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Your appointment in oral medicine


This section explains what you can expect when you come to the oral medicine unit.

We offer a number of clinical services and specialist clinics including:

  • general oral medicine clinics – for routine referrals and follow-up patients
  • specialist clinics – including joint clinics with dermatology, gastroenterology, rheumatology and children’s dentistry as well as clinics dedicated to persistent facial pain and dysplasia
  • skin patch testing and local anaesthetic allergy testing.

Please note that we do not have a 'walk in' emergency service. For urgent problems you should attend the acute dental clinic on the 23rd floor, Tower Wing, Guy's Hospital.

  • Changing or cancelling your appointment

    If you need to change or cancel your appointment, please tell us as soon as possible by calling the relevant telephone number.

    • New appointments tel: 020 7188 1772
    • Follow-up appointments tel: 020 7188 4343
  • Before your appointment

    Please arrive 15 minutes before your appointment time. If you are more than 20 minutes late for your appointment, you may not be seen.

    We make every effort to see you on time, but you may wish to bring something to occupy you, for example a book, in case there are unavoidable delays.

  • At your appointment

    Most routine consultations will last between 30 minutes and an hour. If your condition is more complex or you need a series of investigations it could take most of the morning or afternoon.

    If you are coming for patch testing you will need to wait 20 minutes after the patches have been placed to monitor for early reactions and after they been removed, to allow any initial irritation to subside.

    If you are coming for a biopsy appointment, please see the biopsy section below for more information.


    Our consultant clinics allow you to have a consultation with a specialist in oral medicine. If you need further investigations, we will discuss what they involve with you. They may include:

    • blood tests
    • saliva tests and swabs
    • biopsy
    • patch testing
    • x-ray, MRI scans, CT scans or ultrasound.

    Some of these may take place on the same day as your appointment. For others you may need to attend a different department on another day. We may also ask you to have some tests before coming to the clinic for a review appointment

  • After your appointment

    Once we have a diagnosis your treatment options will be discussed with you. Please feel free to ask as many questions as you need to help you understand your diagnosis and management.

  • Your biopsy appointment

    Your biopsy will be carried out under local anaesthesia, so please eat as normal before your appointment and take any medications as normal.

    Please aim to arrive about 15 minutes before your appointment. We regret that we are usually unable to see patients who arrive more than 15 minutes after their biopsy appointment time.

    We aim to see you on time but this is not always possible if there are unforeseen complications with other cases.

    On the day of your biopsy the doctor will discuss the procedure with you and confirm that you are still happy to go ahead. Your appointment should normally last about 30 minutes.

    After your biopsy your mouth may be sore, so please consider this if you plan to return to work after your appointment.

    You will receive the results of your biopsy at an appointment two-four weeks after your procedure. For suitable cases a telephone clinic will be offered.



Guy's Hospital
22nd floor, Tower Wing
Great Maze Pond
London SE1 9RT

Tower Wing  
Map to the dental department at Guy's (PDF 107Kb)


New appointments tel: 020 7188 1772

Follow-up appointments tel: 020 7188 4343