Do Dental Stitches Fall Out? What to Expect During Healing

Most dental stitches are designed to fall out on their own, and finding a loose thread in your mouth a week or two after oral surgery is usually a sign that healing is on track rather than something going wrong. Dentists broadly use two categories of suture material: absorbable stitches that dissolve or break down over days to weeks, and non-absorbable stitches that stay intact until a clinician removes them. Which type you received, and what kind of procedure you had, determines whether those stitches should be falling out and when.

Absorbable Versus Non-Absorbable Stitches

Absorbable sutures break down inside the body through one of two processes. Natural absorbable materials, like catgut, are digested by enzymes in your saliva and tissue. Synthetic absorbable materials, like polyglycolic acid (PGA) and poliglecaprone (sold under brand names like Vicryl and Monocryl), break down through a chemical reaction with water called hydrolysis.¹ Either way, the thread gradually loses tensile strength, fragments, and eventually falls away from the tissue. You might swallow small pieces without noticing, or you might feel a loose strand with your tongue and spit it out.

Non-absorbable sutures, such as nylon or silk, do not break down on a meaningful timeline. They are used when the tissue needs support for a longer period, or when a surgeon wants precise control over when the stitches come out.¹ If you have non-absorbable stitches, they will not fall out on their own; you will need a short follow-up appointment for removal, which is typically painless and takes just a few seconds per stitch.

Typical Timelines for Stitches to Fall Out or Be Removed

The exact schedule depends on the suture material and the procedure, but here are rough ranges most patients can expect:

Fast-absorbing gut: These are among the quickest to dissolve and often lose their integrity within five to ten days. They are common after simple extractions.
Synthetic absorbable (Vicryl, Monocryl): These maintain strength for roughly two to three weeks before breaking down. Monocryl tends to lose strength a bit faster than Vicryl.
Non-absorbable (silk, nylon): Your dentist or oral surgeon will schedule removal, usually seven to fourteen days after the procedure. Well-adapted wound edges can allow earlier removal.²

If an absorbable stitch falls out within the first day or two, that is worth a call to your dentist, because the tissue likely has not yet had enough time to hold itself together. After around five to seven days, the gum tissue in most healthy people has knit together enough that losing a stitch is rarely a problem. Oral tissue heals faster than skin in many cases because of the rich blood supply in the mouth, so the window during which stitches are genuinely critical is shorter than you might expect.

What Normal Healing Looks and Feels Like

In the first 24 to 48 hours after surgery, swelling, mild oozing of blood-tinged saliva, and discomfort around the wound are all within the normal range. By day three or four, swelling usually peaks and then begins to subside. Monitoring during this phase typically involves gentle inspection of the wound after clearing away food debris, along with tracking pain, swelling, bleeding, and bruising levels at home.³

As stitches begin to dissolve or loosen, you may notice the thread feeling slack, or one end poking your cheek or tongue. The area around the suture can look slightly white or yellowish; that is often granulation tissue forming underneath, not pus. Pus is thicker, usually accompanied by a foul taste or odor, and comes with increasing rather than decreasing pain. That distinction matters because many patients mistake normal healing tissue for signs of infection.

When a Falling-Out Stitch Is a Problem

There is no single rule, but context matters. A stitch that comes out within the first one to two days after a wisdom tooth extraction, for instance, may leave the socket exposed before a stable blood clot has formed. That exposure raises the risk of a painful complication called dry socket, where the underlying bone and nerves are left unprotected. Dry socket is the most common complication after lower wisdom tooth removal, and while sutures are not the only factor, premature loss removes one layer of protection.⁴

After more complex procedures like gum grafts or bone grafts, the tissue flap depends on sutures for stability. Losing stitches early in these cases can mean the graft shifts or becomes detached, which may compromise the outcome. If you had a procedure involving a graft and a stitch comes loose in the first week, contact your surgeon even if you feel fine.

On the other hand, if a single stitch comes loose at day seven or eight after a routine extraction and the gum looks pink and closed, that is almost always fine. The tissue has had enough time to begin holding itself together, and the stitch has done its job.

Why Suture Material Matters for Comfort and Infection Risk

Not all stitches behave the same way in your mouth. The oral environment is warm, wet, and full of bacteria, which makes the choice of suture material more consequential than in, say, a skin wound on your arm. Braided sutures like silk have a woven structure with tiny grooves and spaces between fibers. Bacteria settle into those spaces readily, and studies consistently find that braided silk attracts the most microbial buildup of common oral suture materials.⁵ Monofilament sutures, which have a single smooth strand, harbor considerably fewer bacteria.¹

That microbial difference translates into tissue reactions you can feel. Silk sutures tend to provoke a stronger inflammatory response, sometimes making the area around the stitch redder, puffier, and more tender than it would be with a synthetic alternative. One randomized trial comparing four suture materials found that silk produced the worst soft tissue healing, the strongest inflammatory reaction, and the greatest bacterial colonization of any material tested.⁶ Despite this, silk remains widely used because it is inexpensive, easy to handle, and ties securely. If your stitches feel especially irritating, the material could be part of the reason.

Research on the synthetic absorbable side has found that PGA sutures produce a milder inflammatory reaction than silk, and catgut stitches tend to score better on early wound-healing assessments than silk as well.¹ So if you have had stitches before that were particularly sore and this time the experience feels milder, the suture material may have changed.

Caring for Your Stitches at Home

Most post-op instructions tell you to avoid vigorous rinsing for the first 24 hours, then begin gentle rinses with warm salt water. You may also be given chlorhexidine mouthwash, which is a common antiseptic in dental care. One clinical trial that compared chlorhexidine rinses, warm saline rinses, and plain warm water on intraoral sutures found that the antimicrobial differences between these rinses were not statistically significant.⁷ That does not mean chlorhexidine is useless for oral health broadly, but it suggests that gently rinsing with salt water is a reasonable alternative if you find chlorhexidine staining your teeth or affecting your taste.

One thing worth knowing: mouthwashes can interact with suture materials in ways that affect how quickly they lose strength. An in-vitro study found that Listerine reduced the tensile strength of one type of absorbable suture (Monocryl 5-0) faster than other solutions, while chlorhexidine actually increased the tensile strength of Vicryl sutures temporarily.⁸ In practice, this means that using an alcohol-based mouthwash could theoretically speed up the breakdown of certain absorbable stitches. If your dentist tells you to avoid a specific mouthwash during healing, this is one of the reasons.

Beyond rinsing, the basics of stitch care are straightforward: avoid chewing directly on the surgical site, do not poke or pull at the stitches with your tongue or fingers, skip straws for a few days (the suction can disturb a healing socket), and stick to soft foods until you feel comfortable. Brushing the rest of your teeth normally is fine and encouraged, but give the immediate surgical area a wide berth with the bristles for at least a few days.

Conditions That Slow Oral Healing

If you have diabetes, healing after dental surgery can take longer and be more prone to complications. Diabetes impairs the proliferation and migration of the cells that rebuild tissue, while simultaneously ramping up inflammatory signals that prolong the wound’s early, painful phase.⁹ This means the window during which your stitches are doing critical work may be wider, and losing them early could matter more.

Smoking is another well-documented healing inhibitor. Nicotine constricts blood vessels in the gum tissue, reducing the oxygen and nutrient supply that the wound needs to close. Many oral surgeons advise patients to avoid smoking for at least 48 to 72 hours after surgery, though longer is better. Patients on blood-thinning medications like warfarin also have specific considerations; research indicates that with proper local measures such as sutures and hemostatic agents, the risk of postoperative bleeding in patients on continued anticoagulation is low, so dentists often do not need to discontinue the medication for routine extractions.⁴

Age and nutritional status play roles too, though these are harder to quantify individually. The general principle is that anything that impairs your body’s ability to fight infection or grow new tissue will make your stitches more important for longer.

What If a Stitch Comes Out and the Wound Opens

A small gap at the gum surface after a stitch falls out is not automatically an emergency. In many extraction cases, the wound heals by secondary intention, meaning the tissue fills in from the bottom up rather than being held edge-to-edge. The gap between wound margins is closely tied to healing time, so tighter initial closure generally means faster healing, but a small opening does not mean the process has failed.² Keep the area clean, continue gentle rinsing, and avoid disturbing the site.

Signs that warrant a call to your dentist include active bleeding that does not stop with gentle pressure after 20 minutes, increasing pain after the third day (pain should be trending downward by then, not upward), a foul taste or odor coming from the wound, visible pus, or fever. Any of these could indicate infection or dry socket, both of which are treatable but benefit from early intervention.

Tissue Adhesives as an Alternative

Not every oral wound needs traditional stitches. Tissue adhesives, essentially surgical glues, have been studied as an alternative for closing incisions inside the mouth. A systematic review and meta-analysis found that surgical glues can be a suitable alternative or supplement to conventional sutures, with several advantages in specific situations.¹⁰ One comparative study after impacted wisdom tooth removal found that cyanoacrylate glue provided similar pain outcomes to sutures but offered better control of bleeding immediately after the procedure.¹¹

Glue eliminates the question of stitch removal entirely, since it sloughs off on its own as the tissue heals. It also avoids the bacterial colonization problems that come with thread-based sutures sitting in the mouth for days. However, tissue adhesives are not suitable for every wound. They work best on clean, well-aligned cuts with minimal tension. Deep wounds, flap surgeries, and grafts generally still require sutures for the mechanical support they provide. Your surgeon will choose based on the specific procedure and your anatomy.

Why Some People Lose Stitches Faster Than Others

Even among patients who had the same procedure and the same suture material, the timeline for stitches dissolving or loosening can vary. Part of this is mechanical: people who chew more vigorously, talk a lot (which moves the cheeks and tongue against sutures), or unconsciously probe the area with their tongue will put more stress on the threads. Saliva composition also differs from person to person, and since enzymatic activity in saliva contributes to the breakdown of natural absorbable sutures, some mouths are simply more chemically active than others.

The location in the mouth matters as well. Stitches on the tongue or floor of the mouth are subject to constant movement and tend to loosen faster than stitches on the palate or in the back of the jaw. Sutures that are placed under too much tension, pulling the wound edges together tightly rather than gently approximating them, are also more likely to tear through tissue and come out early. Sutures should hold tissue without acting as ligatures or applying excessive force.²

If you notice your stitches loosening gradually over a few days, that is the normal progression for absorbable material. If a stitch pops out suddenly with a noticeable tug, that is more consistent with mechanical failure from tension or movement. In either scenario, the key question is the same: is the wound holding together on its own? If the tissue looks closed and you are not having new symptoms, the stitch did its job.

1
PubMed Central. Characteristics of Suture Materials Used in Oral Surgery: Systematic Review
2
Endodontic Topics. Soft tissue management: suturing and wound closure
3
PubMed Central. Post-Surgical Clinical Monitoring of Soft Tissue Wound Healing in Periodontal and Implant Surgery
4
PubMed Central. Systemic Review of Dry Socket: Aetiology, Treatment, and Prevention
5
PubMed Central. Bacteria adhere less to barbed monofilament than braided sutures in a contaminated wound model
6
Springer. Comparison of four different suture materials in respect to oral wound healing, microbial colonization, tissue reaction and clinical features-randomized clinical study
7
PubMed Central. A Prospective Clinical Evaluation of the Effects of Chlorhexidine, Warm Saline Mouth Washes and Microbial Growth on Intraoral Sutures
8
PubMed Central. The Effect of Chlorhexidine and Listerine® Mouthwashes on the Tensile Strength of Selected Absorbable Sutures: An In Vitro Study
9
PubMed Central. Diabetic wound healing in soft and hard oral tissues
10
PubMed Central. Tissue adhesives for closure of intraoral surgical incisions: A systematic review and meta-analysis
11
PubMed Central. A Comparative Study: Efficacy of Tissue Glue and Sutures after Impacted Mandibular Third Molar Removal