Mandibular implant-retained overdenture: a clinical trial of two anchorage systems.
This in-vivo study aimed to investigate the load on the working-side implant and on the edentulous distal mucosa of the nonworking side in a mandibular implant-retained overdenture (MIR-OVD) anchored to 2 implants by either a ball- or a clips-and-bar attachment. Three female patients were provided with duplicate dentures anchored in the 2 ways. Strain on the implant was investigated using a strain-gauged abutment, and load on the mucosa was measured using a suitably placed load cell. Ball attachments appeared to provide greater stability to the MIR-OVD, since load was more evenly distributed onto the distal mucosa of both sides. When the MIR-OVD was bar-anchored, axial load on the working-side abutment increased.
Menicucci
G
G
Department of Prosthodontics, University of Turin, Italy.
Lorenzetti
M
M
Pera
P
P
Preti
G
G
D000368:Aged; D001732:Bite Force; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003768:Dental Occlusion, Centric; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003781:Denture Retention; D003828:Denture, Overlay; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation / Q000601:surgery; D008334:Mandible / Q000601:surgery*; D008875:Middle Aged; D009061:Mouth Mucosa / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D013314:Stress, Mechanical; D013499:Surface Properties
D015921:Dental Implants