Titanium cross-head screw for emergency fixation, diameter 1.9 mm, length 13 mm - Helmut Zepf (47.575.43) - Delynov

What is the Helmut Zepf titanium cross-recess screw?

The Helmut Zepf titanium cross-recess screw (reference 47.575.43) is an emergency fixation device specifically designed for oral and implant surgery. Manufactured by Helmut Zepf Medizintechnik GmbH, it features a robust titanium structure, a material recognized for its biocompatibility and mechanical strength in physiological environments. This model is distinguished by a diameter of 1.9 mm and a total length of 13 mm, offering a holding solution for cases requiring deep bone purchase or the crossing of voluminous structures. Its cross-recess drive allows for stable insertion with the appropriate placement instruments, limiting the risk of slipping during screwing into mineralized tissues.

What are the clinical indications for this titanium surgery screw?

This titanium surgery screw is primarily indicated in guided bone regeneration (GBR) and alveolar reconstruction protocols. In implant surgery, it is used to fix autologous bone blocks or bone substitutes during onlay or inlay grafts. Its 13 mm length is particularly useful for stabilizing thick grafts or ensuring anchorage in areas where the cortex is distant. It can also be used for maintaining non-resorbable membranes or titanium meshes, guaranteeing the immobility of the protective device during the bone healing phase, a sine qua non condition for the successful osseointegration of the filling material.

What are the technical characteristics of reference 47.575.43?

The Helmut Zepf titanium fixation screw reference 47.575.43 possesses precise technical specifications to meet the requirements of fine osteosynthesis. It features a body diameter of 1.9 mm, which gives it excellent shear resistance while remaining compatible with restricted surgical sites. Its 13 mm length allows for deep penetration for bicortical anchorage if necessary. The screw head is machined with a cross-recess drive, optimizing tightening torque and facilitating handling with screwdrivers from the Helmut Zepf range. The titanium used ensures biological neutrality, minimizing peri-implant inflammatory reactions during prolonged maintenance of the device in the body.

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

The use of this titanium osteosynthesis screw is contraindicated in patients with a known hypersensitivity or allergy to titanium or its alloys. Clinically, it should not be used in areas with active infection or insufficient vascularization, which would compromise healing. Insufficient bone density at the recipient site may also constitute a contraindication, as it would not allow for the primary stability required for graft fixation. It is the practitioner's responsibility to evaluate the patient's general health status, including bone metabolism disorders or uncontrolled systemic pathologies, before proceeding with the placement of this osteosynthesis material.

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

Being composed of titanium, this screw is non-resorbable by the body. It is designed to remain in place throughout the duration of bone consolidation, generally several months depending on the chosen clinical protocol. Once regeneration is achieved, the practitioner must decide, based on the treatment plan, whether to leave the screw in place or proceed with its removal during a second intervention, for example at the time of implant placement. Precautions include total and tension-free mucosal coverage to avoid any exposure of the screw head, which could lead to bacterial contamination and graft failure. Regular radiographic follow-up is advised to check the stability of the device.

Who is the manufacturer and what standards are respected?

The official manufacturer of this device is Helmut Zepf Medizintechnik GmbH, a company recognized in the field of high-precision surgical and dental instrumentation. As a product intended for osteosynthesis, this screw is subject to rigorous manufacturing processes guaranteeing the quality of the alloy and the precision of the dimensions. To obtain specific information on the regulatory class, CE marking, or ISO certifications in force for this reference 47.575.43, it is imperative to refer to the product labeling and the instructions for use provided by Helmut Zepf. Compliance with the sterilization and handling protocols recommended by the manufacturer is essential to guarantee patient safety and clinical efficacy.

State of the art

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