The two-way relationship
Raised blood glucose impairs the immune response and the healing of connective tissue, which makes periodontal disease more likely, more severe and faster-progressing.
The direction people know less about is the reverse. Periodontal disease is a chronic inflammatory burden, and that inflammation worsens insulin resistance. Treating it produces a measurable improvement in glycaemic control. This is why periodontal treatment is properly regarded as part of diabetic care rather than as a separate dental matter.
What changes about your appointments
Recall interval. Three to four monthly rather than six monthly, because deposits reform faster and disease progresses more quickly.
Appointment timing. Morning appointments, after your normal meal and medication, are preferred. Blood glucose is generally more stable then and the risk of a hypoglycaemic episode in the chair is lower.
Eat normally beforehand. Skipping a meal because of a dental appointment is the commonest cause of a problem during one. Bring something sugary with you.
Tell the clinic your HbA1c if you know it, and your medications. It genuinely changes planning, particularly for surgery.
Implants and surgery
Well-controlled diabetes is not a contraindication to implants. Outcomes in patients with good control are comparable to those without diabetes.
Poor control is a different matter. It impairs osseointegration and raises the risk of infection and of late peri-implantitis. Where control is poor, the sensible sequence is to improve it first, treat any periodontal disease, and then place implants, rather than to abandon the plan.
For extractions and surgery, healing is slower, so expect a longer review schedule and follow the post-operative instructions more carefully than average.
Other things worth knowing
Dry mouth is more common in diabetes, and it accelerates decay substantially because saliva is the main defence. High-fluoride toothpaste is worth asking about.
Oral thrush is more common, particularly where control is poor or you wear a denture. It presents as soreness, a burning sensation, or white patches that wipe off leaving a raw surface.
Undiagnosed diabetes sometimes first presents at a dental appointment, as unexplained rapidly progressing gum disease, persistent dry mouth, or recurrent abscesses. If that describes you and you have not been tested, it is worth a blood test.
Common questions
Can I get dental implants if I am diabetic?
Yes, where your diabetes is well controlled. Outcomes in that group are comparable to patients without diabetes. Poor control impairs healing and raises infection risk, so the sensible approach is to improve control and treat any gum disease first rather than to rule implants out.
Why does diabetes cause gum problems?
Raised blood glucose impairs the immune response and the healing of connective tissue, so periodontal disease develops faster and more severely. The relationship also runs the other way: the chronic inflammation of gum disease worsens insulin resistance, so treating it improves glycaemic control.
Should I tell my dentist I am diabetic?
Always, along with your medications and your HbA1c if you know it. It changes the recall interval, the appointment timing, the surgical planning and the expected healing time. It is not a reason for anything to be withheld from you.
When is the best time of day for a dental appointment if I am diabetic?
Morning, after your usual meal and medication, when blood glucose is generally most stable. Eat normally beforehand rather than skipping a meal, and bring something sugary with you in case you need it.
Medically reviewed
Reviewed by Dr. Dhanya Saxena, BDS, MHA, FMC, FAOI, oro-dental surgeon and aesthetic physician at Redefine Dental and Facial Aesthetic, Indira Nagar, Lucknow. Dental Council registration 20935. Last reviewed 30 August 2026.
This page is general information, not a diagnosis or a quotation. Prices are prevailing Lucknow market ranges. Your own treatment and cost are determined after an examination.