Dental implants · Diabetes · Long term
Peri-implantitis:
the risk that matters most long term.
Most implants that run into trouble years later do so through peri-implantitis: inflammation of the gum around the implant with loss of the bone that holds it. Diabetes raises the risk, but the strongest risk factors are ones you can do something about.
Quick answer
Does diabetes increase the risk of peri-implantitis?
Probably, yes. A 2017 meta-analysis found peri-implantitis about 50% more likely with diabetes (risk ratio 1.46), and a 2018 systematic review found an odds ratio of 2.5. A 2025 Swedish national register study also found higher rates with type 1 and type 2 diabetes. The 2017 World Workshop judged the evidence on diabetes inconclusive, but found strong evidence for three other risk factors: a history of periodontitis, poor plaque control and no regular maintenance. Those three are where prevention starts.
RR 1.46
Peri-implantitis with diabetes
95% CI 1.21–1.77; 12 studies
Monje, J Clin Periodontol 2017
OR 2.5
Diabetes as a risk factor
Smoking OR 1.7 in the same review; 57 studies
Dreyer, J Periodontal Res 2018
21.1% vs 15.2%
Peri-implantitis, type 1 vs none
Swedish national register
Trullenque-Eriksson, JCP 2025
HR 1.36
Peri-implantitis incidence, type 2
95% CI 1.02–1.82
Trullenque-Eriksson, JCP 2025
3
Risk factors with strong evidence
Past periodontitis, poor plaque control, no maintenance
2017 World Workshop
−0.43%
HbA1c after gum treatment
At 3–4 months; moderate certainty
Cochrane 2022
Two stages
Catch it early.
Peri-implant mucositis
Inflammation of the gum around the implant without bone loss: redness, swelling, bleeding when brushed or probed. Treated with professional cleaning and better home care.
Caught at check-ups
Peri-implantitis
Inflammation plus loss of the supporting bone, seen on X-rays. Needs treatment by a dentist or periodontist, sometimes surgery. Left alone, it can cost the implant.
Needs treatment
Maintenance
Professional cleaning and checks at the interval your dentist sets, plus careful daily cleaning around the implant.
For life
Risk factors
What raises the risk, and how strong the evidence is
The 2017 World Workshop, which set today's classification of gum and implant disease, found strong evidence for three risk factors and called the data on diabetes and smoking inconclusive. Meta-analyses since then, and a large Swedish register study, point to diabetes raising the risk, so it's sensible to treat it as a real but secondary factor.
| Factor | Evidence | What you can do |
|---|---|---|
| History of periodontitis | Strong (2017 World Workshop) | Have gum disease treated before implants, and keep it under control |
| Poor plaque control | Strong (2017 World Workshop) | Clean around the implant daily with the tools your hygienist shows you |
| No regular maintenance | Strong (2017 World Workshop) | Professional cleaning and checks for life, at the interval your dentist sets |
| Diabetes / high glucose | RR 1.46 (Monje 2017); OR 2.5 (Dreyer 2018); inconclusive per 2017 Workshop | Keep HbA1c in your target range |
| Smoking | OR 1.7 (Dreyer 2018); inconclusive per 2017 Workshop | Stop smoking |
Gum disease and diabetes?
Start with gum treatment and an endocrinology review. It protects a future implant, and it may nudge your HbA1c down too.
Gum disease and diabetes
Why the gums come first
Gum disease and diabetes affect each other, and past periodontitis is one of the strongest predictors of trouble around implants. That's why a careful team treats the gums before placing implants. There's a bonus: a 2022 Cochrane review of 35 trials found gum treatment lowered HbA1c by about 0.43 percentage points at three to four months, and 0.30 at six months. That doesn't replace diabetes treatment, but it helps.
In a 2017 meta-analysis, high glucose among non-smokers was linked to a 3.4-fold higher risk of peri-implantitis, while the link with milder, reversible mucositis was not significant. In other words, glucose control seems to matter most for the stage that costs bone.
Where treatment happens
University dental hospitals
with periodontal and implant care.
Peking University School and Hospital of Stomatology 北京大学口腔医院
National Center for Stomatology (2020); International Clinical Division provides treatment in English
Shanghai Ninth People's Hospital 上海交通大学医学院附属第九人民医院
National Center for Stomatology (2020); oral implantology department
West China Hospital of Stomatology, Sichuan University 四川大学华西口腔医院
National Center for Stomatology; national clinical research centre for oral diseases
Stomatology Hospital, Zhejiang University School of Medicine 浙江大学医学院附属口腔医院
Zhejiang University's dental hospital, established 1976
FAQ
Peri-implantitis — answered.
- What are the warning signs of peri-implantitis?
- Bleeding or swelling of the gum around the implant, pus, a bad taste, gum receding to show metal, or the implant feeling loose. Some cases have no symptoms until bone loss shows on an X-ray, which is why regular check-ups matter. See a dentist promptly if you notice any of these.
- How often should I have my implants checked with diabetes?
- Your dentist sets the interval based on your gums, your glucose control and how your implants look over time. Regular maintenance is one of the three risk factors with strong evidence.
- Can peri-implantitis be treated?
- Yes, especially early. Mucositis is reversible with cleaning and better home care. Peri-implantitis needs treatment by a dentist or periodontist, sometimes surgery; the earlier, the better the outlook.
- If I have implants placed abroad, who maintains them?
- Your dentist at home. You leave with records naming the implant brand, model and size, plus X-rays, so your dentist can maintain and, if needed, treat them. Ask your home dentist before you travel whether they'll look after implants placed abroad.
Related guides
Dental implants with diabetes (hub)
Who is a candidate, what the evidence says, and how treatment is planned.
Read the guideHbA1c and implant eligibility
Why 8% is the practical line, and what to do if you're above it.
Read the guideImplant success rates with diabetes
What the meta-analyses found, including where they disagree.
Read the guideSurgery day: glucose, medicines, antibiotics
Target glucose, SGLT2 and GLP-1 medicines, antibiotics and osteoporosis drugs.
Read the guideHealing time and immediate loading
How long implants take to settle, and when same-day teeth are reasonable.
Read the guideDiabetes dental tours
Gum care and implants in China with an endocrinology review on the same trip.
Read the guideDiabetes care in China
Endocrinology programs and top centres.
Read the guideSources
References
- Schwarz F, et al. Peri-implantitis. J Clin Periodontol. 2018;45 Suppl 20:S246–S266 (2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases).
- Monje A, et al. Association between diabetes mellitus/hyperglycaemia and peri-implant diseases: systematic review and meta-analysis. J Clin Periodontol. 2017;44(6):636–648.
- Dreyer H, et al. Epidemiology and risk factors of peri-implantitis: a systematic review. J Periodontal Res. 2018;53(5):657–681.
- Trullenque-Eriksson A, et al. Association between diabetes and peri-implantitis: evidence from a Swedish register-based study. J Clin Periodontol. 2025;52(12):1650–1661.
- Simpson TC, et al. Treatment of periodontitis for glycaemic control in people with diabetes mellitus. Cochrane Database Syst Rev. 2022;4:CD004714.
Treat the gums first,
then the implant.
Our diabetes dental tours start with an endocrinology review and gum treatment at a university dental hospital, with implants planned once your gums and glucose are ready.
This page is for general education only and is not medical advice. Whether implants suit you depends on your glucose control, gum and bone health, medicines and other conditions, and only your dentist, implant surgeon and diabetes doctor can decide. Study results describe groups of patients, not what will happen to you. Never stop or change a diabetes medicine without your doctor's advice.
Published 9 October 2026 · Figures checked against the cited sources by the PandaTouring Care editorial team · Editorial policy