Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible in vivo
Identifieur interne : 003F50 ( Istex/Corpus ); précédent : 003F49; suivant : 003F51Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible in vivo
Auteurs : Jan Willem Verhoeven ; Jan Ruijter ; Marco Stephan Cune ; Maarten TerlouSource :
- Clinical Oral Implants Research [ 0905-7161 ] ; 2000-10.
English descriptors
- KwdEn :
- Additional correction, Algorithm, Aluminium, Aluminium reference wedge, Aluminium transformation, Aluminium wedge, Anterior mandible, Atrophic mandible, Bone density, Cephalometric, Cephalometric radiographs, Clinical periodontology, Correction, Cune, Deliberate change, Densitometric, Densitometric measurements, Digital subtraction radiography, Eld, Endosseous implants, Extraoral, Group patients, Height measurements, Horizontal angle, Image acquisition, Image processing, Implant, Implant region, Implantology, Implants research, Intraoral, Intraoral periapical, Jeffcoat, Jeffcoat reddy, Lateral cephalometric radiographs, Light source, Mandible, Mandibular, Mandibular bone, Mandibular segment, Measurement error, Measurement results, Measurement series, Measurements series, Median, Oblique, Olcr, Olcrs, Optimal projection, Periapical, Periodontal research, Present study, Quantitative densitometric measurements, Radiograph, Radiographic, Radiography, Relative difference, Relative effect, Repositioning, Soft tissue correction, Soft tissue correction algorithm, Soft tissue projection, Soft tissues, Square measurement, Utrecht, Utrecht university, Verhoeven, Verhoeven cune, Webber.
- Teeft :
- Additional correction, Algorithm, Aluminium, Aluminium reference wedge, Aluminium transformation, Aluminium wedge, Anterior mandible, Atrophic mandible, Bone density, Cephalometric, Cephalometric radiographs, Clinical periodontology, Correction, Cune, Deliberate change, Densitometric, Densitometric measurements, Digital subtraction radiography, Eld, Endosseous implants, Extraoral, Group patients, Height measurements, Horizontal angle, Image acquisition, Image processing, Implant, Implant region, Implantology, Implants research, Intraoral, Intraoral periapical, Jeffcoat, Jeffcoat reddy, Lateral cephalometric radiographs, Light source, Mandible, Mandibular, Mandibular bone, Mandibular segment, Measurement error, Measurement results, Measurement series, Measurements series, Median, Oblique, Olcr, Olcrs, Optimal projection, Periapical, Periodontal research, Present study, Quantitative densitometric measurements, Radiograph, Radiographic, Radiography, Relative difference, Relative effect, Repositioning, Soft tissue correction, Soft tissue correction algorithm, Soft tissue projection, Soft tissues, Square measurement, Utrecht, Utrecht university, Verhoeven, Verhoeven cune, Webber.
Abstract
In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained. In vitro, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs in vivo. In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.
Url:
DOI: 10.1034/j.1600-0501.2000.011005476.x
Links to Exploration step
ISTEX:7FEF7F63932621C810C448DBF76F0F36A18968A8Le document en format XML
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transformation</term><term>Aluminium wedge</term><term>Anterior mandible</term><term>Atrophic mandible</term><term>Bone density</term><term>Cephalometric</term><term>Cephalometric radiographs</term><term>Clinical periodontology</term><term>Correction</term><term>Cune</term><term>Deliberate change</term><term>Densitometric</term><term>Densitometric measurements</term><term>Digital subtraction radiography</term><term>Eld</term><term>Endosseous implants</term><term>Extraoral</term><term>Group patients</term><term>Height measurements</term><term>Horizontal angle</term><term>Image acquisition</term><term>Image processing</term><term>Implant</term><term>Implant region</term><term>Implantology</term><term>Implants research</term><term>Intraoral</term><term>Intraoral periapical</term><term>Jeffcoat</term><term>Jeffcoat reddy</term><term>Lateral cephalometric radiographs</term><term>Light source</term><term>Mandible</term><term>Mandibular</term><term>Mandibular bone</term><term>Mandibular segment</term><term>Measurement error</term><term>Measurement results</term><term>Measurement series</term><term>Measurements series</term><term>Median</term><term>Oblique</term><term>Olcr</term><term>Olcrs</term><term>Optimal projection</term><term>Periapical</term><term>Periodontal research</term><term>Present study</term><term>Quantitative densitometric measurements</term><term>Radiograph</term><term>Radiographic</term><term>Radiography</term><term>Relative difference</term><term>Relative effect</term><term>Repositioning</term><term>Soft tissue correction</term><term>Soft tissue correction algorithm</term><term>Soft tissue projection</term><term>Soft tissues</term><term>Square measurement</term><term>Utrecht</term><term>Utrecht university</term><term>Verhoeven</term><term>Verhoeven cune</term><term>Webber</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Additional correction</term><term>Algorithm</term><term>Aluminium</term><term>Aluminium reference wedge</term><term>Aluminium transformation</term><term>Aluminium wedge</term><term>Anterior mandible</term><term>Atrophic mandible</term><term>Bone density</term><term>Cephalometric</term><term>Cephalometric radiographs</term><term>Clinical periodontology</term><term>Correction</term><term>Cune</term><term>Deliberate change</term><term>Densitometric</term><term>Densitometric measurements</term><term>Digital subtraction radiography</term><term>Eld</term><term>Endosseous implants</term><term>Extraoral</term><term>Group patients</term><term>Height measurements</term><term>Horizontal angle</term><term>Image acquisition</term><term>Image processing</term><term>Implant</term><term>Implant region</term><term>Implantology</term><term>Implants research</term><term>Intraoral</term><term>Intraoral periapical</term><term>Jeffcoat</term><term>Jeffcoat reddy</term><term>Lateral cephalometric radiographs</term><term>Light source</term><term>Mandible</term><term>Mandibular</term><term>Mandibular bone</term><term>Mandibular segment</term><term>Measurement error</term><term>Measurement results</term><term>Measurement series</term><term>Measurements series</term><term>Median</term><term>Oblique</term><term>Olcr</term><term>Olcrs</term><term>Optimal projection</term><term>Periapical</term><term>Periodontal research</term><term>Present study</term><term>Quantitative densitometric measurements</term><term>Radiograph</term><term>Radiographic</term><term>Radiography</term><term>Relative difference</term><term>Relative effect</term><term>Repositioning</term><term>Soft tissue correction</term><term>Soft tissue correction algorithm</term><term>Soft tissue projection</term><term>Soft tissues</term><term>Square measurement</term><term>Utrecht</term><term>Utrecht university</term><term>Verhoeven</term><term>Verhoeven cune</term><term>Webber</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained. In vitro, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs in vivo. In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>radiograph</json:string><json:string>mandible</json:string><json:string>olcrs</json:string><json:string>aluminium</json:string><json:string>verhoeven</json:string><json:string>densitometric</json:string><json:string>implant</json:string><json:string>intraoral</json:string><json:string>radiographic</json:string><json:string>olcr</json:string><json:string>mandibular</json:string><json:string>densitometric measurements</json:string><json:string>cune</json:string><json:string>cephalometric</json:string><json:string>image acquisition</json:string><json:string>soft tissue correction</json:string><json:string>utrecht</json:string><json:string>aluminium wedge</json:string><json:string>implantology</json:string><json:string>eld</json:string><json:string>extraoral</json:string><json:string>jeffcoat</json:string><json:string>soft tissues</json:string><json:string>repositioning</json:string><json:string>periapical</json:string><json:string>verhoeven cune</json:string><json:string>cephalometric radiographs</json:string><json:string>measurement error</json:string><json:string>soft tissue projection</json:string><json:string>radiography</json:string><json:string>mandibular bone</json:string><json:string>utrecht university</json:string><json:string>aluminium transformation</json:string><json:string>relative difference</json:string><json:string>measurement results</json:string><json:string>median</json:string><json:string>correction</json:string><json:string>periodontal research</json:string><json:string>measurements series</json:string><json:string>soft tissue correction algorithm</json:string><json:string>measurement series</json:string><json:string>present study</json:string><json:string>digital subtraction radiography</json:string><json:string>horizontal angle</json:string><json:string>anterior mandible</json:string><json:string>light source</json:string><json:string>atrophic mandible</json:string><json:string>implant region</json:string><json:string>lateral cephalometric radiographs</json:string><json:string>webber</json:string><json:string>algorithm</json:string><json:string>oblique</json:string><json:string>aluminium reference wedge</json:string><json:string>height measurements</json:string><json:string>endosseous implants</json:string><json:string>intraoral periapical</json:string><json:string>jeffcoat reddy</json:string><json:string>additional correction</json:string><json:string>mandibular segment</json:string><json:string>square measurement</json:string><json:string>bone density</json:string><json:string>relative effect</json:string><json:string>deliberate change</json:string><json:string>optimal projection</json:string><json:string>group patients</json:string><json:string>quantitative densitometric measurements</json:string><json:string>clinical periodontology</json:string><json:string>implants research</json:string><json:string>image processing</json:string></teeft></keywords><author><json:item><name>Jan Willem Verhoeven</name><affiliations><json:string>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</json:string></affiliations></json:item><json:item><name>Jan Ruijter</name><affiliations><json:string>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</json:string><json:string>currently: Department of Anatomy and Embryology, Academic Medical Centre, Amsterdam, The Netherlands</json:string></affiliations></json:item><json:item><name>Marco Stephan Cune</name><affiliations><json:string>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</json:string></affiliations></json:item><json:item><name>Maarten Terlou</name><affiliations><json:string>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>radiography</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>dental implants</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>densitometry</value></json:item></subject><articleId><json:string>clr9o537</json:string></articleId><arkIstex>ark:/67375/WNG-VXXS36ZS-X</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained. In vitro, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs in vivo. In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.</abstract><qualityIndicators><score>10</score><pdfWordCount>5636</pdfWordCount><pdfCharCount>35831</pdfCharCount><pdfVersion>1.2</pdfVersion><pdfPageCount>11</pdfPageCount><pdfPageSize>595 x 794 pts</pdfPageSize><refBibsNative>false</refBibsNative><abstractWordCount>304</abstractWordCount><abstractCharCount>1983</abstractCharCount><keywordCount>3</keywordCount></qualityIndicators><title>Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible in vivo</title><pmid><json:string>11168240</json:string></pmid><genre><json:string>article</json:string></genre><host><title>Clinical Oral Implants Research</title><language><json:string>unknown</json:string></language><doi><json:string>10.1111/(ISSN)1600-0501</json:string></doi><issn><json:string>0905-7161</json:string></issn><eissn><json:string>1600-0501</json:string></eissn><publisherId><json:string>CLR</json:string></publisherId><volume>11</volume><issue>5</issue><pages><first>476</first><last>486</last><total>11</total></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>2000</json:string></date><geogName></geogName><orgName><json:string>Netherlands Key</json:string><json:string>University of Utrecht</json:string><json:string>Utrecht University</json:string><json:string>Netherlands Tel</json:string><json:string>Department of Image Processing and Design</json:string><json:string>Department of Anatomy and Embryology</json:string><json:string>Department of Oral</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>Maarten Terlou</json:string><json:string>J. W. Verhoeven</json:string><json:string>Variance</json:string><json:string>J.A.M. van der Linden</json:string><json:string>Marco Stephan</json:string><json:string>Jan Ruijter</json:string></persName><placeName><json:string>Utrecht</json:string><json:string>Germany</json:string><json:string>Eindhoven</json:string><json:string>Amsterdam</json:string><json:string>Netherlands</json:string></placeName><ref_url></ref_url><ref_bibl><json:string>Verhoeven et al. 1997</json:string><json:string>Brägger et al. 1991</json:string><json:string>Verhoeven et al. 1997, 1998</json:string><json:string>Verhoeven et al.</json:string><json:string>Rüttiman & Webber 1987</json:string><json:string>Steen 1984</json:string><json:string>Jeffcoat & Reddy 1993</json:string><json:string>Fourmousis 1994a</json:string><json:string>van Rossen 1991</json:string><json:string>Fourmousis et al. 1994a, 1994b</json:string><json:string>Omnell 1957</json:string><json:string>Webber et al. 1990</json:string><json:string>Batenburg et al. 1997</json:string><json:string>Trouerbach 1982</json:string><json:string>Jeffcoat 1992</json:string><json:string>Meijer, Steen & Bosman 1993</json:string><json:string>Verhoeven & Cune 2000</json:string><json:string>Araki et al. 1992</json:string><json:string>Jacobs & Van Steenberghe 1998</json:string><json:string>Wyatt et al. 1995</json:string><json:string>Meijer (1996)</json:string><json:string>Verhoeven et al. 1998</json:string><json:string>Benn 1990</json:string><json:string>Vos et al. 1986</json:string><json:string>Brägger 1994</json:string><json:string>Janssen 1987</json:string><json:string>Brägger 1988</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/WNG-VXXS36ZS-X</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - engineering, biomedical</json:string><json:string>2 - dentistry, oral surgery & medicine</json:string></wos><scienceMetrix><json:string>1 - health sciences</json:string><json:string>2 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measurements of the mandible<hi rend="italic">in vivo</hi></title><respStmt><resp>Références bibliographiques récupérées via GROBID</resp><name resp="ISTEX-API">ISTEX-API (INIST-CNRS)</name></respStmt></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Munksgaard International Publishers</publisher><pubPlace>Copenhagen</pubPlace><date type="published" when="2000-10"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible<hi rend="italic">in vivo</hi></title><title level="a" type="short">Oblique lateral cephalometric radiographs of the mandible in implantology</title><author xml:id="author-0000"><persName><forename type="first">Jan Willem</forename><surname>Verhoeven</surname></persName><affiliation>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Jan</forename><surname>Ruijter</surname></persName><affiliation>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</affiliation><affiliation>currently: Department of Anatomy and Embryology, Academic Medical Centre, Amsterdam, The Netherlands<address><country key="NL"></country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Marco Stephan</forename><surname>Cune</surname></persName><affiliation>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</affiliation></author><author xml:id="author-0003"><persName><forename type="first">Maarten</forename><surname>Terlou</surname></persName><affiliation>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</affiliation></author><idno type="istex">7FEF7F63932621C810C448DBF76F0F36A18968A8</idno><idno type="ark">ark:/67375/WNG-VXXS36ZS-X</idno><idno type="DOI">10.1034/j.1600-0501.2000.011005476.x</idno><idno type="supplier">clr9o537</idno><idno type="unit">CLR11005476</idno><idno type="toTypesetVersion">file:CLR.CLR11005476.pdf</idno></analytic><monogr><title level="j" type="main">Clinical Oral Implants Research</title><title level="j" type="alt">CLINICAL ORAL IMPLANTS RESEARCH</title><idno type="pISSN">0905-7161</idno><idno type="eISSN">1600-0501</idno><idno type="book-DOI">10.1111/(ISSN)1600-0501</idno><idno type="book-part-DOI">10.1111/clr.2000.11.issue-5</idno><idno type="product">CLR</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">11</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="476">476</biblScope><biblScope unit="page" to="486">486</biblScope><biblScope unit="page-count">11</biblScope><publisher>Munksgaard International Publishers</publisher><pubPlace>Copenhagen</pubPlace><date type="published" when="2000-10"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><p><hi rend="italic">In vitro</hi><hi rend="italic">in vivo.</hi><:t>In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained.</:t><:t>, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs</:t><:t>In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.</:t></p></abstract><textClass><keywords xml:lang="en"><term xml:id="k1">radiography</term><term xml:id="k2">dental implants</term><term xml:id="k3">densitometry</term></keywords><keywords rend="tocHeading1"><term>Original Article</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc><revisionDesc><change>undefined</change><change>[object Object]</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/7FEF7F63932621C810C448DBF76F0F36A18968A8/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley component found"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Munksgaard International Publishers</publisherName><publisherLoc>Copenhagen</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1600-0501</doi><issn type="print">0905-7161</issn><issn type="electronic">1600-0501</issn><idGroup><id type="product" value="CLR"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="CLINICAL ORAL IMPLANTS RESEARCH">Clinical Oral Implants Research</title></titleGroup></publicationMeta><publicationMeta level="part" position="10005"><doi origin="wiley">10.1111/clr.2000.11.issue-5</doi><numberingGroup><numbering type="journalVolume" number="11">11</numbering><numbering type="journalIssue" number="5">5</numbering></numberingGroup><coverDate startDate="2000-10">October 2000</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0047600" status="forIssue"><doi origin="wiley">10.1034/j.1600-0501.2000.011005476.x</doi><idGroup><id type="supplier" value="clr9o537"></id><id type="unit" value="CLR11005476"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="tocHeading1">Original Article</title></titleGroup><eventGroup><event type="firstOnline" date="2001-12-25"></event><event type="publishedOnlineFinalForm" date="2001-12-25"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:Header result:Header" date="2010-03-15"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-12"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-17"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="476">476</numbering><numbering type="pageLast" number="486">486</numbering></numberingGroup><correspondenceTo>J. W. Verhoeven, Utrecht University, Department of Oral & Maxillofacial Surgery, Prosthodontics and Special Dental Care, PO Box 80.037, 3508 TA Utrecht, The Netherlands
Tel.: +31 302533540
Fax: +31 302535537
</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:CLR.CLR11005476.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Accepted for publication 6 September 1999</unparsedEditorialHistory><countGroup><count type="figureTotal" number="0"></count><count type="tableTotal" number="0"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="0"></count><count type="wordTotal" number="6737"></count><count type="linksPubMed" number="0"></count><count type="linksCrossRef" number="0"></count></countGroup><titleGroup><title type="main">Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible <i>in vivo</i></title><title type="shortAuthors">Verhoeven et al.</title><title type="short">Oblique lateral cephalometric radiographs of the mandible in implantology</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>Jan Willem</givenNames><familyName>Verhoeven</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2 #a3"><personName><givenNames>Jan</givenNames><familyName>Ruijter</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>Marco Stephan</givenNames><familyName>Cune</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a2"><personName><givenNames>Maarten</givenNames><familyName>Terlou</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</unparsedAffiliation></affiliation><affiliation xml:id="a2"><unparsedAffiliation>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="NL"><unparsedAffiliation>currently: Department of Anatomy and Embryology, Academic Medical Centre, Amsterdam, The Netherlands</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">radiography</keyword><keyword xml:id="k2">dental implants</keyword><keyword xml:id="k3">densitometry</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained. <i>In vitro</i>, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs <i>in vivo.</i> In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible in vivo</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Oblique lateral cephalometric radiographs of the mandible in implantology</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and reproducibility of the technique in quantitative densitometric measurements of the mandible in vivo</title></titleInfo><name type="personal"><namePart type="given">Jan Willem</namePart><namePart type="family">Verhoeven</namePart><affiliation>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jan</namePart><namePart type="family">Ruijter</namePart><affiliation>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</affiliation><affiliation>currently: Department of Anatomy and Embryology, Academic Medical Centre, Amsterdam, The Netherlands</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Marco Stephan</namePart><namePart type="family">Cune</namePart><affiliation>Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, University of Utrecht;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Maarten</namePart><namePart type="family">Terlou</namePart><affiliation>Department of Image Processing and Design, Faculty of Biology, University of Utrecht;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Munksgaard International Publishers</publisher><place><placeTerm type="text">Copenhagen</placeTerm></place><dateIssued encoding="w3cdtf">2000-10</dateIssued><edition>Accepted for publication 6 September 1999</edition><copyrightDate encoding="w3cdtf">2000</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">0</extent><extent unit="tables">0</extent><extent unit="formulas">0</extent><extent unit="references">0</extent><extent unit="linksCrossRef">0</extent><extent unit="words">6737</extent></physicalDescription><abstract lang="en">In the literature intraoral periapical radiographs are commonly used for densitometric measurements of the mandible with implants. These films give detailed information of the implant and the surrounding bone. However, in extreme mandibular atrophy it can be difficult to obtain intraoral radiographs of adequate diagnostic quality. Extraoral Oblique Lateral Cephalometric Radiographs (OLCRs) can then be the alternative: reproducible images of large parts of the mandible can be obtained. In vitro, the results of densitometry using periapical films and OLCRs were shown to be similar. The present study aims to determine the measurement error of densitometry with OLCRs in vivo. In 16 patients (group I) with atrophic mandible and implants, duplicate OLCRs of one side of the jaw were obtained. The error of measurement for the densitometric measurements of the mandibular bone was 5.5%. The use of a specially developed correction program to compensate for undesired variations in the projection of the soft tissues of the face (tongue, lips, cheek and neck) on the radiographs resulted in a 40% reduction of that measurement error to 3.5%. This remaining error is mainly brought about by an imperfect repositioning of the patient when the duplicate OLCRs are obtained. The error caused by the image acquisition, processing and measurement is less than 1%. Deliberate variation up to 7.5 degrees of the horizontal angle wherein the OLCRs are made, results in a large error of measurement of 13.5% (group II: 17 patients). To reduce this variation the additional soft tissue correction program is unsuitable. It is concluded from this study that the described radiographic and image analysis technique is a promising tool for prospective densitometric studies of the mandible with or without implants. Especially in mandibles with bone grafts and implants, substantial changes in the graft can occur. The described technique may be particularly valuable in analyzing these changes.</abstract><subject lang="en"><genre>keywords</genre><topic>radiography</topic><topic>dental implants</topic><topic>densitometry</topic></subject><relatedItem type="host"><titleInfo><title>Clinical Oral Implants Research</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><identifier type="ISSN">0905-7161</identifier><identifier type="eISSN">1600-0501</identifier><identifier type="DOI">10.1111/(ISSN)1600-0501</identifier><identifier type="PublisherID">CLR</identifier><part><date>2000</date><detail type="volume"><caption>vol.</caption><number>11</number></detail><detail type="issue"><caption>no.</caption><number>5</number></detail><extent unit="pages"><start>476</start><end>486</end><total>11</total></extent></part></relatedItem><identifier type="istex">7FEF7F63932621C810C448DBF76F0F36A18968A8</identifier><identifier type="ark">ark:/67375/WNG-VXXS36ZS-X</identifier><identifier type="DOI">10.1034/j.1600-0501.2000.011005476.x</identifier><identifier type="ArticleID">clr9o537</identifier><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource><recordOrigin>Munksgaard International Publishers</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/7FEF7F63932621C810C448DBF76F0F36A18968A8/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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