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Diploma in Orthodontic Therapy (DipOT)

Exam overview

The Diploma in Orthodontic Therapy (DipOt) enables orthodontic nurses and dental care professionals to register with the General Dental Council (GDC) as an orthodontic therapist.

To complete the diploma participants are required to undertake an approved training programme and a final assessment.



To be eligible to enter the diploma exam, candidates: 

a) will normally have been engaged in a recognised course of study in accordance with the following requirements: 

  1. any course approved by the Faculty of General Dental Practice (UK) and by the Faculty of Dental Surgery, RCS. Such courses are to comply with the Faculties’ requirements for teaching and assessment of participants, the General Dental Council’s curriculum for orthodontic therapy and any other requirements that may from time to time be specified by the GDC;
  2. any approved programme of training in a School of Dental Care Professionals or  equivalent establishment, such courses to comply with the Faculties’ requirement for teaching and assessment of participants, the General Dental Council’s curriculum for orthodontic therapy and any other requirements that may from time to time be specified by the GDC. 
  3. approved programmes should be equivalent to least 45 weeks of full time training in length.

b) must provide evidence of completion of the required training as detailed above, signed by the director of the programme.

c) must provide a verified logbook containing evidence of satisfactory completion of practical training and demonstration of competency in the areas outlined in the syllabus.

Candidates may take the assessment after completing 80% of his/her chosen programme of study, providing the requirements above can be satisfied. Please note however that the diploma will only be formally granted once the programme of study is successfully completed. 

Each candidate should give notice of his/her intention to sit the assessment by application form, which must reach the Royal College of Surgeons of England no later than the closing date on the exams calendar. Any applications received after the closing date will be returned. Please note that no concessions can be made for postal or any other delays. 

Candidates who submit an application form but are subsequently found to be ineligible to enter the assessment will have their fee returned minus administrative charges of 20%.

Exam format

a)         Logbook

All candidates will be required to submit a logbook prior to commencing the assessment. This should be sent to the Royal College of Surgeons of England before the closing date on the exams calendar. The logbook should record the clinical work undertaken during the course and must demonstrate that the appropriate level of competency has been attained in all areas as listed under level C in the syllabus document. The logbook must also be signed as verified by the programme director.

b)         Written paper

A 1.5 hour paper consisting of extended matching questions (EMQs). The written paper will cover the subject areas as listed in the syllabus document.

c)         Log book viva examination 

A structured viva voce examination of 20 minutes in length consisting of questions related to the content of the logbook.           

d)         Clinical assessment 

An objective structured clinical examination (OSCE). This will test the candidate’s clinical problem-solving ability and will cover the competencies required at level C in the syllabus.

The written and OSCE components may take place over two days; in this event candidates will normally be required to attend on both exam days.


The curriculum for this exam is based on the General Dental Council’s learning outcomes document Preparing for Practice.

Exam dates

Upcoming Exam Dates

The 'written' section of the Dip OT examination will be delivered via online remote examination - you can read our remote delivery guidance for more information. The 'cases' section of the Dip OT examination will be delivered in person at the RCS England Examination Suite.

Dip Orthodontic Therapy April 2024

Application Deadline: 29 Febraury 2024 Logbook Submission: 14 March 2024 | Written Exam Date: 19 April 2024 | Logbook viva/OSCE exam Date: 23 April 2024 | Exam Fee: £520

Download DipOT candidate guidance and application pack

Candidates should submit with their application the full assessment fee and their completed logbook which should be signed by the programme director. All completed forms should be emailed to Posted application forms will not be accepted.

Contact the exams department



For general exam queries please call 020 7405 3474 - Option 3

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