Eruption of Permanent Teeth among the Chakhesang Children of Sodzulhou Village, Dimapur District, Nagaland

Abstract

The purpose of the present study is to examine the timing and sequence of eruption of the permanent teeth among the Chakhesang children ofSodzulhou village, Dimapur District, Nagaland. A total sample of105 boys and 110 girls aged between 5 and 15 years were orally examined. The statistical tabulations like percentages, frequencies and median ages were used for analytical purposes. The earliest tooth to erupt is mandibular first molar and the last is the maxillary second molar in both the sexes. Boys are ahead of the girls with regards to the eruption ages of the permanent teeth. All the permanent teeth tend to erupt earlier in the mandible than in maxilla in both the boys and girls. An overall comparison of the median ages of the permanent tooth emergence of the Chakhesang population with some other Indian populations shows that, in the Chakhesang population, the eruption timing is distinctly delayed in the maxillary as well as mandibular second molars, maxillary lateral incisors and canines as compared to other populations. However, the maxillary first premolars and mandibular lateral incisors emerged earlier among the Chakhesang population than among the other Indian populations.