Scaler Insert, M23A, Left Side, ONYX Coating
The Scaler Insert M23A Left Side with ONYX Coating is a precision-engineered dental instrument insert designed to deliver consistent, reliable performance during scaling procedures. Crafted to exacting standards by Helmut Zepf GmbH, this scaler insert is a trusted choice for dental professionals who demand accuracy and longevity from their instrumentation.
Key Features
- Model: M23A, Left Side configuration for optimal ergonomic access
- ONYX Coating: A specialized surface treatment that enhances durability and corrosion resistance
- Precision Tip Design: Engineered to support effective calculus removal and subgingival access
- Interchangeable Insert: Threads into compatible Helmut Zepf handles for hand instrumentation, so the working end can be replaced without replacing the handle
- Sterilization Compatible: Suitable for standard dental autoclave sterilization processes
Why Choose This Scaler Insert?
The M23A Left Side Scaler Insert with ONYX Coating is specifically designed for clinicians who require a dedicated left-side access instrument. The ONYX Coating provides an added layer of protection against wear, helping to maintain the insert's working edge integrity over repeated use cycles. This makes the scaler insert a cost-effective and dependable addition to any dental operatory.
Professional-Grade Quality
Helmut Zepf GmbH has a long-standing reputation for manufacturing high-quality dental instruments. This Scaler Insert reflects that commitment, combining precise manufacturing tolerances with a robust coating technology to support efficient and comfortable clinical workflows.
1-Year Warranty
This Helmut Zepf instrument is covered by a 1-year warranty against defects in materials and workmanship from the date of delivery.
60-Day Returns — Any Reason, Even If Used
Put this instrument to work in your practice. If it is not right for you, return it within 60 days of delivery for a full refund — for any reason, even if it has been used.

FAQ
What is the M23A Left Side designation? The M23A Left Side refers to the specific tip geometry and orientation of this scaler insert, making it ideal for accessing surfaces that benefit from a left-sided approach.
Is the ONYX Coating safe for patients? The ONYX Coating is a surface treatment applied to the instrument body to enhance durability; the working tip maintains standard material characteristics suitable for dental use.
Can this scaler insert be sterilized? Yes, this scaler insert is compatible with standard autoclave sterilization protocols used in dental practices.
Compare With
| Brand | M23 (23) – Base Designation |
|---|---|
| Hu-Friedy | SM23 |
| American Eagle | AESM23 |
| PDT | R098 |
| Nordent | SCN130 (Doeppler #M-23) |
| LM-Dental | 313-314 |
Base pattern designations shown. Same clinical pattern, not identical manufacture — see our Hygiene Instrument Comparison Chart.
Manufacturer literature: ZEPF Dental Catalog (PDF) — more in our Catalogs & Product Library.
Specifications: Zepf No. 24.751.123ALOX
| Zepf No. | 24.751.123ALOX |
| Insert type | Scaler insert |
| Pattern / working end | M23A (Sickle Scaler M23), left side |
| Material or coating | ONYX coating |
| Fits handle | Compatible Helmut Zepf interchangeable-insert handles |
| Sold as | Replacement insert |
The M23A working end (left side) is a sickle scaler for supragingival calculus removal, mainly on anterior teeth. The ONYX coating is a hard, non-reflective black surface that keeps its edge longer. Exchanging the insert renews the working end; the handle is retained.
Read the guides: Hygiene Instruments with QuickFix Replaceable Tips · All QuickFix replaceable tips · Helmut Zepf Dental Instrument Collection
This is a M23 Sickle Scaler. See all 12 Zepf versions — handles, coatings and replacement inserts — on our M23 Sickle Scaler page.
Backed by our Helmut Zepf Warranty — lifetime on extraction and explantation forceps, one year on every other Zepf instrument. Full terms and how to make a claim are on the Warranty page.
