title: Analysis of nasal cavity morphology and nasolabial development of the normal Han ethnic people under age of 12.
abstract: This study aims to establish the three-dimensional (3D) reconstruction model of nasal cavity for China's Han ethnic population (0-12 years) by laser scanning and photogrammetry, and thus to elucidate the developmental mechanism of nasal cavity morphology and nasolabial region.
  
  
  
  A total of 260 normal people of the Han ethnic aged 0-12 were recruited as subjects, among whom 60 were scanned for nasal cavity morphology in order to get reconstructed models with the computer engineering software. Photogrammetry was performed for the remaining 200 subjects to measure the 7 parameters that reflect vertically or horizontally the anatomical features of the nasolabial region.
  
  
  
  The interior morphology of nasal cavity was accurately established by 3D laser scanning and photogrammetry with the optimal morphology of nasal cavity simulated through 3D reconstruction. Development of nasal cavity and nasolabial region was also analyzed.
  
  
  
  The 3D laser scanning analysis is the ideal method to analyze the interior morphology of nasal cavity by reconstructing the normal interior morphology of nasal cavity and quantitatively analyze the change of nasal cavity morphology with age. Photogrammetry can be applied to conduct the morphological measurement for the nasolabial region and, thus, assessing the development of the nasolabial region with age, which provides information for choosing the timing and options of surgery in treating harelip and nasal deformity.
authors.affiliation: Stomatology Department of Children's Hospital of Chongqing Medical University, Chongqing, China. li_wanshanal@163.com.
authors.forename: L
authors.initials: L
authors.lastname: Li
authors.forename: W-S
authors.initials: WS
authors.lastname: Li
authors.forename: Y-U
authors.initials: YU
authors.lastname: Li
authors.forename: L-S
authors.initials: LS
authors.lastname: Liao
authors.forename: Y-T
authors.initials: YT
authors.lastname: Liu
authors.forename: L
authors.initials: L
authors.lastname: Li
mesh_terms: D002648:Child; D002675:Child, Preschool; D002681:China; D006801:Humans; D007223:Infant; D009296:Nasal Cavity / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000254:growth & development; D009666:Nose / Q000033:anatomy & histology / Q000254:growth & development; D010256:Paranasal Sinuses / Q000033:anatomy & histology / Q000254:growth & development; D010780:Photogrammetry