Bone Expansion and Osteotome Kits

Three Formats, Three Different Instruments

Bone expanders are tapered screws that are turned into the bone one size at a time, so the site is widened step by step; saw discs make the initial cuts in the ridge. Osteotomes are hand instruments with a shaped working end, and the listed set is offset and concave throughout. Chisels are edged hand instruments, and the listed set pairs them with the bone mallet that drives them. Because the designs differ, so do their size references: expanders are listed at 2.6 to 4.3 mm, the osteotomes at 2.8 to 4.8 mm nominal diameter, and the chisels at 4 to 7 mm nominal width. The numbers overlap but do not correspond, and a 3.8 mm expander and a 3.8 mm osteotome are different instruments.

• Bone expander kits — Five tapered expanders with saw discs, a wrench or ratchet drive and a case. Choose among the ratchet, 12-piece and 17-piece options.
• Offset concave osteotome set — Five manual osteotomes, one at each of five nominal diameters, each with an offset shaft and a concave working end.
• Bone splitting chisel and mallet set — Eight chisels, one straight and one curved at each of four nominal widths, plus the mallet.

Bone Expander Kits: Check What Each Option Adds

All three expander kits contain five expanders in 2.6, 3.0, 3.4, 3.8 and 4.3 mm, two saw discs in 7 and 10 mm, a pilot, a latch adapter and a manual knob, in a case. The ratchet kit adds a ratchet wrench and an extender for turning the expanders and has no chisel or pins. The 12-piece kit adds a 4 mm wrench and a chisel. The 17-piece kit adds an extender and three pins to the 12-piece contents.

That is four additional items, not five, because the two names count differently: the 17 includes the case and the 12 does not. Counting the case, the 12-piece kit is thirteen physical items and the 17-piece kit is seventeen. If you use expanders from another system, tell us and we confirm whether the adapters and wrench fit. Replacement expanders, discs and pins can be quoted by naming the kit and the part.

• See the expander kit contents

Offset Concave Osteotomes: Five Instruments, One at Each Diameter

The set holds five manual osteotomes at nominal diameters of 2.8, 3.3, 3.8, 4.3 and 4.8 mm, one of each. Every instrument has the same two features: an offset shaft, meaning the shaft alignment changes between handle and working end, and a concave working end with a recessed surface. Only the diameter changes from one to the next. Colored handle ends, diameter markings and graduation marks along the shaft identify them, so order and refer to an instrument by its diameter rather than its color.

The nominal overall length is 17 cm, which is the full instrument length and not the usable working length, and the graduation marks are separate from the diameter labels. A taper stated as two diameters describes one instrument, not two. The set does not include straight osteotomes, a mallet or a cassette, so list any of those separately if you need them.

• See the five-piece offset concave osteotome set

Chisel and Mallet Set: Nine Instruments in a Fixed Assortment

The set contains eight chisels, a straight and a curved one at each nominal width of 4, 5, 6 and 7 mm, plus one bone mallet, which is the impact instrument that drives them. That makes nine instruments and no other widths. A 5 mm straight chisel and a 5 mm curved chisel are different instruments, so give both the width and the form when you refer to one.

Width is only one dimension of a chisel. Edge profile, blade thickness and overall length are separate attributes, and markings along the blade are not the same as its width, so two chisels of the same nominal width are not automatically interchangeable. If you are matching a chisel you already use, compare width and form first, then any other dimension that matters to you.

• Review the chisel and mallet schedule

Match an Existing Kit or Request Replacements

Use the exact configuration name and identify the component position, nominal size, straight or curved form, working and overall lengths, and drive interface where applicable. Case layout and a shared size do not prove interchangeability.

Send quantities, destination and any marking or packaging requirements with the schedule you are matching. The quotation distinguishes instruments, accessories and containers. These comparisons are purchasing references; clinical selection and use follow the applicable professional assessment and product instructions.

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