SLE (SDLE) Orthodontics Exam 2026: Eligibility & MCQs

SLE (SDLE) Orthodontics Exam Quick Summary

The Saudi Licensing Exam (SDLE) Orthodontics specialty exam covers dentofacial orthopedics, interceptive treatment, appliance biomechanics, and related orthodontic topics, with 200 MCQs split across two 100-question papers, 4 hours total testing time, and a passing score of 65% for Registrar level (70-75% for Senior Registrar).

SDLE (Saudi Licensing Exam) Orthodontics Specialty Exam

The Saudi Commission for Health Specialties (SCFHS) administers this specialty exam, part of the Saudi Dental Licensure Examination (SDLE) framework, to evaluate a candidate's clinical skill and diagnostic ability across orthodontic treatment -- the diagnosis, prevention, and correction of malpositioned teeth and jaws using appliances, braces, and related interventions. It is required for orthodontists applying for an SCFHS professional classification and license to practice in Saudi Arabia.

Eligibility criteria for the SLE (SDLE) Orthodontics exam

To apply for the SDLE Orthodontics specialist exam, candidates are generally expected to meet the following:

Primary dental degree: A recognized BDS, DMD, or equivalent dental degree from an accredited institution.

Specialization in Orthodontics: A recognized postgraduate qualification in Orthodontics -- Master's, Diploma, or equivalent -- from an accredited institution, including a recognized residency program.

Post-qualification clinical experience: Generally at least 2 years of clinical practice in orthodontics after completing your specialization -- notably shorter than the roughly 3-year requirement used by DHA and DOH for the same specialty, though your own exact requirement should be confirmed directly with SCFHS.

Valid license & Good Standing Certificate: An active license to practice in your home country (or country of last employment), plus a Certificate of Good Standing typically valid within the last 6 months.

DataFlow Primary Source Verification & Mumaris Plus registration: All educational, professional, and licensing documents verified through DataFlow, plus an active registration with a valid eligibility number on SCFHS's Mumaris Plus portal before booking your exam.

Confirm your own eligibility status directly with SCFHS rather than assuming a general figure applies to you.

SLE (SDLE) Orthodontics exam exemption criteria

Possible exam exemption

Orthodontists holding credentials such as MOrth RCS, FRCD(C) Orthodontics, or American Board of Orthodontics (ABO) certification are generally considered to have a strong chance of qualifying for an SDLE exemption. Exemption is never automatic, however -- verify your own exemption status directly with SCFHS before planning your application timeline around it.

SLE (SDLE) Orthodontics exam syllabus & weightage

The exam draws from 13 subject areas, with the heaviest weighting on the following:

Subject Area

Approximate %

Comprehensive Treatment in Preadolescents/Adolescents

~16%

Interceptive Orthodontic Treatment

~14%

Adult and Adjunctive Orthodontics

~10%

Orthognathic Surgery

~8%

Cephalometric Analysis

~8%

Biomechanics and Biology of Tooth Movement

~8%

Remaining topics (Special Considerations, Growth & Development, Craniofacial Deformities, Etiology of Malocclusion, Retention & Stability, Patient Safety, Professionalism & Ethics)

~5-6% each

Comprehensive treatment in preadolescents/adolescents and interceptive orthodontic treatment together make up nearly a third of the exam -- these two areas reward the most preparation time. Most questions are clinical scenario-based MCQs with a single correct answer.

SLE (SDLE) Orthodontics study material & questions

Official past papers aren't released publicly, but our Qbank compiles recall-based questions from actual test takers, reviewed by expert doctors.

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SLE (SDLE) Orthodontics exam format

200

MCQs (2x100)

4 hours

Time allowed

65-75%

Registrar / Senior Registrar

The exam is split into two 100-question papers over 4 hours total, excluding a 30-minute break between sections. Scoring 65% qualifies you for Registrar-level classification, while Senior Registrar level requires a higher score in the 70-75% range depending on the current published standard -- confirm the exact current threshold directly with SCFHS. Note that the exact question count, duration, and passing threshold differ from DHA (150 MCQs/60%) and DOH (100 MCQs/65%) versions of the same specialty exam.

Preparation tips for the SLE (SDLE) Orthodontics exam

Prioritize adolescent comprehensive treatment

Comprehensive treatment in preadolescents/adolescents and interceptive treatment together make up close to a third of the exam -- build your revision schedule around them first.

Master appliance biomechanics

Principles of tooth-movement biomechanics underpin many scenario questions -- a solid grasp here pays off across multiple topic areas.

Pace yourself across both papers

With 100 questions per paper across 4 hours total, build that pace into your practice sessions and use the break to reset rather than rush into the second paper.

Aim for Senior Registrar if you can

Since the same exam can qualify you for either classification level depending on your score, extra preparation toward the higher threshold can improve your professional standing.

Sample Practice MCQs

Test your knowledge with these original clinical scenario-style questions. Tap a question to reveal the answer.

> Question 1: Interceptive Orthodontic Treatment

A growing patient presents with a Class III skeletal relationship due to maxillary retrusion. What is the most appropriate interceptive treatment approach?

Answer: A protraction facemask (reverse-pull headgear) to advance the maxilla during the active growth period.

Explanation: Maxillary retrusion-driven Class III cases respond best to early orthopedic correction while growth potential remains. A protraction facemask applies forward traction to the maxilla, making it the standard interceptive choice over purely dental camouflage approaches, which are better suited to non-growing patients.

> Question 2: Biomechanics and Biology of Tooth Movement

During space closure with a sliding mechanics technique, what type of tooth movement is most likely to occur if excessive force is applied without adequate anchorage control?

Answer: Uncontrolled tipping of the anchor teeth, with possible loss of anchorage (anchor teeth moving instead of the intended teeth).

Explanation: Excessive force relative to the root surface area available for anchorage causes anchor teeth to tip and drift, undermining the intended space closure. Proper anchorage reinforcement (e.g. temporary anchorage devices) is used to prevent this reciprocal, unwanted movement.

> Question 3: Retention and Stability

A patient completes active orthodontic treatment for a mild lower incisor crowding case. What is the most important factor in preventing post-treatment relapse?

Answer: Long-term (often indefinite) retainer wear, since the periodontal and soft-tissue fibers around repositioned teeth remodel slowly and incisor crowding has a well-documented tendency to relapse with age regardless of original severity.

Explanation: Relapse of lower incisor alignment is common even in mild cases and is influenced by ongoing growth, soft-tissue pressures, and third molar presence -- not just how the case was originally treated. Consistent retainer wear, rather than treatment technique alone, is the primary safeguard against relapse.

Frequently Asked Questions

> What does the SLE (SDLE) Orthodontics exam cover?

It covers comprehensive treatment in preadolescents/adolescents, interceptive orthodontic treatment, adult and adjunctive orthodontics, orthognathic surgery, cephalometric analysis, biomechanics and biology of tooth movement, special considerations, growth and development, craniofacial deformities, etiology of malocclusion, retention and stability, patient safety, and professionalism and ethics.

> How many questions are in the SLE (SDLE) Orthodontics exam?

200 multiple-choice questions, split across two 100-question papers, with 4 hours total to complete both (excluding a break between papers).

> What is the passing score for the SLE (SDLE) Orthodontics exam?

Candidates generally need 65% for Registrar-level classification, with Senior Registrar level requiring 70-75% depending on the current published standard. This differs from DHA (60%) and DOH (65%) versions of the same specialty exam, so don't assume figures from another Gulf authority apply to SDLE.

> Can orthodontists be exempted from the SDLE?

Possibly, and often with good prospects. Orthodontists holding credentials such as MOrth RCS, FRCD(C) Orthodontics, or American Board of Orthodontics certification are generally considered strong candidates for exemption -- but it is never automatic and must be confirmed directly with SCFHS.

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