Stereophotogrammetry-based facial depth measurements: a novel method for quantifying facial projection
Intellectual and Developmental Disabilities Research Center; Shriver Center
Adolescent; Adult; Face; Female; Hong Kong; Humans; Male; Orthognathic Surgery; Photogrammetry; Reference Values; Software
Body Regions | Diagnosis | Epidemiology | Oral and Maxillofacial Surgery
BACKGROUND: Orthognathic surgery leads to alteration of the spatial relationship of the mandible and maxilla resulting changes in the degree of facial projection. Traditional 2-dimensional cephalometry and photographic techniques do not provide data on facial depth. Though stereophotogrammetry can be used as a noninvasive method for evaluating facial depth, the unavailability of ethnicity-specific norms hinder its routine use in clinical practice. The objectives of this study were to (a) generate an analytic scheme suitable for evaluating facial depth using stereophotogrammetry and (b) create normative data for the facial depth measurements for young Hong Kong Chinese adults.
METHODS: Stereophotographic images from 41 male and 45 female ethnic Chinese young adults without facial deformities were analyzed. Facial depth measurements were performed based on standard anthropometric landmarks, with the aid of 3dMDVultus software.
RESULTS: All facial depth measurements were found in absolute terms to be significantly higher in males. In contrast, the upper face, maxillary, and sublabial depth indices were significantly higher in females, whereas no significant gender differences emerged for lower facial and maxillomandibular indices.
CONCLUSIONS: A novel method of using stereophotographic images for quantifying facial depth was evaluated. Normative facial depth measurements for young Hong Kong Chinese adults were established. This gender-specific database can be used as a reference in the diagnosis, treatment planning, or evaluation of outcomes after surgical correction of facial deformities.
DOI of Published Version
Jayaratne YS, Deutsch CK, Zwahlen RA. Stereophotogrammetry-based facial depth measurements: a novel method for quantifying facial projection. Surg Innov. 2014 Feb;21(1):59-64. doi: 10.1177/1553350613475883. Epub 2013 Feb 18. PubMed PMID: 23423724; PubMed Central PMCID: PMC3815515. Link to article on publisher's site
Jayaratne, Yasas S. N.; Deutsch, Curtis K.; and Zwahlen, Roger A., "Stereophotogrammetry-based facial depth measurements: a novel method for quantifying facial projection" (2014). Intellectual and Developmental Disabilities Research Center Publications and Presentations. 7.