Quick facts
- The United States splits one product family inside a single entry. 21 CFR 872.3275 puts zinc oxide-eugenol in Class I and exempts it from premarket notification, then puts every dental cement other than zinc oxide-eugenol in Class II.
- The temporary filling is named in the rule. The same entry describes the material as intended to serve as a temporary tooth filling or as a base cement to affix a temporary filling, to affix crowns or bridges, or to be applied to a tooth to protect the pulp.
- Resin materials sit in a different entry. 21 CFR 872.3690 covers tooth shade resin material in Class II.
- The material standard is separate from the regulation. ISO 3107:2011 covers non-water-based zinc oxide-eugenol cements for temporary cementation, for bases and as temporary restorations, and also non-eugenol cements containing zinc oxide and aromatic oils.
- Canada names no entry. The class follows from the rules, so a buyer reads the licence evidence rather than a product-specific line.
- The material is a system, not a syringe. The accessory set around it, including isolation and moisture control, is what decides whether the temporary holds.
A temporary filling material is bought in small quantities and used on the days when a patient cannot finish treatment, which is exactly when its properties matter most. The regulation of the material is more interesting than its price: one country writes a class exception into the rule for a single chemistry, and the standard that governs the material is a different document again. This article covers the entries, the class split, the material standards, the Canadian route and the consumables the procedure consumes.
Does the United States write the class into the entry, while Canada derives it by rule?
The United States entry describes the intended uses in full, which makes it the most useful page in the purchase.
21 CFR 872.3275 covers dental cement in two limbs. The zinc oxide-eugenol limb describes a device composed of zinc oxide-eugenol intended "to serve as a temporary tooth filling or as a base cement to affix a temporary tooth filling, to affix dental devices such as crowns or bridges, or to be applied to a tooth to protect the tooth pulp", and classifies it as Class I, general controls, exempt from premarket notification subject to the limits in the part. The second limb, covering dental cement other than zinc oxide-eugenol, uses the identical intended-use language and classifies it as Class II.
That single contrast is the reason this product family is worth reading carefully. The class difference does not come from a different job; the job description is word for word the same. It comes from the chemistry.
| Material family | Canada | United States entry and class | Standard that describes the material |
|---|---|---|---|
| Zinc oxide-eugenol cement | No named entry; the class is assigned by rule, not by chemistry | 21 CFR 872.3275, Class I, exempt subject to limits | ISO 3107, non-water-based zinc oxide-eugenol cements |
| Non-eugenol cement with zinc oxide and aromatic oils | No named entry; the same rule-based assignment | 21 CFR 872.3275, Class II | ISO 3107, non-eugenol cements |
| Water-based acid-base cement | No named entry; the same rule-based assignment | 21 CFR 872.3275, Class II | ISO 9917-1, powder and liquid acid-base cements |
| Resin-based restorative material | No named entry; the same rule-based assignment | 21 CFR 872.3690, Class II | ISO 4049, polymer-based restorative materials |
ISO 3107:2011 is the document that describes the first two rows. It specifies requirements for non-water-based zinc oxide-eugenol cements suitable for use in restorative dentistry for temporary cementation, for bases and as temporary restorations, and it also specifies requirements for non-eugenol cements containing zinc oxide and aromatic oils suitable for temporary cementation. ISO 9917-1:2007 covers the water-based family, and states that it is not intended to address resin-modified water-based cements, which is the boundary a buyer has to know about because a resin-modified product is not covered by that document.
How does Canada classify a temporary filling material compared with the United States?
Canada does not name a temporary filling material, so the class is derived from the rules and the buyer looks at the evidence behind the product instead of at a category line.
The rules that do the work sit in Schedule 1 of the Medical Devices Regulations, and the consolidated text of that regulation is current to 2026-09-21, last amended 2026-06-17. Schedule 1 assigns classes by rule rather than by product name: it places all denture materials and orthodontic appliances, and their accessories, in Class II, it places all surgical or dental instruments in Class I, and it leaves the remaining non-invasive devices under Rule 7. A temporary filling material is not a named category in that scheme, and the term "dental material" is no longer a defined term at all — the definition in the interpretation section of the regulation was repealed in 2002 by SOR/2002-190.
Three points are worth holding onto:
- The class follows the rule, not the chemistry. A Canadian buyer does not see the zinc oxide-eugenol exception because there is no entry to contain it.
- The licence sits upstream. The device licence obligation falls on the party that manufactures, imports or distributes rather than on the practice that buys.
- The establishment licence is a separate instrument. It is held by the party placing devices on the market, and it is not the same thing as a device licence.
The practical result is the same for both countries in one respect: the material has to be used within its intended purpose. A product intended to be a temporary restoration is not a permanent one, whichever country the practice buys in.
For a practice, the useful habit is to keep the intended-use statement with the material rather than in a drawer, because the intended use is what the class difference is written around. It is also the sentence a reviewer will ask for when the file is opened.
What do the material standards actually require?
The standards in this area exist so that a clinician can compare two products from two manufacturers on the same basis, and they divide along the chemistry.
- Setting behaviour. A temporary material is judged on how it sets and what it does while setting, which is the property a clinician notices first.
- Mechanical properties. Strength and the behaviour of the material under load are specified per material family rather than across all cements.
- Handling and mixing. Both the hand-mixed and the capsulated forms are addressed in the water-based family, which is why a practice changing from one form to the other has to re-read the instructions rather than assume an equivalence.
- Packaging and marking. The standard also carries requirements about how the product is supplied and marked, which is the part a buyer can check on the box.
The resin-based family is a separate document again. ISO 4049:2019 covers polymer-based restorative materials and describes them in terms of whether they are for direct or indirect restoration and for luting. That scope is the reason a resin-modified product should be evaluated against the resin document and not against the water-based cement standard.
Which consumables does a temporary restoration consume?
The material is the smallest part of the appointment. The rest of the consumable list is what determines whether the temporary survives until the next visit.
- Isolation and moisture control. Cotton rolls and the evacuator tips that keep the field dry while the material sets.
- Patient barriers. A three-layer bib and the surface barriers on the unit.
- Applicators. Swabsticks and the mixing pad or slab the material is prepared on.
- Records. The material used, the visit it was placed at, and the advice given to the patient.
| Consumable | What it does in the appointment | What to check on the order |
|---|---|---|
| Cotton rolls | Keeps the field dry while the material sets | Size and absorbency for the site |
| Evacuator tips | Removes moisture and debris from the field | Tip format and the practice's suction line |
| Swabsticks and mixing slab | Prepares and places the material | Tip firmness and non-shedding behaviour |
| Patient barriers | Bib and surface protection on the unit | Layer construction and pack count |
That list is also the honest explanation of why a temporary fails. The material is placed once and then has to survive until the next visit, and every item above exists to protect the setting period rather than the material itself.
At the chair, the cotton rolls are the line that does that work most often, so they are the one to check first when a practice is deciding whether a temporary failure was a material problem or a moisture problem.
Dental practices that order these lines at case level can use the wholesale ordering page for account setup and case pricing, and the B2B wholesale collection for the institutional lines. Practices that reprocess instruments in house can start with the biological indicator 5-pack trial and read the sterilization monitoring collection.
Sources
- 21 CFR 872.3275, dental cement
- 21 CFR 872.3690, tooth shade resin material
- 21 CFR 872.4565, dental hand instrument
- 21 CFR 872.6300, rubber dam equipment
- ISO 3107:2011, dentistry, zinc oxide-eugenol cements and non-eugenol cements
- ISO 9917-1:2007, dentistry, water-based cements
- ISO 4049:2019, dentistry, polymer-based restorative materials
- RCDSO, classification of instruments and reprocessing requirements
- RCDSO, standards, guidelines and resources
- Public Health Ontario, guidance for cleaning, disinfection and sterilization in health care settings
- Medical Devices Regulations, SOR/98-282, full text
- Health Canada, medical devices
- Canadian Dental Association
- Canadian Dental Association, oral health FAQs
- Canadian Dental Hygienists Association
- American Dental Association, science and research institute
- openFDA device classification database
- FDI World Dental Federation
- World Health Organization, oral health
- 29 CFR 1910.1030, bloodborne pathogens
- Medical Devices Regulations, SOR/98-282, Schedule 1 classification rules
Related reading
- Dental composite material in Canada vs the US: which class and standard
- Dental crown materials in Canada vs the US: which material and class
- Cotton rolls in Canada vs the US: which saliva absorber rules apply
- Dental dams in Canada vs the US: materials and isolation
CliniEco Medical supplies dental, sterilization and clinic consumables of the kind described in this article. Health Canada MDEL #35334. This article is written for dental, clinic and procurement professionals and is not clinical guidance; material selection, cavity preparation and the choice between a temporary and a definitive restoration belong to the treating dentist.
Frequently Asked Questions
Is a temporary filling material a different class from a permanent one in the United States?
The intended use does not separate them; the chemistry does. 21 CFR 872.3275 places zinc oxide-eugenol in Class I and exempts it from premarket notification, and it places every other dental cement in Class II, using the same description of intended use for both.
Which standard covers a zinc oxide-eugenol temporary material?
ISO 3107:2011, which specifies requirements for non-water-based zinc oxide-eugenol cements suitable for temporary cementation, for bases and as temporary restorations, and also for non-eugenol cements containing zinc oxide and aromatic oils suitable for temporary cementation.
Does the same standard cover a water-based cement?
No. ISO 9917-1:2007 specifies requirements and test methods for powder and liquid acid-base dental cements intended for permanent cementation, lining and restoration, and it states that it is not intended to address resin-modified water-based cements. A resin-modified product has to be evaluated against a different document.
How does Canada classify these materials?
Canada names no entry for a temporary filling material, so the class is derived by rule. Schedule 1 of the Medical Devices Regulations sets the classes by rule rather than by product name: denture materials and orthodontic appliances with their accessories are Class II, surgical or dental instruments are Class I, and the remaining non-invasive devices fall under Rule 7. Dental material is no longer a defined term in the regulation. The device licence obligation falls on the party that manufactures, imports or distributes the product, and the establishment licence is a separate instrument held by the party placing devices on the market.
Why does the standard carry packaging and marking requirements?
Because a clinician has to be able to identify what is in the container and what it is intended for. The standard addresses how the material is supplied and marked, which is the part of the compliance file a buyer can check on the box without opening it.
What else should be on hand for a temporary restoration?
Isolation and moisture control first, which means cotton rolls and evacuator tips, then patient barriers and the applicators the material is mixed on. The material itself is the smallest item in the appointment, and the temporary usually fails for a moisture or handling reason rather than a material reason.
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