Jiuxiang Lin

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  • Q Nie, J Lin
  • American journal of orthodontics and dentofacial…
  • 1999
The purpose of this study was to determine whether there is a prevalent tendency for intermaxillary tooth size discrepancies among different malocclusion groups. This study consisted of 60 subjects who served as the normal occlusion group and 300 patients divided into 5 malocclusion groups (ie, Class I with bimaxillary protrusion, Class II Division 1, Class(More)
INTRODUCTION The purpose of this study was to establish a quantitative cervical vertebral maturation (CVM) system for adolescents with normal occlusion. METHODS Mixed longitudinal data were used. The subjects included 87 children and adolescents from 8 to 18 years old with normal occlusion (32 boys, 55 girls) selected from 901 candidates. Sequential(More)
Objective : To measure the tooth lengths of fully developed permanent upper incisors and to qualitatively evaluate the root shapes of the incisors in patients with cleft lip and palate (CLP). Design : Cross-sectional, noninterventional, case-control imaging study. Setting : Hospital and Stomatology Unit of Peking University,(More)
INTRODUCTION Lingual orthodontics has developed rapidly in recent years; however, research on torque control variance of the maxillary incisors in both lingual and labial orthodontics is still limited, especially studies with 3-dimensional finite element methods. Thorough understanding of the biomechanical differences of incisor torque control during(More)
OBJECTIVES To test the hypothesis that the sagittal position of the anterior teeth has no effect on pharyngeal airway dimension or hyoid bone position and to investigate the influence of orthodontic retraction of the anterior teeth on each section of pharynx and hyoid position. MATERIALS AND METHODS Forty-four Class I bimaxillary protrusion adults,(More)
OBJECTIVE To study the craniofacial changes of adolescents followed longitudinally with their heads oriented in natural head position. MATERIALS AND METHODS Longitudinal cephalograms of adolescents (n=28) with normal occlusion, selected from among 900 candidates, were taken at 13 and again at 18 years of age. Modified elaborate mesh diagrams were(More)
Inflammatory bowel disease (IBD) is an intestinal immune-dysfunctional disease worldwide whose prevalence increasing in Asia including China. It is a chronic disease of the gastrointestinal tract with unknown cause. Exosomes are small vesicles in various body fluids. They have diameters of 40–120 nm, and one of their functions is long-distance transfer of(More)
The aim of this study was to validate a newly developed three-dimensional (3D) structured light scanning system in recording the facial morphology. The validation was performed in three aspects including accuracy, precision and reliability. The accuracy and precision were investigated using a plaster model with 19 marked landmarks. The accuracy was(More)
all-trans retinoic acid (atRA), the oxidative metabolite of vitamin A, is essential for normal embryonic development. Also, high levels of atRA are teratogenic in many species and can effectively induce cleft palate in the mouse. Most cleft palate resulted from the failed fusion of secondary palate shelves, and maintenance of the normal cell proliferation(More)
BACKGROUND Platelet-derived growth factor C (PDGF-C) was recently identified as a member of the PDGF ligand family. Some observation suggests that PDGF-C could play an important role in palatogenesis highlighted by the Pdgfc(-/-) mouse with cleft palate, which led us to examine the mechanism of PDGF-C signaling in palatogenesis. It is well known that(More)