Effects of Different Head Positioning Methods on Facial Soft Tissue Analysis Using Stereophotogrammetry

Amuk, Nisa Gül; Topsakal, Kübra Gülnur; Keklikci, Hasibe Baser

doi:10.1016/j.joms.2019.02.018

Journal of Oral and Maxillofacial Surgery

2019

DOI: 10.1016/j.joms.2019.02.018

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Effects of Different Head Positioning Methods on Facial Soft Tissue Analysis Using Stereophotogrammetry

Nisa Gül Amuk

Kübra Gülnur Topsakal

Hasibe Baser Keklikci

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Cited by 6 publications

(3 citation statements)

References 23 publications

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“…NHP has been shown to be reproducible 8 . The self‐balance plus mirror method described by Amuk et al, 9 places the patient's head in a repeatable, accurate position capturing the correct relationship of the maxillary teeth to the cranio‐facial horizontal axis.…”

mentioning

confidence: 99%

Digital to Analog Facially Generated Interchangeable Facebow Transfer: Capturing a Standardized Reference Position

Kois

Zeitler³

et al. 2022

Journal of Prosthodontics

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Although the evolution of digital technology continues to improve patient data acquisition, the ability to both standardize the recording of the maxillary occlusal plane and capture the necessary dynamic data for dento‐facial analysis remains elusive. This article describes step‐by‐step techniques to position the maxilla on an articulator using the natural head position and a facial reference system (Kois Facial Reference Glasses) for both analog and digital workflows. A photographic technique will be presented that captures the natural head position and allows the clinician to align a 2D reference photograph with the maxillary intraoral digital scan and the virtual articulator. Using this reference photograph, the clinician can record and communicate to the technician the maxillary arch position in relationship with the facial references, as well as transfer the additively manufactured casts in the same facial orientation for mounting and analysis either virtually or on an analog articulator.

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mentioning

confidence: 99%

Digital to Analog Facially Generated Interchangeable Facebow Transfer: Capturing a Standardized Reference Position

Kois

Zeitler³

et al. 2022

Journal of Prosthodontics

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“…[5][6][7] Moreover, the sitting and standing NHP have been used in soft tissue analysis. [8][9][10] The TrH plane based on the NHP is thought to be a good performance reference plane in the lateral photograph or cephalometry analysis (pitch axis). 11,12 Yet, for patients with torticollis or muscle disorders or imbalances, the NHP might be misleading especially in the frontal analysis (roll axis).…”

mentioning

confidence: 99%

“…The natural head position (NHP), that is, an upright position of the head, has been broadly used as a reference plane in ophthalmology, orthodontics, orthognathic surgery, etc 5–7. Moreover, the sitting and standing NHP have been used in soft tissue analysis 8–10. The TrH plane based on the NHP is thought to be a good performance reference plane in the lateral photograph or cephalometry analysis (pitch axis) 11,12.…”

mentioning

confidence: 99%

A Preliminary Study of a Novel Reference Plane of the Head: Comparing With the True Horizontal Plane

Tian

Zhou

Zhang

et al. 2022

Journal of Craniofacial Surgery

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A new reference plane of the head, based on soft tissue landmarks and suitable for clinical analysis and soft tissue measurements, is needed. We recently discovered a novel reference plane, that is, the COs plane, which was formed by bilateral Lateral Canthus and bilateral Otobasion Superius and might be horizontal at the natural head position (NHP). In this study, we investigated the angles between the COs plane and the true horizontal (TrH) plane while sitting and standing, aiming to explore whether the new plane could be used as a substitution for the reference plane in clinical practice. Briefly, 26 volunteers were enrolled. Their sitting and standing NHP were recorded using the 3dMDface system. In the pitch axis, the mean angle of COs/TrH was 0.29 degrees and 0.41 degrees for sitting and standing positions, respectively, showing no statistical difference (P > 0.05). However, in the roll axis, the mean angle of COs/ TrH for sitting position and standing positions was 1.08 and 1.33 degrees (P < 0.05), which was considered to be the result of habitual canting of the head. Moreover, there were no significant differences between the sitting and standing NHP, considering the COs/TrH angles (P > 0.05). To sum up, we concluded that the COs plane could be used as a reliable reference plane in certain soft tissue analysis and clinical applications.

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Investigation of the precision of a novel jaw tracking system in recording mandibular movements: A preliminary clinical study

Grande,

Lepidi,

Tesini

et al. 2024

Journal of Dentistry

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Effects of Different Head Positioning Methods on Facial Soft Tissue Analysis Using Stereophotogrammetry

Cited by 6 publications

References 23 publications

Digital to Analog Facially Generated Interchangeable Facebow Transfer: Capturing a Standardized Reference Position

Digital to Analog Facially Generated Interchangeable Facebow Transfer: Capturing a Standardized Reference Position

A Preliminary Study of a Novel Reference Plane of the Head: Comparing With the True Horizontal Plane

Investigation of the precision of a novel jaw tracking system in recording mandibular movements: A preliminary clinical study

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