What This Guide Covers
This guide explains how Arestin works, what happens during treatment, and when a periodontist might recommend it. It is written for patients who have been diagnosed with periodontal disease (gum disease) or who are considering options beyond a standard cleaning.
Periodontal disease is a bacterial infection of the gums and bone that support your teeth. [1] It often starts as gingivitis, which is mild inflammation and bleeding of the gums. Without treatment, gingivitis can progress to periodontitis, a more serious form where the gum tissue pulls away from the teeth and forms deep spaces called periodontal pockets. These pockets trap bacteria and can lead to bone loss and, eventually, tooth loss.
Arestin is one tool periodontists use to treat these pockets. It is not a replacement for deep cleaning. Instead, it works as a follow-up therapy, delivering antibiotics directly to the infection site over several weeks. Understanding what Arestin does, and what it does not do, can help you make an informed decision with your dental provider.
How Arestin Treats Gum Disease
Arestin delivers the antibiotic minocycline directly into infected gum pockets to kill bacteria that cause periodontal disease.
What Arestin Is
Arestin is a locally delivered antibiotic. "Locally delivered" means the medication goes directly to the infection site rather than traveling through your entire body like an oral antibiotic pill. The active ingredient is minocycline, which belongs to the tetracycline family of antibiotics.
The minocycline is packaged in tiny microspheres, which are powder-like particles small enough to fit inside a periodontal pocket. Once placed, these microspheres slowly dissolve and release minocycline over a period of about 21 days. This sustained release keeps a high concentration of antibiotic right where the infection lives.
Because the drug stays local, it typically causes fewer side effects than systemic (whole-body) antibiotics. You do not need to take pills at home, and the antibiotic concentration at the infection site is much higher than what an oral pill could deliver to the same spot.
How Arestin Works with Scaling and Root Planing
Scaling and root planing, often called SRP or deep cleaning, is the primary non-surgical treatment for periodontal disease. [1] During SRP, a periodontist or hygienist uses specialized instruments to remove plaque, tartar (hardened plaque), and bacterial toxins from below the gum line. The root surfaces of the teeth are then smoothed to help gum tissue reattach.
SRP alone is effective for many patients. However, some periodontal pockets harbor bacteria that are difficult to remove mechanically. This is where Arestin comes in. Placed immediately after SRP, the microspheres settle into the cleaned pocket and continue fighting residual bacteria over the following three weeks.
Think of it this way: SRP is the deep cleaning, and Arestin is the follow-up disinfectant that keeps working long after your appointment is over. Research and clinical guidelines generally recommend using locally delivered antibiotics as an adjunct (addition) to SRP rather than a standalone treatment. [1]
Why Pocket Depth Matters
Healthy gum tissue fits snugly around each tooth, forming a shallow groove called a sulcus. In a healthy mouth, this groove measures 1 to 3 millimeters deep. [1] When bacteria build up and trigger inflammation, the gum tissue begins to separate from the tooth, creating a deeper pocket.
Pockets measuring 4 millimeters or more are a sign of active periodontal disease. At 5 millimeters and above, bacteria thrive in an environment that your toothbrush and floss simply cannot reach. [2] These deeper pockets are the primary target for Arestin therapy.
The goal of combining SRP with Arestin is to reduce pocket depth over time. Shallower pockets are easier to keep clean at home and during regular dental visits. In many cases, patients see measurable pocket depth reduction within 30 to 90 days after treatment.
What You Should Know Before Treatment
Arestin treatment requires minimal preparation, but there are a few practical details to understand before your appointment.
Who Is a Candidate for Arestin
Arestin is typically recommended for adults with moderate to advanced periodontal disease. Your periodontist may suggest it if you have pockets measuring 5 millimeters or deeper that have not fully responded to SRP alone. It may also be considered for pockets that show persistent bleeding on probing, which is a sign of ongoing active infection.
Arestin is not appropriate for everyone. You should tell your periodontist if you are allergic to tetracycline antibiotics, including minocycline, doxycycline, or demeclocycline. Patients who are pregnant or breastfeeding should also discuss alternatives, as tetracycline antibiotics can affect developing teeth and bones. Arestin is generally used in adult patients. Your provider will determine whether it is suitable based on your medical history and the severity of your gum disease.
How to Prepare
There is very little preparation needed. Arestin is placed at the same visit as your SRP or at a follow-up appointment. You do not need to fast, stop taking medications, or make special arrangements unless your periodontist instructs otherwise.
Before treatment, your provider will review your medical history and current medications. Be sure to mention any allergies, especially to antibiotics. If you take blood thinners, let your provider know, as SRP involves work below the gum line. Arrive with a clean mouth. Brush and floss normally on the day of your appointment.
Timing and Frequency of Treatment
Arestin is typically placed once per treatment site during or immediately after SRP. Your periodontist will re-evaluate your pocket depths at a follow-up visit, usually 4 to 6 weeks later. If certain sites have not improved enough, a second application may be recommended.
The number of sites treated in one visit varies. Some patients need Arestin in just a few pockets. Others may need it in multiple areas throughout the mouth. Your periodontist will target only the pockets that meet the clinical criteria, so not every tooth will necessarily receive the medication.
What to Expect During and After Treatment
The placement procedure is quick, painless in most cases, and does not require additional anesthesia beyond what is used for SRP.
During the Visit
After your periodontist completes the scaling and root planing, the treatment sites are dried gently. Arestin comes in a small, disposable cartridge with a blunt-tipped applicator. The provider inserts the tip of the cartridge into the periodontal pocket and deposits the minocycline microspheres directly at the base of the pocket.
You may feel slight pressure, but the process is not painful. Each site takes only a few seconds. If multiple teeth are being treated, the entire Arestin placement typically adds just a few minutes to your appointment. No stitches or bandages are needed.
After Treatment Care
The first 10 to 14 days after placement are important for getting the best results. Your periodontist will likely give you a set of aftercare instructions. Common guidelines include avoiding hard, crunchy, or sticky foods near the treated areas for about a week. You should also avoid touching the treated gum tissue with your fingers or tongue.
Do not brush the treated areas for 12 hours after placement. After that, you can brush gently with a soft-bristled toothbrush. Avoid flossing the treated sites for about 10 days, as floss can dislodge the microspheres before they have fully released the antibiotic. Your periodontist may also recommend avoiding mouthwash containing alcohol during this period.
Mild soreness and tenderness in the treated areas are normal. This usually resolves within a day or two. If you experience significant pain, swelling, or an allergic reaction such as a rash or difficulty breathing, contact your provider right away.
Expected Results
Results vary by patient and by the severity of the disease. In many cases, patients notice less bleeding during brushing within a few weeks. Pocket depth reduction is typically measured at a follow-up appointment 30 to 90 days after treatment.
Arestin is not a cure for periodontal disease. Gum disease is a chronic condition that requires ongoing management. [1] Even after successful treatment, you will need regular periodontal maintenance visits, usually every 3 to 4 months, to keep the disease under control. Good daily oral hygiene at home is equally essential. Without consistent care, pockets can deepen again and bacteria can return.
Cost of Arestin Treatment
Arestin typically costs between $35 and $75 per tooth site treated. Costs vary by location, provider, and case complexity.
The total cost depends on how many sites need treatment. A patient who receives Arestin in four pockets might pay between $140 and $300 for the Arestin portion alone. This is in addition to the cost of scaling and root planing, which is a separate charge. SRP costs vary widely but often range from $150 to $350 per quadrant (quarter of the mouth).
Insurance coverage for locally delivered antibiotics is inconsistent. Some dental insurance plans cover Arestin under periodontal treatment benefits. Others classify it as an adjunctive therapy and may not cover it at all. Before treatment, ask your dental office to submit a pre-authorization or pre-estimate to your insurance company. This gives you a clearer picture of what your plan will pay.
If Arestin is not covered, ask your provider about payment plans or other financing options. Some practices offer discounts for patients paying out of pocket. The cost should be weighed against the potential benefit of avoiding more invasive and expensive procedures, such as periodontal surgery, later on.
When to See a Periodontist
You should see a periodontist when gum disease has progressed beyond what a general dentist can manage with a standard cleaning. [1]
General dentists diagnose and treat early-stage gum disease (gingivitis) and can perform scaling and root planing. However, a periodontist is a dentist with additional years of specialty training in the prevention, diagnosis, and treatment of periodontal disease. [1] If your pockets measure 5 millimeters or deeper, if you have bone loss visible on X-rays, or if your gums have not improved after initial SRP, a referral to a periodontist is a reasonable next step.
A periodontist can determine whether Arestin or another adjunctive therapy is right for your specific situation. They can also offer other treatment options, including surgical approaches for advanced cases. If you have systemic health conditions linked to periodontal disease, such as diabetes or cardiovascular disease, a periodontist can coordinate care with your medical team.
Signs that you should consider a specialist evaluation include persistent gum bleeding, gum recession (gums pulling back from the teeth), loose teeth, persistent bad breath that does not improve with good oral hygiene, and changes in your bite. You can learn more about what periodontists treat and how to find one on the periodontics page.
Find a Periodontist Near You
If you have been diagnosed with gum disease or are experiencing symptoms like bleeding gums, deep pockets, or bone loss, a periodontist can evaluate your condition and recommend the most appropriate treatment plan. Use the the periodontics page on My Specialty Dentist to search for a board-certified periodontist in your area, read about their credentials, and take the next step toward managing your periodontal health.
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