EdenteV2, Istex, Corpus, bibRecord, 002834

Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants

Identifieur interne : 002834 ( Istex/Corpus ); précédent : 002833; suivant : 002835

Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants

Auteurs : Lydia Vazquez ; Yassin Nizam Al Din ; Urs Christoph Belser ; Christophe Combescure ; Jean-Pierre Bernard

Source :

Clinical Oral Implants Research [ 0905-7161 ] ; 2011-12.

RBID : ISTEX:51E75B25BE2112872B59C6397564DD162B9E0D6A

English descriptors

Abstract

Objectives: Panoramic radiographs allow evaluation of the available bone height for implant treatment planning while imparting a low radiation dose. As panoramic radiography produces image distortion, reference objects are required to determine the exact magnification. This study aims to estimate a panoramic unit's vertical magnification factor (MF) by measuring the length of dental implants used as radiopaque reference objects on postoperative panoramic radiographs. We compared our findings to the vertical MF listed by the panoramic unit manufacturer, and studied the reproducibility and accuracy of our measuring method by analyzing the inter‐ and intraobserver agreements.

Url:

https://api.istex.fr/document/51E75B25BE2112872B59C6397564DD162B9E0D6A/fulltext/pdf

DOI: 10.1111/j.1600-0501.2010.02131.x

Links to Exploration step

ISTEX:51E75B25BE2112872B59C6397564DD162B9E0D6A

Le document en format XML

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<front><div type="abstract">Objectives: Panoramic radiographs allow evaluation of the available bone height for implant treatment planning while imparting a low radiation dose. As panoramic radiography produces image distortion, reference objects are required to determine the exact magnification. This study aims to estimate a panoramic unit's vertical magnification factor (MF) by measuring the length of dental implants used as radiopaque reference objects on postoperative panoramic radiographs. We compared our findings to the vertical MF listed by the panoramic unit manufacturer, and studied the reproducibility and accuracy of our measuring method by analyzing the inter‐ and intraobserver agreements.</div>
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<profileDesc><abstract xml:lang="en" style="main"><head>Abstract</head>
<p><hi rend="bold">Objectives: </hi>
 Panoramic radiographs allow evaluation of the available bone height for implant treatment planning while imparting a low radiation dose. As panoramic radiography produces image distortion, reference objects are required to determine the exact magnification. This study aims to estimate a panoramic unit's vertical magnification factor (MF) by measuring the length of dental implants used as radiopaque reference objects on postoperative panoramic radiographs. We compared our findings to the vertical MF listed by the panoramic unit manufacturer, and studied the reproducibility and accuracy of our measuring method by analyzing the inter‐ and intraobserver agreements.</p>
<p><hi rend="bold">Material and methods: </hi>
 Using a digital calliper, we measured the length of 32 implants on 17 postoperative panoramic radiographs taken with a Scanora® unit. The implants were 10mm‐long standard Straumann® implants placed in the posterior segments of mandibles. The MF was calculated by dividing the implant's radiological length by the implant's real length.</p>
<p><hi rend="bold">Results: </hi>
 The mean calculated vertical MF was 1.27 ± 0.01 (1.245–1.295) and was lower than the manufacturer's MF (1.3). The vertical MF was 1.28 ± 0.01 in the premolar and 1.27 ± 0.01 in the molar regions. There was an excellent intraobserver reliability (0.96 for observer 1; 0.93 for observer 2) and a good interobserver reliability (0.85 at measurement session 1; 0.8 at measurement session 2)</p>
<p><hi rend="bold">Conclusions: </hi>
 The observed reliability of the MF confirms that a panoramic radiograph can be used for preoperative implant length evaluation in the posterior mandibular segments. MF stability should be verified with other panoramic units. In clinical practice, using the implant length as a reference object on postoperative panoramic radiographs is a simple and effective evaluation method to estimate a panoramic unit's MF.</p>
<p><hi rend="bold">To cite this article:</hi>
           Vazquez L, Nizam Al Din Y, Belser UC, Combescure C, Bernard J‐P. Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants. <hi rend="italic">Clin. Oral Impl. Res</hi>
. <hi rend="bold">xx</hi>
, 2011; 000–000. doi: 10.1111/j.1600‐0501.2010.02131.x</p>
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<i>Lydi Vazquez</i>
 Department of Oral Surgery, Oral Medicine, Oral and Maxillofacial Radiology, School of Dental Medicine University of Geneva Rue Barthelemy‐Menn 19 1205 Geneva Switzerland Tel.: +41 22 379 40 03 Fax: +41 22 379 40 82 e‐mail: <email normalForm="lydia.vazquez@unige.ch">lydia.vazquez@unige.ch</email>
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<titleGroup><title type="main">Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants</title>
<title type="shortAuthors">Vazquez et al.</title>
<title type="short">Reliability of the vertical magnification factor</title>
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<creator creatorRole="author" xml:id="cr5" affiliationRef="#a1"><personName><givenNames>Jean‐Pierre</givenNames>
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<p><b>Objectives: </b>
 Panoramic radiographs allow evaluation of the available bone height for implant treatment planning while imparting a low radiation dose. As panoramic radiography produces image distortion, reference objects are required to determine the exact magnification. This study aims to estimate a panoramic unit's vertical magnification factor (MF) by measuring the length of dental implants used as radiopaque reference objects on postoperative panoramic radiographs. We compared our findings to the vertical MF listed by the panoramic unit manufacturer, and studied the reproducibility and accuracy of our measuring method by analyzing the inter‐ and intraobserver agreements.</p>
<p><b>Material and methods: </b>
 Using a digital calliper, we measured the length of 32 implants on 17 postoperative panoramic radiographs taken with a Scanora® unit. The implants were 10mm‐long standard Straumann® implants placed in the posterior segments of mandibles. The MF was calculated by dividing the implant's radiological length by the implant's real length.</p>
<p><b>Results: </b>
 The mean calculated vertical MF was 1.27 ± 0.01 (1.245–1.295) and was lower than the manufacturer's MF (1.3). The vertical MF was 1.28 ± 0.01 in the premolar and 1.27 ± 0.01 in the molar regions. There was an excellent intraobserver reliability (0.96 for observer 1; 0.93 for observer 2) and a good interobserver reliability (0.85 at measurement session 1; 0.8 at measurement session 2)</p>
<p><b>Conclusions: </b>
 The observed reliability of the MF confirms that a panoramic radiograph can be used for preoperative implant length evaluation in the posterior mandibular segments. MF stability should be verified with other panoramic units. In clinical practice, using the implant length as a reference object on postoperative panoramic radiographs is a simple and effective evaluation method to estimate a panoramic unit's MF.</p>
<p><b>To cite this article:</b>
           Vazquez L, Nizam Al Din Y, Belser UC, Combescure C, Bernard J‐P. Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants. <i>Clin. Oral Impl. Res</i>
. <b>xx</b>
, 2011; 000–000. doi: 10.1111/j.1600‐0501.2010.02131.x</p>
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<abstract>Objectives: Panoramic radiographs allow evaluation of the available bone height for implant treatment planning while imparting a low radiation dose. As panoramic radiography produces image distortion, reference objects are required to determine the exact magnification. This study aims to estimate a panoramic unit's vertical magnification factor (MF) by measuring the length of dental implants used as radiopaque reference objects on postoperative panoramic radiographs. We compared our findings to the vertical MF listed by the panoramic unit manufacturer, and studied the reproducibility and accuracy of our measuring method by analyzing the inter‐ and intraobserver agreements.</abstract>
<abstract>Material and methods: Using a digital calliper, we measured the length of 32 implants on 17 postoperative panoramic radiographs taken with a Scanora® unit. The implants were 10mm‐long standard Straumann® implants placed in the posterior segments of mandibles. The MF was calculated by dividing the implant's radiological length by the implant's real length.</abstract>
<abstract>Results: The mean calculated vertical MF was 1.27 ± 0.01 (1.245–1.295) and was lower than the manufacturer's MF (1.3). The vertical MF was 1.28 ± 0.01 in the premolar and 1.27 ± 0.01 in the molar regions. There was an excellent intraobserver reliability (0.96 for observer 1; 0.93 for observer 2) and a good interobserver reliability (0.85 at measurement session 1; 0.8 at measurement session 2)</abstract>
<abstract>Conclusions: The observed reliability of the MF confirms that a panoramic radiograph can be used for preoperative implant length evaluation in the posterior mandibular segments. MF stability should be verified with other panoramic units. In clinical practice, using the implant length as a reference object on postoperative panoramic radiographs is a simple and effective evaluation method to estimate a panoramic unit's MF.</abstract>
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Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants

Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants

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