Dental implants with diabetes: what is possible, and what matters most?

Is diabetes a barrier to dental implants?

With well-controlled blood sugar, diabetes is usually not a barrier. The systematic review by Wagner and colleagues in the International Journal of Implant Dentistry (2022) evaluated 40 clinical studies and saw no obstacle to implant placement under controlled conditions.

A German S3 guideline on dental implants in diabetes, issued by the German societies for implantology and dentistry (DGI and DGZMK) in 2022, sees it the same way: in the first years there is no significant difference in implant survival, although in the long term the risk of loss appears to remain higher.

How do results differ between well and poorly controlled diabetes?

With poorly controlled diabetes, implants are lost more often and the tissue around them becomes diseased more easily. The 2023 guideline of the European Federation of Periodontology (EFP) summarises a systematic review comparing people with well and poorly controlled diabetes; in most of these studies an HbA1c of 6.1 to 8 percent counted as good and 8.1 to 10 percent as poor control.

The EFP rates the certainty of this evidence as low but still makes a strong recommendation for good blood sugar control. The German guideline is more cautious: whether the quality of control directly affects implant success is unclear because the data are inconsistent.

What is HbA1c, and which values matter?

HbA1c shows your average blood sugar over the last two to three months. According to Milton Keynes University Hospital, it measures how much glucose is attached to the haemoglobin in your red blood cells; it is given in percent or mmol/mol, and 48 mmol/mol equals 6.5 percent. The same leaflet cites a general NICE target of 48 mmol/mol (6.5 percent); Cleveland Clinic describes a value under 7 percent as a sign of good management. Your personal target is set by the doctor who treats your diabetes.

Implant research has used different cut-offs. In the review by Wagner and colleagues, one study counted under 8 percent as well controlled; over 8 percent was linked in two studies to deeper pockets, more bleeding and more bone loss around implants, and one study on sinus lifts required under 7.5 percent for participation.

Neither Wagner and colleagues nor the German guideline name a fixed HbA1c limit above which implants must not be placed. If your value is high, implant placement can be postponed until control is better. For travellers this means: clarify your value before you book, not on arrival.

Does diabetes delay implant healing?

It can, especially with poor control. According to the German guideline, osseointegration, the bonding of the implant with the bone, appears to be delayed in poorly controlled diabetes; with good control the data are mixed, and after one year implant stability does not differ from that in people without diabetes.

The guideline suggests assessing the case for immediate or early loading particularly critically in poorly controlled diabetes. For travel planning this means: expect the usual two trips several months apart; whether a temporary tooth can be fitted on the implant is decided at the consultation. More in our guide same-day dental implants.

Does diabetes raise the risk of peri-implantitis?

Mainly with poor control, yes; with good control the results are mixed: of 23 studies evaluated by Wagner and colleagues, 12 found no increased risk. The German guideline considers the direct influence of diabetes on peri-implant inflammation unclear but sees signs that the risk rises over the years. It therefore suggests informing patients about this risk before treatment and planning aftercare according to risk. An umbrella review in the Journal of Dentistry (Giok and colleagues, 2024) counts diabetes and raised blood sugar among the factors with “suggestive” evidence for peri-implantitis.

For you this means: regular check-ups with your dentist at home are part of the treatment after implants in Türkiye. How to recognise the signs is explained in our guide peri-implantitis.

What do the guidelines advise before and during implant placement?

Beyond the points above on loading and aftercare, the German S3 guideline and the EFP contain these recommendations:

1. Medical history: risk factors including diabetes should be recorded before treatment starts.
2. Control and HbA1c: the dental team should know how well your diabetes is controlled and arrange a medical review if needed; the EFP recommends improving glycaemic control before implants as a way of reducing risk.
3. Gums: gum disease should be treated before implants are placed; see our guide gum disease treatment.
4. Procedure: a single preventive dose of antibiotic before placement and an antiseptic mouth rinse around the procedure are suggested by the German guideline, with limited evidence.
5. Bone grafting: for procedures such as guided bone regeneration and sinus lifts, there is no evidence of higher complication rates in well-controlled diabetes. More in our guides bone graft before implants and sinus lift.

How is blood sugar handled on the day of surgery?

The aim is for your blood sugar to be neither too high nor too low during the procedure; planning your medicines is the job of the doctor who treats you. General advice from the sources:

1. Appointment time: Michigan Medicine recommends appointments in the morning; tell us your usual meal and medication times.
2. Eating: Michigan Medicine advises not skipping breakfast. If general anaesthetic is planned, you have to fast; according to the Centre for Perioperative Care’s patient booklet, fasting makes low blood sugar more likely, so the plan for meals and medicines is then agreed separately.
3. Medicines: how to take your diabetes medicines on the day is decided by the doctor who prescribes them. Do not change anything on your own.
4. Monitoring: Michigan Medicine recommends bringing your own glucose meter. According to the Centre for Perioperative Care, unstable blood sugar is corrected first and the procedure may be postponed.
5. Low blood sugar: according to the NHS, sweating, shaking, dizziness, hunger and blurred vision can be signs; it advises taking something that raises blood sugar quickly, such as glucose tablets or a sugary drink, and always carrying some with you. Tell the team as soon as you feel unwell.

What should you keep in mind as a person with diabetes?

• Send your HbA1c value and medication list with your preliminary assessment, and bring both to your consultation.
• Tell your GP or diabetes team about the treatment and the trip, also because of the time difference and changed meals.
• Carry your medicines, glucose meter and glucose tablets in your hand luggage.
• Clean your implants daily with a toothbrush and interdental brushes, and do not wait for your next check-up if you notice bleeding, swelling, a bad taste or loosening.

How do we plan implants for people with diabetes at Rönesans?

For a first assessment, you can send photos, any existing X-rays, your HbA1c value and your medication list on WhatsApp to +90 532 363 49 54; we reply in English and German. At your consultation at our clinic in Serdivan, we go through your diabetes and medicines together with your medical history, and the bone is assessed on a cone-beam CT (CBCT) scan. Treatment under general anaesthetic is possible if needed; the handling of meals and medicines is then planned separately in advance.

Whether a temporary tooth is possible during healing is decided at the consultation, taking your blood sugar control into account. Before treatment starts you receive a written treatment and cost plan; transfer from Istanbul and accommodation in Sapanca are included in the treatment price. On departure you receive your implant card and copies of your treatment summary and X-rays for your dentist at home; after that you can still reach us on WhatsApp (see aftercare and follow-up). The procedure is described on our dental implants page.