6Pcs Blue Endodontic Rotary Files 04Taper 31/25mm Nickel Titanium Dental Root Canal Endo Instrument for Dentistry

V3-Flex-B  Blue Thermally Activated NiTi Rotary File System (OEM Supported)Cost-Effective & Practical V3-Flex-B NiTi File SystemV3-Flex-B NiTi files are safe, high-performance and cost-effective domestic nickel-titanium root canal systems. With excellent practicality and affordable pricing, they serve a wide range of clinical dentists and provide reliable root canal preparation solutions for general dental practices.Dental Thermally Activated NiTi Rotary Endodontic Files1. Product OverviewThermally activated NiTi rotary files represent the new generation of root canal preparation instruments. Manufactured with specially heat-treated nickel-titanium alloy (CM Wire), the instrument’s physical properties change with temperature, delivering significantly improved flexibility and superelasticity. It enables safer, more efficient and anatomically conforming root canal preparation while relying on thermodynamic phase transformation to enhance overall clinical adaptability and safety.2. Core Advantages & Material Technology① Thermally Adaptive NiTi Alloy Adopts upgraded non-traditional NiTi material with temperature-dependent mechanical properties. The files remain rigid at room temperature for easy handling, installation and root canal entry; under human body temperature (35°C) and irrigation environment, they instantly transform into a highly flexible, superelastic state that perfectly adapts to curved root canals and follows natural canal anatomy.② Swiss-Engineered Design Features Swiss adaptive anatomical design with shape memory performance. The files rotate centered within the canal and cut dentin evenly, maintaining original root canal morphology and effectively preventing common complications such as apical transportation, perforation and ledging.③ High Fatigue Resistance Integrates the advantages of M-wire and CM-wire technology to enhance cyclic fatigue resistance. The files withstand repeated bending and continuous cutting, minimizing fracture risks and ensuring stable service life.④ 3D Nano Multi-Polishing Technology Adopts mechanical, chemical and electrochemical triple polishing combined with 3D nano-coating. The file surface is burr-free, smooth, wear-resistant and low-friction, ensuring ultra-smooth clinical operation and reducing root canal resistance significantly.⑤ High-Efficiency Cutting & Debris Removal Optimized sharp cutting edges improve cutting efficiency for fast and precise root canal shaping. The enhanced flute design removes debris thoroughly, avoids accumulation and improves overall root canal preparation quality.3. Structural Design Features① Optimized Cross-Section Multiple upgraded cross-sectional designs including convex triangle, S-shape and square balance cutting efficiency, debris discharge and anti-fatigue performance.② Multi-Gradient Taper System Covers standard and variable tapers: 0.02, 0.03, 0.04, 0.06, 0.07, 0.08, 0.09 and 0.10, suitable for simple, calcified, curved and oversized root canals.③ Progressive Cutting Edge Gradually varied cutting power from tip to shank reduces apical stress and prevents apical damage.④ Non-Cutting Safety Tip Blunt non-cutting tip fundamentally avoids apical transportation, perforation and ledge formation for maximum clinical safety.4. Complete V3-Flex-B Sequence & Specifications1) Orifice Openers (Coronal Flaring) Available: 1708#, 2008#,3008#2) 0.02 Taper Path Files (Fine Canal Glide Path) Available: 1002#, 1202#, 1302#, 1502#, 1602#, 1702#, 1902#, 2002#3) 0.03 Taper Path Files (Calcified & Fine Canals) Available: 1503#, 1803#, 2003#4) 0.04 Taper Main Shaping Files (General Purpose) Available: 1004#,1504#,1704#,2004#,2504#,3004#,3504#,4004#,4504#,5004#,6004#,7004#,8004#,9004#,–10004# full series5) 0.06 Taper Shaping Files (Most Popular Clinical Taper) Available: 1006#,1506#,1706#,2006#,2506#,3006#,3506#,4006#,4506#,5006#,6006#,7006#,8006#,9006#,–10006# full series6) 0.07 Taper Shaping Files Available: 2007#, 2507#7) 0.08 Taper Large Taper Files (Coronal Enlargement & Retreatment) Available: 1508#, 2008#, 2508#,3008#8) 0.09 Taper Shaping Files Available:2009#, 2509#, 3009#9) 0.10 Taper Shaping Files Available: 2010#5. Universal File Naming & Labeling Rules1) Standard Digital Coding Rule Example: 2506-25mm / 1708-19mm / 3504-31mm - First two digits: apical diameter (D0 × 100). e.g., 15 = 0.15mm, 25 = 0.25mm - Last two digits: taper value (taper × 100). e.g., 04 = 0.04 taper, 06 = 0.06 taper - Suffix number: total file length (19mm / 21mm / 25mm / 31mm) 2) Clinical Abbreviation Format: #Diameter/Taper-Length (e.g., 25/04-25, 35/06-21)3) Reciprocating File Marking T25: 0.25mm tip / 0.08 taper T40: 0.40mm tip / 0.06 taper T50: 0.50mm tip / 0.05 taper R25: General-purpose single file4) Taper Reference S1: 0.17 tip / 0.04–0.11 variable taper — Coronal flaring S2: 0.20 tip / 0.04–0.11 variable taper — Mid-coronal shaping F1: 0.20 tip / 0.07 taper — Apical finishing #20 F2: 0.25 tip / 0.08 taper — Main apical finishing #25 F3: 0.30 tip / 0.09 taper — Large canal finishing #305) ISO Standard Handle Color Coding 06# Pink | 08# Gray | 10# Purple | 15# White | 20# Yellow | 25# Red | 30# Blue | 35# Green | 40# Black6. Taper & Length Clinical Selection Guide1) Taper Selection - 0.02~0.04 Small Taper: Fine curved canals, calcified anterior canals, maximum dentin preservation - 0.06 Medium Taper: Universal mainstream taper for premolars and molars (best-selling 2506 / 3506) - 0.08~0.12 Large Taper: Straight large canals, orifice flaring, root canal retreatment2) Length Selection - 19/21mm Short: Anterior teeth, primary teeth, short-rooted permanent teeth - 25mm Standard: Full-dentition universal size for most adult cases - 31mm Extended: Ultra-long molar canals, distal roots of mandibular molars, palatal roots of maxillary molars3) Recommended Routine Stock Specifications - Anterior teeth: 1506 / 2006 – 21mm - General molars: 2506 / 3504 – 25mm - Ultra-long molars: 2506 / 3506 – 31mm7. Product Specifications & Packaging LogisticsBasic Unit Specification 6 files per blister, 8g per blister 10 blisters per box (60 files/box) Box net weight: 80g | Gross weight: 90g Box dimension: 12×7×2cmBulk Packing Standard (Foreign Trade)10 Blisters (Small Batch): 90g gross, 12×7×2cm100 Blisters / 10 Boxes: 1.1kg gross, 22×15×8cm (600 files)500 Blisters / 50 Boxes: 4.8kg gross, 35×28×12cm (3000 files)1000 Blisters / 100 Boxes: 9.2kg gross, 42×30×15cm (6000 files)Tolerance ±5%, all lengths share unified packaging; neutral packaging & OEM private labeling available.8. Standard Clinical Operation ProtocolPre-operation Preparation Ensure root canal patency with #10 K-file; fully lubricate with EDTA gel; use programmable endo motor with fixed speed and torque.Coronal Pre-flaring & Straight-line Access Use orifice openers or GG burs to eliminate coronal interferences; confirm working length via apex locator and X-ray.Main Shaping ProcedureCoat file with EDTA gel and insert gently into canal.Use light brushing in-and-out motion (2–3mm amplitude), no forced apical pressure.Stop immediately when resistance is felt; brush 4–5 times then withdraw for cleaning.Single in-canals dwell time ≤ 3–5 seconds.Irrigate thoroughly with NaOCl and recap with #15 K-file after each file change.Proceed sequentially to complete full apical shaping.Post-operation Disinfection & Obturation Ultrasonic final irrigation, drying, then obturation. - Lateral Condensation: Match 0.02 taper gutta-percha - Warm Vertical Condensation: Match 0.04 taper gutta-percha9. Instrument Maintenance & Service Life StandardDisinfection Rules Clean residual debris with alcohol after use; only autoclave sterilization is allowed; immersion disinfection is prohibited.Recommended Service Life - Anterior straight canals: 30 canals per file - Normal molar canals: 15 canals per file - Severely calcified / curved canals: single-use recommended10. Safety Contraindications & PrecautionsNever force files apically when resistance occurs to avoid fracture and perforation.Must use torque-controlled endo motor with overload protection.Keep continuous EDTA lubrication and NaOCl irrigation to reduce friction and heat.Discard files immediately if deformed, unwound, dull or scratched.For extremely narrow canals (File bending under body temperature is a normal elastic feature; files can restore straight shape above 60°C.Sufficient irrigation is required to avoid debris accumulation.11. Core Product Value SummaryV3-Flex-B thermally activated NiTi files adopt advanced thermodynamic phase transformation technology, featuring rigidity at room temperature for safe entry and superelasticity at body temperature for perfect shaping. Superior fatigue resistance enables safe preparation of curved, calcified, S-shaped and C-shaped complex canals.Balancing safety, efficiency and ultra-high cost performance, this system preserves natural canal morphology, minimizes apical transportation, ledging and file separation, and simplifies clinical procedures. With complete specifications and affordable pricing, it brings professional nickel-titanium root canal technology to grassroots dental clinics for daily and high-level complex endodontic treatment.12. Typical Clinical Application CasesCase 1: Severe S-shaped Curved Anterior Canal Difficulty: Double curvature easily causes transportation and file fracture. Solution: 1708 opener + 1504/2004 path files + 2506 finishing file. Result: Superelastic thermo-activated property perfectly follows S-curve; no ledging or apical deviation, complete anatomical preservation.Case 2: Calcified & Narrow Molar Canal Difficulty: Atretic canal with high obstruction and clamping risk. Solution: 1503 calcified path file + 2004/2504 shaping file. Result: High rigidity for calcified penetration + high flexibility for safe progression; improves calcified canal success rate greatly.Case 3: Ultra-Long Distal Molar Canal Difficulty: Working length over 29mm with apical curve, standard files insufficient in length.Solution: 31mm extended 2506 / 3506 files. Result: Full-length apical preparation completed with perfect anatomical conformity.Case 4: Complex Elderly Root Canal Treatment Difficulty: Aged brittle teeth, irregular canal morphology and limited operating space. Solution: Sequential 1502/2003 + 2504/3506 minimally invasive preparation. Result: Maximum dentin preservation, low-stress shaping, less postoperative swelling and affordable treatment cost.Clinical Conclusion V3-Flex-B thermally activated NiTi file system reliably handles curved, calcified, ultra-long and aged complex root canals. Compared with imported premium systems, it provides equivalent shaping accuracy and safety with much higher cost performance, ideal for global dental wholesale and clinic daily use.OEM & Custom Service Available Support neutral packaging, private logo laser engraving, custom labeling and bulk OEM processing; fast delivery, stable quality and complete certification documents for global export.