TY - JOUR
T1 - The potential role of stereolithography in the study of facial aging
AU - Pessa, Joel E.
PY - 2001/2
Y1 - 2001/2
N2 - The potential role of high-resolution stereolithography for the study of facial aging was evaluated. Stereolithography has been used extensively in the engineering sciences to create model replicas prior to full production. More recently, stereolithography has found a role in the preoperative planning of complex dentofacial anomalies. Previous work has suggested that continued differential growth of the maxilla may occur throughout life. To further evaluate this finding, computed tomography scans were collected from younger (mean, 20.2 years) and older (mean, 58.8 years) individuals (N = 20). Both men and women were included. An exact replica of the facial skeleton was made for each subject by the process of laser polymerization. The angles of the maxillary wall and piriform aperture, defined by specific points, were measured relative to sella-nasion. Height, width, and depth changes were also evaluated. Findings show that angular changes occurred with age. The mean angle of the maxilla relative to sella-nasion decreased from 69° to 56.8° with age (P = .015). The mean angle of the piriform likewise decreased from 65.1° to 55.7° (P = .019). This angular change with age suggests that differential growth may continue throughout life. This work highlights the potential role of 3-dimensional modeling for future research in the field of facial aging. Curve and contour analysis are 2 additional areas in which stereolithography may yield valuable insights into the mechanisms of facial growth.
AB - The potential role of high-resolution stereolithography for the study of facial aging was evaluated. Stereolithography has been used extensively in the engineering sciences to create model replicas prior to full production. More recently, stereolithography has found a role in the preoperative planning of complex dentofacial anomalies. Previous work has suggested that continued differential growth of the maxilla may occur throughout life. To further evaluate this finding, computed tomography scans were collected from younger (mean, 20.2 years) and older (mean, 58.8 years) individuals (N = 20). Both men and women were included. An exact replica of the facial skeleton was made for each subject by the process of laser polymerization. The angles of the maxillary wall and piriform aperture, defined by specific points, were measured relative to sella-nasion. Height, width, and depth changes were also evaluated. Findings show that angular changes occurred with age. The mean angle of the maxilla relative to sella-nasion decreased from 69° to 56.8° with age (P = .015). The mean angle of the piriform likewise decreased from 65.1° to 55.7° (P = .019). This angular change with age suggests that differential growth may continue throughout life. This work highlights the potential role of 3-dimensional modeling for future research in the field of facial aging. Curve and contour analysis are 2 additional areas in which stereolithography may yield valuable insights into the mechanisms of facial growth.
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U2 - 10.1067/mod.2001.110984
DO - 10.1067/mod.2001.110984
M3 - Article
C2 - 11174556
AN - SCOPUS:0035259496
SN - 0889-5406
VL - 119
SP - 117
EP - 120
JO - American Journal of Orthodontics and Dentofacial Orthopedics
JF - American Journal of Orthodontics and Dentofacial Orthopedics
IS - 2
ER -