Your teeth have been looking different lately — more yellow, grey, or even brown in patches. You have not changed your diet dramatically, and you brush regularly. If you are on regular medication, that could be the reason.
Several common medications are known to cause tooth discolouration. Some affect the outer enamel, others deposit directly inside the tooth structure. Understanding which one is affecting yours helps you know what options are available.
Tetracycline Antibiotics
Tetracycline and related antibiotics (doxycycline, minocycline) are well-known culprits. If taken during pregnancy or childhood while teeth are developing, they bind to calcium in the developing enamel and cause permanent staining. These can range from yellow to grey to brown bands across the teeth.
In adults, minocycline — sometimes prescribed for acne or rheumatoid arthritis — can cause a bluish-grey discolouration even in fully developed teeth.
Antihistamines and Antipsychotics
Common antihistamines like diphenhydramine (Benadryl) can cause staining through their effect on saliva — less saliva means more stain accumulation. Certain antipsychotics and medications for high blood pressure have also been linked to tooth discolouration.
Chlorhexidine mouthwash, often prescribed for gum disease, can cause brown staining on enamel surfaces with prolonged use. This is one of the most common medication-related staining issues and is usually reversible once the mouthwash is stopped.
Iron Supplements
Iron tablets, particularly in liquid form, can cause greyish or black staining on teeth. This is more common in children or people who take iron supplements regularly. The staining is usually surface-level and can be polished away by a dentist.
What Can Be Done About It?
The approach depends on the type and severity of the staining. Professional cleaning can often remove surface stains. For deeper staining, options include professional whitening, composite bonding, or veneers for more even coverage.
If a medication is the cause, talk to your doctor before stopping or changing anything — never stop prescribed medication without consulting your healthcare provider. Your dentist can suggest the most suitable cosmetic approach once they understand your full medical history.
Call 01323 723757 or book at www.meadsdental.com
Meads Village Dental Practice