title: Randomized study on the effect of single-implant versus two-implant retained overdentures on implant loss and muscle activity: a 12-month follow-up report.
abstract: The objective was to evaluate and compare single- and two-implant retained overdentures for the rehabilitation of the edentulous mandible. Fifty-six edentulous subjects were eligible for inclusion. Using a random sampling system, a single implant or two implants were placed in the mandible. After 3 months, locator attachments were connected to the implants and the denture delivered with the retentive components incorporated in the denture base. Implant failure and muscle activity were evaluated at the 3-, 6-, and 12-month follow-up examinations. The study sample comprised 56 patients (32 male, 24 female), with a mean age of 58.2 years. A total of 84 implants were placed (28 in the single-implant group and 56 in the two-implant group). All patients completed the 12 months of follow-up. No significant differences were found between subjects in the two groups with respect to implant failure. With regard to improvements in muscle activity, the two-implant group showed statistically significant but perhaps not clinically important differences. Single-implant mandibular overdentures may be suggested as an alternative treatment modality for the rehabilitation of edentulous patients who cannot afford the cost of a two-implant overdenture.
authors.affiliation: Department of Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt; Department Prosthodontics, Faculty of Oral and Dental Medicine, Ibb University, Ibb, Yemen. Electronic address: am01012002@gmail.com.
authors.forename: A Y
authors.initials: AY
authors.lastname: Alqutaibi
authors.affiliation: Department of Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt.
authors.forename: A F
authors.initials: AF
authors.lastname: Kaddah
authors.affiliation: Department of Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt.
authors.forename: M
authors.initials: M
authors.lastname: Farouk
mesh_terms: D003758:Dental Implantation, Endosseous / Q000379:methods; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003781:Denture Retention; D003826:Denture, Complete, Lower; D003828:Denture, Overlay; D004576:Electromyography; D005152:Facial Muscles / Q000503:physiopathology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D016896:Treatment Outcome
keywords: dental implants; muscle activity; overdentures; single-implant overdenture