title: [Quantitative study of application of magnetic attachments in mandibular complete overdentures].
abstract: OBJECTIVE
  To evaluate the clinical usefulness of magnetic attachment in mandibular complete overdentures.
  
  
  METHODS
  Seventeen patients were treated with Magnetic EX retained mandibular complete overdentures. The maximal masticatory force, retention and masticatory efficiency of mandibular complete overdentures with 2 or 3 Magnetic EX attachments were investigated at different periods. SPSS13.5 software package was used for statistical analysis.
  
  
  RESULTS
  The results showed mandibular complete overdentures with magnetic attachments increased the masticatory force, retention and masticatory efficiency(P<0.01). Mandibular complete overdentures with 3 magnetic attachments provided better retention than those with 2 magnetic attachments (P<0.01), but the masticatory force and masticatory efficiency didn't increase significantly(P>0.05).
  
  
  CONCLUSIONS
  Mandibular overdentures supported by magnetic attachments can be used to improve the maximal masticatory force, retention and masticatory efficiency. Mandibular overdenture with 2 magnetic attachment has more value in clinic.
authors.affiliation: Department of Stomatology, Zhenxin Hospital of Jiading District, Shanghai, China. junqzh@yahoo.com.cn
authors.forename: Jun-qi
authors.initials: JQ
authors.lastname: Zhang
authors.forename: Yu-shan
authors.initials: YS
authors.lastname: Wang
mesh_terms: D001732:Bite Force; D019094:Dental Prosthesis, Implant-Supported; D003828:Denture, Overlay; D006801:Humans; D060328:Magnetic Phenomena; D008334:Mandible