Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and accuracy of the technique in height measurements of mandibular bone in vivo.
Identifieur interne : 000470 ( Ncbi/Curation ); précédent : 000469; suivant : 000471Oblique lateral cephalometric radiographs of the mandible in implantology: usefulness and accuracy of the technique in height measurements of mandibular bone in vivo.
Auteurs : J W Verhoeven [Pays-Bas] ; M S CuneSource :
- Clinical oral implants research [ 0905-7161 ] ; 2000.
Descripteurs français
- KwdFr :
- Biais de l'observateur, Céphalométrie (), Humains, Implants dentaires, Interprétation de radiographie assistée par ordinateur, Mandibule (anatomie et histologie), Mandibule (imagerie diagnostique), Mâchoire édentée (imagerie diagnostique), Pose d'implant dentaire endo-osseux, Posture, Reproductibilité des résultats, Études longitudinales.
- MESH :
- anatomie et histologie : Mandibule.
- imagerie diagnostique : Mandibule, Mâchoire édentée.
- Biais de l'observateur, Céphalométrie, Humains, Implants dentaires, Interprétation de radiographie assistée par ordinateur, Pose d'implant dentaire endo-osseux, Posture, Reproductibilité des résultats, Études longitudinales.
English descriptors
- KwdEn :
- Cephalometry (methods), Dental Implantation, Endosseous, Dental Implants, Humans, Jaw, Edentulous (diagnostic imaging), Longitudinal Studies, Mandible (anatomy & histology), Mandible (diagnostic imaging), Observer Variation, Posture, Radiographic Image Interpretation, Computer-Assisted, Reproducibility of Results.
- MESH :
- chemical : Dental Implants.
- anatomy & histology : Mandible.
- diagnostic imaging : Jaw, Edentulous, Mandible.
- methods : Cephalometry.
- Dental Implantation, Endosseous, Humans, Longitudinal Studies, Observer Variation, Posture, Radiographic Image Interpretation, Computer-Assisted, Reproducibility of Results.
Abstract
Various radiographic techniques are used for longitudinal studies of changes in the height of the mandible with implants. Advantages and disadvantages of panoramic radiographs, lateral cephalometric radiographs, periapical films and modern CT- and MRI-techniques are briefly discussed. In this study, the usefulness of a conventional radiographic technique for measuring the height of the mandible, i.e. oblique lateral cephalometric radiography (OLCR) is evaluated in vivo. In 16 patients with permucosal implants in the anterior mandible OLCRs were repeated the same day. The mean total error for the radiographic procedure and analysis was 0.38 mm. The intra-observer error for the determination of the mandibular height by means of the image analysis procedure was 0.16 mm (analysis error). In 12 other patients pairs of radiographs of the same area of the mandible were made using both a "standard" horizontal X-ray beam direction and an individually determined "optimal" horizontal X-ray beam direction; the maximum difference between these two angulations was plus or minus 7.5 degrees. The effect of this different angulation on the height measurements is comparable to the above-mentioned total error of the measurement procedure (positioning error). An accurate positioning of the patient seems important for reliable measurements. The described radiographic (OLCR) and analysis (IBAS) technique can be used relatively simply for clinical studies. The described methods appear to be useful for measuring the mandibular height in longitudinal studies in patients with or without implants.
PubMed: 11168192
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Variation</term><term>Posture</term><term>Radiographic Image Interpretation, Computer-Assisted</term><term>Reproducibility of Results</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Biais de l'observateur</term><term>Céphalométrie</term><term>Humains</term><term>Implants dentaires</term><term>Interprétation de radiographie assistée par ordinateur</term><term>Pose d'implant dentaire endo-osseux</term><term>Posture</term><term>Reproductibilité des résultats</term><term>Études longitudinales</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Various radiographic techniques are used for longitudinal studies of changes in the height of the mandible with implants. Advantages and disadvantages of panoramic radiographs, lateral cephalometric radiographs, periapical films and modern CT- and MRI-techniques are briefly discussed. In this study, the usefulness of a conventional radiographic technique for measuring the height of the mandible, i.e. oblique lateral cephalometric radiography (OLCR) is evaluated in vivo. In 16 patients with permucosal implants in the anterior mandible OLCRs were repeated the same day. The mean total error for the radiographic procedure and analysis was 0.38 mm. The intra-observer error for the determination of the mandibular height by means of the image analysis procedure was 0.16 mm (analysis error). In 12 other patients pairs of radiographs of the same area of the mandible were made using both a "standard" horizontal X-ray beam direction and an individually determined "optimal" horizontal X-ray beam direction; the maximum difference between these two angulations was plus or minus 7.5 degrees. The effect of this different angulation on the height measurements is comparable to the above-mentioned total error of the measurement procedure (positioning error). An accurate positioning of the patient seems important for reliable measurements. The described radiographic (OLCR) and analysis (IBAS) technique can be used relatively simply for clinical studies. The described methods appear to be useful for measuring the mandibular height in longitudinal studies in patients with or without implants.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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