EdenteV2, Main, Exploration, bibRecord, 002682

Accuracy of vertical height measurements on direct digital panoramic radiographs using posterior mandibular implants and metal balls as reference objects

Identifieur interne : 002682 ( Main/Exploration ); précédent : 002681; suivant : 002683

Accuracy of vertical height measurements on direct digital panoramic radiographs using posterior mandibular implants and metal balls as reference objects

Auteurs : L. Vazquez [Suisse] ; Y. Nizamaldin [Suisse] ; C. Combescure [Suisse] ; R. Nedir [Suisse] ; M. Bischof [Suisse] ; Dm Dohan Ehrenfest [Suisse] ; J-P Carrel [Suisse] ; Uc Belser [Suisse]

Source :

Dentomaxillofacial Radiology [ 0250-832X ] ; 2013.

RBID : PMC:3699017

Descripteurs français

English descriptors

KwdEn :
- Adult, Aged, Aged, 80 and over, Alloys (chemistry), Cephalometry (standards), Cephalometry (statistics & numerical data), Contrast Media, Dental Arch (diagnostic imaging), Dental Implants, Dental Prosthesis Design, Female, Fiducial Markers (classification), Humans, Jaw, Edentulous, Partially (diagnostic imaging), Male, Mandible (diagnostic imaging), Middle Aged, Observer Variation, Patient Care Planning, Radiographic Image Enhancement (standards), Radiography, Dental, Digital (standards), Radiography, Dental, Digital (statistics & numerical data), Radiography, Panoramic (standards), Radiography, Panoramic (statistics & numerical data), Reference Standards, Reproducibility of Results, Software.
MESH :
- chemical , chemistry : Alloys.
- classification : Fiducial Markers.
- diagnostic imaging : Dental Arch, Jaw, Edentulous, Partially, Mandible.
- standards : Cephalometry, Radiographic Image Enhancement, Radiography, Dental, Digital, Radiography, Panoramic.
- statistics & numerical data : Cephalometry, Radiography, Dental, Digital, Radiography, Panoramic.
- Adult, Aged, Aged, 80 and over, Contrast Media, Dental Implants, Dental Prosthesis Design, Female, Humans, Male, Middle Aged, Observer Variation, Patient Care Planning, Reference Standards, Reproducibility of Results, Software.

Abstract

Objectives:

Conventional panoramic radiography, a widely used radiographic examination tool in implant treatment planning, allows evaluation of the available bone height before inserting posterior mandibular implants. Image distortion and vertical magnification due to projection geometry is well described for rotational panoramic radiographs. To assess the accuracy of vertical height measurements on direct digital panoramic radiographs, implants and metal balls positioned in the posterior mandible were used as radio-opaque reference objects. The reproducibility of the measuring method was assessed by the inter- and intraobserver agreements.

Methods:

Direct digital panoramic radiographs, performed using a Kodak 8000C (Eastman Kodak Company, Rochester, NY), of 17 partially edentulous patients (10 females, 7 males, mean age 65 years) were selected from an X-ray database gathered during routine clinical evaluation of implant sites. Proprietary software and a mouse-driven calliper were used to measure the radiological length of 25 implants and 18 metal reference balls, positioned in mandibular posterior segments. The distortion ratio (DR) was calculated by dividing the radiological implant length by the implant's real length and the radiological ball height by the ball's real height.

Results:

Mean vertical DR was 0.99 for implants and 0.97 for balls, and was unrelated to mandibular sites, side, age, gender or observer. Inter- and intraobserver agreements were acceptable for both reference objects.

Conclusions:

Vertical measurements had acceptable accuracy and reproducibility when a software-based calibrated measurement tool was used, confirming that digital panoramic radiography can be reliably utilized to determine the pre-operative implant length in premolar and molar mandibular segments.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3699017

DOI: 10.1259/dmfr.20110429
PubMed: 23360688
PubMed Central: 3699017

Affiliations:

Le document en format XML

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<term>Arcade dentaire (imagerie diagnostique)</term>
<term>Biais de l'observateur</term>
<term>Conception de prothèse dentaire</term>
<term>Céphalométrie ()</term>
<term>Céphalométrie (normes)</term>
<term>Femelle</term>
<term>Humains</term>
<term>Implants dentaires</term>
<term>Logiciel</term>
<term>Mandibule (imagerie diagnostique)</term>
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<term>Normes de référence</term>
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<term>Radiographie numérisée dentaire (normes)</term>
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<term>Radiographie panoramique (normes)</term>
<term>Reproductibilité des résultats</term>
<term>Sujet âgé</term>
<term>Sujet âgé de 80 ans ou plus</term>
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<term>Mandibule</term>
<term>Mâchoire partiellement édentée</term>
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<term>Céphalométrie</term>
<term>Radiographie numérisée dentaire</term>
<term>Radiographie panoramique</term>
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<term>Radiographic Image Enhancement</term>
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<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Contrast Media</term>
<term>Dental Implants</term>
<term>Dental Prosthesis Design</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
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<term>Patient Care Planning</term>
<term>Reference Standards</term>
<term>Reproducibility of Results</term>
<term>Software</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Adulte</term>
<term>Adulte d'âge moyen</term>
<term>Alliages</term>
<term>Biais de l'observateur</term>
<term>Conception de prothèse dentaire</term>
<term>Céphalométrie</term>
<term>Femelle</term>
<term>Humains</term>
<term>Implants dentaires</term>
<term>Logiciel</term>
<term>Marques de positionnement</term>
<term>Mâle</term>
<term>Normes de référence</term>
<term>Planification des soins du patient</term>
<term>Produits de contraste</term>
<term>Radiographie numérisée dentaire</term>
<term>Radiographie panoramique</term>
<term>Reproductibilité des résultats</term>
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<front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title>
<p>Conventional panoramic radiography, a widely used radiographic examination tool in implant treatment planning, allows evaluation of the available bone height before inserting posterior mandibular implants. Image distortion and vertical magnification due to projection geometry is well described for rotational panoramic radiographs. To assess the accuracy of vertical height measurements on direct digital panoramic radiographs, implants and metal balls positioned in the posterior mandible were used as radio-opaque reference objects. The reproducibility of the measuring method was assessed by the inter- and intraobserver agreements.</p>
</sec>
<sec><title>Methods:</title>
<p>Direct digital panoramic radiographs, performed using a Kodak 8000C (Eastman Kodak Company, Rochester, NY), of 17 partially edentulous patients (10 females, 7 males, mean age 65 years) were selected from an X-ray database gathered during routine clinical evaluation of implant sites. Proprietary software and a mouse-driven calliper were used to measure the radiological length of 25 implants and 18 metal reference balls, positioned in mandibular posterior segments. The distortion ratio (DR) was calculated by dividing the radiological implant length by the implant's real length and the radiological ball height by the ball's real height.</p>
</sec>
<sec><title>Results:</title>
<p>Mean vertical DR was 0.99 for implants and 0.97 for balls, and was unrelated to mandibular sites, side, age, gender or observer. Inter- and intraobserver agreements were acceptable for both reference objects.</p>
</sec>
<sec><title>Conclusions:</title>
<p>Vertical measurements had acceptable accuracy and reproducibility when a software-based calibrated measurement tool was used, confirming that digital panoramic radiography can be reliably utilized to determine the pre-operative implant length in premolar and molar mandibular segments.</p>
</sec>
</div>
</front>
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Accuracy of vertical height measurements on direct digital panoramic radiographs using posterior mandibular implants and metal balls as reference objects

Accuracy of vertical height measurements on direct digital panoramic radiographs using posterior mandibular implants and metal balls as reference objects

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	Serveur d'exploration sur le patient édenté
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