<?xml version="1.0" encoding="utf-8"?>
<journal>
<title>Razi Journal of Medical Sciences</title>
<title_fa>مجله علوم پزشکی رازی</title_fa>
<short_title>RJMS</short_title>
<subject>Medical Sciences</subject>
<web_url>http://rjms.iums.ac.ir</web_url>
<journal_hbi_system_id>39</journal_hbi_system_id>
<journal_hbi_system_user>journal39</journal_hbi_system_user>
<journal_id_issn>2228-7043</journal_id_issn>
<journal_id_issn_online>2228-7051</journal_id_issn_online>
<journal_id_pii></journal_id_pii>
<journal_id_doi></journal_id_doi>
<journal_id_iranmedex></journal_id_iranmedex>
<journal_id_magiran></journal_id_magiran>
<journal_id_sid></journal_id_sid>
<journal_id_nlai></journal_id_nlai>
<journal_id_science></journal_id_science>
<language>en</language>
<pubdate>
	<type>jalali</type>
	<year>1392</year>
	<month>8</month>
	<day>1</day>
</pubdate>
<pubdate>
	<type>gregorian</type>
	<year>2013</year>
	<month>11</month>
	<day>1</day>
</pubdate>
<volume>20</volume>
<number>113</number>
<publish_type>online</publish_type>
<publish_edition>1</publish_edition>
<article_type>fulltext</article_type>
<articleset>
	<article>


	<language>fa</language>
	<article_id_doi></article_id_doi>
	<title_fa>مقایسه مدل‌های داده های طولی در انبساط آبی سه کامپوزیت متداول  </title_fa>
	<title>Comparison of longitudinal data models for hygroscopic expansion of three common composites</title>
	<subject_fa>آمار حیاتی</subject_fa>
	<subject>Biostatistics</subject>
	<content_type_fa>پژوهشي</content_type_fa>
	<content_type>Research</content_type>
	<abstract_fa>

&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%&quot; dir=&quot;rtl&quot;&gt;&lt;b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;زمینه و هدف&lt;/span&gt;&lt;/b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;:
مطالعه طولی کاربرد فراوانی در علوم پزشکی و اجتماعی دارد. با توجه به انجام
اندازه گیری های مکرر در این‌گونه مطالعات، شرط استقلال بین مشاهدات برقرار نبوده
و لذا باید مدل های مناسب انتخاب شوند. در این مطالعه کاربرد مدل های حاشیه ای و
انتقال برای تحلیل داده های طولی مربوط به انبساط آبی کامپوزیت ها، نشان داده می
شود.&lt;o:p /&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%&quot; dir=&quot;rtl&quot;&gt;&lt;b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;روش کار&lt;/span&gt;&lt;/b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;:
در این مطالعه طولی داده های مربوط به سه نوع کامپوزیت مختلف (&lt;/span&gt;&lt;span style=&quot;top: 4pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -4.0pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shapetype id=&quot;_x0000_t75&quot; stroked=&quot;f&quot; filled=&quot;f&quot; path=&quot;m@4@5l@4@11@9@11@9@5xe&quot; o:preferrelative=&quot;t&quot; o:spt=&quot;75&quot; coordsize=&quot;21600,21600&quot;&gt;
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 &lt;v:path o:connecttype=&quot;rect&quot; gradientshapeok=&quot;t&quot; o:extrusionok=&quot;f&quot;&gt;
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 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image001.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;، &lt;/span&gt;&lt;span style=&quot;top: 4pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -4.0pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shape id=&quot;_x0000_i1025&quot; style=&quot;width: 15pt height: 12pt&quot; type=&quot;#_x0000_t75&quot;&gt;
 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image002.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;font size=&quot;2&quot;&gt;&lt;font face=&quot;B Mitra&quot;&gt;&lt;span style=&quot;mso-spacerun: yes&quot;&gt; &lt;/span&gt;و &lt;/font&gt;&lt;/font&gt;&lt;/span&gt;&lt;span style=&quot;top: 4pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -4.0pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shape id=&quot;_x0000_i1025&quot; style=&quot;width: 25.5pt height: 12pt&quot; type=&quot;#_x0000_t75&quot;&gt;
 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image003.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;) استفاده شده است. این کامپوزیت ها به مدت 3 ماه در دو محیط آب و
بزاق دهان قرار گرفته و انبساط آبی آن‌ها 18 بار در فواصل زمانی معین بر روی 540
نمونه اندازه گیری شد. تحلیل آماری داده ها با استفاده از مدل های حاشیه ای و
انتقال و با برنامه نویسی در محیط نرم افزار &lt;/span&gt;&lt;span style=&quot;top: 4pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -4.0pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shape id=&quot;_x0000_i1025&quot; style=&quot;width: 5.25pt height: 12pt&quot; type=&quot;#_x0000_t75&quot;&gt;
 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image004.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;line-height: 115% font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;font size=&quot;2&quot;&gt;&lt;font face=&quot;B Mitra&quot;&gt;&lt;span style=&quot;mso-spacerun: yes&quot;&gt; &lt;/span&gt;انجام شده است.&lt;/font&gt;&lt;/font&gt;&lt;/span&gt;&lt;span lang=&quot;FA&quot; style=&quot;font-family: &quot;B Mitra&quot; mso-bidi-language: FA mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri&quot;&gt;&lt;o:p /&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%&quot; dir=&quot;rtl&quot;&gt;&lt;b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;یافته‌ها:&lt;/span&gt;&lt;/b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 13pt mso-bidi-language: FA&quot;&gt; &lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;نتایج
بررسی نشان دهنده آن بود که در مدل‌ حاشیه‌ای تنها اثر نوع کامپوزیت‌ها بر انبساط
آبی معنادار بود (&lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-family: &quot;B Mitra&quot; mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;p=0.025&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt; و &lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-family: &quot;B Mitra&quot; mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;p=0.045&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;) و در مدل انتقال، اختلاف آماری معنی‌دار بین کامپوزیت‌ها (&lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-family: &quot;B Mitra&quot; mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;p=0.001&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt; و &lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-family: &quot;B Mitra&quot; mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;p=0.037&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;) و همچنین محیط نگهداری (&lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-family: &quot;B Mitra&quot; mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;p=0.046&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;) بر انبساط آبی وجود داشت.&lt;/span&gt;&lt;span lang=&quot;FA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 12pt mso-bidi-language: FA mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri&quot;&gt;&lt;o:p /&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%&quot; dir=&quot;rtl&quot;&gt;&lt;b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;نتیجه&lt;/span&gt;&lt;/b&gt;&lt;b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 9pt mso-bidi-font-size: 10.0pt&quot; dir=&quot;ltr&quot;&gt;‌&lt;/span&gt;&lt;/b&gt;&lt;b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;گیری&lt;/span&gt;&lt;/b&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;:
نتایج نشان دهنده آن است که استفاده از روش انتقال می تواند جایگزین مناسبی برای
روش های متداول تحلیل داده های طولی باشد. همچنین با توجه به معنادار بودن اثر نوع
کامپوزیت بر انبساط آبی در هر دو مدل، بهتر است که از کامپوزیت های مناسب تر که در
طول زمان افزایش حجم کمتری می یابند (مانند &lt;/span&gt;&lt;span style=&quot;top: 4pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -4.0pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shape id=&quot;_x0000_i1025&quot; style=&quot;width: 18.75pt height: 12pt&quot; type=&quot;#_x0000_t75&quot;&gt;
 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image001.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span lang=&quot;AR-SA&quot; style=&quot;font-family: &quot;B Mitra&quot; font-size: 10pt mso-ascii-font-family: &quot;Times New Roman&quot; mso-hansi-font-family: &quot;Times New Roman&quot; mso-ansi-font-size: 9.0pt&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;) برای ترمیم دندان ها استفاده شود.&lt;o:p /&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;</abstract_fa>
	<abstract>

&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt mso-bidi-language: FA&quot;&gt;Background: &lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;Longitudinal
studies are widely used in medical and social sciences. According to repeated
measurements in these studies, independence assumption is not observed and
therefore suitable models should be selected. In this study, application of
marginal and transition models for analyzing the longitudinal data related to
hygroscopic expansion of composite is shown.&lt;/span&gt;&lt;font size=&quot;4&quot;&gt;&lt;font face=&quot;Times New Roman&quot;&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 13pt&quot;&gt;&lt;span style=&quot;mso-spacerun: yes&quot;&gt; &lt;/span&gt;&lt;/span&gt;&lt;span style=&quot;font-size: 13pt mso-bidi-font-family: &quot;B Mitra&quot;&quot;&gt;&lt;o:p /&gt;&lt;/span&gt;&lt;/font&gt;&lt;/font&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph tab-stops: right 7.3pt center 265.9pt&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;Methods&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;: In this
longitudinal study, laboratory data from three common composites (&lt;/span&gt;&lt;span style=&quot;top: 5.5pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -5.5pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shapetype id=&quot;_x0000_t75&quot; stroked=&quot;f&quot; filled=&quot;f&quot; path=&quot;m@4@5l@4@11@9@11@9@5xe&quot; o:preferrelative=&quot;t&quot; o:spt=&quot;75&quot; coordsize=&quot;21600,21600&quot;&gt;
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is used. These composites were kept in two different environments (distilled
water and natural mouth saliva) for three months and their cylinder length was
measured 18 times after preparation of 540 samples. Statistical analysis was
done using marginal and transition model and programming with R software.&lt;span lang=&quot;AR-SA&quot; dir=&quot;rtl&quot;&gt;&lt;o:p /&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph tab-stops: right 7.3pt center 265.9pt&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;Results:&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-size: 12pt mso-bidi-font-family: &quot;B Mitra&quot; mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri&quot;&gt;&lt;font face=&quot;Calibri&quot;&gt; &lt;/font&gt;&lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;Results show that in marginal model,
composite effect was significant (p=0.025, p=0.045) and in transition model,
both composite (p&lt;0.001, p=0.037) and environment (p=0.046) were
significant.&lt;o:p /&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: kashida text-kashida: 0%&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;Conclusions:&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt; Results show
that transitional model can be a good alternative to common methods of
analyzing longitudinal data. As composite was significant in both models, it is
better to use suited composites which have lower hygroscopic expansion during
the time (like&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;span dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style=&quot;top: 5.5pt line-height: 115% font-family: &quot;Calibri&quot;,&quot;sans-serif&quot; font-size: 11pt position: relative mso-bidi-language: AR-SA mso-bidi-font-family: Arial mso-ascii-theme-font: minor-latin mso-fareast-font-family: &quot;Times New Roman&quot; mso-fareast-theme-font: minor-fareast mso-hansi-theme-font: minor-latin mso-bidi-theme-font: minor-bidi mso-text-raise: -5.5pt mso-ansi-language: EN-US mso-fareast-language: EN-US&quot;&gt;&lt;v:shape id=&quot;_x0000_i1025&quot; style=&quot;width: 20.25pt height: 16.5pt&quot; type=&quot;#_x0000_t75&quot;&gt;
 &lt;v:imagedata chromakey=&quot;white&quot; src=&quot;file:///C:UsersMRS~1.NAZAppDataLocalTempmsohtmlclip1 1clip_image004.png&quot;&gt; &lt;/v:imagedata&gt;&lt;/v:shape&gt;&lt;/span&gt;&lt;span style=&quot;font-family: &quot;Times New Roman&quot;,&quot;serif&quot; font-size: 12pt&quot;&gt;&lt;font size=&quot;3&quot;&gt;&lt;font face=&quot;Times New Roman&quot;&gt;&lt;span style=&quot;mso-spacerun: yes&quot;&gt; &lt;/span&gt;). &lt;o:p /&gt;&lt;/font&gt;&lt;/font&gt;&lt;/span&gt;&lt;/p&gt;&lt;font face=&quot;Times New Roman&quot; size=&quot;3&quot;&gt; &lt;/font&gt;</abstract>
	<keyword_fa>مطالعه طولی، مدل حاشیه ای، مدل انتقال، مدل چندسطحی، انبساط آبی.</keyword_fa>
	<keyword>Longitudinal study, Marginal model, Transition model, Multilevel model, Hygroscopic expansion.</keyword>
	<start_page>1</start_page>
	<end_page>9</end_page>
	<web_url>http://rjms.iums.ac.ir/browse.php?a_code=A-10-1-1463&amp;slc_lang=fa&amp;sid=1</web_url>


<author_list>
	<author>
	<first_name>Nasim</first_name>
	<middle_name></middle_name>
	<last_name> Vahabi</last_name>
	<suffix></suffix>
	<first_name_fa>نسیم</first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa> وهابی</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024292</code>
	<orcid>3900319475328460024292</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>Modares University</affiliation>
	<affiliation_fa>دانشگاه تربیت مدرس</affiliation_fa>
	 </author>


	<author>
	<first_name>Masoud</first_name>
	<middle_name></middle_name>
	<last_name> Salehi</last_name>
	<suffix></suffix>
	<first_name_fa> مسعود </first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa>صالحی</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024293</code>
	<orcid>3900319475328460024293</orcid>
	<coreauthor>Yes
</coreauthor>
	<affiliation>Iran University of Medical Sciences</affiliation>
	<affiliation_fa>دانشگاه علوم پزشکی ایران</affiliation_fa>
	 </author>


	<author>
	<first_name>Farid</first_name>
	<middle_name></middle_name>
	<last_name> Zayeri</last_name>
	<suffix></suffix>
	<first_name_fa>فرید</first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa> زایری</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024294</code>
	<orcid>3900319475328460024294</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>Shahid Beheshti University of Medical Sciences</affiliation>
	<affiliation_fa>دانشگاه علوم پزشکی شهید بهشتی</affiliation_fa>
	 </author>


	<author>
	<first_name>Hassan</first_name>
	<middle_name></middle_name>
	<last_name> Torabzadeh</last_name>
	<suffix></suffix>
	<first_name_fa>حسن</first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa> تراب زاده</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024295</code>
	<orcid>3900319475328460024295</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>Shahid Beheshti University of Medical Sciences</affiliation>
	<affiliation_fa>دانشگاه علوم پزشکی شهید بهشتی</affiliation_fa>
	 </author>


	<author>
	<first_name>Kazem</first_name>
	<middle_name></middle_name>
	<last_name> Nasserinajad</last_name>
	<suffix></suffix>
	<first_name_fa>کاظم </first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa>ناصری نژاد</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024296</code>
	<orcid>3900319475328460024296</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>Erasmus MC, Rotterdam</affiliation>
	<affiliation_fa>دانشگاه اراسموس، رتردام، هلند</affiliation_fa>
	 </author>


	<author>
	<first_name>Sara</first_name>
	<middle_name></middle_name>
	<last_name> Razmavar</last_name>
	<suffix></suffix>
	<first_name_fa>سارا</first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa> رزم آور</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>3900319475328460024297</code>
	<orcid>3900319475328460024297</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>Shahid Beheshti University of Medical Sciences</affiliation>
	<affiliation_fa>دانشگاه علوم پزشکی شهید بهشتی</affiliation_fa>
	 </author>


</author_list>


	</article>
</articleset>
</journal>
