<?xml version="1.0" encoding="utf-8"?>
			<journal>
			<title>Journal of Dental Materials and Techniques</title>
			<title_fa></title_fa>
			<short_title>JDMT</short_title>
			<subject>Medical Sciences</subject>
			<web_url>https://jdmt.mums.ac.ir/</web_url>
			<journal_hbi_system_id>0</journal_hbi_system_id>
			<journal_hbi_system_user></journal_hbi_system_user>
			<journal_id_issn>2322-4150</journal_id_issn>
			<journal_id_issn_online>2252-0317</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>0</year>
				<month>0</month>
				<day>1</day>
			</pubdate>
			<pubdate>
				<type>gregorian</type>
				<year>2015</year>
				<month>6</month>
				<day>1</day>
			</pubdate>
			<volume>4</volume>
			<number>2</number>
			<publish_type>online</publish_type>
			<publish_edition>1</publish_edition>
			<article_type>fulltext</article_type>
			<articleset><article>
				<language>en</language>
				<article_id_issn></article_id_issn>
				<article_id_issn_online></article_id_issn_online>
				<article_id_pubmed></article_id_pubmed>
				<article_id_pii></article_id_pii>
				<article_id_doi></article_id_doi>
				<article_id_iranmedex></article_id_iranmedex>
				<article_id_magiran></article_id_magiran>
				<article_id_sid></article_id_sid>
				<title_fa></title_fa>
				<title>The Effect of a Glass Ceramic Insert in Sandwich Technique on Microleakage in Class II Composite Resin Restorations</title>
				<subject_fa></subject_fa>
				<subject></subject>
				<content_type_fa></content_type_fa>
				<content_type></content_type>
				<abstract_fa><![CDATA[]]></abstract_fa>
				<abstract><![CDATA[Introduction: The aim of the present study was to evaluate the effect of glass ceramic insert in the sandwich technique to reduce microleakage in class II composite resin restorations. Methods: Sixty sound human upper second premolars were selected and randomly divided into six groups (n=10). Class II box-only cavities were prepared in distal aspects of each tooth with gingival margin located approximately 0.5 mm below the CEJ. Group A (Control) was restored incrementally with Tetric Ceram and a total-etch bonding technique. Group B and C were restored with sandwich technique using a compomer (Compoglass F) or flowable composite resin (Tetric Flow) as the lining material at gingival floor, respectively. Group D, E and F were represented in the same way as group A, B and C and a glass ceramic insert was added to the composite bulk. The specimens were thermo-mechanically cycled, and then immersed in 0.5 % basic fuschin for 24 hours. Dye penetration was detected using a sectioning technique. Results: No significant difference was found between total-etch bonding and sandwich techniques. The placement of an insert caused an increase in   microleakage in all groups significantly (P &lt; 0.05). Group D (no liner/ with glass insert) showed the highest amount of microleakage and Group A (no liner/ without glass insert) resulted in the lowest amount of total microleakage. Conclusion: Placement of glass ceramic insert could not decrease gingival leakage. According to the limitation of this study a composite resin restorations with incremental technique is recommended]]></abstract>
				<keyword_fa></keyword_fa>
				<keyword>Microleakage, Posterior composite resin restoration, Sandwich technique, glass ceramic insert</keyword>
				<start_page>57</start_page>
				<end_page>64</end_page>
				<web_url>https://jdmt.mums.ac.ir/article_4116.html</web_url>
			<author_list><author>
				<first_name>Hila</first_name>
				<middle_name></middle_name>
				<last_name>Hajizadeh</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email></email>
				<code>15881</code>
				<coreauthor>No</coreauthor>
				<affiliation>Dental Research Center and Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Saied Mostafa</first_name>
				<middle_name></middle_name>
				<last_name>Moazzami</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>moazzamim@mums.ac.ir &amp; smm1342@yahoo.com</email>
				<code>15882</code>
				<coreauthor>Yes</coreauthor>
				<affiliation>Dental Research Center and Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Nasrin</first_name>
				<middle_name></middle_name>
				<last_name>Sarabi</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email></email>
				<code>15883</code>
				<coreauthor>No</coreauthor>
				<affiliation>Dental Research Center and Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Sara</first_name>
				<middle_name></middle_name>
				<last_name>Majidinia</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email></email>
				<code>15884</code>
				<coreauthor>No</coreauthor>
				<affiliation>Dental Materials Research Center and Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author></author_list>
				</article>
			</articleset>
			</journal>