Foredom Inverted Cone 3/32 Dia X 1/8 Lg

Description:

Inverted Cone bur (3/32" Diameter x 1/8" Length) is a specialized dental laboratory instrument used for producing controlled undercuts, retention areas, and internal modifications in various restorative materials. Its inverted cylindrical profile, wider at the top and narrower at the shaft, enables the bur to remove material in a way that creates mechanical retention�an essential feature in many prosthetic applications. This bur is commonly used when adapting acrylic denture bases, forming retention spaces for composite additions, modifying metal frameworks, adjusting clasp seats, or preparing recesses for precision attachments. The 3/32" diameter size provides fine yet effective cutting capability, making it ideal for delicate work where too much reduction could compromise structural integrity. Its short 1/8" length enhances stability and prevents over-penetration, allowing technicians to maintain strict control during internal shaping. This is particularly valuable when working in deep but narrow spaces, such as the internal surface of partial denture frameworks, housing areas for attachments, or recesses in occlusal splints. Manufactured from durable tungsten carbide or diamond-coated materials, the Inverted Cone bur maintains its shape and cutting sharpness during repetitive use. It produces clean, precise cuts with minimal vibration, helping reduce material fractures, chattering, or unwanted widening of the prepared space. In dental laboratories, the Inverted Cone 3/32" x 1/8" is a go-to instrument for achieving accurate retention geometry, fine internal detailing, and controlled material removal. Its specialized shape ensures technicians can reliably create structural features that enhance fit, stability, and long-term performance of dental prosthetics.