Grey anodised titanium cross-fit surgical screw, Ø 1.2 mm, length 6 mm - Helmut Zepf (47.574.06) - Delynov

What is the Helmut Zepf 47.574.06 cross-head screw?

The Helmut Zepf screw (reference 47.574.06) is a miniature osteosynthesis device specifically designed for oral and maxillofacial surgery. Manufactured from titanium, it features a grey anodized finish. Its structure is defined by a diameter of 1.2 mm and a total length of 6 mm. It is equipped with a cross-head drive, allowing for efficient torque transmission during manual or motorized insertion. This component is a central element of fixation systems for guided bone regeneration (GBR), offering a robust solution for maintaining filling materials or autologous grafts in a stable position against the recipient site.

What are the clinical indications for this titanium screw?

This Helmut Zepf screw is primarily indicated in pre-implant bone reconstruction protocols. In oral surgery, it is used to fix bone blocks (autotransplantations) or to stabilize non-resorbable membranes during GBR procedures. Its 1.2 mm diameter is particularly suitable for areas where available space is restricted or when the thinness of the alveolar ridge requires the use of low-profile hardware. It guarantees the absence of graft micromovements, a sine qua non condition for optimal revascularization and successful osseointegration of the graft material. It is used by implantologists and oral surgeons to treat horizontal or vertical bone defects.

What are the technical characteristics of the 47.574.06 screw?

The technical specifications of this Helmut Zepf device include a body diameter of 1.2 mm and an under-head length of 6 mm. The choice of titanium as the base material ensures high biocompatibility and mechanical resistance adapted to the stresses of the oral cavity. The grey anodization is not only aesthetic; it allows for rapid identification within a surgical kit organized by color codes. The cross-head screw head is designed to fit precisely with the corresponding screwdrivers from the Helmut Zepf Medizintechnik GmbH range, limiting the risk of slipping during initial driving into the cortical bone. The thread geometry is optimized for immediate primary grip in the bone, even in cases of low bone density.

What are the contraindications for the use of this device?

Although specific contraindications are not detailed in the source data, the use of titanium screws is generally proscribed in patients with a known hypersensitivity or allergy to titanium or its alloys. Clinically, use is discouraged in sites with active infection, insufficient vascularization, or insufficient residual bone to ensure primary stability of the screw. Uncontrolled systemic pathologies affecting bone metabolism or healing may also constitute relative contraindications. It is the practitioner's responsibility to evaluate the benefit/risk ratio based on the patient's general health status and the quality of the recipient site before any intervention.

What precautions are related to the non-resorbable nature of titanium?

As the Helmut Zepf screw is manufactured from titanium, it is non-resorbable. This means it remains permanently in place unless a second surgical procedure is scheduled for its removal. Usually, within the framework of a bone graft, the screw is removed during the implant placement phase, once the bone volume is stabilized and consolidated. The practitioner must ensure that the screw head is correctly buried or covered by soft tissue to avoid post-operative exposure, which could compromise the graft. Particular attention must be paid during removal not to damage the surrounding newly formed bone.

Who is the manufacturer and what standards are met?

The official manufacturer of this device is Helmut Zepf Medizintechnik GmbH, a recognized company in the high-precision surgical and dental instrumentation sector. Although specific certifications (such as regulatory class or CE marking) are not explicitly mentioned in the current technical sheet, Helmut Zepf products are developed according to rigorous manufacturing standards specific to medical devices. It is imperative for the user to systematically refer to the instructions for use and labeling provided with the product to verify compliance information, sterilization instructions, and safety protocols in effect at the time of use.

State of the art

Guided bone regeneration (GBR) in implantology relies on membrane fixation quality.