<?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>2026</year>
				<month>6</month>
				<day>1</day>
			</pubdate>
			<volume>15</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>Bond strength of an epoxy resin-based sealer modified with nano-hydroxyapatite and beta tricalcium phosphate to root dentin</title>
				<subject_fa></subject_fa>
				<subject></subject>
				<content_type_fa></content_type_fa>
				<content_type>Original Article</content_type>
				<abstract_fa><![CDATA[]]></abstract_fa>
				<abstract><![CDATA[Objective: This study evaluated the push-out bond strength of an epoxy resin-based sealer (AH Plus®) modified with nano-hydroxyapatite (n-HA) and β-tricalcium phosphate (β-TCP), compared with an unmodified control group.Methods: In this in vitro study, β-tricalcium phosphate and nano-hydroxyapatite were synthesized by wet chemical precipitation, sintered, and then combined to obtain biphasic calcium phosphate. The prepared biphasic calcium phosphate was subsequently incorporated into AH Plus sealer at a concentration of 2.5 wt%. Forty-six maxillary anterior teeth were instrumented and randomly assigned to two groups: unmodified AH Plus sealer (control group) and AH Plus sealer modified with 2.5 wt% biphasic calcium phosphate (experimental group). Obturation was performed using the single-cone technique. After storage at 37°C and 100% humidity for 48 hours, 1-mm-thick root slices were prepared from the coronal, middle, and apical thirds and subjected to push-out bond strength testing using a universal testing machine. Failure modes were evaluated under a stereomicroscope.Results: The experimental group showed significantly higher push-out bond strength than the control group (138.74 ± 19.44 N vs. 120.65 ± 19.52 N; P=0.003). Cohesive failure was the most frequent failure mode in the experimental group (39.1%), whereas adhesive failure was the most frequent in the control group (43.5%). However, the difference in failure modes was not statistically significant between the groups (P&gt;0.05).Conclusions: The incorporation of β-TCP and n-HA as biphasic calcium phosphate into AH Plus sealer was associated with significantly higher push-out bond strength compared with the unmodified control, indicating improved resistance to dislodgement from radicular dentin.]]></abstract>
				<keyword_fa></keyword_fa>
				<keyword>Canals sealer, Dental Cements, Hydroxyapatites, Materials testing, root canal obturation, Tricalcium phosphate</keyword>
				<start_page>81</start_page>
				<end_page>87</end_page>
				<web_url>https://jdmt.mums.ac.ir/article_28047.html</web_url>
			<author_list><author>
				<first_name>Murali</first_name>
				<middle_name></middle_name>
				<last_name>Sivakumar</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>drmuralisivakumar@gmail.com</email>
				<code>123278</code>
				<coreauthor>No</coreauthor>
				<affiliation>Department of Conservative Dentistry and Endodontics, Sathyabama Institute of Science and Technology, Chennai, India</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Nagajothika</first_name>
				<middle_name></middle_name>
				<last_name>Thanthondrikkannan</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>jothikanaga140@gmail.com</email>
				<code>123277</code>
				<coreauthor>Yes</coreauthor>
				<affiliation>Sathyabama Institute of Science and Technology, Chennai, India</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author></author_list>
				</article>
			</articleset>
			</journal>