title: The influence of various attachment types in mandibular implant-retained overdentures on maximum bite force and EMG.
abstract: The type of attachment that is used in oral rehabilitation by means of implant-retained mandibular overdentures may influence the retention and the stability of the denture. In this study, we examined the hypothesis that a better retention and stability of the denture improve the oral function. Eighteen edentulous subjects received 2 permucosal implants, a new denture, and, successively, 3 suprastructure modalities. Maximum bite force and electrical activity of the masseter and temporalis muscles were measured. The maximum bite force nearly doubled after treatment for each of the 3 attachments. However, the average bite force after treatment was still only two-thirds of the value obtained for dentate subjects. No large differences in maximum bite force and muscle activity were found among the 3 attachment types. Temporalis activity was significantly lower than masseter activity when subjects clenched without implant support. There was no difference in activity when subjects clenched with implant support.
authors.affiliation: Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center Utrecht, The Netherlands. F.M.C.vanKampen@med.uu.nl
authors.forename: F M C
authors.initials: FM
authors.lastname: van Kampen
authors.forename: A
authors.initials: A
authors.lastname: van der Bilt
authors.forename: M S
authors.initials: MS
authors.lastname: Cune
authors.forename: F
authors.initials: F
authors.lastname: Bosman
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001732:Bite Force; D018592:Cross-Over Studies; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003781:Denture Retention; D003828:Denture, Overlay; D004576:Electromyography; D005260:Female; D006801:Humans; D008280:Magnetics / Q000295:instrumentation; D008297:Male; D008334:Mandible / Q000502:physiology / Q000601:surgery*; D008406:Masseter Muscle / Q000502:physiology; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D013223:Statistics as Topic; D013499:Surface Properties; D013703:Temporal Muscle / Q000502:physiology; D014159:Transducers
chemical_list: D015921:Dental Implants