Internal Diameter 6.0 MM Trepan. - Helmut Zepf (08.910.08F)

What is the Helmut Zepf 08.910.08F trephine?

The Helmut Zepf trephine (reference 08.910.08F) is a precision surgical rotary instrument designed for the circular cutting of bone tissue. This bone harvesting trephine features an internal diameter of 6.0 mm, allowing for the creation of perfectly calibrated cylindrical bone blocks. Manufactured by Helmut Zepf Medizintechnik GmbH, this Class IIa medical device is intended to be mounted on a surgical contra-angle. Its structure is optimized to guarantee a clean cut while allowing the recovery of a high-quality autologous bone graft, ready to be used for volume augmentations or further processed in a bone mill according to the clinical needs of the reconstruction.

What are the clinical indications for this 6mm trephine drill?

This bone harvesting drill is primarily indicated in oral and implant surgery for two major applications. Firstly, it is used to obtain cylindrical bone blocks from the patient's jaw, providing autologous graft material to fill bone defects or reinforce implant sites. Secondly, this instrument is indicated for the explantation of already integrated dental implants. In this context, the practitioner chooses the diameter of the trephine based on the dimensions of the implant to be removed in order to perform a minimal peripheral osteotomy facilitating the removal of the device without excessively damaging the surrounding structures.

What are the technical and handling characteristics?

The Helmut Zepf 6.0 mm trephine must be attached to a contra-angle. For obtaining bone blocks, the motor must be set to a speed between 800 rpm and its maximum authorized speed. For explantation procedures, the recommended speed is between 800 rpm and 1000 rpm maximum. The drilling or milling process must be carried out using continuous in-and-out movements (pumping movement) to avoid thermal overheating. Abundant irrigation with sterile physiological saline solution is imperative, whether manually or via the internal irrigation system of the contra-angle. It is crucial not to stop the motor while the trephine is inserted in the surgical cavity to avoid any blockage or breakage of the instrument.

What are the contraindications for the use of this instrument?

The use of this trephine is strictly reserved for healthcare professionals qualified in oral surgery and implantology. Although the manufacturer does not list specific systemic contraindications in the provided technical documentation, general contraindications to bone surgery and implantology apply. The practitioner must evaluate bone density and the proximity of critical anatomical structures (inferior alveolar nerve, maxillary sinus) before any intervention. Excessive pressure during drilling must be avoided to prevent the risk of thermal necrosis or instrument fracture. Use is prohibited if the conditions of sterility or maintenance of the instrument are not guaranteed.

What are the precautions for use and removal?

When using the Helmut Zepf trephine, particular attention must be paid to the management of the pressure exerted. Excessive pressure can compromise the precision of the cut or damage the bone tissue. During drilling, it is essential to keep the motor rotating during insertion and especially during removal from the surgical cavity; stopping the rotation prematurely can lead to the trephine jamming or breaking. Physiological rinsing must be constant to evacuate bone debris and cool the cutting surfaces. After the procedure, the number of achievable processing cycles depends on the observed wear, as there is no maximum limit defined by the manufacturer, requiring a rigorous visual inspection by the professional.

Who is the manufacturer and what standards are respected?

This medical device is manufactured by Helmut Zepf Medizintechnik GmbH, located in Seitingen-Oberflacht, Germany. It is a Class IIa instrument, compliant with European regulatory requirements for surgical-type invasive medical devices. As a recognized manufacturer in high-precision dental instrumentation, Helmut Zepf guarantees a rigorous manufacturing process. The product is identified by technical reference 08.910.08F. Professionals must refer to the manufacturer's instructions for cleaning, disinfection, and sterilization protocols to maintain the cutting performance and biological safety of the instrument during its successive uses in the office or hospital environment.

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