Straight Osteotome Set

Straight osteotomes are bone-condensing instruments with a straight shaft and a convex or concave working tip, tapped into the implant site in graduated diameters to compress and expand bone for crestal sinus floor elevation, ridge expansion and implant site preparation in anterior and straightforward anatomy. This collection holds the Helmut Zepf straight osteotomes made in Germany: the complete straight osteotome set with ZEPFcare wash basket (No. 47.940.00), the individual convex (No. 47.944.20–.43) and concave (No. 47.942.20–.43) straight osteotomes in Ø 2.0 to Ø 3.9/4.3 mm with color marks for implant diameters Ø 3.3 to Ø 6.0, the Ø 6.0 straight widener (No. 47.940.60), and the OST SET I bone condensing set by Dr. Hohl and Dr. Hildebrand (No. 47.949.90).

All straight osteotomes are German surgical stainless steel — fully autoclavable and corrosion-resistant — with color marks on the shaft that identify the implant diameter each size prepares, so the sequence can be read at a glance in the tray.

Which Straight Osteotome Do You Need?

Concave tips are in the first column, convex tips in the second; each row is one step in the graduated sequence. Every product in the collection is linked once.

Concave	Convex	Tip size	Mark	Use
47.942.20	47.944.20	Ø 2.0 mm	colorless	First instrument in the sequence
47.942.28	47.944.28	Ø 2.8 mm	colorless	Second step
47.942.33	47.944.33	Ø 2.8 / 3.3 mm	colorless/yellow	Implants Ø 3.3 / 3.8
47.942.38	47.944.38	Ø 3.4 / 3.8 mm	red	Implants Ø 4.3
47.942.43	47.944.43	Ø 3.9 / 4.3 mm	blue/green	Implants Ø 5.0 / 6.0
—	47.940.60	Ø 6.0 mm widener	green	Final widening for the largest implant diameters

Sets

Zepf No.	Set	Use
47.940.00	Straight osteotome set, complete, in ZEPFcare wash basket	The convex and concave straight osteotomes above in one tray
47.949.90	OST SET I bone condensing set by Dr. Hohl and Dr. Hildebrand, in wash basket	Graduated osteotomes for condensing soft bone and preparing implant sites with minimal bone loss

Clinical Use

In a crestal (internal) sinus floor elevation the osteotomes are tapped in sequence from Ø 2.0 mm upward until the implant diameter is reached, condensing rather than removing bone; the concave tip carries a plug of bone and graft ahead of it to lift the membrane, while the convex tip compresses the socket walls for ridge expansion and primary stability in soft bone. The straight shaft suits anterior and premolar sites with direct access; angulated osteotomes are the choice where the posterior anatomy blocks a straight line.

Care and Reconditioning

Osteotomes are cleaned, disinfected, and sterilized between patients in the wash basket, and the working tips are inspected for burrs or deformation after each case; the color marks are durable but should not be scrubbed with abrasive pastes. Our Dental Hand Instrument Reprocessing & Sterilization Guide covers the general workflow for Helmut Zepf instruments.

Compare With

Related Helmut Zepf collections: Osteotome Sets, Osteotome Instruments, Interchangeable Osteotome Set, Hollow Cylinder Osteotomes, PI-Series Osteotome Set, and Surgical Hammers. For terminology, see the Surgical Instrument Glossary and the Surgical Instrument Library.

Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany

FAQ

How do I choose the right item from this collection? Every product page details the exact specification, reference number, and application; for cross-brand references and terminology, see our Hygiene Instrument Comparison Chart and Instrument Glossary — and our experts are a call away at (917) 480-2682 ext 101.

How should these instruments be reprocessed? Follow the manufacturer’s validated reprocessing instructions and the symbols on each product’s packaging; our reprocessing guide covers the general workflow.

Where are these instruments made? The instruments in this collection are manufactured by Helmut Zepf Medizintechnik in Seitingen-Oberflacht, Germany — precision dental and surgical instruments since 1921 — and ship fast from our US warehouse.

Further reading: Osteotome Sinus Lifts: Complete 2026 Buyer’s Guide

Manufacturer literature: VGO OST-Sets flyer (PDF) — more in our Surgical Instrument Library.