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Controladores para prótesis

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FAQs

Experienced clinicians should match drivers precisely to the implant system and prosthetic components in use. Key factors include: - Interface compatibility: Confirm that the driver matches the internal geometry of the abutment screw head (e.g., hex, star/Torx, or SCS). Mismatched interfaces can lead to stripping or torque inaccuracies. - Length and access: Select driver lengths (short, standard, long) based on prosthetic depth and intraoral access, especially in posterior or limited interocclusal space cases. - Driver retention: Magnetic or friction-fit drivers help secure small screws during insertion. This is particularly useful when working in deep or angled canals. - Material and sterilization: High-quality stainless steel or titanium drivers maintain tip integrity over repeated sterilization cycles. Clinical Tip: Use system-specific torque drivers whenever possible for final tightening. Avoid applying excessive torque manually, as it can strip the screw head or damage internal connections.

Accurate torque application is essential to prevent mechanical complications like screw loosening or fracture. Best practices include: - Use of calibrated torque wrenches: Always use a mechanical or digital torque wrench provided by or compatible with the implant system. Manual “feel” is not reliable for consistent torque delivery. - Follow manufacturer-recommended torque values: These typically range from 15–35 Ncm depending on the system and screw type. - Re-tightening protocols: For critical load-bearing prosthetics, retighten screws after 10–15 minutes post-initial torque to compensate for settling. Practical Advice: Label and calibrate torque devices regularly. In multi-unit cases, always follow a diagonal or cross-pattern torque sequence to ensure uniform seating.

Driver wear can lead to poor screw engagement, rounding of interfaces, or even intraoral complications. Causes and prevention include: - Over-torqueing: Applying force beyond the driver’s specification can deform tips—use a torque-limiting wrench. - Multiple sterilization cycles: Most drivers have a lifespan of 50–100 cycles. Autoclave stress can dull or warp tips over time. - Improper use: Using a driver across incompatible systems can degrade both the driver and screw. Clinical Tip: Inspect drivers routinely under magnification. Replace at the first signs of wear, especially for conical or star-type interfaces where tip integrity is critical.

Advanced prosthetic scenarios demand specialized driver design and technique: - Full-arch restorations: Require long drivers and stable engagement to access deep or angled channels in multi-unit abutments. - Angulated screw channels (ASC): Require dedicated angulated drivers (usually 20°–30°) with pivoting heads or flexible shafts to maintain torque integrity despite non-axial engagement. - Cross-platform systems: In hybrid prostheses with different implant brands, clinicians must carry multiple drivers or use universal kits that offer verified compatibility. Practical Advice: Maintain an organized, labeled driver kit. In surgeries or restorations involving multiple implant platforms, pre-plan and verify driver availability during lab communication and prosthetic planning.

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