title: Biomechanical validation of an artificial tooth-periodontal ligament-bone complex for in vitro orthodontic load measurement.
abstract: OBJECTIVE
  To develop an artificial tooth-periodontal ligament (PDL)-bone complex (ATPBC) that simulates clinical crown displacement.
  
  
  METHODS
  An ATPBC was created. It had a socket hosting a tooth with a thin layer of silicon mixture in between for simulating the PDL. The complex was attached to a device that allows applying a controlled force to the crown and measuring the resulting crown displacement. Crown displacements were compared to previously published data for validation.
  
  
  RESULTS
  The ATPBC that had a PDL made of two types of silicones, 50% gasket sealant No. 2 and 50% RTV 587 silicone, with a thickness of 0.3 mm, simulated the PDL well. The mechanical behaviors (1) force-displacement relationship, (2) stress relaxation, (3) creep, and (4) hysteresis were validated by the published results.
  
  
  CONCLUSIONS
  The ATPBC simulated the crown displacement behavior reported from biological studies well.
authors.affiliation: Department of Mechanical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA.
authors.forename: Zeyang
authors.initials: Z
authors.lastname: Xia
authors.forename: Jie
authors.initials: J
authors.lastname: Chen
mesh_terms: D001696:Biomechanical Phenomena; D003799:Dental Stress Analysis / Q000379:methods; D003765:Models, Dental; D010513:Periodontal Ligament; D012828:Silicones / Q000737:chemistry*; D019228:Tooth Crown; D014093:Tooth, Artificial
chemical_list: D012828:Silicones