Abstract
Introduction: Moyer’s probability table is most commonly used to predict the mesiodistal width of permanent canines and premolars in mixed dentition. However, the table was formulated using data from Caucasian population. This study was performed to compare the Moyer’s prediction table with actual value in Nepalese Newar population as ethnicity is one of the important factor to determine teeth width.
 Materials & Method: Combined mesiodistal width of permanent canine and premolars were measured in 150 study models of Nepalese Newar orthodontic patients (75males and 75 females). The value was compared with the Moyer’s prediction table at all probability level.
 Result: There was no statistically significant difference between the actual combined width and that predicted from Moyer’s table at 85% probability level for maxilla and at 75% level for mandible in male, at 95% probability level for maxilla and at 85% probability level for mandible in female.
 Conclusion: Moyer’s probability level can be used to predict the combined mesiodistal width of permanent canines and premolars in Nepalese Newar population but at specific probability level.
Highlights
Moyer’s probability table is most commonly used to predict the mesiodistal width of permanent canines and premolars in mixed dentition
Mixed dentition space analysis can be done to predict the future requirement of space for permanent teeth so that intervention can be done to reduce the severity of malocclusion.[5,6]
This study aims to test the applicability of Moyer’s mixed dentition analysis for Newar community in Kathmandu valley
Summary
Moyer’s probability table is most commonly used to predict the mesiodistal width of permanent canines and premolars in mixed dentition. Crowding of teeth is one of the main reason for patients seeking orthodontic treatment[1,2,3] as it is unesthetic and maintenance of oral hygiene becomes difficult. If it can be diagnosed early during mixed dentition stage, intervention can be done to treat or to reduce its severity. According to Proffit and Fields[1] Moyer’s table is fairly applicable for northern European whites on which the data was based but does not accurately predict for other races.[8,9,10,11,12]
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