Bone expansion screw, 3.0 x 4.5 mm - Helmut Zepf (47.565.09) - Delynov

What is the Helmut Zepf 3.0 x 4.5 mm bone expansion screw?

The bone expansion screw, referenced under code 47.565.09 by the manufacturer Helmut Zepf, is a precision mechanical device used in oral surgery. It features specific dimensions of 3.0 mm by 4.5 mm, designed to integrate into alveolar distraction protocols. This device belongs to the category of Guided Bone Regeneration (GBR) instruments. Its structure is developed to allow mechanical action on the bone walls, thus facilitating the progressive widening of the ridge without compromising the integrity of the surrounding tissues. As a surgical bone expander, this tool is essential for practitioners seeking to optimize the available bone volume before or during implant placement.

What are the clinical indications for this dental bone expander?

The use of this distraction screw is primarily indicated in cases of horizontal atrophy of the alveolar ridge. In implant and periodontal surgery, it allows for the treatment of narrow ridges where the initial bone volume is insufficient to stabilize a standard diameter implant. The Helmut Zepf dental bone expander is used to perform controlled bone distraction, promoting the formation of new bone in the space created by the separation of the cortical plates. This technique is an alternative or a complement to traditional bone grafts, often allowing for a reduction in overall treatment time by preparing the site in a minimally invasive manner.

What are the technical characteristics of the 47.565.09 screw?

The Helmut Zepf bone expansion screw is distinguished by its precise measurements of 3.0 x 4.5 mm. These dimensions are critical to ensure a distraction force distributed homogeneously over the treated area. The threading and screw head design are optimized to provide a stable grip for activation instruments, thus guaranteeing millimeter-level control during expansion. This alveolar distraction device is manufactured with the technical rigor characteristic of Helmut Zepf Medizintechnik GmbH, ensuring the mechanical reliability essential during the stresses exerted during the surgical expansion phase.

What are the contraindications for the use of an alveolar distraction screw?

Although specific manufacturer data does not list exhaustive contraindications in this document, the use of a dental distraction screw follows the general principles of oral surgery. Contraindications generally include insufficient bone density (very porous Type IV bone) not allowing for screw anchorage, or an active infection at the surgical site. Uncontrolled systemic pathologies affecting bone healing, such as severe diabetes or osteoporosis treated with certain bisphosphonates, may also limit the use of this type of dental surgical bone expander. It is the practitioner's responsibility to evaluate the benefit/risk ratio according to the patient's health status.

What are the precautions for use for this non-resorbable device?

The Helmut Zepf bone expansion screw is a non-resorbable device that must be removed once the distraction or stabilization objective is achieved. The practitioner must ensure compliance with a precise, often progressive, activation protocol to avoid any fracture of the bone cortex. Regular clinical monitoring is necessary to check for the absence of screw exposure or inflammation of the peripheral soft tissues. After the bone consolidation phase, removal of the device must be performed with appropriate instrumentation so as not to damage the newly formed bone. Handling must be sterile and in accordance with current surgical asepsis protocols.

Who is the manufacturer and what standards are respected?

This device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer in the field of high-precision dental and surgical instrumentation. Although the specific regulatory class and CE marking are not detailed in the current technical sheet, Helmut Zepf products are developed according to rigorous industrial quality standards. For any precise information regarding compliance with the European Medical Device Regulation (MDR) or to consult certificates of conformity, it is imperative to refer to the instructions for use provided by the manufacturer or to contact the Delynov technical service directly.

State of the art

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