Written and maintained by CASRAI Editorial Board
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Who this is for: clinic staff, dental buyers and students who need to know what a dental syringe is, which types exist, what its parts are and which standards define it.
This page describes products and general use; it is not medical advice.
What is a dental syringe?
A dental syringe, in the sense most people search for it, is a cartridge syringe: a reusable metal syringe body that holds a single-use glass cartridge (a carpule) pre-filled with local anesthetic. The U.S. FDA defines a cartridge syringe in 21 CFR 872.6770 as a device intended to inject anesthetic agents subcutaneously or intramuscularly, consisting of a metal syringe body into which a disposable, previously filled glass carpule is placed. The user attaches a needle and activates the carpule by partially inserting the plunger.
Regulatory status in the United States: Class II (special controls), and exempt from premarket notification (510(k)) subject to the limitations in 21 CFR 872.9 (FDA, eCFR, checked 2026-10-30).
It is a different device from the general-purpose syringe covered in what is a syringe: the drug is supplied in the cartridge rather than drawn up from a vial.
Parts of a dental syringe
The FDA definition names three working elements: the metal syringe body, the cartridge it holds, and a needle that the user attaches. One manufacturer’s aspirating cartridge syringe range (Henke-Sass, Wolf, product page checked 2026-10-30) also describes a finger plate, a thumb ring and a front section that holds the cartridge. On some models that front section is screwed on and removable, on others it is fixed. These are one maker’s design terms, not a standard’s parts list, and models differ.
- Syringe body: metal, reusable (FDA definition).
- Cartridge (carpule): disposable, pre-filled glass cylinder (FDA definition).
- Plunger: partially inserted to activate the carpule (FDA definition).
- Needle: attached by the user before use (FDA definition). See what is a hypodermic needle for needle basics.
- Finger plate, thumb ring, cartridge holder section: named by one manufacturer for its aspirating models.
Types of dental syringes
The international standard for dental cartridge syringes, ISO 9997 (BS EN ISO 9997:2020, BSI catalogue page, checked 2026-10-30), covers three types: non-aspirating, aspirating and self-aspirating. It applies to syringes with ISO metric threads and does not apply to syringes with a mechanical-advantage action that generates high pressure.
| Type | Description | Source |
|---|---|---|
| Non-aspirating | One of the three cartridge syringe types in the scope of ISO 9997:2020. | ISO 9997:2020 scope (BSI) |
| Aspirating | One of the three types in ISO 9997:2020. One manufacturer describes aspirating models using hook or tip mechanisms (arrow tip, corkscrew tip, multi-hook, harpoon type). | ISO 9997:2020 (BSI); Henke-Sass, Wolf |
| Self-aspirating | One of the three types in ISO 9997:2020. | ISO 9997:2020 scope (BSI) |
Dental aspirating syringe
An aspirating dental syringe is the aspirating type named in ISO 9997. The manufacturer cited above states its aspirating range suits all commercially available dental cartridges with a solid plug, and is offered in metric and imperial (US) thread versions and, on one model, in standard and petite sizes.
What is a dental carpule?
A carpule is the single-use glass cartridge that holds the local anesthetic and sits inside a cartridge syringe. The FDA uses the word in its definition of the device: a metal syringe body “into which a disposable, previously filled, glass carpule (a cylindrical cartridge) containing anesthetic is placed” (21 CFR 872.6770, Cornell LII and eCFR, checked 2026-10-31). The standard for these items, ISO 11499:2014, uses the term “cartridge” instead and sets requirements for single-use dental cartridges of 1.0, 1.7, 1.8 and 2.2 ml nominal capacity, including overall dimensions so they fit syringes that meet ISO 9997 and ISO 21533, tests for leakage, plunger movement, extractable volume and underfilling, and labelling (DIN Media abstract, checked 2026-10-31). The FDA itself glosses “carpule” as “a cylindrical cartridge”, so the two words name the same single-use component; the manufacturer cited below also uses “cylinder ampoules” for it and describes its syringes as suited to dental cartridges “with solid plug”.
Dental cartridge sizes
Cartridges are defined separately from syringes. ISO 11499:2014, Dentistry, single-use cartridges for local anaesthetics (DIN EN ISO 11499:2014-09 catalogue page, checked 2026-10-30; replaces the 2007 edition), sets performance requirements for single-use dental cartridges and lists general overall dimensions so that they fit dental cartridge syringes under ISO 9997 and ISO 21533. It specifies tests for leakage, plunger movement, extractable volume and underfilling, and includes labelling requirements.
| Nominal capacity | Note | Source |
|---|---|---|
| 1.0 ml | Added in the 2014 revision | ISO 11499:2014 via DIN Media |
| 1.7 ml | Added in the 2014 revision | ISO 11499:2014 via DIN Media |
| 1.8 ml | Covered by the standard | ISO 11499:2014 via DIN Media |
| 2.2 ml | Covered by the standard | ISO 11499:2014 via DIN Media |
What is an aspirating syringe?
An aspirating syringe is one of the three dental cartridge syringe types in ISO 9997:2020 (non-aspirating, aspirating and self-aspirating; BSI catalogue page, checked 2026-10-31). The difference between the types is built into the syringe, so the type is a property of the device, not of the cartridge placed in it. What the manufacturer documentation adds is the hardware an aspirating model carries (Henke-Sass, Wolf, checked 2026-10-31):
- A harpoon aspiration device on the HENKE-DENT 500 SOFT-GRIP, CW and ASTRA models.
- An arrow tip (100 A) or a corkscrew tip (100 B) on the HENKE-DENT 100 models, and the same two options on the 200 SL.
- Three or four movable aspiration hooks on the 300 A Trio and 300 B Quattro.
The same manufacturer lists side loading on some models and a bending mechanism for breech loading of the cartridge on others, an ergonomic thumb ring on one model, a petite version of one model, and states that all of these syringes are autoclavable at 134 C (273 F). These are one maker’s models; other makers’ designs differ, and the instructions for use for the specific syringe govern its handling and reprocessing.
In the United States an aspirating dental syringe falls under the same FDA device definition as other cartridge syringes: Class II (special controls), exempt from 510(k) subject to 21 CFR 872.9.
Dental needles and gauge
Under the FDA definition the needle is a separate item that the user attaches to the syringe body. Needle gauge and length are set by the needle manufacturer and shown on its labeling.
How to choose
Criteria stated in the standards and manufacturer documentation:
- Syringe type: the standard distinguishes non-aspirating, aspirating and self-aspirating cartridge syringes.
- Thread: ISO 9997 applies to ISO metric threads, and the manufacturer cited offers metric and imperial (US) thread versions, so confirm the syringe thread suits the cartridge and needle in use.
- Cartridge fit: ISO 11499 sets cartridge dimensions so they fit syringes made to ISO 9997 and ISO 21533; capacity options are 1.0, 1.7, 1.8 and 2.2 ml.
- Reprocessing: the manufacturer’s instructions for use define whether and how a syringe is reprocessed. For example, one maker states its aspirating line is autoclavable at 134 C (273 F); that statement applies to that product line only.
Safe use and handling basics
Follow the manufacturer’s instructions for use for the specific syringe, cartridge and needle. Cartridges are single-use and disposable per the FDA definition. Used needles are sharps: see FDA-cleared sharps containers for disposal containers and needle clippers for how devices of that kind are described.
Common mistakes
- Treating a dental cartridge syringe as interchangeable with a general-purpose syringe; the FDA classifies it as its own device (21 CFR 872.6770).
- Assuming every cartridge and syringe pairing is compatible; the standards exist to define fit, and thread type differs between metric and imperial versions.
- Reprocessing a syringe by a method the manufacturer’s instructions do not state.
- Assuming ISO 11608 (needle-based injection systems) governs dental syringes. See ISO 11608; dental-use systems are excluded from it.
FAQ
What is a dental aspirating syringe?
It is the aspirating type of dental cartridge syringe named in ISO 9997:2020, alongside non-aspirating and self-aspirating types. One manufacturer describes hook and tip mechanisms for its aspirating models.
What is an aspirating syringe in dentistry?
The aspirating type of dental cartridge syringe in ISO 9997:2020. One manufacturer builds its aspirating models with a harpoon device, an arrow or corkscrew tip, or three or four movable hooks.
What are the types of dental syringes?
ISO 9997:2020 covers three cartridge syringe types: non-aspirating, aspirating and self-aspirating.
What is a dental carpule?
The single-use glass cartridge of local anesthetic that is placed in a cartridge syringe; ISO 11499:2014 calls it a cartridge and lists 1.0, 1.7, 1.8 and 2.2 ml nominal capacities.
What is a dental carpule syringe?
Another name for a dental cartridge syringe. The FDA’s definition describes a metal syringe body holding a disposable, pre-filled glass carpule.
What is a dental cartridge, and what sizes exist?
A single-use glass cartridge of local anesthetic. ISO 11499:2014 lists nominal capacities of 1.0, 1.7, 1.8 and 2.2 ml.
What are the parts of a dental syringe?
Syringe body, cartridge, plunger and an attached needle per the FDA definition; one manufacturer also names a finger plate, thumb ring and cartridge holder section.
What is dental needle gauge?
Gauge and length are specified by the needle maker and shown on its labeling.
Sources
- U.S. FDA, 21 CFR 872.6770 Cartridge syringe, eCFR: https://www.ecfr.gov/current/title-21/section-872.6770 (checked 2026-10-30).
- BSI, BS EN ISO 9997:2020 Dentistry, Cartridge syringes: https://knowledge.bsigroup.com/products/dentistry-cartridge-syringes (checked 2026-10-30).
- DIN Media, DIN EN ISO 11499:2014-09 Dentistry, single-use cartridges for local anaesthetics: https://www.dinmedia.de/en/standard/din-en-iso-11499/198255542 (checked 2026-10-30).
- Cornell LII, 21 CFR 872.6770: https://www.law.cornell.edu/cfr/text/21/872.6770 (checked 2026-10-31).
- Henke-Sass, Wolf, aspirating cartridge syringes (manufacturer product page): https://www.henkesasswolf.de/en/med-syringes-dental/products/dental/cartridge-syringes/with-aspiration (checked 2026-10-30).
