KUMJ | VOL. 14 | NO. 3 | ISSUE 55 | JULY-SEPT. 2016
Permanent Teeth Emergence Time and Sequence in Children of Kavre District, Nepal
Upadhyay S, Shrestha R, Shrestha D, Poudyal S
Abstract: Background
Population specific standards on the timing and sequence of emergence of permanent
teeth are essential in planning dental care for children. There is only a single study on
the emergence of permanent teeth in Nepalese children.
Objective
To determine the standards for permanent teeth emergence time and sequence in
children of Kavre district, Nepal.
Method
A descriptive cross sectional study was conducted in 623 children of age 5 to 14
years from six different schools of Kavre district. The number of permanent tooth
erupted except third molar was recorded along with age and gender. Data were
analysed using SPSS 20.0. Descriptive statistics was used to determine the number
and percentage of permanent teeth emerged at different ages and the mean age
of emergence of each tooth. Student ‘t’ test was used to determine the inter jaw
differences in the mean age of emergence of each tooth.
Result
The study population constituted 50.7% boys and 49.3% girls of the total sample. The
first tooth to emerge was mandibular first molar, whereas maxillary second molar
tended to be the last to emerge in both the genders. Though in general, mandibular
teeth tended to precede the corresponding maxillary teeth in emergence but
significantly only mandibular central, lateral and second premolar emerged earlier
than maxillary.( p ≤ 0.05)
Conclusion
This study can be used as a reference data for clinical and academic purpose especially
for the children of Kavre district, Nepal.
Keyword : Emergence sequence, emergence time, permanent teeth
