Applicability of Tanaka Jhonston Method and Prediction of Mesiodistal Width of Canines and Premolars in Children
Journal Title: Journal of Clinical and Diagnostic Research - Year 2017, Vol 11, Issue 6
Abstract
Introduction: Essential part of diagnostic procedures in mixed dentition analysis is to determine adequate space available for the erupting permanent teeth. Various methods of analysis for mixed dentition are available; among them Tanaka Johnston method of space analysis for children was developed for North American children and is widely used. Its reliability among different racial and ethnic groups is yet to be determined. Aim: To check the applicability of Tanaka Jhonston method and to derive the mesiodistal width of unerupted canines and premolars and also derive new regression equations for Bangalore population. Materials and Methods: Considering the selection criteria, 400 subjects of Bangalore aged 13-16 years were randomly selected and study models were prepared. Mesiodistal widths of permanent lower incisors, canines and premolars were measured. Estimated width of upper, lower canines and premolars were also derived using Tanaka Jhonston method. Data was utilized to predict mesiodistal widths of erupting permanent canines and premolars. Descriptive analysis, independent student t-test, correlation and regression analysis were carried out. Results: Measured and estimated widths of upper and lower canines and premolars were compared and the results showed that estimated widths of upper and lower canines and premolars over estimated as to the actual measurements. A new regression equation was developed by using the formula Y=a+b(X) where Y= predicted width of canine and premolars, “a” and “b” are the constants and X= lower incisal width. Regression equations for males and females were derived separately. Conclusion: The original Tanaka Jhonston method over estimated for local Bangalore population. New regression equations and prediction tables were derived for males and females separately, which should be more conveniently used chairside by the clinician.
Authors and Affiliations
Umapathy Thimmegowda, Dr. Divyashree, Kumar B Niwlikar, Vaibhav Khare, Ashwini Chikkanayakanahalli Prabhakar
Keywords
Related Articles
- EP ID EP352061
- DOI 10.7860/JCDR/2017/25962.9995
- Views 47
- Downloads 0
In Vitro Anti-Cariogenic Plaque Effects of Essential Oils Extracted from Culinary Herbs
Introduction: Cariogenic bacteria including mutans streptococci and lactobacilli are partly but significantly involved in dental caries development. An effective prevention strategy against dental caries is to decrease t...
Vitamin D Deficiency in Children with Chronic Kidney Disease
ABSTRACT Introduction: Vitamin D deficiency leads to defective mineralisation and in Chronic Kidney Disease (CKD) can contribute to renal osteodystrophy. Aim: To compare the serum level of vitamin D in children with CKD...
Radiological Outcomes of Distal Radius Fractures Managed with 2.7mm Volar Locking Plate Fixation-A Retrospective Analysis
Introduction: Distal radius fractures accounts for around 15% of all fractures diagnosed and treated in the emergency rooms. These fractures usually result secondary to high velocity injury such as a motor vehicle accide...
Histomorphological Study of the Endometrium in Response to Insulin Resistance Induced by High Energy Diets in Swiss Albino Mice
ABSTRACT Introduction: The morphology of endometrium is continuously influenced by hormones in each menstrual cycle. In addition to this, metabolic syndrome such as obesity and insulin resistance affects the morphology o...
The Status of Organisational Culture and Job Satisfaction in Hamadan Specialty Hospitals
ABSTRACT Introduction: Job satisfaction is one of the factors that can affect the health of staff in hospitals. Organisations often cause job dissatisfaction among employees in three mechanisms which include formal struc...