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      Comparison of Two Different Non-Radiographic Mixed Dentition Analysis

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          Abstract

          Abstract Objective: To evaluate the applicability of two different non-radiographic mixed dentition analysis in school going children of Aligarh district, India. Material and Methods: Mesiodistal dimension was measured on the dental casts of 120 school going children with electronic digital vernier caliper. The following inclusion criteria were adopted: presence of all fully erupted permanent teeth; no congenital craniofacial anomalies; no previous history of orthodontic treatment; and presence of intact dentition with no proximal caries, restoration, or age related attrition. Predicted values of canines and premolars were obtained from Moyer's at 75th percentile and Tanaka and Johnston mixed dentition analysis. Descriptive statistics were used to calculate the mean and standard deviation. Paired observations were compared by t-test. The level of significance was at p<0.001. Results: The mean difference between the predicted and the actual value of canines and premolars using Moyer's probability table at 75th percentile and Tanaka and Johnston regression equation were statistically significant. No significant differences were found between Moyer's analysis 75th percentile and Tanaka and Johnston mixed dentition analysis in both arch and sexes. Conclusion: These two non-radiographic mixed dentition analysis overestimated the mesiodistal width of canines and premolars.

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          Most cited references 27

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          Prediction of space available for unerupted permanent canine and premolars in a Nepalese population.

          To test the use of Moyers prediction method and Tanaka and Johnston's equations for use in a Nepalese population and to construct new probability tables and prediction formulae based on the actual tooth sizes in a sample of the Nepalese population. Cross-sectional. SOURCE AND SETTING: Dental, medical and nursing science students at the B.P. Koirala Institute of Health Sciences, Dharan, Nepal. The sample consisted of 100 Nepalese males and 100 females aged between 17 and 23 years. Subjects without any previous orthodontic treatment, fully erupted permanent teeth and with no dental anomalies were recruited. Dental study models were taken and measurements of the mesio-distal widths of teeth were carried out using digital caliper. The measured values were compared with predicted values derived from Moyers method and Tanaka and Johnston equations. Independent t tests were used to examine differences between genders. Correlation coefficients and linear regression equations were used to compare the actual Nepalese tooth widths with predicted values Moyers method at 50% tends to underestimate the actual width of the canine and premolars in males by 0.3 mm and overestimate the width in females by 0.2 mm. The Tanaka and Johnston method tends to overestimate the actual width of the canine and premolars in both males (0.7 mm) and females 1.0 mm. The newly developed regression equations are more accurate for prediction of width of unerupted permanent teeth in a Nepalese population. Further studies are required based on larger sample size, to confirm the applicability of the new regression equations proposed.
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            Predicting the size of unerupted canines and premolars of the maxillary and mandibular quadrants in an Iranian population.

            The aim of this investigation was to examine the accuracy of Moyers probability tables and the Tanaka and Johnston prediction equations in predicting the size of unerupted canines and premolars of the maxillary and mandibular quadrants in an Iranian population and to derive a standard formula for it.
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              Correlations among crown diameters of human teeth

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                pboci
                Pesquisa Brasileira em Odontopediatria e Clínica Integrada
                Pesqui. Bras. Odontopediatria Clín. Integr.
                Associação de Apoio à Pesquisa em Saúde Bucal (João Pessoa, PB, Brazil )
                1519-0501
                1983-4632
                2019
                : 19
                Affiliations
                Aligarh Uttar Pradesh orgnameAligarh Muslim University orgdiv1Dr. Z. A. Dental College and Hospital orgdiv2Department of Pediatric and Preventive Dentistry India
                Aligarh Uttar Pradesh orgnameAligarh Muslim University orgdiv1Dr. Z. A. Dental College and Hospital orgdiv2Department of Pediatric and Preventive Dentistry India
                Aligarh Uttar Pradesh orgnameAligarh Muslim University orgdiv1Dr. Z. A. Dental College and Hospital orgdiv2Department of Pediatric and Preventive Dentistry India
                Article
                S1983-46322019000100344
                10.4034/pboci.2019.191.59

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 27, Pages: 0
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                Categories
                Original Article

                Odontometry, Dentition, Mixed, Orthodontics

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