Why a porous implant is harder to separate from tissue than a smooth one, what that means for the skin above it, and how the material already in place influences the plan for a revision.
Patients who know which implant they have often want to know what that means for a second operation. Patients who do not know sometimes worry that the answer is important enough to be a problem. Both questions have the same practical answer: the material in place changes how the removal is done and how carefully, but it rarely changes whether a revision is possible.
This page is about that difference and what follows from it. It is not a comparison of which material is better for a first operation — that decision belongs to Custom-Carved Silicone and to the wider discussion of autologous options. Reinforcing skin that has already thinned is a separate subject, covered in Autologous Dermis in Revision.
Silicone stays largely separate from the tissue around it, so it lifts out of a defined pocket. Gore-Tex is porous and tissue grows into it over time, so it has to be separated from the tissue it has bonded with rather than lifted out. That difference means a longer, more careful dissection and a higher chance that the skin above it has thinned, which is why a nose with a porous implant is planned with more attention to what will cover the reconstruction.
On this page
- How the two materials sit in tissue over time
- Why one separates cleanly and the other does not
- What that means for the skin above it
- How the material already in place shapes the new plan
- What this does not mean
- What to bring if you do not know what was used
- Frequently asked questions
How the two materials sit in tissue over time
The difference comes down to surface. A smooth implant and a porous one are treated differently by the body, and the treatment continues for as long as the implant is in place.
Around a smooth silicone implant, the body forms a thin capsule — a boundary layer that surrounds the implant and keeps it separate from the tissue outside. The implant sits inside that boundary, in a pocket, and the pocket is a genuine plane that can be found and opened. Years later, that arrangement is essentially unchanged.
A porous implant behaves differently by design. Tissue grows into the pores, which is what gives the material its stability — it is anchored rather than merely lodged in place. There is no clean boundary, because the intended relationship with the surrounding tissue is integration rather than separation. The longer it has been in place, the more established that integration becomes.
Neither behaviour is a defect. They are two different design intentions, each with a rationale, and both materials are used widely and appropriately. The consequences only become relevant when the implant has to come out.
Why one separates cleanly and the other does not
A silicone implant is removed by finding the capsule, opening it, and lifting the implant out. The plane exists, and provided it is entered correctly the surrounding tissue is disturbed relatively little.
A porous implant has to be separated from tissue it has grown into. There is no plane to find, so one is created — carefully, with the dissection kept as close to the implant as possible in order to leave the surrounding tissue intact. This takes longer, and it demands more attention throughout, because the tissue being separated includes the tissue that will have to cover the reconstruction afterwards.
"Gore-Tex is harder to remove than silicone, and the skin can become thinner, so a little more care has to be taken during the operation."
That is the whole of the practical difference stated plainly. It is not a warning about the material. It is a statement about how the operation is planned: more time allowed, dissection kept tighter to the implant, and the state of the covering assessed before anything is decided about what replaces it.
| Smooth silicone | Porous implant | |
|---|---|---|
| Relationship with tissue | Separated by a capsule | Tissue grows into the material |
| Plane at removal | Exists and can be opened | Has to be created by dissection |
| Time required | Comparatively short | Longer |
| Disturbance to surrounding tissue | Limited if the plane is entered correctly | Greater; kept to a minimum by dissecting close to the implant |
| Effect of time in place | Little change | Integration becomes more established |
Why time in place matters more for one than the other
A silicone implant that has been in for fifteen years and one that has been in for three are, at removal, broadly similar propositions. The capsule around it is a mature boundary in both cases, and the plane is there to be found.
A porous implant is not the same at three years and at fifteen. Integration continues, and the tissue relationship becomes more established with time. This is one of the few places in revision planning where the date of the first operation genuinely changes the technical expectation, rather than serving as a proxy for something else.
Patients sometimes notice this themselves. A silicone implant can often be felt to move very slightly under firm pressure, whereas an integrated implant tends to feel like part of the nose. That impression is not a diagnosis, but it is a reasonable observation to mention at consultation, and it is one of the things that helps narrow the likely material before any imaging is looked at.
What that means for the skin above it
The skin over the bridge is what the eye actually sees, and it is the tissue most affected by a difficult removal.
Two things can thin it. One is pressure over time from what sits underneath. The other is disturbance during removal, where separating an integrated implant necessarily involves working immediately beneath the covering. Where both have happened, the skin can be noticeably thinner than it was before the first operation.
Thin skin over the bridge changes the reconstruction in three ways. Any edge or transition beneath it becomes visible, so the framework has to be built with smoother junctions and less prominent margins. The plan becomes more conservative about height, because a raised structure under a thin covering shows more of itself. And in some cases the covering needs reinforcement in its own right before anything is built beneath it, which is dealt with in its own article.
This is why the assessment of the skin comes before the discussion of shape in these cases, and why a patient with a porous implant may hear a more cautious answer about achievable definition than they expected.
How the material already in place shapes the new plan
Four elements of the plan are affected once the material is known or strongly suspected.
Operating time. A porous implant means a longer dissection, and that is allowed for in advance rather than discovered on the day. Nose surgery here runs from one and a half to three and a half hours depending on what is involved, and these cases sit toward the upper part of that range.
The order of decisions. Where the covering is likely to be thin, its state is assessed as the removal proceeds, and what is placed afterwards is decided with that finding rather than committed to beforehand.
What the reconstruction has to achieve. A framework under thin skin has a different job from the same framework under thick skin. It has to produce the shape and remain invisible while doing so.
How much is attempted in one operation. Where removal has been demanding and the tissue is more disturbed than expected, doing less at that sitting is sometimes the better judgment. That is decided during the operation, on findings, and the possibility is discussed beforehand so it does not arrive as a surprise.
What is not affected is whether the revision can proceed. In the great majority of cases the material in place is a planning variable, not an obstacle.
Why the covering is assessed before the shape is discussed
In an ordinary revision the conversation moves from cause to tissue to material to plan. Where a porous implant is in place, one element of that sequence carries more weight than usual: the condition of the skin is treated as a limiting factor rather than as a detail.
The practical effect is that the answer to "how high can my bridge be" arrives later in these consultations, and it is more likely to be a range than a number. A patient who has read that a particular height is achievable, or who has been quoted one elsewhere, can find this frustrating. The reasoning is simply that height under a compromised covering is the combination most likely to produce a visible, disappointing result, and stating the limit at the consultation is the only point at which saying so is useful.
It also affects what is planned for the tip. A tip built to a definition that thin bridge skin cannot support above it produces a mismatch along the line between the two, and correcting that later means operating again through tissue that is already thinner than one would wish. Planning both together, at a level the covering can carry, is what avoids that sequence.
What this does not mean
Three clarifications, because this topic attracts a good deal of unhelpful commentary online.
It does not mean one material is a mistake and the other is correct. Both are used deliberately and for reasons, and the choice made at a first operation was made for a nose in a particular state.
It does not mean a porous implant should be removed pre-emptively. An implant that is sitting well, causing no symptoms and producing a shape the patient is content with, is not a problem awaiting a solution.
And it does not mean the removal is dangerous. It means it takes longer and requires more care, which is a statement about surgical planning rather than about risk to the patient. What happens once the implant is out — and why that question is decided together with the removal itself — is set out in Removing an Implant Without Replacing It.
What to bring if you do not know what was used
A substantial proportion of patients coming for revision do not know which material is in their nose. Records were not given, were given in a language they could not read, or have been lost over the intervening years.
This is a common position rather than an obstacle, and the assessment proceeds without them. What helps is bringing whatever exists rather than concluding that partial information is not worth carrying.
Any records at all. An operative note, a receipt, a consent form, a discharge summary. Even a document naming the procedure without naming the material narrows the possibilities.
Approximate dates. When the surgery was, and when any subsequent procedures were. Time in tissue bears directly on how a material behaves at removal.
Photographs from before the original surgery. These say more about what was done than most patients expect, because the difference between the starting shape and the current one indicates the scale of what was placed.
What you were told at the time. Even a recollection of the word used in the consultation is information, offered as a recollection rather than as a fact.
What fills the remaining gap is imaging and, ultimately, direct inspection. 3D CT imaging shows what is present and its relationship to the structures around it. The final characterisation is made when the material is exposed, which is why a plan for a revision of unknown history includes what happens under more than one finding rather than assuming the most convenient one.
The related question — how a nose is diagnosed when no records exist at all — is covered in its own page.
Frequently asked questions
I do not know which implant I have. Can you tell before surgery?
Examination and a 3D CT usually narrow it, and the likely answer is enough to plan around. A definitive identification is not available before the tissue is open, and a plan that assumed one would be resting on a guess.
Does a porous implant have to be removed at revision?
Where the bridge and the tip are being rebuilt, the existing implant comes out as part of that. Whether a revision is being undertaken at all is the earlier question, and it is answered by examination rather than by the material.
Will my skin definitely be thinner?
No. It is a recognised possibility rather than an expectation, and how much it applies to you is assessed at examination and again during the operation.
Is the recovery longer for a more difficult removal?
More tissue disturbance generally means more swelling in the early period. The overall course follows the reconstruction that was carried out rather than the removal on its own.
Should I have chosen the other material the first time?
That is not a useful question to carry into a revision. The decision then was made for the nose you had then, and the plan now is made for the nose you have now.
Does the difference affect how much the operation costs?
Surgical fees are determined after the scan and consultation, because what the operation involves is not known before then. General fee guidance is given by the clinic’s consultation manager.
Can any residue be left behind?
Where tissue has integrated with a porous material, the aim is complete removal of the implant while preserving the covering. No responsible plan promises in advance that nothing microscopic remains anywhere.
About the author
Dae-hee Han, MD — Board-Certified Plastic Surgeon (specialist certificate No. 2045, issued 3 March 2014; medical licence 00394, issued 26 February 2009). Master’s degree, Ajou University School of Medicine. Training at the Craniofacial Center, Chang Gung Memorial Hospital, Taiwan (2013), and the IFAAS Mini Fellowship, University of Florida, USA (2016). Three rhinoplasty papers published in SCIE-indexed international journals. More than 4,500 nose surgeries — Dr. Han’s career total from 2017 to 2025, counted from medical records. Eighteen years in practice since medical licensure in 2009; thirteen years as a board-certified plastic surgeon. He carries out consultation, surgery and follow-up personally; fee guidance is given by the clinic’s consultation manager.
Last reviewed: 2026-08-15
Clinic information
Edition Plastic Surgery Clinic & Dermatology
6F, OPUS 407, 407 Gangnam-daero, Seocho-gu, Seoul 06614, Republic of Korea
One minute on foot from Gangnam Station Exit 10
Tel +82-2-591-0100 · editionprs@gmail.com
Consultation hours: Monday to Friday 10:00–19:00 · Saturday 10:00–17:00 · closed Sundays and public holidays
Disclaimer
Individual results may vary. Bleeding, infection, swelling, asymmetry, and scarring can occur. Please decide after a full consultation with a board-certified specialist.
This page is general medical information. It is not a diagnosis, and it does not promise a particular outcome. Surgical fees are given after an in-person consultation.