What are dissolvable sutures?
Dissolvable sutures — the everyday name for absorbable sutures — are stitches made from a material the body breaks down and clears on its own, so they do not need to be taken out. "Dissolvable" is a description of the strand's fate, not a schedule.
Why it matters
Almost every question about dissolvable sutures is really a question about time, and time is the one thing this word does not tell you. The material, the construction and the product all change the answer, which is why the figure lives in the instructions for use and not in a general article. Knowing why the question has no single answer is more useful than a number that was never true of your product.
“Dissolving” is the wrong picture
The word does a lot of harm. It suggests something melting quietly into solution, on a schedule, until one day it is gone. What actually happens is chemical: the bonds holding the strand together are cleaved — by water in the case of every synthetic absorbable material, by the body’s own enzymes in the case of catgut — and the fragments are cleared. The strand does not thin evenly like a sugar cube. It stops being strong, and then, later, it stops being there.
That gap is where most of the confusion sits, and it is worth being precise about it with anyone who asks, because it reframes the question. Someone asking “how long do they last?” almost always means “how long do they hold?” Someone asking “when will they be gone?” is asking about a later event entirely. Both are legitimate; they have different answers, and they are stated separately in the instructions for use for exactly that reason.
Why nobody will give you a single number
There is a reasonable suspicion that a manufacturer declining to quote an absorption time is being evasive. The opposite is closer to the truth. A figure on a general web page is not a controlled figure — it is not tied to a specific product, a specific market’s approval, or the document a regulator holds the manufacturer to. The instructions for use supplied with the product is.
And the variables are real. The material matters: a glycolide homopolymer, a glycolide/lactide copolymer and a p-dioxanone monofilament are different chemistries and do not behave alike. The construction matters: a braid and a monofilament are different objects, not different grades. And with catgut, part of the mechanism belongs to the patient — enzymatic breakdown tracks the patient’s own proteolytic response, which is not a property of the strand at all. A number that ignores all of this is not a simplification; it is simply about some other suture.
What you can answer confidently
Three things, without reaching for the IFU. That the material is broken down and cleared by the body, which is why removal is not part of the plan. That the stitches will stop doing their job well before they have disappeared, and that this is by design rather than a fault. And that whether a material is right for a given tissue is a question of approved indications, not of whether it happens to be absorbable — no material is indicated for everything.
For the material chemistry itself — the families, the monomers, and how hydrolysis and enzymatic breakdown differ mechanistically — the fuller treatment is in What are absorbable sutures?. The individual material articles cover PGA, polyglactin 910, catgut, poliglecaprone and polydioxanone in turn.
– Read more about absorbable sutures manufactured by Dolphin Sutures
Key terminology
- Dissolvable / absorbable / resorbable
- Three names for the same property. "Absorbable" is the term used in the pharmacopoeias and on the packaging; "dissolvable" is the everyday word for it.
- Dissolving
- Loosely used, and misleading. The strand is broken down chemically and the fragments are cleared by the body — it does not melt or dissolve into solution the way sugar does in water.
- Removal
- The step an absorbable suture is intended to avoid. Non-absorbable sutures placed in skin are taken out; absorbable sutures placed internally are not.
- Strength retention
- How much load the strand still carries at a given point. This is the figure most people mean when they ask how long a suture "lasts", and it runs out before the material is gone.
- Absorption period
- How long until the material has been cleared from the tissue. Later than strength loss, and a separate specification.
- Instructions for use (IFU)
- The controlled document supplied with the product. It is where the indications, the strength-retention profile and the absorption period for that specific product are stated.
Technical characteristics
- Also called
- Absorbable sutures, resorbable sutures
- What happens to them
- Broken down by hydrolysis (synthetic materials) or by the body's enzymes (catgut), then cleared
- Do they need removing
- No — that is the property they are selected for
- How long they hold
- Stated in the instructions for use supplied with the product — product-specific and not reproduced here.
- How long until absorbed
- A separate figure from the above, also stated in the instructions for use.
- Where they are used
- Approved indications are stated in the instructions for use and vary by market.
How it compares
| Material | Everyday name | Construction | What breaks it down |
|---|---|---|---|
| Catgut | Gut / chromic gut | Twisted | The body's enzymes |
| PGA | Polyglycolic acid | Braided multifilament | Water (hydrolysis) |
| Polyglactin 910 | Often known by a brand name | Braided multifilament | Water (hydrolysis) |
| Poliglecaprone | Often known by a brand name | Monofilament | Water (hydrolysis) |
| Polydioxanone | PDS | Monofilament | Water (hydrolysis) |
What clinicians weigh when selecting
Which question is being asked
"How long will it last?" and "how long until it's gone?" are different questions with different answers, and people asking the first often accept an answer to the second. The trade-off in answering is precision against being understood.
The number is not a property of the word
Two sutures both correctly described as dissolvable can behave very differently. The relevant question is which material and which product, not whether it is absorbable.
Explaining variability without alarming
Absorption is affected by the material, the construction and — for catgut — the patient's own enzymatic response. The tension is between an honest "it varies" and a reassurance the material cannot support.
What the patient is usually worried about
Often the real question is whether anything is left inside, or whether they need to come back to have stitches out. Those are answerable directly; the timeline is the part that belongs to the IFU.
Availability in your market
Not every material is approved or available everywhere, natural-origin materials in particular. The instructions for use supplied with the product in your country governs.
Frequently asked questions
Do dissolvable sutures really disappear completely?
The material is broken down and cleared by the body, which is why removal is not needed. How long that takes is product-specific and stated in the instructions for use supplied with the product.
How long do dissolvable stitches take to dissolve?
There is no single answer, and any article that gives you one is guessing. It depends on the material, the construction and the specific product, and the figure is stated in that product's instructions for use — the controlled document.
Why won't anyone give me one number?
Because two numbers exist, not one. A suture stops carrying load well before the material has gone, so strength retention and absorption period are quoted separately. Collapsing them into a single figure would make both wrong.
Do they need to be removed?
No — not needing removal is the property they are chosen for. Sutures that do need removal are non-absorbable ones, which are a different group of materials.
Are dissolvable sutures used for skin?
Where a material may be used is set by its approved indications, which are stated in its instructions for use and vary by market. No material is indicated for every tissue type.
Is "dissolvable" the same as "absorbable"?
Yes. "Absorbable" is the term used on the packaging and in the pharmacopoeias; "dissolvable" is the everyday word. "Resorbable" also appears and means the same thing.
Instructions for use
The instructions for use supplied with the product is the controlled document for indications, contraindications, strength-retention and absorption data, warnings and precautions. Where this article and the instructions for use differ, the instructions for use govern. Approved indications vary by market.
Medical & regulatory notice
This article is general reference information about suture materials for healthcare professionals. It is not medical advice, not a recommendation for any procedure or patient, and not a substitute for the instructions for use supplied with the product or for clinical judgement. Product availability and approved indications vary by market. Dolphin Sutures manufactures surgical sutures; nothing here should be read as a claim of clinical benefit or of superiority over another material.