Sharpening Stone India Number 309 Fine Sharpening - Hu-Friedy - Delynov

What is the Hu-Friedy India #309 sharpening stone?

The India #309 sharpening stone, manufactured by Hu-Friedy Mfg. Co., LLC, is a maintenance device designed for the care of sharp instruments used in dental surgery and implantology practices. This specific model is identified as a fine sharpening stone, offering a texture adapted to restore a precise edge to instruments without removing an excessive amount of metal. It belongs to the category of technical consumables (CONSO) and is part of the rigorous maintenance protocol for reusable medical devices. Hu-Friedy, a recognized manufacturer in the sector, ensures the design of this tool to meet the requirements of practitioners wishing to preserve the integrity of their manual instrumentation over the long term.

What are the clinical indications for this sharpening stone?

The use of the India #309 sharpening stone is indicated for the maintenance of periodontal and surgical instruments. In clinical practice, scaler sharpening is essential to guarantee the efficiency of the gesture during root planing or subgingival scaling. A dull instrument requires greater pressure, which can compromise the precision of the surgical gesture. This stone allows for the rectification of the bevel of curettes and scalers, thus ensuring effective removal of calculus and necrotic tissue. It is particularly recommended for finishing after coarse sharpening or for regular maintenance aimed at maintaining an optimal cutting edge between two interventions.

What are the technical characteristics of the India #309 stone?

The Hu-Friedy India #309 sharpening stone is distinguished by its specific grit intended for fine sharpening. Unlike coarse-grit stones used to reshape a damaged blade, this stone is calibrated for finishing and polishing the cutting edge. Its physical properties allow for controlled abrasion of the stainless steel of the instruments. It is designed to be used with an appropriate sharpening oil to limit heating and clogging of the stone's pores by metallic residues. Its morphology facilitates a stable grip, allowing the practitioner or assistant to respect the original sharpening angles defined by Hu-Friedy for each type of instrument.

What are the contraindications for the use of this device?

According to the information provided by the manufacturer Hu-Friedy, the use of this device is strictly reserved for qualified healthcare professionals. There are no direct clinical contraindications related to the patient, as the stone does not come into contact with biological tissues. However, inappropriate use, such as an incorrect sharpening angle, can permanently alter the geometry of the instrument, making it unfit for clinical use. It is imperative not to use the stone on instruments whose specific coating does not allow for manual sharpening (such as certain instruments with titanium or diamond coatings not intended to be sharpened). The absence of adequate lubrication during the process can also reduce the efficiency of the stone.

What are the maintenance and durability precautions?

Although the India #309 sharpening stone is not a resorbable device, its durability depends on compliance with cleaning and lubrication protocols. After each scaler sharpening session, the stone must be cleaned to remove steel particles and oil deposits. Although classified as Class I, it requires particular attention to avoid any cross-contamination if handled in the treatment area. It is recommended to scrupulously follow the Hu-Friedy manufacturer's instructions for use for cleaning and, if applicable, sterilization, in order to maintain the abrasive properties of the fine grit. A stone saturated with residues loses its effectiveness and can scratch instruments instead of sharpening them.

Who is the manufacturer and what standards are respected?

The India #309 sharpening stone is manufactured by Hu-Friedy Mfg. Co., LLC, located in Chicago, USA. This device is regulatory classified as Class I according to the standards in force for medical instrumentation accessories. As a Class I product, it meets the safety and performance requirements defined for this category of devices. Hu-Friedy is a manufacturer recognized for its expertise in the production of high-precision dental instruments. Practitioners must read the instructions carefully before use to ensure the compliance of the maintenance processes. Compliance with these standards ensures that the sharpening stone fulfills its technical function without compromising the safety of the instruments it treats.

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