Stainless steel cross-head screw, Ø 1mm, length 6mm, with identification plug - Helmut Zepf (47.573.06S) - Delynov

What is the Helmut Zepf 47.573.06S cross-head screw?

The cross-head screw referenced 47.573.06S is a miniature osteosynthesis device designed by the manufacturer Helmut Zepf Medizintechnik GmbH. Manufactured in stainless steel, this screw has a diameter of 1mm and a length of 6mm. It is specifically developed for the needs of oral surgery and guided bone regeneration (GBR). Its structure includes a cross-recess head allowing precise and secure insertion using a suitable screwdriver. This device is completed by an identification plug facilitating its location and handling within the surgical tray. As a rigid fixation element, it ensures the maintenance of graft materials or protective barriers during the initial bone healing phase.

What are the clinical indications for this stainless steel screw?

This 1mm diameter screw is primarily indicated in pre-implant and periodontal bone reconstruction procedures. In oral surgery, it is used for the fixation of autologous bone blocks or bone substitutes during onlay grafts. It is also used for the immobilization of non-resorbable or resorbable membranes within the framework of guided bone regeneration (GBR). Its 6mm length allows sufficient anchorage in the cortical bone while limiting bulk in areas where tissue volume is reduced. The use of this Helmut Zepf material guarantees primary stability essential for the osseointegration of grafts, avoiding micromovements that could compromise the formation of new bone tissue.

What are the technical characteristics of the 47.573.06S screw?

The technical specifications of this Helmut Zepf device are based on precise dimensions: a shaft diameter of 1mm and a total length under the head of 6mm. The material used is medical grade stainless steel, selected for its mechanical properties of resistance to torsion and breakage during manual insertion. The head recess is of the cross-head type, offering superior directional stability when engaging the placement instrument. The product integrates a specific identification plug, which serves as a visual and technical reference for the practitioner during material preparation. These characteristics allow fluid integration into implant surgery protocols requiring fine and robust fixation.

What are the contraindications for the use of this device?

Contraindications to the use of the Helmut Zepf stainless steel screw mainly include known hypersensitivities or allergies to stainless steel components. On a clinical level, use is discouraged in sites presenting an active infection or insufficient vascularization that could compromise healing. It must not be used if the residual bone volume is insufficient to guarantee stable anchorage of the 6mm screw, or if the bone quality (highly cancellous type IV) does not allow adequate mechanical hold. It is the surgeon's responsibility to evaluate the usual systemic contraindications related to oral surgery, such as uncontrolled coagulation disorders or severe metabolic bone pathologies.

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

The stainless steel constituting this Helmut Zepf screw is a non-resorbable material. This means that the device remains in place permanently unless a secondary intervention is planned for its removal. In guided bone regeneration surgery, screw removal generally occurs at the time of implant placement or after complete consolidation of the graft, often after 4 to 9 months depending on the clinical protocol. The practitioner must ensure that the screw head is correctly covered by soft tissue to avoid any post-operative exposure that could lead to bacterial contamination. Careful handling with dedicated instruments is required to avoid damaging the cross-recess during placement or removal.

Who is the manufacturer and what are the recommendations for use?

The device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer in the field of high-precision dental surgery instrumentation and devices. To guarantee the safety and efficacy of the product, it is imperative to refer to the instructions for use provided by Helmut Zepf regarding cleaning, sterilization (if the product is delivered non-sterile), and placement protocols. The use of a screwdriver whose tip is perfectly compatible with the 1mm cross-recess is crucial to prevent any risk of stripping the screw head. Compliance with the drilling diameters recommended by the manufacturer is also essential to ensure the primary stability of the device without inducing excessive stress on the surrounding bone tissue.

State of the art

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