title: Patient satisfaction and masticatory efficiency of single implant-retained mandibular overdentures using the stud and magnetic attachments.
abstract: OBJECTIVE
  To study patient satisfaction and masticatory efficiency of single implant-retained mandibular overdentures using the stud and magnetic attachments in a randomized clinical trial with a crossover design.
  
  
  METHODS
  Patients received a single implant placed in the midline of the mandible and either a stud (Locator) or a magnetic (Magfit) attachment, assigned at random. Patient satisfaction, including patient comfort, speech, chewing ability and retention, and masticatory efficiency measured by chewing peanuts, were assessed before and 3 months after attachment insertion. Patient satisfaction and masticatory efficiency were evaluated again 3 months after insertion of the alternate attachment bodies. The outcomes were compared before and after insertion of the attachments and between the two types of attachments using Wilcoxon signed rank tests.
  
  
  RESULTS
  Patient overall satisfaction, comfort, speech, chewing ability, and retention improved significantly after insertion of both types of attachment bodies (p<0.05). Masticatory efficiencies also increased in both the Locator and the Magfit groups (p<0.05). There were no statistically significant differences in patient overall satisfaction, comfort, speech, and retention between the two types of attachments (p>0.05). The Locator attachments performed better in perceived chewing ability than the Magfit (p<0.05), but there was no statistically significant difference in masticatory efficiency between the two attachment types (p>0.05).
  
  
  CONCLUSIONS
  Clinical outcomes were significantly improved in single implant-retained mandibular overdentures using either the Locator or the Magfit magnetic attachments. There was no difference in masticatory efficiency between the two attachment types.
authors.affiliation: Zhengzhou Hospital of Stomatology, Zhengzhou, Henan, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Cheng
authors.forename: Guifeng
authors.initials: G
authors.lastname: Sun
authors.forename: Jingyu
authors.initials: J
authors.lastname: Huo
authors.forename: Xiaoji
authors.initials: X
authors.lastname: He
authors.forename: Yining
authors.initials: Y
authors.lastname: Wang
authors.forename: Yan-Fang
authors.initials: YF
authors.lastname: Ren
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D018592:Cross-Over Studies; D003758:Dental Implantation, Endosseous; D019250:Dental Implants, Single-Tooth; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported; D003826:Denture, Complete, Lower; D003828:Denture, Overlay; D005260:Female; D006801:Humans; D059346:Magnets; D008297:Male; D008334:Mandible; D008409:Mastication; D008875:Middle Aged; D017060:Patient Satisfaction; D018709:Statistics, Nonparametric