Number and Location of Mini-Implants Retaining a Mandibular Overdenture to Resist Lateral Forces: A Preliminary In Vitro Study.
The aim of this study was to determine the optimal number and location of mini-implants retaining an overdenture to resist lateral forces.



A strain gauge was attached to a mini-implant and placed in an edentulous mandible model. The following different implant locations were evaluated: one mini-implant at the midline, two mini-implants in the lateral incisor regions, two mini-implants in the canine regions, and four mini-implants.



Lateral forces on mandibular overdentures retained by one mini-implant at the midline or two mini-implants in the lateral incisor regions appeared to be advantageous when compared with placing two mini-implants in the canine regions or four mini-implants.



Fewer mini-implants resulted in less lateral stress, while four were associated with an unequal stress distribution.
Kyozo
K
Takagaki
Tomoya
T
Gonda
Yoshinobu
Y
Maeda
D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D003779:Denture Design; D003828:Denture, Overlay; D006801:Humans; D066298:In Vitro Techniques; D008334:Mandible; D003765:Models, Dental
D015921:Dental Implants