Luxator, Periotome or Root Elevator? Differences in Atraumatic Extraction
Three groups of instruments are available today for gentle tooth removal, and at first glance they look alike: periotomes, luxators and classic root elevators. All three are placed between the tooth and the socket wall, but they work on different principles. Knowing the differences helps you preserve bone and soft tissue, keep the socket intact for later implant placement and reduce the risk of root and instrument fractures. This guide explains what distinguishes a periotome, a luxator and a root elevator, in which order they are used and which mistakes to avoid.
Key points at a glance
- A periotome has a very thin, sharp blade. It severs the fibres of the periodontal ligament without levering the tooth.
- A luxator sits in between: its thin, sharp blade cuts the ligament further apically and widens the socket with a slight wedging effect.
- A root elevator is more robust and transmits leverage and rotational forces. It is used once the ligament has already been released.
- Proven sequence: periotome first, then luxator, root elevator if needed and finally the forceps.
- Periotomes and luxators are not levers. Levering with them risks broken tips and damage to the buccal bone plate.
Why extract atraumatically?
In a conventional extraction the tooth is loosened with forceps and elevators. This places high forces on the socket walls, especially on the thin buccal plate in the anterior maxilla. If this plate fractures, the ridge loses volume. For immediate implant placement or later implant treatment, however, an intact socket is essential. Atraumatic extraction therefore relies on severing the attachment fibres first and moving the tooth only when it offers little resistance.
Periotome: severing the fibres
The periotome has a very thin, sharply ground blade. The literature cites blade thicknesses of roughly 0.4 to 0.7 mm. The blade is placed in the sulcus parallel to the root surface and guided into the periodontal ligament space with light, apically directed pressure. Step by step, the clinician works around the tooth and severs the Sharpey's fibres in the cervical area.
Periotomes are available straight for the anterior region and angled for premolars and molars. In our shop you will find, for example, the Periotome Pt1 and the Periotome Pt2. Important: a periotome is not tilted or rotated. The fine blade is designed for cutting, not for leverage.
Luxator: cutting and widening
The luxator combines the cutting edge of a periotome with a slightly stronger blade. The blade is thin and sharp, and blade widths typically range from about 1 to 5 mm. The term goes back to a branded instrument but is now commonly used for this whole group of instruments.
Like a periotome, the luxator is placed in the periodontal ligament space and advanced apically along the root with axial pressure. With slight rotation and gentle rocking movements it cuts the ligament deeper and widens the socket minimally. The index finger supports the shank close to the tip so that the instrument cannot slip into the soft tissue. Start with the narrowest blade that fits into the space, then move to wider blades.
Luxators come straight and curved in various widths, for example the luxator straight 2 mm, the luxator curved 3 mm or the luxator 3R straight with plastic handle. If you need several widths, choose the luxator set of 10.
Root elevator: levering and rotating
Classic root elevators are built more sturdily. Their blade is thicker and usually blunter, the handle strong. They transmit leverage, wedging and rotational forces and luxate teeth and roots out of the socket once the ligament has been released. Typical designs include:
- Straight elevators such as the Bein or Coupland elevator with a gouge-shaped blade, for example the Coupland root elevator 3 mm or the Bein root elevator set.
- Angled elevators in pairs (left and right) such as Flohr or Cryer elevators. Cryer elevators have a triangular, pointed blade and work through rotation, for example on the roots of mandibular molars. Examples: Cryer root elevator 27 left and Cryer root elevator 28 right.
- Fine apical elevators such as Apexo elevators for fractured, deep-seated root remnants, for example the Apexo root elevator according to Schmeckebier, straight.
Read more about the individual elevator shapes in our guide Root elevators: precision tools for dentistry.
Comparison: periotome, luxator, root elevator
| Feature | Periotome | Luxator | Root elevator |
|---|---|---|---|
| Blade | Very thin, sharp | Thin, sharp | Sturdy, usually blunter |
| Main function | Sever the ligament | Cut the ligament and widen the socket | Luxate tooth or root |
| Movement | Cutting with apical pressure | Axial pressure, slight rotation | Levering, wedging, rotating |
| Leverage | No | No | Yes, controlled |
| Timing | At the start | After the periotome | Once the ligament is released |
| Typical use | Anterior teeth, immediate implants | All teeth, root remnants | Roots, molars, wisdom teeth |
The sequence in practice
- Circumferential separation: the periotome releases the cervical fibres all around the tooth.
- Apical deepening: the luxator is advanced deeper with increasing width until the tooth moves easily.
- Controlled luxation: if needed, a root elevator performs the actual luxation, supported on bone, not on the neighbouring tooth.
- Removal: once the tooth rotates easily, it is removed with suitable forceps. Which forceps fit which tooth is shown in our guide Extraction forceps: which forceps for which tooth?.
A proven rule: if the tooth does not move easily, the ligament has not been severed sufficiently. More force is the wrong answer; another pass with the periotome or a narrow luxator is better.
Typical mistakes
- Levering with a luxator or periotome: the thin tips bend or break, and the buccal plate is put under load.
- Dull blades: a dull luxator no longer cuts but only acts as a wedge. Check blades regularly and sharpen or replace them as needed.
- Missing finger rest: without finger support the instrument can slip and injure soft tissue.
- Using the neighbouring tooth as a fulcrum: elevators are supported on bone, not on adjacent teeth or restorations.
Frequently asked questions
What is the difference between a luxator and a root elevator?
The luxator has a thin, sharp blade and cuts the periodontal ligament. It is not used for levering. The root elevator is more robust and transmits leverage and rotational forces to luxate the tooth or root.
Is a periotome the same as a luxator?
No. Both cut the ligament, but the periotome is even thinner and works only with apical pressure. The luxator is slightly stronger and additionally widens the socket through slight rotation.
When is a periotome particularly useful?
Above all where the socket is to be preserved for an implant, for example in the anterior region before immediate implant placement.
Can you lever with a luxator?
No. Leverage can bend or break the fine tip and damage the socket wall. Root elevators are intended for luxation.
Which width do you start with?
With the narrowest blade that fits into the periodontal ligament space. Wider blades follow once the space has been widened sufficiently.
Conclusion
Periotome, luxator and root elevator complement each other: the periotome severs the fibres, the luxator deepens and widens, the root elevator luxates. Used in the right order, extraction succeeds with less force and better bone preservation. You will find the right instruments in the category elevators, excavators and root elevators and under oral surgery. Advice on cleaning and sterilisation is given in our guide to care and reprocessing of instruments.