Aquacel vs Acticoat vs Silver Foam Dressing: Which Wound Dressing Should You Choose?

Quick Summary: Aquacel Ag, Acticoat, and silver foam dressings all deliver silver to a wound, but they work differently. Aquacel Ag is a carboxymethylcellulose fibre dressing that absorbs heavy exudate and releases ionic silver as it gels. Acticoat uses a nanocrystalline silver coating that releases silver continuously for up to seven days. Silver foam dressings such as Mepilex Ag combine a soft silicone foam with silver for moderate exudate and sensitive surrounding skin. Your choice depends on exudate level, infection risk, and how often the wound can be redressed.

The short answer: For a heavily exuding wound with infection risk, a hydrofibre dressing like Aquacel Ag is a common choice because it locks fluid into the dressing. For a wound that needs long-lasting antimicrobial cover between infrequent changes, Acticoat's nanocrystalline silver is designed to release silver over several days. For moderate exudate with fragile skin around the wound, a silver foam such as Mepilex Ag is often more comfortable and easier to remove. No single dressing fits every wound — the clinical question is always exudate volume plus infection risk plus how often you can change the dressing.

How Silver Dressings Work: Three Delivery Systems

Silver has broad antimicrobial activity against bacteria, including methicillin-resistant Staphylococcus aureus and Pseudomonas aeruginosa, when released in the right concentration at the wound surface. The challenge for dressing manufacturers is delivery: too little silver does nothing, and too much can irritate tissue. The three families covered below solve this differently, which is why they behave differently on the wound.

Aquacel Ag: The Hydrofibre Option for Heavy Exudate

Aquacel Ag is made from sodium carboxymethylcellulose, the same class of material used in many moisture-retentive dressings. In contact with wound fluid, the fibres hydrate and transform into a soft gel that fills the wound bed. Silver ions are released progressively as the dressing hydrates, so antimicrobial activity is concentrated where fluid is present. This makes the dressing a frequent choice for venous leg ulcers, diabetic foot ulcers, and pressure injuries with moderate to heavy exudate, and it is often used on partial-thickness burns.

One practical feature: the dressing does not need to be removed from fragile new tissue in the same way as an adhered dressing, because the gelled fibres can be rinsed away with saline during dressing changes. ConvaTec positions the family as antimicrobial dressings for wounds that are infected or at risk of infection.

Acticoat: Nanocrystalline Silver for Sustained Release

Acticoat uses a nanocrystalline silver coating applied to the dressing layers. Nanocrystalline silver releases a higher and more sustained level of silver ions than conventional silver compounds, and the manufacturer's design goal is continuous antimicrobial activity for several days — Acticoat 7 is formulated for up to seven days of release. That long window matters in burns and other wounds where dressing changes are painful or infrequent.

Clinical comparisons with Aquacel Ag in partial-thickness burns have found both dressings effective, with differences in pain and handling. One randomized study of 100 patients reported that Aquacel Ag caused less pain during application and inspection than Acticoat, while healing outcomes were similar. The practical takeaway is not that one is superior — it is that the two dressings answer different logistics: gel-forming absorption versus sustained silver release between changes.

Silver Foam Dressings: Moderate Exudate and Skin Protection

Silver foam dressings such as Mepilex Ag combine a foam pad with silver and a gentle silicone adhesive. The foam handles moderate exudate while maintaining a moist environment, and the silicone layer is designed to lift without stripping fragile skin — a priority for elderly patients and skin around chronic wounds. Because the dressing stays soft and conforms to body contours, it is commonly used on sacral and heel pressure injuries, surgical wounds, and other areas where movement makes dressing adherence difficult.

Comparative reviews note that foam dressings with silver are frequently chosen when clinicians want antimicrobial cover plus moisture management in one product, though the evidence base for silver dressings overall remains mixed. Cochrane reviews have found no clear evidence that silver-containing dressings improve healing of infected chronic wounds compared with non-silver alternatives, which is why clinical guidelines emphasise using silver dressings for a defined period, then re-evaluating.

How to Choose: Exudate, Infection Risk, and Redressing Frequency

Clinicians usually work through three questions when selecting a silver dressing.

Infection risk is assessed clinically — signs include increased pain, delayed healing, odour, and discoloured exudate — and silver dressings are one tool in a broader plan that includes cleansing, debridement when indicated, and pressure offloading. Silver is not a substitute for removing the cause of the wound.

Price Comparison: What These Dressings Cost in Canada

Silver dressings are among the more expensive wound care products, so procurement decisions matter for clinics, home care programs, and LTC facilities. Prices below are published Canadian retail list prices at the time of writing and vary by size, box count, and distributor.

Comparing per-dressing cost is more meaningful than box price. At the reference prices above, a single Aquacel Ag+ Extra runs roughly CAD 37–45, an Acticoat 7 about CAD 56–61, and a Mepilex Ag about CAD 42. Silver foam options sold per piece, such as the CliniEco Silver Antimicrobial Foam Dressing, sit in a similar range for a comparable size while avoiding the minimum purchase of a full box — which suits clinics stocking a wound care cart rather than a whole wound program. For facilities that standardise on foam dressings generally, the CliniEco Advanced Foam Wound Dressing (without silver) is a lower-cost option for low-infection-risk wounds, with sterile gauze sponges covering cleansing and packing steps in the same cart.

Evidence Caveats: What the Reviews Actually Say

Silver dressings are widely used, but the evidence is more measured than marketing suggests. A Cochrane review of topical silver for infected wounds concluded there is no clear evidence that silver-containing foam and alginate dressings improve healing of infected chronic wounds compared with non-silver dressings over four weeks. A separate systematic review of silver-based wound care reached similar conclusions about the overall quality of evidence, while noting silver's established antimicrobial activity in laboratory and burn settings.

What this means in practice: use silver dressings when infection risk or confirmed bioburden justifies them, review the wound within one to two weeks, and step down to a plain dressing once the wound is clean and healing. Documenting why silver was chosen and when it was stopped keeps both clinical care and supply budgets defensible.

Frequently Asked Questions

Is a silver dressing better than a plain foam dressing?

Not automatically. Silver adds antimicrobial activity, which is valuable when a wound is infected or at high risk, but it also adds cost. Cochrane reviews have not shown silver dressings heal chronic wounds faster than plain alternatives overall. Choose silver for a defined period when infection risk justifies it, then reassess and step down to a plain foam such as a standard self-adhesive foam dressing once the wound is clean.

How often should a silver dressing be changed?

It depends on the product and the wound. Aquacel Ag is typically changed daily to every few days depending on exudate; Acticoat 7 is designed to stay in place for up to seven days; silver foams are usually changed every two to four days. Follow the manufacturer's instructions and the clinician's redressing schedule, and change sooner if fluid strikes through or the wound needs assessment.

Can a silver dressing be used on an infected wound?

Silver dressings are commonly used on wounds that are infected or at risk of infection, and they are one component of managing bioburden. They are not a systemic antibiotic and do not replace clinical assessment, cleansing, debridement when needed, or antibiotics for spreading infection. Wounds that worsen despite a silver dressing need prompt professional review.

How long can a silver dressing be used?

Use silver dressings for a defined course, usually one to two weeks, then re-evaluate. Prolonged use without reassessment adds cost and exposes tissue to silver without clear benefit. If the wound is not improving, the care plan — not just the dressing — needs review.

Are silver dressings safe for all wounds?

No. Silver dressings should not be used on people with known silver allergy, and caution is advised in pregnancy and on very large surface areas for extended periods. They are not indicated for wounds that are clean and healing without infection risk, where a plain dressing is equally effective at lower cost.

Do silver dressings hurt when removed?

It depends on the adhesive design. Silicone-based silver foams such as Mepilex Ag are designed for atraumatic removal and are gentler on fragile skin, while fibre dressings such as Aquacel Ag gel and can be rinsed away with saline. Nanocrystalline silver dressings may adhere more and can be more painful to remove, which is one reason sustained-release versions are used where changes are infrequent.

References

1. ConvaTec — AQUACEL family of dressings (product information). convatec.com
2. Smith+Nephew — ACTICOAT antimicrobial barrier dressing. smith-nephew.com
3. Mölnlycke — Mepilex Ag product range. molnlycke.ca
4. Silver in Wound Care — Friend or Foe? A Comprehensive Review. Int J Mol Sci, 2019. PMC6756674
5. Cochrane — Topical silver for treating infected wounds. CD005486
6. International Wound Infection Institute — Wound infection in clinical practice (principles of bioburden management). internationalguideline.com
7. Aquacel Ag versus Acticoat in partial thickness burns: randomized controlled study in 100 patients. reviewed in PMC6756674
8. Health Canada — Medical devices regulatory framework. canada.ca
9. OstomySale Canada — Aquacel Ag+ Extra reference price. ostomysale.ca
10. Inner Good Canada — ACTICOAT 7 reference price. innergood.ca
11. Life Supply Canada — ACTICOAT 7 reference price. lifesupply.ca
12. MyEverythingStore Canada — Mepilex Ag reference price. myeverythingstore.ca

Last updated: 2026-09-08. CliniEco Medical is a licensed medical device establishment (MDEL #35334).

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