Exploring the Osseodensification Burs Kit and its Impact on Implantology

Osseodensification is a biomechanical bone osteotomy preparation technique that uses specially designed burs (Mehfoozinstruments Osseodensification Burs Kit) that preserve and compact autograft alveolar bone in the osteotomy preparation site. Osseodensification Burs Kit has been reported to enhance bone density and bone-to-implant contact and also to increase implant insertion torque. IT measured at the time of implant placement is associated with primary mechanical stability. A failure to achieve primary stability results in implant micro-motion yielding lower implant success and survival rates. Low-density alveolar bone is associated with the lowest implant success/survival rates when implants are placed with conventional osteotomy preparation techniques. This study examined the effects of OD versus conventional osteotomy drilling technique on initial insertion torque and removal torque of dental implants placed in low-density human cadaveric bone.

Methods:

Eight human cadaveric edentulous jaws were block-sectioned and imaged with CBCT to measure their bone density. OD osteotomies (N=7) were prepared (1200 RPM/water irrigation) using the Osseodensification Burs Kit “cut-cut/densify-densify” protocol. Conventional osteotomies (N=7) were prepared (1200 RPM/water irrigation) using a Taper Kit for the 4.5x10mm Hiossen ET-III dental implant (Mehfooz Instruments). Fourteen implants were randomly placed into osteotomies using the Mehfooz Instruments wrench and insertion torque values were measured with an analog torque wrench. One sample of Osseodensification Burs Kit for each group had removal torque values measured. Results were analyzed using a Student’s T-test with α=0.05.

Osseodensification Burs Kit Impact on Implant

It is difficult to achieve good primary stability of dental implants in soft bone, such as that in the posterior maxillae. Osseodensification burs, working in a non-subtractive fashion, condense the implant osteotomy bone in the lateral direction and increase in the bone implant contact. Also, dental implants with deeper threads, and decreased thread pitch can increase initial bone implant anchorage.

Results:

One control sample was removed from the study due to excess cortical bone. Raw initial insertion and removal torque values for implants placed into Osseodensification Burs Kit sites were higher than values for implants placed into conventionally prepared osteotomies, although the difference did not rise to the level of significance. Further samples and analyses are underway in our laboratories.

Conclusions:

Use of the Osseodensification Burs Kit technique may provide greater enhancement of initial stability for implant placement in low density human alveolar bone.