Titanium cross-fit screw for osteosynthesis, Ø 1.5 mm, length 6 mm, blue anodized - Helmut Zepf (47.575.06) - Delynov

What is the Helmut Zepf 47.575.06 cruciform screw?

The Helmut Zepf cruciform screw, reference 47.575.06, is a metallic anchoring device specifically developed for oral surgery protocols. Manufactured in titanium, it features a diameter of 1.5 mm and a length of 6 mm. Its structure is characterized by a cruciform drive head allowing for precise insertion and stable mechanical holding. The blue anodization of the surface is not merely aesthetic; it allows the practitioner to quickly distinguish the dimensions of the screw within an osteosynthesis kit and improves visual contrast during intervention in a wet surgical site.

What are the clinical indications for this osteosynthesis screw?

This 1 5mm osteosynthesis screw is mainly indicated in procedures for reconstructing maxillary and mandibular bone volumes. It is used by implantologists and oral surgeons for the fixation of bone block grafts (shell technique or Khoury technique) or for maintaining non-resorbable titanium-reinforced membranes. Its length of 6 mm is suitable for areas where the thickness of the recipient bone or the graft requires firm anchoring without risking damage to sensitive underlying anatomical structures. It actively participates in the success of guided bone regeneration (GBR) by preventing any micromovement of the filling material.

What are the technical characteristics of this device?

The model 47.575.06 produced by Helmut Zepf displays rigorous specifications to meet the requirements of dental osteosynthesis. The 1.5 mm diameter offers an ideal compromise between fracture resistance and low bulk, thus limiting trauma during initial drilling. The total length of 6 mm allows for bicortical engagement or deep monocortical fixation depending on bone density. The choice of titanium as the base material guarantees excellent biocompatibility and corrosion resistance. The cruciform drive of the head ensures a stable connection with the appropriate screwdriver, reducing the risks of slipping during loading.

What are the contraindications for the use of this titanium screw?

Contraindications for the use of the Helmut Zepf screw mainly include known allergies or hypersensitivities to titanium or its alloys. Clinically, use is discouraged in areas presenting an active untreated infection or insufficient vascularization of the recipient site, which would compromise bone healing. Patients suffering from severe bone metabolic disorders, uncontrolled systemic pathologies, or those who have undergone recent irradiation of the jaws may present increased risks of osteosynthesis failure. It is the surgeon's responsibility to evaluate the benefit-risk ratio based on the patient's general health status.

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

Being composed of titanium, this screw is a non-resorbable device. It is designed to remain in place throughout the duration of graft incorporation, generally several months. Depending on the protocol chosen by the practitioner, the screw can be left permanently if it does not interfere with subsequent implant placement, or be removed during a second surgical stage. Particular attention must be paid during handling to avoid any contamination of the blue anodized surface before insertion. The practitioner must ensure that the screw head is perfectly buried or covered to avoid any soft tissue dehiscence.

Who is the manufacturer and what standards are respected?

The screw is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer in the high-precision surgical instrumentation sector based in Germany. The Helmut Zepf brand is synonymous with industrial quality and rigor in the selection of medical materials. Although specific details of the CE marking or regulatory class are not explicitly mentioned in this technical sheet, this device is produced according to the manufacturing standards for medical devices intended for human implantation. It is imperative to refer to the instructions for use and the manufacturer's labeling to verify the sterilization protocols and certifications in effect at the time of purchase.

State of the art

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