To Determine Influence of Drill Shape on the Primary Stability of the Implant: An In Vitro Pilot Study

This study evaluated whether drill shape and bone preparation influences the primary stability of the implant using resonance frequency analysis and insertion torque values.

In this study, four most common, commercially available drill systems were used in this study. Bovine bone was chosen for the study. All the implants were chosen of the same dimension (3.5 mm ȕ 13 mm) to avoid bias and error. For convenience the study was divided into two parts. Part I of the study included performing osteotomy per manufacturer's instructions with a variability in the speed of the drilling at 300 rpm and 800 rpm, respectively. All the implants were placed at bone level, which was checked by taking radiographs. The primary stability of the implants of all the four different companies were measured using an ISQ machine (Penguin, Sweden). Part II of the study involved single drilling kit for the study. Sequential drilling protocol is selected for the second part of the study. All the four-implant system are placed using the same set of drill system. The implants are placed at 300 rpm. ISQ values are recorded using RFA machine (Penguin, Sweden) for each implant. IOPA was also recorded for the study.

The results were subjected to analysis.

The results of this study suggest that implant drill shape did not have any significant effect on the overall primary stability of the implant. However, in certain implants, due to their unique design, custom drilling kits might be more feasible to use.