Abstract
ContextEruption of teeth is influenced by various factors. Very few studies were carried out in the past on the eruption time of teeth in the Indian population.AimThe aim of the study is to determine the time and sequence, gender differences, pattern of symmetry in the eruption of permanent teeth in Hyderabad children.Materials and methodsIn this cross-sectional study, 1654 schoolchildren (806 girls and 848 boys) in the age group of 5 to 15 years from Hyderabad were examined for the status of eruption of permanent teeth.Statistical analysis usedResults were subjected to probit’s regression analysis. The average age at eruption of permanent teeth, excluding third molars, was given as the mean [± standard deviation (SD)] in months for each gender. A table of percentiles of the eruption time was also determined.ResultsUnlike most of the earlier studies which showed that girls are ahead of boys in permanent teeth emergence, no such pattern was observed. No significant difference was found in the eruption of permanent teeth in right and left arches. Eruption of all the mandibular teeth, with the exception of right first premolar (44) in both the genders, was earlier than their maxillary counterparts. There was overall delay in the eruption of permanent teeth and significant delay in the eruption of lower canines in both genders.ConclusionThe significant delay in the eruption of permanent mandibular canines is relevant for orthodontic treatment planning.How to cite this article: Chaitanya P, Reddy JS, Suhasini K, Chandrika IH, Praveen D. Time and Eruption Sequence of Permanent Teeth in Hyderabad Children: A Descriptive Cross-sectional Study. Int J Clin Pediatr Dent 2018;11(4):330-337.
Highlights
The term “eruption” is derived from the Latin word “erumpere” which means to break out
The significant delay in the eruption of permanent mandibular canines is relevant for orthodontic treatment planning
Based on the mean time of eruption (Table 2), the sequence of eruption of permanent teeth is as follows: Maxilla: 6-1-2-4-3-5-7 Mandible: 6-1-2-3-4-5-7 The mean age of eruption of all teeth on right side was earlier in the upper arch except second molar and in the lower arch, the eruption of permanent central incisor, lateral incisor, and second premolar was earlier in the right side (Table 3)
Summary
The term “eruption” is derived from the Latin word “erumpere” which means to break out. It is defined as the “axial or occlusal movement of a tooth from its developmental position within the jaws to its functional position in the occlusal plane.”[1]. Since the end of the nineteenth century, a trend toward earlier eruption of permanent teeth has been reported in industrialized countries. This is thought to be primarily caused by early puberty, which, in turn, is a result of better nutrition and health care for children
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