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Masticatory Function with Implant-supported Overdentures

¹ Department of Head and Neck, Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center Utrecht, Str. 4.115, PO Box 85.060, 3508 AB Utrecht, The Netherlands; and
² Central Military Hospital, Utrecht, The Netherlands;

Correspondence: ^* corresponding author, a.vanderbilt{at}med.uu.nl

The type of attachment that is used in implant-supported mandibular overdentures may influence the retention and stability of the prosthesis and, thus, masticatory function. In this within-subject cross-over clinical trial, we examined the hypothesis that greater retention and stability of the overdenture improve the masticatory function. Eighteen edentulous subjects received 2 oral implants, a new overdenture, and, successively, 3 different suprastructure modalities: magnet, ball, and bar-clip. Masticatory performance, masticatory efficiency, and swallowing threshold were measured. The masticatory function significantly improved after implant treatment with each of the 3 attachments. We observed small differences in masticatory function among the 3 attachment types: slightly better masticatory performance with ball and bar-clip than with magnet attachments. The number of chewing cycles until swallowing hardly decreased after implant treatment. We conclude that significantly better masticatory performance, combined with a slightly smaller number of chewing cycles after implant treatment, results in smaller food particles being swallowed.

Key Words: masticatory performance • swallowing threshold • oral implant • mandibular overdenture • attachment

Journal of Dental Research, Vol. 83, No. 9, 708-711 (2004)
DOI: 10.1177/154405910408300910


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