Rainbow Ultra X

Rainbow Ultra X Root Canal Files are rotary endodontic instruments intended for mechanical preparation of root canals. The sequential file sizes allow the clinician to begin with coronal enlargement and progressively shape the canal toward the selected apical preparation.

The package lists an SX file together with 15/.03, 20/.04 and 25/.04 files. The SX instrument is generally used for coronal flaring and improving straight-line access, while the remaining instruments progressively enlarge and shape the canal. Rotary nickel-titanium files are valued for their flexibility and ability to follow curved canal anatomy more effectively than comparatively rigid stainless-steel instruments.

The Rainbow product family is marketed for endodontic cleaning and shaping applications. However, the exact manufacturer relationship between the Rainbow Ultra X name and the “Domed” logo printed on this particular package could not be independently verified from an authoritative product catalogue.

File Sequence Shown

• SX: Coronal enlargement and access preparation
• 15/.03: Initial canal preparation
• 20/.04: Progressive canal shaping
• 25/.04: Final enlargement in the supplied sequence

Key Features

• Engine-driven rotary root canal files
• Assorted four-file sequence
• 25mm working length
• Progressive sizes and tapers
• Designed for root canal cleaning and shaping
• Suitable for controlled crown-down preparation
• Individually sealed blister packaging
• Single-use symbol displayed
• Non-sterile marking displayed
• Professional dental use only

Operating Information Printed on the Pack

• Recommended speed: 350 RPM
• Recommended torque: 2.0 N·cm
• Length: 25mm
• Quantity: 4 files per blister
• Reference: R-U-X-A-25

The package prints “Torque: 2.0 N.” In endodontic motor settings, this is normally expressed as N·cm, but the clinician should follow the instructions supplied with the exact product rather than relying only on a website listing.

Sterilization and Use Information

The packaging displays:

• Non-sterile
• Single-use symbol
• 134°C sterilization symbol

This indicates that the instruments appear to require sterilization before initial clinical use while remaining intended for single-patient use. Confirm the validated autoclave cycle in the original instructions before sterilization.