"Simpli5y" a noval concept for fixed rehabilitation of completely edentulous maxillary and mandibular edentulous arches: A 3-year randomized clinical trial, supported by a numerical analysis.

BACKGROUND AND PURPOSE: To evaluate the clinical outcome of "simpli5y" concept where in 3 and 2 implant placed cross arch in maxilla and in mandible respectively, restored with screw retained prosthesis.

MATERIALS AND METHODS: Total of 30 patients were randomized, with 15 in group1 with an average of 45 Ncm insertion torque with delayed loading and 15 in group 2 with above 65 Ncm inertion torque with immediate loading with equal number of male and female in each group following parallel design with 3 implants in maxillary and 2 implants in mandibular arch placed which was supported by a 3Dimensional finite analysis comparing the stress dissipation around implants of this concept-"Simplif5y" with All-on-4 concept.

RESULTS: Von Mises strain recorded in the bone in the maxillary and mandibular arch models were higher in All-on-four than that in the "simpli5y", which was vice-versa in the framework. Three-year post loading marginal peri implant bone loss for the group 1 was less than group 2.

CONCLUSIONS: These results, suggest that in both delayed loading and immediate loading protocol that cross arch prostheses can be successfully supported by 3 and 2 implants in maxillary and mandibular arch respectively-"Simpli5y" concept of full mouth restoration.