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Article: The difference between registered natural head position and estimated natural head position in three dimensions

TitleThe difference between registered natural head position and estimated natural head position in three dimensions
Authors
Keywordsclass III
estimated natural head position
natural head position
orthognathic surgery
registered natural head position
Issue Date2017
PublisherChurchill Livingstone. The Journal's web site is located at http://www.elsevier.com/locate/ijom
Citation
International Journal of Oral and Maxillofacial Surgery, 2017, v. 47 n. 2, p. 276-282 How to Cite?
AbstractThis study determined the intra-rater and inter-rater reliability of re-orientating three-dimensional (3D) facial images into the estimated natural head position. Three-dimensional facial images of 15 pre-surgical class III orthognathic patients were obtained and automatically re-orientated into natural head position (RNHP) using a 3D stereophotogrammetry system and in-house software. Six clinicians were asked to estimate the NHP of these patients (ENHP); they re-estimated five randomly selected 3D images after a 2-week interval. The differences in yaw, roll, pitch, and chin position between RNHP and ENHP were measured. For intra-rater reliability, the intra-class correlation coefficient (ICC) values ranged from 0.55 to 0.77, representing moderate reliability for roll, yaw, pitch, and chin position, while for inter-rater reliability, the ICC values ranged from 0.38 to 0.58, indicating poor to moderate reliability. The median difference between ENHP and RNHP was small for roll and yaw, but larger for pitch. There was a tendency for the clinicians to estimate NHP with the chin tipped more posteriorly (6.3 ± 5.2 mm) compared to RNHP, reducing the severity of the skeletal deformity in the anterior–posterior direction. © 2017 International Association of Oral and Maxillofacial Surgeons
Persistent Identifierhttp://hdl.handle.net/10722/244802
ISSN
2017 Impact Factor: 2.164
2015 SCImago Journal Rankings: 0.854
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhu, S-
dc.contributor.authorKeeling, A-
dc.contributor.authorHsung, TC-
dc.contributor.authorYang, Y-
dc.contributor.authorKhambay, B-
dc.date.accessioned2017-09-18T01:59:19Z-
dc.date.available2017-09-18T01:59:19Z-
dc.date.issued2017-
dc.identifier.citationInternational Journal of Oral and Maxillofacial Surgery, 2017, v. 47 n. 2, p. 276-282-
dc.identifier.issn0901-5027-
dc.identifier.urihttp://hdl.handle.net/10722/244802-
dc.description.abstractThis study determined the intra-rater and inter-rater reliability of re-orientating three-dimensional (3D) facial images into the estimated natural head position. Three-dimensional facial images of 15 pre-surgical class III orthognathic patients were obtained and automatically re-orientated into natural head position (RNHP) using a 3D stereophotogrammetry system and in-house software. Six clinicians were asked to estimate the NHP of these patients (ENHP); they re-estimated five randomly selected 3D images after a 2-week interval. The differences in yaw, roll, pitch, and chin position between RNHP and ENHP were measured. For intra-rater reliability, the intra-class correlation coefficient (ICC) values ranged from 0.55 to 0.77, representing moderate reliability for roll, yaw, pitch, and chin position, while for inter-rater reliability, the ICC values ranged from 0.38 to 0.58, indicating poor to moderate reliability. The median difference between ENHP and RNHP was small for roll and yaw, but larger for pitch. There was a tendency for the clinicians to estimate NHP with the chin tipped more posteriorly (6.3 ± 5.2 mm) compared to RNHP, reducing the severity of the skeletal deformity in the anterior–posterior direction. © 2017 International Association of Oral and Maxillofacial Surgeons-
dc.languageeng-
dc.publisherChurchill Livingstone. The Journal's web site is located at http://www.elsevier.com/locate/ijom-
dc.relation.ispartofInternational Journal of Oral and Maxillofacial Surgery-
dc.rightsPosting accepted manuscript (postprint): © <year>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectclass III-
dc.subjectestimated natural head position-
dc.subjectnatural head position-
dc.subjectorthognathic surgery-
dc.subjectregistered natural head position-
dc.titleThe difference between registered natural head position and estimated natural head position in three dimensions-
dc.typeArticle-
dc.identifier.emailYang, Y: yangyanq@hku.hk-
dc.identifier.authorityYang, Y=rp00045-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijom.2017.07.016-
dc.identifier.pmid28823907-
dc.identifier.scopuseid_2-s2.0-85027443862-
dc.identifier.hkuros279305-
dc.identifier.volume47-
dc.identifier.issue2-
dc.identifier.spage276-
dc.identifier.epage282-
dc.identifier.isiWOS:000424716400020-
dc.publisher.placeUnited Kingdom-

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