The validity and reliability of mixed-dentition analysis methods

Background: Accurate prediction of the mesiodistal widths (MDWs) of canines and premolars in children with primary dentition facilitates interception of malocclusion at an early age. Boston University (BU) approach is one, i.e., based on primary teeth for predicting canine and premolar dimensions.Aim: To predict the canine and premolar dimensions, in the contemporary population, using BU approach and compare with the values obtained using Tanaka-Johnston (T/J) approach.Design: Children in the age range of 7-11 years with presence of all permanent mandibular incisors and primary maxillary and mandibular canines and first molars were included in the study. Those with interproximal caries or restorations, abnormalities in shape or size and history of orthodontic treatment were excluded. Impressions of both arches were made using irreversible hydrocolloid and poured with dental stone. The MDWs of the required teeth were measured on the models using electronic digital vernier caliper from which widths of permanent canines and premolars were predicted using both T/J and BU approaches.Results: Statistically significant (p = 0.00) positive correlation (r = 0.52-0.55) was observed between T/J and BU approaches. A statistically significant (p = 0.00) strong positive correlation (r = 0.72-0.77) was observed among girls, whereas boys showed a statistically nonsignificant weak positive correlation (r=0.17-0.42) based on gender.Conclusion: Boston University approach can be further studied prospectively to make it possible as a prediction method of permanent tooth dimensions for children in primary dentition stage.How to cite this article: Nuvvula S, Vanjari K, Kamatham R, Gaddam KR. Primary Dentition Analysis: Exploring a Hidden Approach. Int J Clin Pediatr Dent 2016;9(1):1-4.

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“…Due to this reason, some hesitate to recommend BU approach, but not that it can/cannot predict the tooth size. 9 …”

Section: Discussionmentioning

confidence: 99%

Primary Dentition Analysis: Exploring a Hidden Approach

Nuvvula

Vanjari

Kamatham

et al. 2016

International Journal of Clinical Pediatric Dentistry

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“…An appropriate mixed dentition space analysis (MDS) helps to reduce the severity of a developing malocclusion or even eliminate it, if timely interceptive treatment is initiated (Moyers, 1988;Kuswandari et al, 2006). An accurate forecast of the size of unerupted teeth versus the available space helps orthodontists to make correct decisions regarding treatment options for the patient, whether to involve serial extraction, eruption guidance, space management, space regaining or just periodic observation of the patient (Hukaba, 1964;Smith et al, 1979;Bishara and Jakobsen, 1998;Lee-Chan et al, 1998;Luu et al, 2011). Inappropriate and invalid MDS can lead to extraction decisions, which negatively alters a patient's soft tissue facial profile (Durgekar and Naik, 2009), dental aesthetics and functional occlusion.…”

Section: Introductionmentioning

confidence: 99%

Applicability of the Tanaka–Johnston and Moyers mixed dentition analyses in Northeast Han Chinese

Sherpa

Sah

Zeng

et al. 2015

Journal of Orthodontics

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“…[ 13 ] The literature review showed that of all the three methods applied in mixed dentition analysis, Tanaka-Johnston's is widely used. [ 14 ] Young age group (12–15 years) was chosen for measurement to minimize the alteration of the mesiodistal tooth dimensions because of attrition, restoration, or caries.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of validity of Tanaka-Johnston analysis in Mumbai school children

Hambire

Sujan

2015

Contemp Clin Dent

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Introduction:Estimation of the mesiodistal dimensions of the unerupted canines and premolars in the early mixed dentition is a necessary diagnostic aid in space management. Tanaka-Johnston analysis was developed for North American children. Anthropological study reveals that tooth size varies among different ethnicities. The present study was performed to evaluate the validity of Tanaka-Johnston method of mixed dentition arch analysis in Mumbai school children.Aims:(1) To determine the correlation between the sum of the mesiodistal widths of the permanent mandibular incisors and combined mesiodistal widths of the permanent mandibular and maxillary canines and premolar in Mumbai school children. (2) To examine the applicability of Tanaka-Johnston method of prediction.Materials and Methods:Dental casts of maxillary and mandibular arches of 300 children, 147 boys and 153 girls within the age group of 12–15 years, with permanent dentitions were fabricated. The mesiodistal crown dimensions of teeth were measured with a dial caliper. Tanaka-Johnston method of mixed dentition arch analysis was performed for the study population, and statistical analysis was done.Statistical Analysis Used:Descriptive statistics including the mean, standard deviation, range, and standard error were calculated and tabulated.Results:Tanaka-Johnston's equation when applied to the data available for Mumbai school children, it was observed that it slightly overestimates the tooth size.Conclusions:(1) There was a positive correlation between the width of mandibular incisors and mandibular and maxillary canines and premolars. (2) The Tanaka-Johnston prediction method was not accurate for a sample of Mumbai school children.

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The validity and reliability of mixed-dentition analysis methods

Cited by 23 publications

References 26 publications

Primary Dentition Analysis: Exploring a Hidden Approach

Primary Dentition Analysis: Exploring a Hidden Approach

Applicability of the Tanaka–Johnston and Moyers mixed dentition analyses in Northeast Han Chinese

Evaluation of validity of Tanaka-Johnston analysis in Mumbai school children

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