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Device Synergies White Paper on RESYNERGX Drill Technology

The use of drilling to remove bone prior to the placement of metal or polymeric fixation devices is a common procedure in most surgical and dental procedures.

Accurate positioning of drill holes of maintain appropriate dimensions with minimal surgical insult to the bone and surrounding soft tissue is a desire for all surgeons for their patients.

Excessive thermal insult to bone tissue may result in destruction or inactivation of the matrix bound proteins involved in bone healing (bone morphogenetic proteins, BMPs).

A novel 3-fluted drill, C-Bit, for use in drilling cortical and cancelous bone has been designed by Cingular Orthopaedics Pty Ltd.

The design claims for C-Bit include a smoother torque load transfer to the surgeon’s hand, more accurate drilling, avoiding entry slippage and decreased thermal and mechanical insult to the bone and surrounding soft tissues. In addition, the C-Bit drill claims to be more competent in drilling to achieve the equivalent results with other drill bit designs.

A Biomechanical Analysis of C-Bit Designs

To date, all surgical drill bit technologies for either soft or hard tissue have been based on classic machine type designs. Whilst there have been differences in geometries and the number of cutting flutes, to date all spiral flute drills have incorporated standard right-handed helixes.


A right-handed drill bit, by design, removes material, often referred to swarf as the drill bit performs its function.