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KMID : 1023420090090030257
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Journal of Dental Hygiene Science
2009 Volume.9 No. 3 p.257 ~ p.263
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The Relationship between the 1st Molar Erupted Rate and Age, Height and Weight at Age of Six
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Bae Sung-Suk
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Abstract
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The objective of this study is to establish the number of erupted 1st molar, the age, sex and somatic measures of weight and height in population of Chungcheongnam-do, South Korea based cross sectional study. The consistent and complete data were obtained from 441 children with age of six. SPSS 12.0 was used for various statistical analyses including descriptive, cross tabulation, correlation and regression.Results demonstrates that variation of the number of the erupted 1st molar was explained by age(x2(df) = 117.68), height(x2(df) = 59.74) and weight(x2(df) = 31.69) of children(p < .001). The study also showed the strong correlation among erupted 1st molar rate, age, height and weight (p < .01). Numerical values of correlation among those are following: r = .45 between Erupted 1st molar rate and age; r = .31between erupted 1st molar rate and height; r = .24 between erupted 1st molar rate and weight; r = .40 between age and weight; r = .24 between age and height; r = .54between height and weight. It was concluded that above variables influences one another and the age of the children is the greatest variable that influences the number of erupted 1st molar, followed by height and weight of the children.
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KEYWORD
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The 1st molar erupted rate and age, the 1st molar erupted rate and height, The 1st molar erupted rate and weight, The 1st molar eruption
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