Evaluation of Accuracy of Tanaka-Johnston Mixed Dentition Analysis in North Karnataka Population: A Cross-Sectional Study

Bangi, Sayeeda Laeque; Kondody, Rony T; Sana, Safiya; Fatima, Asma; Hussain, Arshad

doi:10.1177/03015742221076913

Cited by 3 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This denoted that the applicability of the analysis on an ethnic group other than that it was derived from was not utterly correct. Several previous investigations reported similar results on other ethnic groups (8,(18)(19)(20)(21)(22)(23)(24) ; which entailed deriving new equations that could more properly fit the Egyptian children from Alfayoum Governorate.…”

Section: Discussionmentioning

confidence: 61%

New Equations for Egyptian Children Based on Tanaka and Johnston Mixed Dentition Analysis

2023

The Egyptian Journal of Hospital Medicine

View full text Add to dashboard Cite

Background: The role of different ethnic backgrounds in mixed dentition analyses cannot be overlooked and a customized means of diagnosis should be the goal of every population. Objective:This study aimed at investigating the applicability of the Tanaka and Johnston mixed dentition analysis as a diagnostic aid in Egyptian children and deriving new equations, if relevant.Materials and methods: 180 pairs of stone casts of 13-16-year-old children were traced using TracerNet software. The predicted sum of sizes of 345 from Tanaka and Johnston equations was compared to the actual sum and two regression equations were derived and compared.Results: There was a significant difference between the actual and predicted sizes of teeth; p<0.05. The derived equations for the upper and lower arches were significant; p=0.008 and p<0.001; respectively. They were also significantly different from the tested equation and had a lower mean square error. The mean square error of the derived equations was 4.10 and 6 for the upper and lower arches; respectively, while the Tanaka and Johnston lower arch equation had a mean square error of 9.93 and 12.86 for the upper arch.Conclusions : Tanaka and Johnston analysis could not be an accurate diagnostic aid for Egyptian children and new more accurate and specially tailored equations were derived.

show abstract

Section: Discussionmentioning

confidence: 61%

New Equations for Egyptian Children Based on Tanaka and Johnston Mixed Dentition Analysis

2023

The Egyptian Journal of Hospital Medicine

View full text Add to dashboard Cite

show abstract

Comparison of the different methods of width estimation in unerupted canine and premolars

Ghasemi,

Sabbaghzadeh,

Mollaei

et al. 2024

BMC Oral Health

View full text Add to dashboard Cite

Background There are different methods for determining the required space for unerupted teeth. However, the accuracy of these techniques varies depending on ethnic differences. Therefore, the current study was performed to compare the accuracy of four methods for estimating the mesiodistal width of unerupted canines and premolars in a population of northern Iran. Methods The present cross-sectional study was conducted on 50 pairs of dental casts of patients aged 12–24 years old. The mesiodistal width of the teeth was measured with a digital caliper by two observers (ICC < 0.9), and the mean value was recorded. The space required for eruption of canines and premolars was obtained by the Tanaka-Johnson formula and the Moyers tables and compared with the actual value by paired t test. Results The Tanaka-Johnson formula had overestimation in the maxilla and mandible, which was statistically significant (p < 0.001). The values obtained from the Moyers tables in different confidence levels were not accurate. However, the 65% level for the mandible had almost no difference from the actual value (P = 0.996 and r2 = 0.503). Furthermore, linear regression was obtained based on the total mesiodistal width of the maxillary first molar and mandibular central incisor (maxilla: Yx= 0.613X + 2.23 and mandible: Ym= 0.618X + 1.6) and the total mesiodistal width of the mandibular first molar and maxillary central incisor in each jaw (maxilla: Yx = 0.424X + 5.021 and mandible: Ym = 0.447X + 3.631). Conclusion The Tanaka-Johnson method was overestimated in the population of northern Iran. The 85% and 75% confidence levels of the Moyers table have the best clinical results for the maxilla and mandible, respectively. Regression based on maxillary first molars and mandibular central incisors has better results.

show abstract

Comparison of traditional and mobile photogrammetric method for the Tanaka Johnston mixed dentition analysis: an analytical cross-sectional study

Padmanabh,

Bhise,

Jhamb

et al. 2024

Tanta Dental Journal

View full text Add to dashboard Cite

Aim Comparison of Tanaka Johnston mixed dentition analysis using the mobile photogrammetric method and traditional method. Patients and methods Thirty-five healthy children between the ages of 6 and 10 were signed up for the study. Casts were considered using the conventional Tanaka Johnston analysis method. A digital caliper was utilized to measure the mesiodistal dimension of every tooth from the incisor to the first permanent molar on both sides. Occlusal photos were taken intraorally using a smartphone and an intraoral occlusal mirror. The principal investigator took the intraoral pictures. An assistant retracted the lips and placed the intraoral mirror inside the mouth. The acquired images were exported to the digimizer software, where they were processed and analyzed. To enable digital software to measure dental arch images, an occlusal ruler was kept at the occlusal level. A total of 20 tooth measurements in the maxillary and mandibular arches were taken for the Tanaka Johnston mixed dentition analysis. Results Thirty-five children were assessed. Intergroup comparison of different parameters between two groups was performed. This comparison revealed no statistically significant differences (P value > 0.05) between the traditional and photogrammetric methods for all parameters, indicating that both methods produce similar outcomes. Conclusion The photogrammetric method is a reliable and valid method to measure individual tooth width. The photogrammetric method is alternative to traditional method for Tanaka Johnston mixed dentition analysis.

show abstract

Evaluation of Accuracy of Tanaka-Johnston Mixed Dentition Analysis in North Karnataka Population: A Cross-Sectional Study

Cited by 3 publications

References 13 publications

New Equations for Egyptian Children Based on Tanaka and Johnston Mixed Dentition Analysis

New Equations for Egyptian Children Based on Tanaka and Johnston Mixed Dentition Analysis

Comparison of the different methods of width estimation in unerupted canine and premolars

Comparison of traditional and mobile photogrammetric method for the Tanaka Johnston mixed dentition analysis: an analytical cross-sectional study

Contact Info

Product

Resources

About