title: [Vibration analysis of maxillary removable partial denture using three types of major connectors].
abstract: This study investigated the effect on the vibratory characteristics of a Class I Kennedy maxillary removable partial denture when varying its major connector design. Three types of major connector were used: the U-shaped palatal connector type (UPCD), the single palatal bar type (SPBD), and the anterior-posterior palatal bars type (APBD). Three types of denture were excited by a shaker, and frequency response functions were recorded on an FFT analyzer to identify their modal shapes. In addition, transient response simulations were carried out and the maximum displacement of each denture was obtained. The maximum displacements were statistically analyzed by ANOVA and Scheffe's F test (p < 0.01). In the modal shapes of SPBD, there were no nodal points on the major connector at all natural modes. The maximum displacement of SPBD was significantly smaller than that of UPCD and APBD. This study indicated that SPBD was a more rigid design than UPCD and APBD from the standpoint of vibratory characteristics.
authors.affiliation: Department of Maxillofacial Reconstruction and Function, Division of Maxillofacial/Neck Reconstruction, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University.
authors.forename: Naoki
authors.initials: N
authors.lastname: Matsumoto
mesh_terms: D003779:Denture Design; D003832:Denture, Partial, Removable; D008437:Maxilla; D014732:Vibration