Volume Assessment of the Effect of Obturators on Facial Form Following Surgery for Head and Neck Cancer Using Stereophotogrammetry

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
T J CowardBrendan J J Scott

Abstract

To determine if stereophotogrammetry could be used to determine the effects of obturators on facial contour in relation to the measurement of facial volumes. Stereophotogrammetry images were recorded from 20 subjects with and without their obturators in place. These were converted into a stereolithographic format and overlaid. Registrations were made using the tissues on the normal areas of the face. Difference images were created, enabling surface areas and volumes to be calculated. To assess repeatability of measurement, 2 readings were recorded on each of 2 separate registrations. Data analysis between the sets of readings used correlation coefficients and paired t-tests. Coefficients of repeatability were also calculated. A comparison of readings for the surface areas showed the method of measurement was repeatable with no significant differences between the 2 repeated readings for registration 1 (p = 0.977, coefficient of repeatability = 101 mm2 ), registration 2 (p = 0.085, coefficient of repeatability = 106 mm2 ), and the mean of the two readings for registration 1 compared with registration 2 (p = 0.355, coefficient of repeatability = 103 mm2 ). Similar results were found for the volume measurements with no significant ...Continue Reading

References

Jul 1, 1997·British Journal of Plastic Surgery·T J CowardB J Scott
Feb 26, 2000·International Journal of Oral and Maxillofacial Surgery·T J CowardR Richards
Aug 23, 2002·International Journal of Oral and Maxillofacial Surgery·T J CowardR Richards
Aug 17, 2011·Archives of Otolaryngology--head & Neck Surgery·Patricio AndradesEben L Rosenthal
May 1, 1987·IEEE Transactions on Pattern Analysis and Machine Intelligence·K S ArunS D Blostein
Dec 18, 2013·The British Journal of Oral & Maxillofacial Surgery·Siti Adibah OthmanZainal Ariff Abdul Rahman
Jan 11, 2014·The Journal of Craniofacial Surgery·Helena O TaylorChristopher R Forrest
Sep 6, 2014·The International Journal of Prosthodontics·Trevor J CowardBrendan J J Scott
Sep 16, 2014·The British Journal of Oral & Maxillofacial Surgery·Wicher J van der MeerYijin Ren
Oct 4, 2014·The Journal of Prosthetic Dentistry·Soshi HanawaKeiichi Sasaki

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