Antibiotic Treatment
Periodontal disease is a progressive condition which leads to severe inflammation and tooth loss if left untreated. Antibiotic treatments can be used in combination with scaling and root planing, curettage, surgery or as a stand-alone treatment to help reduce bacteria before and/or after many common periodontal procedures.
Antibiotic treatments come in several different types, including oral forms and topical gels which are applied directly into the gum pockets. Research has shown that in the case of acute periodontal infection, refractory periodontal disease, prepubertal periodontal disease and juvenile periodontal disease, antibiotic treatments have been incredibly effective.
Antibiotics can be prescribed at a low dose for longer term use, or as a short term medication to deter bacteria from re-colonizing.
Oral Antibiotics
Oral antibiotics tend to affect the whole body and are less commonly prescribed than topical gel. Here are some specific details about several different types of oral antibiotics:
- Tetracycline antibiotics – Antibiotics which include tetracycline hydrochloride, doxycycline, and minocycline are the primary drugs used in periodontal treatment. They have antibacterial properties, reduce inflammation and block collagenase (a protein which destroys the connective tissue).
- Macrolide antibiotics – This group of antibiotics has proven effective at reducing inflammation, and can also reduce bacterial growth associated with periodontitis.
- Metronidazole – This antibiotic is generally used in combination with amoxicillin or tetracycline to combat inflammation and bacterial growth in severe or chronic periodontitis.
Topical Gels and Strips
The biggest advantage of the direct delivery of antibiotics to the surfaces of the gums is that the whole body is not affected. Topical gels and direct delivery methods tend to be preferred over their oral counterparts and are extremely effective when used after scaling and root planing procedures. Here are some of the most commonly used direct delivery antibiotics:
- Atridox® – This doxycycline gel conforms to the contours of gum surfaces and solidifies over them. Over several days, this gel gradually releases the antibiotic medication.
- PerioChip® – This chip is placed into the actual gum pocket after root planing procedure. PerioChip® slowly releases Chlorhexidine, a powerful antibacterial antiseptic. PerioChip® reduces pocket depth in most cases in periodontitis sufferers.
- Actisite® – This thin strip is similar to dental floss and contains tetracycline hydrochloride. The thread is place temporarily directly between the tooth and gum to kill bacteria and reduce the depth of gum pockets. Several threads are sometimes placed for around 10 days to enhance the antibiotic effect.
- Elyzol® – This metronidazole antibiotic comes in gel and strip form. It is unique because it is able to destroy parasites as well as oral bacteria.
- Arestin® – This Minocycline antibiotic comes in mini capsules which are delivered into the gums after scaling and root planing.
Noticeable periodontal improvements are usually seen after systemic or oral antibiotic treatment. Waterloo dentist will incorporate and recommend the necessary antibiotic treatments as necessary for the healing of your periodontal condition.
If you have any questions about periodontal disease or antibiotic treatments, please ask your dentist.
What to Expect During Antibiotic Treatment
Antibiotic treatment for periodontal disease comes in two forms: systemic antibiotics taken by mouth that work throughout the body, and local antibiotics placed directly into specific gum pockets where they release the medication over days or weeks. Which approach we use depends on the type and severity of the periodontal disease, how many sites are involved, and your overall health.
Systemic antibiotics (typically doxycycline, amoxicillin, or metronidazole) are prescribed for short courses — usually 7 to 14 days. They're used when bacterial infection is spread through multiple pockets, when there's an active abscess, or when more aggressive forms of periodontitis are present. The course is paired with mechanical treatment (scaling and root planing) — antibiotics work on the bacteria; the cleaning removes the biofilm and tartar that protect them.
Local antibiotics (such as Arestin or chlorhexidine chips) are placed into specific deep pockets at the end of a scaling appointment. The medication stays in place and releases over 7 to 14 days. This targeted approach delivers high antibiotic concentrations exactly where they're needed without affecting the rest of the body.
Who Benefits from Antibiotic Treatment
Not every case of gum disease needs antibiotics. Most early gingivitis and mild periodontitis resolves with thorough mechanical cleaning and improved home care. Antibiotic treatment becomes part of the plan when:
- Specific deep pockets aren't responding to scaling and root planing alone
- An acute infection is present (swelling, drainage, fever)
- Aggressive periodontitis is identified — a faster-progressing form often associated with specific bacteria
- There's a periodontal abscess
- A patient has a medical condition (poorly controlled diabetes, immune suppression) that makes mechanical treatment alone insufficient
Antibiotic stewardship matters — we don't prescribe antibiotics for routine gum disease because resistance is a real concern. The decision to use them is case-by-case, and we explain the reasoning when we recommend a course.
What to Watch For
Systemic antibiotics can cause side effects: stomach upset is the most common; allergic reactions are rare but possible. Take the medication exactly as prescribed and finish the full course even if symptoms improve early — stopping early is what drives antibiotic resistance. If you develop a rash, severe diarrhea, or any concerning reaction, stop the medication and call us or go to an emergency room.
Local antibiotic placements feel like having something packed into the gum pocket — usually a mild pressure sensation that fades within a few hours. Don't floss or use an interdental brush on the treated sites for the first 10 days so the medication stays in place. Brush normally elsewhere.
Most patients return for re-evaluation 4 to 6 weeks after the antibiotic course finishes. We re-measure pocket depths, check for bleeding on probing, and decide whether the response was sufficient or whether additional treatment (re-treatment, surgery, or referral to a periodontist) is needed.
Cost and Insurance Coverage
Antibiotic-related fees include the office procedure of placing the local agent and the cost of the medication itself. Systemic antibiotics are billed through your pharmacy under your drug plan. We follow the current Ontario Dental Association (ODA) Suggested Fee Guide for the office portion and give you a written estimate at the appointment.
Most extended dental insurance plans cover local antibiotic placements under basic or major periodontal services. Coverage levels vary widely; we submit claims directly where the plan permits. The federal Canadian Dental Care Plan (CDCP) covers certain periodontal procedures for eligible patients.
Antibiotic Treatment — Frequently Asked Questions
Will antibiotics alone cure my gum disease?
No. Antibiotics work on the bacterial component, but the mechanical cleaning (scaling and root planing) is what actually removes the biofilm and tartar driving the disease. Used together, they can be effective. Used in isolation, antibiotics are not.
Can I have local antibiotics if I'm allergic to penicillin?
Yes. The most common local antibiotic (Arestin, minocycline) is in the tetracycline family, not penicillin. If you have a known antibiotic allergy of any kind, tell us — we'll choose an agent that's safe for you.
How effective is local antibiotic treatment?
When used alongside scaling and root planing in specific deep pockets that aren't responding to cleaning alone, studies show pocket-depth reductions averaging an additional 0.5 to 1 mm beyond cleaning alone. That's a meaningful improvement for sites that were stuck.
Will I need it again?
Possibly. Periodontal disease is a chronic condition managed over a lifetime, not cured. Re-treatment is sometimes needed if specific pockets re-deepen. We monitor through periodontal maintenance visits (usually every 3 to 4 months) and re-treat sites as needed.
Is local antibiotic placement painful?
No. It's typically done at the end of a scaling appointment while you're still numb. After the freezing wears off, you may feel mild pressure or awareness in the treated area for a few hours.