Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch
Objectives To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions. Materials and methods A human mandible had two sockets prepared—anterior and posterior regions—to accommodate a single-rooted tooth. Two CBCT units, P...
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| Veröffentlicht in: | Clinical oral investigations 2021-02, Vol.25 (2), p.571-579 |
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| creator | Fontenele, Rocharles C. Farias Gomes, Amanda Rosado, Lucas P. Lopes Neves, Frederico S. Freitas, Deborah Q. |
| description | Objectives
To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions.
Materials and methods
A human mandible had two sockets prepared—anterior and posterior regions—to accommodate a single-rooted tooth. Two CBCT units, Picasso Trio and OP300, were used. CBCT images of the tooth without metal post, and with silver-palladium, nickel-chromium, or cobalt-chromium posts (experimental groups) were individually acquired. Then, 8 lines of interest (LOIs) were determined around the root canal, in an axial reconstruction: 4 in orthogonal (buccal, lingual, mesial, and distal) directions, and 4 in oblique (mesiobuccal, distobuccal, mesiolingual, and distolingual) directions. The mean of gray values was measured for each LOI.
Results
For the OP300, in general, all experimental groups showed greater expression of hyperdense streaks in orthogonal LOIs and greater expression of hypodense streaks in oblique LOIs. For the Picasso Trio, for both mandibular regions, the buccal LOI showed greater expression of hypodense streaks; conversely, greater expression of hyperdense streaks was observed in the distal and distobuccal LOIs in the anterior region and in the mesiolingual LOI in the posterior region. The silver-palladium group showed significantly greater expression of beam hardening artefacts in the posterior region of the mandible, regardless of the CBCT unit (
p
< 0.05). The mandibular posterior region showed significantly lower gray values than the anterior region (
p
< 0.05).
Conclusion
The expression and direction of artefacts produced in the vicinity of metal posts vary according to the mandibular region, composition of the post, and CBCT unit.
Clinical relevance
The mapping of artefacts produced by metal posts reveals the root regions with greater expression of hypodense and hyperdense artefacts, which may contribute to recognizing regions more likely to mimic or hide root fracture lines. |
| doi_str_mv | 10.1007/s00784-020-03494-z |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2432430935</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2479576734</sourcerecordid><originalsourceid>FETCH-LOGICAL-c375t-1a4b81210729a24bbe9128a413abe47b3aa184f14cd5bd9be1d54d125ec0e2983</originalsourceid><addsrcrecordid>eNp9kUtLAzEUhYMotlb_gAsJuHEzmtc0M0spvqDiRtchmdxpp3QeJjNgC_53M52q4MJNEm6-c-7lHoTOKbmmhMgbH45ERISRiHCRimh7gMZU8GnEpaSHuzeLpmlCR-jE-xUhVEwlP0YjzqRknCVj9Pmsm6aoFrhdAoaPxoH3RV3hOscGdImX2lmoekC7FnKdtR43rrZdBhabDS6h1Wvc1L6v175ogzj8FBW2RZ6Dg6rFDhah6nvPvkvw6zXaZctTdJTrtYez_T1Bb_d3r7PHaP7y8DS7nUcZl3EbUS1MQhklkqWaCWMgpSzRgnJtQEjDtaaJyKnIbGxsaoDaWFjKYsgIsDThE3Q1-IbR3zvwrSoLn8F6rSuoO69YWJTgJOVxQC__oKu6c1WYLlAyjWXYoAgUG6jM1d47yFXjilK7jaJE9eGoIRwVwlG7cNQ2iC721p0pwf5IvtMIAB8AH76qBbjf3v_YfgG8g5wn</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2479576734</pqid></control><display><type>article</type><title>Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch</title><source>MEDLINE</source><source>Springer Nature - Complete Springer Journals</source><creator>Fontenele, Rocharles C. ; Farias Gomes, Amanda ; Rosado, Lucas P. Lopes ; Neves, Frederico S. ; Freitas, Deborah Q.</creator><creatorcontrib>Fontenele, Rocharles C. ; Farias Gomes, Amanda ; Rosado, Lucas P. Lopes ; Neves, Frederico S. ; Freitas, Deborah Q.</creatorcontrib><description>Objectives
To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions.
Materials and methods
A human mandible had two sockets prepared—anterior and posterior regions—to accommodate a single-rooted tooth. Two CBCT units, Picasso Trio and OP300, were used. CBCT images of the tooth without metal post, and with silver-palladium, nickel-chromium, or cobalt-chromium posts (experimental groups) were individually acquired. Then, 8 lines of interest (LOIs) were determined around the root canal, in an axial reconstruction: 4 in orthogonal (buccal, lingual, mesial, and distal) directions, and 4 in oblique (mesiobuccal, distobuccal, mesiolingual, and distolingual) directions. The mean of gray values was measured for each LOI.
Results
For the OP300, in general, all experimental groups showed greater expression of hyperdense streaks in orthogonal LOIs and greater expression of hypodense streaks in oblique LOIs. For the Picasso Trio, for both mandibular regions, the buccal LOI showed greater expression of hypodense streaks; conversely, greater expression of hyperdense streaks was observed in the distal and distobuccal LOIs in the anterior region and in the mesiolingual LOI in the posterior region. The silver-palladium group showed significantly greater expression of beam hardening artefacts in the posterior region of the mandible, regardless of the CBCT unit (
p
< 0.05). The mandibular posterior region showed significantly lower gray values than the anterior region (
p
< 0.05).
Conclusion
The expression and direction of artefacts produced in the vicinity of metal posts vary according to the mandibular region, composition of the post, and CBCT unit.
Clinical relevance
The mapping of artefacts produced by metal posts reveals the root regions with greater expression of hypodense and hyperdense artefacts, which may contribute to recognizing regions more likely to mimic or hide root fracture lines.</description><identifier>ISSN: 1432-6981</identifier><identifier>EISSN: 1436-3771</identifier><identifier>DOI: 10.1007/s00784-020-03494-z</identifier><identifier>PMID: 32772328</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Chromium ; Cobalt ; Cone-Beam Computed Tomography ; Dental Arch ; Dental Pulp Cavity ; Dentistry ; Humans ; Mandible ; Mandible - diagnostic imaging ; Mapping ; Medicine ; Nickel ; Original Article ; Palladium ; Root canals ; Silver ; Teeth ; Tooth Root</subject><ispartof>Clinical oral investigations, 2021-02, Vol.25 (2), p.571-579</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-1a4b81210729a24bbe9128a413abe47b3aa184f14cd5bd9be1d54d125ec0e2983</citedby><cites>FETCH-LOGICAL-c375t-1a4b81210729a24bbe9128a413abe47b3aa184f14cd5bd9be1d54d125ec0e2983</cites><orcidid>0000-0002-6426-9768</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00784-020-03494-z$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00784-020-03494-z$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32772328$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Fontenele, Rocharles C.</creatorcontrib><creatorcontrib>Farias Gomes, Amanda</creatorcontrib><creatorcontrib>Rosado, Lucas P. Lopes</creatorcontrib><creatorcontrib>Neves, Frederico S.</creatorcontrib><creatorcontrib>Freitas, Deborah Q.</creatorcontrib><title>Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch</title><title>Clinical oral investigations</title><addtitle>Clin Oral Invest</addtitle><addtitle>Clin Oral Investig</addtitle><description>Objectives
To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions.
Materials and methods
A human mandible had two sockets prepared—anterior and posterior regions—to accommodate a single-rooted tooth. Two CBCT units, Picasso Trio and OP300, were used. CBCT images of the tooth without metal post, and with silver-palladium, nickel-chromium, or cobalt-chromium posts (experimental groups) were individually acquired. Then, 8 lines of interest (LOIs) were determined around the root canal, in an axial reconstruction: 4 in orthogonal (buccal, lingual, mesial, and distal) directions, and 4 in oblique (mesiobuccal, distobuccal, mesiolingual, and distolingual) directions. The mean of gray values was measured for each LOI.
Results
For the OP300, in general, all experimental groups showed greater expression of hyperdense streaks in orthogonal LOIs and greater expression of hypodense streaks in oblique LOIs. For the Picasso Trio, for both mandibular regions, the buccal LOI showed greater expression of hypodense streaks; conversely, greater expression of hyperdense streaks was observed in the distal and distobuccal LOIs in the anterior region and in the mesiolingual LOI in the posterior region. The silver-palladium group showed significantly greater expression of beam hardening artefacts in the posterior region of the mandible, regardless of the CBCT unit (
p
< 0.05). The mandibular posterior region showed significantly lower gray values than the anterior region (
p
< 0.05).
Conclusion
The expression and direction of artefacts produced in the vicinity of metal posts vary according to the mandibular region, composition of the post, and CBCT unit.
Clinical relevance
The mapping of artefacts produced by metal posts reveals the root regions with greater expression of hypodense and hyperdense artefacts, which may contribute to recognizing regions more likely to mimic or hide root fracture lines.</description><subject>Chromium</subject><subject>Cobalt</subject><subject>Cone-Beam Computed Tomography</subject><subject>Dental Arch</subject><subject>Dental Pulp Cavity</subject><subject>Dentistry</subject><subject>Humans</subject><subject>Mandible</subject><subject>Mandible - diagnostic imaging</subject><subject>Mapping</subject><subject>Medicine</subject><subject>Nickel</subject><subject>Original Article</subject><subject>Palladium</subject><subject>Root canals</subject><subject>Silver</subject><subject>Teeth</subject><subject>Tooth Root</subject><issn>1432-6981</issn><issn>1436-3771</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kUtLAzEUhYMotlb_gAsJuHEzmtc0M0spvqDiRtchmdxpp3QeJjNgC_53M52q4MJNEm6-c-7lHoTOKbmmhMgbH45ERISRiHCRimh7gMZU8GnEpaSHuzeLpmlCR-jE-xUhVEwlP0YjzqRknCVj9Pmsm6aoFrhdAoaPxoH3RV3hOscGdImX2lmoekC7FnKdtR43rrZdBhabDS6h1Wvc1L6v175ogzj8FBW2RZ6Dg6rFDhah6nvPvkvw6zXaZctTdJTrtYez_T1Bb_d3r7PHaP7y8DS7nUcZl3EbUS1MQhklkqWaCWMgpSzRgnJtQEjDtaaJyKnIbGxsaoDaWFjKYsgIsDThE3Q1-IbR3zvwrSoLn8F6rSuoO69YWJTgJOVxQC__oKu6c1WYLlAyjWXYoAgUG6jM1d47yFXjilK7jaJE9eGoIRwVwlG7cNQ2iC721p0pwf5IvtMIAB8AH76qBbjf3v_YfgG8g5wn</recordid><startdate>20210201</startdate><enddate>20210201</enddate><creator>Fontenele, Rocharles C.</creator><creator>Farias Gomes, Amanda</creator><creator>Rosado, Lucas P. Lopes</creator><creator>Neves, Frederico S.</creator><creator>Freitas, Deborah Q.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</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>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-6426-9768</orcidid></search><sort><creationdate>20210201</creationdate><title>Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch</title><author>Fontenele, Rocharles C. ; Farias Gomes, Amanda ; Rosado, Lucas P. Lopes ; Neves, Frederico S. ; Freitas, Deborah Q.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-1a4b81210729a24bbe9128a413abe47b3aa184f14cd5bd9be1d54d125ec0e2983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Chromium</topic><topic>Cobalt</topic><topic>Cone-Beam Computed Tomography</topic><topic>Dental Arch</topic><topic>Dental Pulp Cavity</topic><topic>Dentistry</topic><topic>Humans</topic><topic>Mandible</topic><topic>Mandible - diagnostic imaging</topic><topic>Mapping</topic><topic>Medicine</topic><topic>Nickel</topic><topic>Original Article</topic><topic>Palladium</topic><topic>Root canals</topic><topic>Silver</topic><topic>Teeth</topic><topic>Tooth Root</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fontenele, Rocharles C.</creatorcontrib><creatorcontrib>Farias Gomes, Amanda</creatorcontrib><creatorcontrib>Rosado, Lucas P. Lopes</creatorcontrib><creatorcontrib>Neves, Frederico S.</creatorcontrib><creatorcontrib>Freitas, Deborah Q.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Clinical oral investigations</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fontenele, Rocharles C.</au><au>Farias Gomes, Amanda</au><au>Rosado, Lucas P. Lopes</au><au>Neves, Frederico S.</au><au>Freitas, Deborah Q.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch</atitle><jtitle>Clinical oral investigations</jtitle><stitle>Clin Oral Invest</stitle><addtitle>Clin Oral Investig</addtitle><date>2021-02-01</date><risdate>2021</risdate><volume>25</volume><issue>2</issue><spage>571</spage><epage>579</epage><pages>571-579</pages><issn>1432-6981</issn><eissn>1436-3771</eissn><abstract>Objectives
To objectively assess the expression and direction of artefacts in the vicinity of metal posts positioned in different mandibular regions.
Materials and methods
A human mandible had two sockets prepared—anterior and posterior regions—to accommodate a single-rooted tooth. Two CBCT units, Picasso Trio and OP300, were used. CBCT images of the tooth without metal post, and with silver-palladium, nickel-chromium, or cobalt-chromium posts (experimental groups) were individually acquired. Then, 8 lines of interest (LOIs) were determined around the root canal, in an axial reconstruction: 4 in orthogonal (buccal, lingual, mesial, and distal) directions, and 4 in oblique (mesiobuccal, distobuccal, mesiolingual, and distolingual) directions. The mean of gray values was measured for each LOI.
Results
For the OP300, in general, all experimental groups showed greater expression of hyperdense streaks in orthogonal LOIs and greater expression of hypodense streaks in oblique LOIs. For the Picasso Trio, for both mandibular regions, the buccal LOI showed greater expression of hypodense streaks; conversely, greater expression of hyperdense streaks was observed in the distal and distobuccal LOIs in the anterior region and in the mesiolingual LOI in the posterior region. The silver-palladium group showed significantly greater expression of beam hardening artefacts in the posterior region of the mandible, regardless of the CBCT unit (
p
< 0.05). The mandibular posterior region showed significantly lower gray values than the anterior region (
p
< 0.05).
Conclusion
The expression and direction of artefacts produced in the vicinity of metal posts vary according to the mandibular region, composition of the post, and CBCT unit.
Clinical relevance
The mapping of artefacts produced by metal posts reveals the root regions with greater expression of hypodense and hyperdense artefacts, which may contribute to recognizing regions more likely to mimic or hide root fracture lines.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>32772328</pmid><doi>10.1007/s00784-020-03494-z</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-6426-9768</orcidid></addata></record> |
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| ispartof | Clinical oral investigations, 2021-02, Vol.25 (2), p.571-579 |
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| language | eng |
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| source | MEDLINE; Springer Nature - Complete Springer Journals |
| subjects | Chromium Cobalt Cone-Beam Computed Tomography Dental Arch Dental Pulp Cavity Dentistry Humans Mandible Mandible - diagnostic imaging Mapping Medicine Nickel Original Article Palladium Root canals Silver Teeth Tooth Root |
| title | Mapping the expression of beam hardening artefacts produced by metal posts positioned in different regions of the dental arch |
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