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On-line version ISSN 1029-3019


DE LA TEJERA CHILLON, Alexis et al. Chronology and sequence of the first permanent molars eruption. MEDISAN [online]. 2017, vol.21, n.1, pp.12-18. ISSN 1029-3019.

An observational, descriptive, longitudinal and prospective study was carried out from September, 2013 to March, 2015, to describe the chronology and sequence of the first permanent molars eruption in 219 preschool girls and boys, aged 4-5 years that studied in the educational institutions belonging to the health area of "Mártires del Moncada" Teaching Provincial Stomatological Clinic in Santiago de Cuba. A clinical non invasive exam was practiced in the schools, where the eruption of teeth in these children was registered and it was followed in time until their arrival to the occlusion plane. Percentages, means (through the statistical Student´s t test, with 95 % of confidence) and standard deviations were calculated. Among the main findings were that the mean age of eruption for first molars was 5.25 and 5.31 years, for girls and boys, respectively; and the eruption sequence was 46, 36, 16 and 26, but lower molars erupted before the upper ones, validated by a significant value. It was concluded that the students showed advance in connection with Mayoral and Moyers charts, mainly the girls and that the sequence was the same in both sexes

Keywords : preschool student; dental eruption; permanent molars; eruption chronology; eruption sequence.

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