title: [Comparison of self-controlled retruded approach and bimanual manipulation method on the relationship of incisal point displacement in the mandibular retruded contact position].
abstract: OBJECTIVE
  To evaluate the relationship of incisal point displacements in the mandibular retruded contact position (RCP) between the self-controlled retruded approach and bimanual manipulation method.
  
  
  METHODS
  Twelve healthy young volunteers were selected. The RCP was guided through the self-controlled retruded approach and bimanual manipulation method. The track of the incisal point was recorded, using the mandibular movement trace recording system. The movement direction of the incisal point in horizontal plane was observed. The distance between the incisal point of the RCP and intercuspal contact position (ICP) was measured.
  
  
  RESULTS
  Except one volunteer's incisal point movement direction of the RCP was oblique, others were straight toward posterior. The displacements of the incisal point from the ICP to RCP guided through self-controlled approach and bimanual manipulation method were (1.15 ± 0.64) mm, (0.98 ± 0.29) mm respectively. There was no statistical significance between the two methods (P > 0.05).
  
  
  CONCLUSIONS
  The displacements of the incisal point from the ICP to RCP guided through self-controlled approach and bimanual manipulation method are approximately the same.
authors.affiliation: Department of Prosthodontics, Peking University Hospital and School of Stomatology , Beijing 100081, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Stomatology, Beijing Haidian Maternal and Child Health Hospital, Beijing 100080, China.
authors.forename: Yun-xia
authors.initials: YX
authors.lastname: Li
authors.affiliation: Department of Prosthodontics, Peking University Hospital and School of Stomatology , Beijing 100081, China.
authors.forename: Yan-feng
authors.initials: YF
authors.lastname: Kang
authors.affiliation: Department of Prosthodontics, Peking University Hospital and School of Stomatology , Beijing 100081, China.
authors.forename: Guang-ju
authors.initials: GJ
authors.lastname: Yang
authors.affiliation: Department of Prosthodontics, Peking University Hospital and School of Stomatology , Beijing 100081, China.
authors.forename: Qiu-fei
authors.initials: QF
authors.lastname: Xie
mesh_terms: D003766:Dental Occlusion; D006801:Humans; D007574:Jaw Relation Record; D008334:Mandible; D009068:Movement