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Article: The reproducibility of cephalometric landmarks: an experimental study on skulls.

TitleThe reproducibility of cephalometric landmarks: an experimental study on skulls.
Authors
Issue Date1998
Citation
Australian Orthodontic Journal, 1998, v. 15 n. 3, p. 177-185 How to Cite?
AbstractFew previous cephalometric studies have used dry skulls in order to eliminate the effects of the facial soft tissues. The aim of this study were to quantify the intra-examiner reproducibility of the commonly used cephalometric landmarks, angles and distances, using dry skulls and to compare these errors with previous error data obtained from normal cephalograms of living patients. Thirty skulls were mounted in a purpose-designed holder and repeat cephalograms of each skull were recorded and digitised. All measurements were made relative to an X-Y coordinate reference grid. Scattergrams were produced to show the characteristic distribution of the intra-examiner reproducibility errors for the landmarks, and the reproducibility of the angles and distances were tabulated. This data was compared with a related study that included the soft tissue profile. The standard deviations of the skeletal and dental angles and distances were greater in the presence of the soft tissues. These differences were up to four times larger for measurements including the location of Nasion (e.g. SNA, SNB and SNPg), which was the landmark location most affected by the presence of soft tissues, and for the distance: Incisal tip of Lower Incisor to Pogonion. Anterior Nasal Spine, in the horizontal plane, was also greatly affected by the presence of the soft tissues. By using dry skulls, the errors observed in this study may serve as standards for the rational interpretation of clinical cephalometric values.
Persistent Identifierhttp://hdl.handle.net/10722/154038
ISSN
2015 Impact Factor: 0.451
2015 SCImago Journal Rankings: 0.317

 

DC FieldValueLanguage
dc.contributor.authorHägg, Uen_US
dc.contributor.authorCooke, MSen_US
dc.contributor.authorChan, TCen_US
dc.contributor.authorTng, TTen_US
dc.contributor.authorLau, PYen_US
dc.date.accessioned2012-08-08T08:22:56Z-
dc.date.available2012-08-08T08:22:56Z-
dc.date.issued1998en_US
dc.identifier.citationAustralian Orthodontic Journal, 1998, v. 15 n. 3, p. 177-185en_US
dc.identifier.issn0587-3908en_US
dc.identifier.urihttp://hdl.handle.net/10722/154038-
dc.description.abstractFew previous cephalometric studies have used dry skulls in order to eliminate the effects of the facial soft tissues. The aim of this study were to quantify the intra-examiner reproducibility of the commonly used cephalometric landmarks, angles and distances, using dry skulls and to compare these errors with previous error data obtained from normal cephalograms of living patients. Thirty skulls were mounted in a purpose-designed holder and repeat cephalograms of each skull were recorded and digitised. All measurements were made relative to an X-Y coordinate reference grid. Scattergrams were produced to show the characteristic distribution of the intra-examiner reproducibility errors for the landmarks, and the reproducibility of the angles and distances were tabulated. This data was compared with a related study that included the soft tissue profile. The standard deviations of the skeletal and dental angles and distances were greater in the presence of the soft tissues. These differences were up to four times larger for measurements including the location of Nasion (e.g. SNA, SNB and SNPg), which was the landmark location most affected by the presence of soft tissues, and for the distance: Incisal tip of Lower Incisor to Pogonion. Anterior Nasal Spine, in the horizontal plane, was also greatly affected by the presence of the soft tissues. By using dry skulls, the errors observed in this study may serve as standards for the rational interpretation of clinical cephalometric values.en_US
dc.languageengen_US
dc.relation.ispartofAustralian orthodontic journalen_US
dc.subject.meshAdulten_US
dc.subject.meshCephalometry - Standardsen_US
dc.subject.meshFace - Anatomy & Histologyen_US
dc.subject.meshHumansen_US
dc.subject.meshIncisoren_US
dc.subject.meshNasal Boneen_US
dc.subject.meshObserver Variationen_US
dc.subject.meshReference Standardsen_US
dc.subject.meshReproducibility Of Resultsen_US
dc.subject.meshSkull - Anatomy & Histologyen_US
dc.titleThe reproducibility of cephalometric landmarks: an experimental study on skulls.en_US
dc.typeArticleen_US
dc.identifier.emailHägg, U:euohagg@hkusua.hku.hken_US
dc.identifier.authorityHägg, U=rp00020en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid10204427-
dc.identifier.scopuseid_2-s2.0-0032175841en_US
dc.identifier.hkuros39238-
dc.identifier.volume15en_US
dc.identifier.issue3en_US
dc.identifier.spage177en_US
dc.identifier.epage185en_US
dc.publisher.placeAustraliaen_US
dc.identifier.scopusauthoridHägg, U=7006790279en_US
dc.identifier.scopusauthoridCooke, MS=7202147454en_US
dc.identifier.scopusauthoridChan, TC=7402687561en_US
dc.identifier.scopusauthoridTng, TT=6507663848en_US
dc.identifier.scopusauthoridLau, PY=35823079700en_US

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