CMS MICRO titanium cross-fit bone screw, 1.2mm diameter, 4mm length, grey anodized - Helmut Zepf (47.574.04) - Delynov

What is the Helmut Zepf CMS MICRO cross-slotted screw?

The CMS MICRO screw from Helmut Zepf is an osteosynthesis device designed specifically for bone fixation in oral surgery. Manufactured in titanium, this screw features a cross-slotted drive for stable insertion. It is distinguished by its 1.2mm diameter and 4mm length, dimensions adapted to restricted spaces and thin bone structures encountered in implantology. Its surface has undergone grey anodization, a surface treatment specific to the Helmut Zepf range to facilitate identification and optimize surface properties during temporary integration.

What are the clinical indications for this titanium screw?

This fixation screw is primarily indicated in guided bone regeneration (GBR) protocols and alveolar volume reconstruction. Dentists and implantologists use it to firmly maintain non-resorbable membranes, titanium meshes, or autogenous bone grafts during ridge augmentation procedures. Perfect immobilization of the graft or protective barrier is a sine qua non condition for successful osseointegration and the prevention of soft tissue invasion. Its small size of 4mm allows for precise use even in areas of low bone thickness.

What are the technical characteristics of reference 47.574.04?

Reference 47.574.04 corresponds to a technical screw from the CMS MICRO range developed by Helmut Zepf Medizintechnik GmbH. Its specifications include a thread diameter of 1.2mm and a total length under the head of 4mm. The screw head features a cross-slotted drive, ensuring efficient torque transmission and limiting the risk of instrument slippage during the manual screwing phase. The titanium composition guarantees excellent biocompatibility, essential for temporary implantable devices. Grey anodization allows for visual differentiation of this model within the surgical kit.

What are the contraindications for the use of this fixation device?

Although specific data are not listed, standard contraindications for this type of titanium fixation hardware include known allergies to titanium or its alloys. Clinically, use is contraindicated if the quality or residual bone volume is insufficient to ensure primary anchorage of the 4mm screw. Uncontrolled systemic pathologies affecting bone healing or an active infection at the surgical site also constitute major contraindications. It is the practitioner's responsibility to evaluate the benefit-risk ratio based on the patient's general health status and the stability of the recipient site.

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

The Helmut Zepf CMS MICRO screw is manufactured from titanium, a material that is not resorbable by the body. Unlike polymer devices that degrade by hydrolysis, this screw maintains its structural integrity throughout the healing phase. It must therefore generally be removed during a second surgical intervention, for example at the time of implant placement or aesthetic finishing, once the bone volume is stabilized. The practitioner must ensure that the screw is completely covered by soft tissue during the latency period to avoid any premature exposure that could lead to infection of the graft site.

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 surgical and dental instrumentation sector for the quality of its products. The 47.574.04 screw is designed according to rigorous manufacturing standards specific to implantable medical devices. Although the precise regulatory class and the notified body number for CE marking are not mentioned in the provided technical documentation, the product must be used in accordance with the manufacturer's instructions and current clinical protocols in oral surgery. Professionals are invited to refer to the instructions for use for details regarding sterilization and traceability.

State of the art

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