An In Vivo Comparative Study between Primary Stability of Dental Implant in D3 and D4 Bone with different Implant Designs

Abstract

Purpose: The purpose of the study is to assess the difference in primary stability and insertional torque in D3 and D4 bone densities in relation to conical and tapered cylindrical conical implant designs. Implant designs, commonly available as conical tapered thread design presented a similar survival rate in D1 and D2 bone but questionable results were there in D3 and D4 bone. But while placing tapered cylindrical conical implants in D3, D4 bone presented better primary stability and insertional torque upto 40+ N with excellent stability. Material and Methods: (5-5) Patients simulating D3 and D4 bone as per cbct report were clinically selected. Group 1 with conical design and Group 2 with tapered cylindrical design, implant was placed using torque adjusting wrench. Osteotomy site was prepared as per drilling protocol for selected diameter and length of implant used. After achieving different primary stability in both groups torque values were recorded even for reverse rotational test respectively. Results: An intergroup comparison revealed difference in torque values via placing implants with conical and tapered cylindrical designs in same sites in maxillary arch in same quadrants respectively. Conclusion: Tapered cylindrical design exhibited better higher insertional torque and better stability as compared to conical designs. Therefore, before placement of dental implant in D3 and D4 bone one should always consider the design of the implant being selected when the placement is indicated in maxillary arch.