Introduction- Insufficient retention and stability of the prosthesis, decreased chewing efficiency, and discomfort during mastication is considered as main problem associated with conventional complete denture. In order to overcome these problems implant overdenture came into existence. This study was designed to determine a better as well as economical treatment option for edentulous mandible in north Indian population. Material and method- The study was designed to evaluate the retention force among different dental prosthetic options. 10 patients with conventional denture, 10 with single implant supported overdenture and 10 patients with two implant supported overdenture were selected. A wire loop (0.9mm in diameter) was placed on the geometrical center of the polished lingual surface to which the pull end of the force meter was attached. A vertical upward force was applied to dislodge the denture while the patient was sitting in an upright position. This force was measured in Newton and recorded as the denture’s retention. Result- The mean value of retention force among all these three treatment modalities was measured and tabulated for both right and left side, ANOVA and post hoc Tukey HSD test was applied to evaluate and compare the retention force among all these three treatment modality. The mean retention value for conventional complete denture, single implant supported overdenture and two implant supported overdenture was 4.38±0.113N, 8.62±0.141N and 28.20±0.424N. Conclusion-Two implant supported overdenture was considered as minimal requirement for implant supported overdenture, but single implant supported overdenture also provides a significantly higher retention than the conventional complete denture.
Keywords: Retention, overdenture, implant.