Fig. 4 Castroviejo 18cm

The Fig. 4 Castroviejo 18cm is manufactured from German-grade surgical stainless steel with a satin-finish passivated surface that resists corrosion throughout repeated clinical use. The instrument spans 18 cm in overall length with two crossed straight shafts joined at a central ball-joint pivot. Its defining feature is the wide trapezoidal open-loop measuring caliper head at the upper working end; broader than the Fig. 3 variant, which provides an expanded contact surface for stable tissue and bone engagement. A curved graduated base carries the 0–40 mm scale etched in 1 mm increments.

A knurled thumb-screw on the lateral shaft locks jaw separation once the target reading is secured, preventing any drift before documentation. This Castroviejo Caliper Str. 18cm withstands full autoclave sterilization at 134°C and accepts ultrasonic cleaning and chemical disinfection without surface degradation. The passivated finish blocks oxidation between sterilization cycles, and the instrument passes standard boil, performance, and shape quality-control checks before dispatch, confirming safe reuse across multiple procedures.

Oral surgeons and implantologists use the Fig. 4 Castroviejo 18cm during dental implant pre-surgical planning. After mucoperiosteal flap reflection, the surgeon places the open-loop working ends across the exposed alveolar crest. This implant bone gauge delivers a direct buccolingual ridge width reading on the graduated base scale, allowing the surgeon to verify available bone volume and finalize implant diameter selection before osteotomy preparation begins.

Surgical teams trust instruments that perform consistently without adjustment or compromise, and Leader Surgical builds its catalogue around exactly that principle. Every instrument sourced carries verified material grade, confirmed sterilization compatibility, and dimensional accuracy that holds across real clinical workflows, not just initial inspection.

What makes the Castroviejo 18cm unique?
Unlike standard ring-handled holders, it features a spring-loaded, pen-like handle for high dexterity and 180-degree rotation without heavy wrist movement. The 18cm (7″) length is specifically designed for better reach into deeper surgical sites.