An evaluation of the changes in soft-tissue profile form induced by orthodontic therapy
作者： C.L.B. Lavelle , Roberto S. Carvalho
DOI: 10.1016/0889-5406(89)90113-3
关键词: Soft tissue 、 Series (mathematics) 、 Finite element method 、 After treatment 、 Geodetic datum 、 Orthodontics 、 Distortion 、 Value (computer science) 、 Dentistry 、 Mathematics 、 Continuum mechanics 、 General Medicine
摘要: In view of the growing concensus that traditional cephalometric appraisals yield data dubious scientific value, changes in soft-tissue profile forms were evaluated by an alternative technique. This involved dividing form into a series triangular finite elements spanning homologous datum points. With use techniques derived from continuum mechanics, computing degree distortion each triangle after treatment (target element) compared with before (reference terms specific size and shape parameters. comparison samples patients Class I II malocclusion, varying patterns facial change noted, depending on parameters analyzed. The results, therefore, showed although such offer rigorous potential, further investigation is required to identify more appropriate
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