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Eruption Time Estimation of Permanent 1st Molar, Central &, Lateral Incisors in 5.5 - 10 Years Age Children at Al Ramadi City / Iraq

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Abstract

The Parents consider tooth eruption as an important thing in thechild's life development, and they have often showed theirconcern about the timing of eruption of teeth. The purpose ofthis study were to Estimate the average age for eruption time ofPermanent 1st molar, central & lateral incisors in upper & lowerJaw (right & left) in both gender and to Compare the eruptiontime of these teeth between upper & lower Jaw ,right & left side,male &female. This study was conducted at Al Ramadi City /Iraq, where the sample was consisted of “786” children (391male & 395 female) of age 5.5 years to 10 years were theytaken randomly from various schools. Eruption of variouspermanent teeth (1st Molar, Central & Lateral Incisors teeth)were noted in both jaws and both sides. In our study we foundthat the permanent 1st molars were the first permanent tooththat erupts in all children at the age between 5.87 – 7.96 yearson both jaws and on both right and left sides with the mean ageof eruption at 6.57 ± 0.55 years in lower jaw and 6.62 ± 0.53years in upper jaw. In addition to that our study showed that thenext permanent teeth to erupt were central incisors which eruptat the age between 6.14 – 8.93 years on both jaws and on bothright and left sides with the mean age of eruption at 7.23 ± 0.61years in lower jaw and 6.29 ± 0.57 years in upper jaw. Finally,the eruption of permanent lateral incisors were at the agebetween 7.66 – 9.93 years on both jaws and on both right andleft sides with the mean age of eruption at 8.89 ± 0.56 years inlower jaw and 8.93 ± 0.55 years in upper jaw. The teeth eruptedin female earlier than male and in the lower Jaw than upperJaw. In the most cases the right lower teeth erupted earlier thanthe other quadrant of both jaws. In general, we found that therewas delay in the time of eruption of nearly all the teeth thatwere included in this study.

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