Inner Diameter of 8.0 mm Trephine - Helmut Zepf (08.910.10S) - Delynov

What is the 8.0 mm Helmut Zepf trephine?

The Helmut Zepf trephine (reference 08.910.10S) is a rotary surgical instrument designed for the circular cutting of hard tissues. Featuring an internal diameter of 8.0 mm, this tool is specifically developed for the creation of cylindrical bone blocks. Manufactured by Helmut Zepf Medizintechnik GmbH, this device belongs to the category of consumables for implant and oral surgery. Its structure allows for precise penetration into the maxillary or mandibular bone to extract bone cores intended for grafting or subsequent processing in a bone mill. It is a robust instrument intended for strict professional use in a surgical environment.

What are the clinical indications?

Clinical indications for this Helmut Zepf trephine primarily include the harvesting of cylindrical bone blocks from the jaw. These samples can be used as-is for grafting procedures or processed via a bone mill for bone augmentations. Another major indication is the explantation of already integrated dental implants, where the trephine allows the release of the implant by resecting a thin layer of peripheral bone. The choice of the 8.0 mm diameter must be rigorously correlated to the size of the desired bone tissue block or the diameter of the implant to be removed to ensure the success of the intervention.

What are the technical characteristics?

This trephine is characterized by an internal diameter of 8.0 mm, identified under the reference code 08.910.10S. For its use, it must be attached to a suitable contra-angle handpiece. The manufacturer recommends a specific motor setting: for obtaining bone blocks, the speed must be between 800 rpm and the maximum authorized by the device. For implant explantation, the recommended speed is between 800 rpm and 1000 rpm maximum. Motor activation must precede insertion into the surgical cavity to avoid any blockage or breakage of the instrument. The drilling process is carried out using continuous in-and-out movements.

What are the contraindications for use?

Although the technical text does not list specific pathological contraindications, the use of this device is strictly reserved for qualified healthcare professionals. It is contraindicated to use the instrument without abundant and continuous irrigation of sterile physiological saline solution, either manually or via the contra-angle rinsing system. Excessive pressure during drilling is also prohibited to avoid any thermal overheating of the tissues or damage to the instrument. Finally, the motor must never be stopped while the trephine is inserted in the surgical cavity, as this can prevent the removal of the tool or cause it to break.

What are the precautions for use and processing?

Maintaining sterile physiological saline irrigation is crucial throughout the drilling and milling process. The practitioner must perform pumping movements (insertion/extraction) to facilitate the evacuation of debris and cooling. Regarding durability, the manufacturer Helmut Zepf specifies that there is no defined maximum limit for achievable processing cycles; the number of cycles depends on the condition of the instrument after each intervention. A visual inspection before use is necessary to ensure the integrity of the cutting edges. Stopping the motor inside the bone is a critical handling error that can lead to the breakage of the trephine.

Who is the manufacturer and what standards are met?

The trephine is manufactured by Helmut Zepf Medizintechnik GmbH, headquartered in Seitingen-Oberflacht, Germany. This medical device is classified as Class IIa according to current regulations. As a recognized manufacturer in the field of dental instrumentation, Helmut Zepf guarantees the compliance of its products with safety and performance requirements for oral surgery. Handling protocols, particularly rotation speeds and rinsing methods, must be scrupulously respected by dental surgeons and implantologists to ensure patient safety and instrument longevity.

State of the art

Surgical medical consumables play a decisive role in operative safety.