What alloy is K One made from?

K One™ is manufactured from NiTi with conventional heat treatment.

How many files are in the K One sequence?

The K One™ system includes 1 file: K One 25/.06.

What motion type does K One use?

K One™ uses continuous rotation motion.

What cases is K One best for?

K One™ is best suited for: primary-tooth pulpectomy, short pediatric canals, single-file pediatric workflow.

What speed and torque settings are recommended for K One?

Recommended settings: 250-350 RPM and 1.5-3.0 Ncm across the file sequence (refer to official DFU for full per-file parameters).

K One™

Perfect Dental (Shenzhen Perfect Medical Instruments)

Continuous Rotation

K One™

15 mm single rotary file (25/.06) with a brochure-described "special tip design" intended to avoid irritation and damage to the periapical tissue of primary teeth (per brochure)

AlloyNiTiFile1VerifiedMay 2026

Specifications

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File	Tip	Taper	Speed rpm	Torque Ncm
K One 25/.06	0.25	6%	250-350	1.5-3.0

Clinical Tips

Single 25/.06 file at 15 mm length is intended to match the deciduous-tooth canal length and width (per brochure)

Brochure describes a "special tip design" to avoid periapical irritation and damage in primary teeth; the brochure does not explicitly use the term "non-cutting"

Spec table: 1.5–3.0 N·cm torque and 250–350 rpm; sterilization ≤134 °C; supplied 4 pcs per box/blister (per brochure features and spec tables)

Pediatric anatomy varies widely; verify working length radiographically and respect physiologic apex location (general pediatric guidance, not from brochure)

Pulpectomy in primary teeth typically aims for clean and shape with minimal apical extension; over-instrumentation may damage the permanent tooth bud (general pediatric guidance, not from brochure)

Warnings

Brochure features table specifies a maximum sterilization temperature of 134 °C (per brochure)
Brochure body does not explicitly state "single-use"; the Perfect Dental IFU family (RC, TS4, PX Wave, TF4, TG6) consistently mandates single-use, single-canal handling, so single-use is treated as the default Perfect Dental policy until an IFU specific to K One is published
Do not fully immerse in NaOCl; the IFU family limits contact to max 5% NaCl on the working part for up to 5 minutes (per Perfect Dental IFU family precautions)
Safety in pregnant or breastfeeding patients has not been established (per Perfect Dental IFU family precautions)
Inspect for deformation, unwinding, corrosion, or damaged edges before use — discard if any defect is present (per Perfect Dental IFU family precautions)