Effect of Ultrasonic Activation on pH and Calcium Released by Calcium Hydroxide Pastes in Simulated External Root Resorption
Abstract Introduction The purpose of this study was to analyze the influence of ultrasonic activation of calcium hydroxide (CH) pastes on pH and calcium release in simulated external root resorptions. Methods Forty-six bovine incisors had their canals cleaned and instrumented, and defects were creat...
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Veröffentlicht in: | Journal of endodontics 2012-06, Vol.38 (6), p.834-837 |
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creator | Duarte, Marco Antonio Hungaro, PhD Balan, Nickolas V., DDS Zeferino, Marcia A., PhD Vivan, Rodrigo R., MSc Morais, Carlos Alberto H., PhD Tanomaru-Filho, Mário, PhD Ordinola-Zapata, Ronald, MSc Moraes, Ivalgo G., PhD |
description | Abstract Introduction The purpose of this study was to analyze the influence of ultrasonic activation of calcium hydroxide (CH) pastes on pH and calcium release in simulated external root resorptions. Methods Forty-six bovine incisors had their canals cleaned and instrumented, and defects were created in the external middle third of the roots, which were then used for the study. The teeth were externally made impermeable, except for the defected area, and divided into the following 4 groups containing 10 samples each according to the CH paste and the use or not of the ultrasonic activation: group 1: propylene glycol without ultrasonic activation, group 2: distilled water without ultrasonic activation, group 3: propylene glycol with ultrasonic activation, and group 4: distilled water with ultrasonic activation. After filling the canals with the paste, the teeth were restored and individually immersed into flasks with ultrapure water. The samples were placed into other flasks after 7, 15, and 30 days so that the water pH level could be measured by means of a pH meter. Calcium release was measured by means of an atomic absorption spectrophotometer. Six teeth were used as controls. The results were statistically compared using the Kruskal-Wallis and Mann-Whitney U tests ( P < .05). Results For all periods analyzed, the pH level was found to be higher when the CH paste was activated with ultrasound. Calcium release was significantly greater ( P < .05) using ultrasonic activation after 7 and 30 days. Conclusions The ultrasonic activation of CH pastes favored a higher pH level and calcium release in simulated external root resorptions. |
doi_str_mv | 10.1016/j.joen.2012.03.005 |
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Methods Forty-six bovine incisors had their canals cleaned and instrumented, and defects were created in the external middle third of the roots, which were then used for the study. The teeth were externally made impermeable, except for the defected area, and divided into the following 4 groups containing 10 samples each according to the CH paste and the use or not of the ultrasonic activation: group 1: propylene glycol without ultrasonic activation, group 2: distilled water without ultrasonic activation, group 3: propylene glycol with ultrasonic activation, and group 4: distilled water with ultrasonic activation. After filling the canals with the paste, the teeth were restored and individually immersed into flasks with ultrapure water. The samples were placed into other flasks after 7, 15, and 30 days so that the water pH level could be measured by means of a pH meter. Calcium release was measured by means of an atomic absorption spectrophotometer. Six teeth were used as controls. The results were statistically compared using the Kruskal-Wallis and Mann-Whitney U tests ( P < .05). Results For all periods analyzed, the pH level was found to be higher when the CH paste was activated with ultrasound. Calcium release was significantly greater ( P < .05) using ultrasonic activation after 7 and 30 days. Conclusions The ultrasonic activation of CH pastes favored a higher pH level and calcium release in simulated external root resorptions.</description><identifier>ISSN: 0099-2399</identifier><identifier>EISSN: 1878-3554</identifier><identifier>DOI: 10.1016/j.joen.2012.03.005</identifier><identifier>PMID: 22595121</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Animals ; Calcium - analysis ; Calcium Hydroxide - chemistry ; Calcium hydroxide paste ; calcium release ; Cattle ; Dentistry ; Endocrinology & Metabolism ; Hydrogen-Ion Concentration ; Incisor ; Propylene Glycol - chemistry ; Root Canal Irrigants - chemistry ; root resorption ; Root Resorption - therapy ; Sonication ; Spectrophotometry, Atomic ; ultrasound ; Water</subject><ispartof>Journal of endodontics, 2012-06, Vol.38 (6), p.834-837</ispartof><rights>American Association of Endodontists</rights><rights>2012 American Association of Endodontists</rights><rights>Copyright © 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c477t-599fc84b26a38da1ad90439a85b7ca37b1e4b358ddd0bd6cfcd6b97873b265553</citedby><cites>FETCH-LOGICAL-c477t-599fc84b26a38da1ad90439a85b7ca37b1e4b358ddd0bd6cfcd6b97873b265553</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0099239912002865$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22595121$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Duarte, Marco Antonio Hungaro, PhD</creatorcontrib><creatorcontrib>Balan, Nickolas V., DDS</creatorcontrib><creatorcontrib>Zeferino, Marcia A., PhD</creatorcontrib><creatorcontrib>Vivan, Rodrigo R., MSc</creatorcontrib><creatorcontrib>Morais, Carlos Alberto H., PhD</creatorcontrib><creatorcontrib>Tanomaru-Filho, Mário, PhD</creatorcontrib><creatorcontrib>Ordinola-Zapata, Ronald, MSc</creatorcontrib><creatorcontrib>Moraes, Ivalgo G., PhD</creatorcontrib><title>Effect of Ultrasonic Activation on pH and Calcium Released by Calcium Hydroxide Pastes in Simulated External Root Resorption</title><title>Journal of endodontics</title><addtitle>J Endod</addtitle><description>Abstract Introduction The purpose of this study was to analyze the influence of ultrasonic activation of calcium hydroxide (CH) pastes on pH and calcium release in simulated external root resorptions. Methods Forty-six bovine incisors had their canals cleaned and instrumented, and defects were created in the external middle third of the roots, which were then used for the study. The teeth were externally made impermeable, except for the defected area, and divided into the following 4 groups containing 10 samples each according to the CH paste and the use or not of the ultrasonic activation: group 1: propylene glycol without ultrasonic activation, group 2: distilled water without ultrasonic activation, group 3: propylene glycol with ultrasonic activation, and group 4: distilled water with ultrasonic activation. After filling the canals with the paste, the teeth were restored and individually immersed into flasks with ultrapure water. The samples were placed into other flasks after 7, 15, and 30 days so that the water pH level could be measured by means of a pH meter. Calcium release was measured by means of an atomic absorption spectrophotometer. Six teeth were used as controls. The results were statistically compared using the Kruskal-Wallis and Mann-Whitney U tests ( P < .05). Results For all periods analyzed, the pH level was found to be higher when the CH paste was activated with ultrasound. Calcium release was significantly greater ( P < .05) using ultrasonic activation after 7 and 30 days. Conclusions The ultrasonic activation of CH pastes favored a higher pH level and calcium release in simulated external root resorptions.</description><subject>Animals</subject><subject>Calcium - analysis</subject><subject>Calcium Hydroxide - chemistry</subject><subject>Calcium hydroxide paste</subject><subject>calcium release</subject><subject>Cattle</subject><subject>Dentistry</subject><subject>Endocrinology & Metabolism</subject><subject>Hydrogen-Ion Concentration</subject><subject>Incisor</subject><subject>Propylene Glycol - chemistry</subject><subject>Root Canal Irrigants - chemistry</subject><subject>root resorption</subject><subject>Root Resorption - therapy</subject><subject>Sonication</subject><subject>Spectrophotometry, Atomic</subject><subject>ultrasound</subject><subject>Water</subject><issn>0099-2399</issn><issn>1878-3554</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kV2L1DAUhoMo7rj6B7yQXHrTmo-mbUCEZRgdYUHZda9DmpxCaqYZk3TZAX-8KbPuhRdC4EB43hfOcxB6S0lNCW0_TPUUYK4ZoawmvCZEPEMb2nd9xYVonqMNIVJWjEt5gV6lNBFCO867l-iCMSEFZXSDfu_GEUzGYcR3PkedwuwMvjLZ3evswozLO-6xni3eam_ccsA34EEnsHg4Pf3tTzaGB2cBf9cpQ8JuxrfusHidC7h7yBBn7fFNCLnkU4jHtfw1ejFqn-DN47xEd593P7b76vrbl6_bq-vKNF2XKyHlaPpmYK3mvdVUW0kaLnUvhs5o3g0UmoGL3lpLBtua0dh2kF3f8RIRQvBL9P7ce4zh1wIpq4NLBrzXM4QlqWJTENn0HSkoO6MmhpQijOoY3UHHU4FWrlWTWq2r1boiXBXrJfTusX8ZDmCfIn81F-DjGYCy5b2DqJJxMBuwLhb7ygb3__5P_8SNd-VO2v-EE6QpLKvdsodKJaNu17uvZ6eMENa3gv8BhlSpcw</recordid><startdate>20120601</startdate><enddate>20120601</enddate><creator>Duarte, Marco Antonio Hungaro, PhD</creator><creator>Balan, Nickolas V., DDS</creator><creator>Zeferino, Marcia A., PhD</creator><creator>Vivan, Rodrigo R., MSc</creator><creator>Morais, Carlos Alberto H., PhD</creator><creator>Tanomaru-Filho, Mário, PhD</creator><creator>Ordinola-Zapata, Ronald, MSc</creator><creator>Moraes, Ivalgo G., PhD</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20120601</creationdate><title>Effect of Ultrasonic Activation on pH and Calcium Released by Calcium Hydroxide Pastes in Simulated External Root Resorption</title><author>Duarte, Marco Antonio Hungaro, PhD ; Balan, Nickolas V., DDS ; Zeferino, Marcia A., PhD ; Vivan, Rodrigo R., MSc ; Morais, Carlos Alberto H., PhD ; Tanomaru-Filho, Mário, PhD ; Ordinola-Zapata, Ronald, MSc ; Moraes, Ivalgo G., PhD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c477t-599fc84b26a38da1ad90439a85b7ca37b1e4b358ddd0bd6cfcd6b97873b265553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Animals</topic><topic>Calcium - analysis</topic><topic>Calcium Hydroxide - chemistry</topic><topic>Calcium hydroxide paste</topic><topic>calcium release</topic><topic>Cattle</topic><topic>Dentistry</topic><topic>Endocrinology & Metabolism</topic><topic>Hydrogen-Ion Concentration</topic><topic>Incisor</topic><topic>Propylene Glycol - chemistry</topic><topic>Root Canal Irrigants - chemistry</topic><topic>root resorption</topic><topic>Root Resorption - therapy</topic><topic>Sonication</topic><topic>Spectrophotometry, Atomic</topic><topic>ultrasound</topic><topic>Water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Duarte, Marco Antonio Hungaro, PhD</creatorcontrib><creatorcontrib>Balan, Nickolas V., DDS</creatorcontrib><creatorcontrib>Zeferino, Marcia A., PhD</creatorcontrib><creatorcontrib>Vivan, Rodrigo R., MSc</creatorcontrib><creatorcontrib>Morais, Carlos Alberto H., PhD</creatorcontrib><creatorcontrib>Tanomaru-Filho, Mário, PhD</creatorcontrib><creatorcontrib>Ordinola-Zapata, Ronald, MSc</creatorcontrib><creatorcontrib>Moraes, Ivalgo G., PhD</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of endodontics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Duarte, Marco Antonio Hungaro, PhD</au><au>Balan, Nickolas V., DDS</au><au>Zeferino, Marcia A., PhD</au><au>Vivan, Rodrigo R., MSc</au><au>Morais, Carlos Alberto H., PhD</au><au>Tanomaru-Filho, Mário, PhD</au><au>Ordinola-Zapata, Ronald, MSc</au><au>Moraes, Ivalgo G., PhD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Ultrasonic Activation on pH and Calcium Released by Calcium Hydroxide Pastes in Simulated External Root Resorption</atitle><jtitle>Journal of endodontics</jtitle><addtitle>J Endod</addtitle><date>2012-06-01</date><risdate>2012</risdate><volume>38</volume><issue>6</issue><spage>834</spage><epage>837</epage><pages>834-837</pages><issn>0099-2399</issn><eissn>1878-3554</eissn><abstract>Abstract Introduction The purpose of this study was to analyze the influence of ultrasonic activation of calcium hydroxide (CH) pastes on pH and calcium release in simulated external root resorptions. Methods Forty-six bovine incisors had their canals cleaned and instrumented, and defects were created in the external middle third of the roots, which were then used for the study. The teeth were externally made impermeable, except for the defected area, and divided into the following 4 groups containing 10 samples each according to the CH paste and the use or not of the ultrasonic activation: group 1: propylene glycol without ultrasonic activation, group 2: distilled water without ultrasonic activation, group 3: propylene glycol with ultrasonic activation, and group 4: distilled water with ultrasonic activation. After filling the canals with the paste, the teeth were restored and individually immersed into flasks with ultrapure water. The samples were placed into other flasks after 7, 15, and 30 days so that the water pH level could be measured by means of a pH meter. Calcium release was measured by means of an atomic absorption spectrophotometer. Six teeth were used as controls. The results were statistically compared using the Kruskal-Wallis and Mann-Whitney U tests ( P < .05). Results For all periods analyzed, the pH level was found to be higher when the CH paste was activated with ultrasound. Calcium release was significantly greater ( P < .05) using ultrasonic activation after 7 and 30 days. Conclusions The ultrasonic activation of CH pastes favored a higher pH level and calcium release in simulated external root resorptions.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>22595121</pmid><doi>10.1016/j.joen.2012.03.005</doi><tpages>4</tpages></addata></record> |
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subjects | Animals Calcium - analysis Calcium Hydroxide - chemistry Calcium hydroxide paste calcium release Cattle Dentistry Endocrinology & Metabolism Hydrogen-Ion Concentration Incisor Propylene Glycol - chemistry Root Canal Irrigants - chemistry root resorption Root Resorption - therapy Sonication Spectrophotometry, Atomic ultrasound Water |
title | Effect of Ultrasonic Activation on pH and Calcium Released by Calcium Hydroxide Pastes in Simulated External Root Resorption |
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