Comparative Evaluation of Stability of Two Implants Versus Four Implants to Support a Complete Arch Fixed Prosthesis in the Mandible Opposing a Maxillary Complete Denture a Randomized Controlled Trial

Abstract

This study was conducted to comparatively evaluate the stability of 2 implants versus 4 implants to support a complete arch fixed prosthesis in the mandible opposing a maxillary complete denture. A total of 20 completely edentulous patients both male and female were included in the study and the patients were divided into two groups which were Group A (n=10) and Group B (n=10) where in Group A patients were selected to be treated with 2 implant placed in mandible and Group B patients were selected to be treated with 4 implant placement in the mandible and in both groups opposing maxillary complete denture. All patients received a new maxillary conventional denture to be able to study and evaluate the stability and clinical performance of 2 and 4 endosteal implants supporting a mandibular fixed prosthesis opposing a maxillary complete denture. In both groups i.e. Group A and Group B right after the implants were placed, angulated and straight abutments were torqued into implants and ISQ values were measured for each implants using Resonance Frequency Analysis (RFA) immediately post implant placement and at 3,6 and 12 months interval after prosthesis delivery. newlineResults obtained showed that there was statistically no significant difference across both the groups i.e. Group A with two implants placement and Group B with 4 implant placement as p value gt0.005. Thus, the study concluded that mean implant stability quotient was almost as same in both groups and that 2 implants in an All-on-2 implants treatment procedure offers comparable stability for supporting a complete fixed mandibular prosthesis in subject with maxillary complete denture when compared to placement of four implants as in All-on-4® procedure. Although the present study has established no significant difference, however more multicentered studies are newline newlinerequired with a longer follow up period to reach a consensus over 2 implants vs 4 implants supported mandible prosthesis. newline newline