112 plaster models.…”

Section: Resultsmentioning

confidence: 99%

“…As they included articles that used scans from impressions or photographs of models, they did not specifically assess the validity of scans taken from plaster study models. Furthermore, we have identified that some potentially pertinent studies were not included in these previous systematic reviews.…”

Section: Introductionmentioning

confidence: 99%

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Intra‐arch dimensional measurement validity of laser‐scanned digital dental models compared with the original plaster models: a systematic review

Canto

Pachêco‐Pereira

Lagravère

et al. 2015

Orthod Craniofacial Res

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A systematic review was undertaken to evaluate the validity of intra-arch dimensional measurements made from laser-scanned digital dental models in comparison with measurements directly obtained from the original plaster casts (gold standard). Finally included articles were only those reporting studies that compared measurements from digital models produced from laser scanning against their plaster models. Measurements from the original plaster models should have been made using a manual or digital caliper (gold standard). Articles that used scans from impressions or digital photographs were discarded. Detailed individual search strategies for Cochrane, EMBASE, MEDLINE, PubMed, and LILACS were developed. The references cited in the selected articles were also checked for any references that could have been missed in the electronic database searches. A partial gray literature search was undertaken using Google Scholar. The methodology of selected studies was evaluated using the 14-item quality assessment tool for diagnostic accuracy studies (QUADAS). Only 16 studies were finally included for the qualitative/quantitative synthesis. The selected studies consistently agree that the validity of measurements obtained after using a laser scanner from plaster models is similar to direct measurements. Any stated differences would be unlikely clinically relevant. There is consistent scientific evidence to support the validity of measurements from digital dental models in comparison with intra-arch dimensional measurements directly obtained from them.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Intra‐arch dimensional measurement validity of laser‐scanned digital dental models compared with the original plaster models: a systematic review

Canto

Pachêco‐Pereira

Lagravère

et al. 2015

Orthod Craniofacial Res

View full text Add to dashboard Cite

show abstract

“…Tanaka and Johnston regression equation is one of the most common space analysis for predicting the mesiodistal size of unerupted canines and premolars teeth which is derived from North American children, So it's applicability on different population may be questionable due to variation in mesiodistal dimensions in different ethnic groups [21]. In the present study, when Tanaka-Johnston regression equation was applied in male and female samples, there was statistical significant difference (p<0.001) and clinical relevant difference (more than 1 mm) was found between the predicted and actual value of permanent maxillary and mandibular canines and premolars teeth.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Three Different Regression Equations Based Mixed Dentition Analysis in Children of Moradabad City, India

Bhatnagar

Chaudhary

Sinha

2017

Pesqui. bras. odontopediatria clín. integr.

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Objective: To assess the accuracy and applicability of three regression equations based mixed dentition analysis in children of Moradabad city, India. Material and Methods: Actual mesiodistal width of maxillary and madibular incisors, canines and premolars of 100 children (50 male and 50 female) aged 11-14 years were measured on dental cast with electronic digital vernier caliper. The analysis of Tanaka-Johnston, Ling-Wong and Jaroontham-Godfrey regression equations were tested on the dental casts. All analyses were performed on SPSS software. Data were summarized as Mean ± standard deviation (SD) paired observations were compared by paired t-test (two-tailed test) while independent groups were compared by independent Student's t-test. The level of significance was at P < 0.001. Results: The analysis of Tanaka-Johnston, Ling-Wong, Jaroontham-Godfrey regression equations tended to overestimate the mesiodistal width of the canines and premolars with the actual measured values. Conclusion: All the three regression equations based mixed dentition overestimated the mesiodistal width of canines and premolars in Moradabad population.

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Three-dimensional evaluation of mandibular anterior dental crowding in digital dental casts

Fernandes

Lkf

et al. 2017

Dental Press J. Orthod.

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Introduction: Digital dental models provide a more accurate and comprehensive assessment of orthodontic cases. Although this technique is quite promising, there are few three-dimensional measurements methods described in the literature. Objective: The aim of this study was to propose a method for assessing the degree of mandibular anterior dental crowding in the three planes of space, using digital dental models. Methods: Thirty dental casts were selected and scanned by Maestro 3D Dental Scanner and imported by Geomagic Qualify 2013 software. The degree of crowding was calculated by two examiners, based on the Little’s Irregularity Index, by means of the definition of axial, coronal and sagittal planes for each model. Intraexaminer analysis was performed with Dahlberg’s Formula (DF) and Intraclass Correlation Coefficients (ICC), and interexaminer analysis was performed with ICC and paired t-test. Results: The ICC showed an excellent agreement (p < 0.05) for all measurements, except for the intraexaminer and interexaminer in the Z-axis, in which it was found a moderate agreement. The DF showed a satisfactory accuracy with all measurements showing less than 1 mm difference. The paired t-test showed statistical difference between the examiners in two measurements, although it was clinical irrelevant. Conclusion: When comparing the three planes of space, the Z-axis showed the greatest variation in landmarks placement; however, overall, the present method seems precise and reproducible.

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Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston's equation

Abstract: Despite an adequate reproducibility of the measurements performed on both casts, most measurements on the digital casts were higher than those on the plaster casts. The predicted space was overestimated in both models and significantly higher in the digital casts.

Cited by 8 publications

References 15 publications

Intra‐arch dimensional measurement validity of laser‐scanned digital dental models compared with the original plaster models: a systematic review

Intra‐arch dimensional measurement validity of laser‐scanned digital dental models compared with the original plaster models: a systematic review

Evaluation of Three Different Regression Equations Based Mixed Dentition Analysis in Children of Moradabad City, India

Three-dimensional evaluation of mandibular anterior dental crowding in digital dental casts

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