fa بررسی زمان و ترتیب رویش دندانهای سانترال و اولین مولر دائمی فک پایین در کودکان 8- 5 ساله شهر تهران عمومى General مقاله پژوهشي Research Article <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><span dir="RTL" lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">مقدمه: </span></span></span></span></b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">دانش کافی درمورد زمان و ترتیب صحیح رویش دندانهای دائمی کودکان می تواند در تشخیص به موقع ناهنجاریها و طرح درمان مناسب درکودکان تاثیر بسزایی داشته باشد . براساس دانش ما اطلاعات محدودی در زمینه رویش این دندان ها در شهر تهران وجود دارد. </span></span></span><span dir="LTR" style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">مواد و روش ها :</span></span></span></span></b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""> این تحقیق از نوع توصیفی و به روش مقطعی است، به صورت تصادفی دو منطقه (5 و 16) از بین مناطق 19 گانه آموزش و پرورش شهر تهران انتخاب شدند .پرسشنامه طراحی شده با معاینه 1116 نفر دانش آموز 5 تا 8سال و 11 ماه تکمیل شد. آزمون آماری (کای دو) جهت بررسی عوامل مرتبط از قبیل سن و جنس و آزمون آماری (</span></span></span><span dir="LTR" new="" roman="" style="font-family:" times="">Confidence .Interval</span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">) برای بررسی زمان رویش دندانهای مطالعه شده، مورد استفاده قرار گرفت.</span></span></span><span dir="LTR" style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">یافته ها :</span></span></span></span></b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">&nbsp; میانگین سن رویش مولر اول دائمی فک پایین در دختران 9/0 &plusmn; 7/6ودر پسران &nbsp;7/0 &plusmn;&nbsp; 9/6 &nbsp;&nbsp;و میانگین سن رویش دندان سانترال دائمی فک پایین در دختران &nbsp;8/0&plusmn; 8/6&nbsp; و در پسران 9/0&plusmn; 2/7&nbsp; بود. کمترین سن رویش مربوط به دندان مولر اول دائمی فک پایین در دختران و بیشترین سن رویش مربوط به سانترال دائمی فک پایین در پسران، بوده است. </span></span></span><span dir="LTR" style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">نتیجه گیری:&nbsp; </span></span></span></span></b><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times="">در دختران و پسران دندانهای مولر اول دائمی فک پایین زودتر از سانترال دائمی فک پایین رویش یافت و زمان رویش این دندانها در دختران زودتر از پسران بود. دندان مولر اول دائمی فک پایین در دختران کمترین میانگین سن رویش و&nbsp; سانترال دائمی فک پایین در پسران ، بیشترین میانگین سن رویش را داشت. </span></span></span><span dir="LTR" style="font-family:"Times New Roman","serif""></span></span></span></span></span></span></span><br> &nbsp; <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">Introduction: </span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">knowledge about the correct timing of eruption in children can have a significant impact on the diagnosis of abnormalities in children. There is limited information about eruption of teeth in Tehran. In this study, the time and order of eruption&nbsp; of permanent mandibular central and first molar in students aged 5-8 years in Tehran were determined. </span></span></span></span><span dir="RTL" lang="FA" style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">Materials and Methods: </span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">To conduct this descriptive and cross sectional research, two regions (5 and 16) were randomly selected from 19 educational districts of Tehran .A designed questionnaire was completed by examining 1116 students aged 5 to 8 years and 11 months. The statistical test (chi 2) was used to investigate the related factors such as age and sex and (Confidence .Interval) was used to evaluate the time of eruption.</span></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">Results: </span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">The mean time of permanent mandibular first molar eruption in girls was 6.7 &plusmn; 0.9 and in boys 6.9 &plusmn; 0.7 and the average time of permanent mandibular central eruption in girls was 6.8 &plusmn; 0.8 and in boys was7.2 &plusmn; 0.9. The lowest age was related to the permanent mandibular first molar in girls and the highest age was related to the permanent mandibular centrals in boys. </span></span></span></span><span dir="RTL" lang="FA" style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></span></span></span></span></span><br> <span style="font-size:9pt"><span style="line-height:120%"><span sans-serif="" style="font-family:Arial,"><span style="color:#404040"><b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:#548dd4">Conclusion:</span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> In girls and boys, permanent mandibular first molar erupted earlier than permanent mandibular central And the time of eruption of these teeth in girls was earlier than boys. Permanent mandibular first molar had the lowest mean age of eruption in girls and permanent mandibular central had the highest mean age of eruption in boys.</span></span></span></span></span></span></span></span><br> &nbsp; زمان رویش, سانترال , مولر , فک پایین eruption time, central, molar, mandible. 19 25 http://jiapd.ir/browse.php?a_code=A-10-1-143&slc_lang=fa&sid=1 M Rahmani Andabili محیا رحمانی اندبیلی 10031947532846002334 10031947532846002334 No Iran S Majzoubi سپیده مجذوبی 10031947532846002335 10031947532846002335 Yes Iran A Rashidian علی رشیدیان 10031947532846002336 10031947532846002336 No