1. What Is the Clinical Skills Component? – Purpose and Structure
The Clinical Skills Component is the practical, hands-on portion of the National Dental Examination of Clinical Competence. It is designed to assess whether you can perform common dental procedures to the clinical standards expected of a dentist entering practice in Canada.
The CSC is administered at the NDECC Test Centre in Ottawa, Ontario – a purpose-built facility that includes a simulation clinic with fully equipped dental operatories and manikins. Unlike the AFK or ACJ, which are computer-based multiple-choice exams, the CSC requires you to physically perform dental procedures on typodont teeth.
The CSC is the final gate before the NDEB Certificate. Its low pass rate – 38.33% in 2025 – reflects the high standard of clinical competence required. The NDEB has confirmed through a formal consultation and review process that the passing standard is the absolute minimum required of a dentist entering practice in Canada.
The CSC Is the Hardest Part of the Equivalency Process
In 2025, only 38.33% of candidates passed the Clinical Skills Component. That is significantly lower than the ACJ (62.44%), the AFK (52.29%), and the Situational Judgement Component (57.46%). If you are preparing for the NDECC, the CSC should be your primary focus. Most candidates fail the CSC on their first attempt – 897 of 1,667 candidates in 2025 were repeat test takers.
Full Equivalency Process pathway – AFK → ACJ → NDECC
See where the CSC sits inside the full Canadian equivalency pathway.
2. The Seven Clinical Requirements – What You Must Perform
The CSC requires you to complete seven clinical requirements in an eight-hour period. The specific list of requirements is published in the NDECC Protocol, effective September 30, 2024.
Complete CSC Procedure List:
| Procedure | Type | Key Focus Areas |
|---|---|---|
| Class II amalgam preparation | Preparation | Conservative tooth reduction, proximal box form, retention |
| Class II amalgam restoration | Restoration | Matrix placement, condensation, carving, burnishing |
| Class II composite restoration | Restoration | Sectional matrix, bonding protocol, incremental curing |
| Class IV composite restoration (anterior) | Restoration | Shade matching, incisal edge contour, surface finish |
| Full crown preparation | Preparation | Axial reduction, margin quality, occlusal clearance |
| Provisional restoration | Restoration | Direct provisional crown fabricated on the crown preparation |
| One additional clinical skill | Varies | Specified in the NDECC Protocol |
The NDECC includes one amalgam restoration (Class II) and two composite restorations (Class II and Class IV), reflecting the shift in Canadian dental practice where composite use now exceeds amalgam. However, amalgam remains in the blueprint because all accredited Canadian dental programmes continue to teach its use, and it remains clinically indicated for certain patient populations.
The Provisional Restoration requirement is performed on the crown preparation prepared by the examinee, mirroring real-world clinical workflow.
| Requirement | Type | Time Allocation (approx.) | Critical Success Factors |
|---|---|---|---|
| Class II amalgam preparation | Preparation | 25–30 minutes | Proximal box retention, isthmus width, pulpal floor depth |
| Class II amalgam restoration | Restoration | 35–45 minutes | Matrix adaptation, condensation, proximal contour, marginal ridge |
| Class II composite restoration | Restoration | 40–50 minutes | Sectional matrix, bonding protocol, proximal contact, occlusal anatomy |
| Class IV composite restoration | Restoration | 30–40 minutes | Shade selection, incisal edge form, polish |
| Full crown preparation | Preparation | 45–60 minutes | Axial reduction (1.5–2.0 mm), margin quality, taper |
| Provisional restoration | Restoration | 30–45 minutes | Marginal seal, contour, occlusal fit |
| Additional clinical skill | Varies | Varies | Per Protocol |
The Seventh Requirement – Check the Protocol
The seventh clinical requirement varies and is specified in the NDECC Protocol effective September 30, 2024. Common additional skills include additional preparation types, endodontic access, or periodontal procedures. Download the Protocol from the NDEB exam resources page before you begin preparing. Do not assume you know what the seventh requirement is – it may change.
Complete NDECC Protocol guide – blueprint and grading criteria
Use the full protocol article alongside this one so you practise against the real scoring logic.
3. Time Allocation – Eight Hours Is More Than Enough
One of the most common concerns among CSC candidates is whether eight hours is sufficient to complete all seven procedures. The NDEB conducted a formal review of this question following the first series of NDECC results.
During the development of the NDECC, the NDEB consulted with four different groups of experts regarding the time required to complete the clinical skills requirements. These groups recommended that four to five hours would be adequate for well-prepared candidates to complete the seven clinical skills requirements. The decision was made to allot eight hours for the Clinical Skills component – double the amount of time recommended by the experts consulted.
Over the past years, the NDEB has received feedback from candidates indicating that they had sufficient time to complete the clinical skills requirements. The NDEB concluded that the eight-hour allotment is appropriate as it allows for more than sufficient time for a well-prepared candidate to complete the examination.
What this means for you:
Do not rush.
You have more time than you think.
Use the extra time to double-check margins, contours, and occlusal
contacts.
If you are finishing procedures significantly faster than the
suggested times, you are likely rushing and may be making errors.
Speed Does Not Equal Competence
The CSC is not a speed test. The NDEB explicitly states that four to five hours is adequate for well-prepared candidates, and you are given eight hours. Taking extra time to refine your margins, check your proximal contacts, and polish your restorations is not penalised. Rushing and making preventable errors is penalised.
Ottawa Test Centre logistics – exam day flow and equipment
Review the full test-centre logistics before you travel for the CSC.
4. Grading Criteria – How You Are Assessed
The NDECC Protocol publishes the grading criteria for each clinical requirement. The NDEB has confirmed that the passing standard is accurate and in accordance with accepted psychometric processes.
| Category | Meaning | Result |
|---|---|---|
| Competent | Performance meets or exceeds the standard | Pass |
| Minimally Competent | Performance meets the minimum acceptable standard | Pass |
| Not Competent | Performance falls below the minimum standard | Fail |
To receive a passing grade on a requirement, you do not have to produce an ideal result. You must demonstrate minimal competence with no major errors.
What “minimal competence with no major errors” means in practice:
Class II amalgam restoration: The restoration must have adequate proximal contour, a properly condensed marginal ridge, and no open margins. The amalgam must be properly condensed with no voids.
Class II composite restoration: The sectional matrix must be properly placed. The bonding protocol must be followed correctly. The restoration must have an adequate proximal contact and proper occlusal anatomy.
Class IV composite restoration: The shade must match adjacent teeth. The incisal edge contour must be correct. The surface must be properly finished and polished.
Crown preparation: The axial reduction must be adequate (typically 1.5–2.0 mm for all-ceramic crowns). The margin must be smooth and continuous. The taper must be appropriate.
Provisional restoration: The provisional crown must have a good marginal seal, proper contour, and adequate occlusal fit.
The passing standard for the Clinical Skills component is the absolute minimum required of a dentist entering practice in Canada. It was also determined that a dentist entering practice should be able to perform the seven basic clinical procedures at a minimally competent level on the same day.
You Fail One – You Retake All
If you receive a failing grade on one or more clinical requirements, you must repeat the entire Clinical Skills component. There is no option to retake only the failed procedure. This policy is deliberate – the NDEB expects a dentist entering practice to perform all basic procedures competently on the same day. Do not neglect any procedure in your preparation.
Retake strategy after CSC failure – what to do next
If you fail the CSC, this is the next article you should read.
5. 2025 Pass Rate Data – What the Numbers Tell You
The NDEB publishes annual results for all Equivalency Process examinations. The 2025 data for the Clinical Skills Component is sobering.
| Category | Total Candidates | Pass % | # Candidates | # Pass |
|---|---|---|---|---|
| All CSC candidates | 1,667 | 38.33% | – | – |
| First-time test takers | – | 40.65% | 770 | 313 |
| Repeat test takers | – | 36.34% | 897 | 326 |
Key insights from the 2025 data:
The CSC is the lowest-passing exam in the Equivalency Process.
The ACJ pass rate was 62.44%, the AFK was 52.29%, and the
Situational Judgement Component was 57.46%.
Repeat test takers perform slightly worse than first-time
takers.
Over half of CSC candidates (897 of 1,667) are repeat test takers.
The NDEB‘s consultation and review process confirmed that the passing standard is accurate and that the low pass rate reflects the actual standard required for entry into Canadian dental practice, not a flaw in the examination.
First-Time Pass Is Your Goal
While you can retake the CSC an unlimited number of times within your five-year window, each retake costs $3,250 plus travel to Ottawa (another $1,500–$2,500). The repeat pass rate is actually slightly lower than the first-time pass rate – meaning your odds of passing do not improve with repetition. Invest in quality preparation and aim to pass on your first attempt.
Total investment breakdown including CSC retake costs
See the full cost picture before you decide whether to risk a rushed attempt.
6. Common Failure Points – What Typically Goes Wrong
Understanding why candidates fail the CSC is essential to structuring an effective preparation strategy.
| Failure Point | Affected Procedure | Why It Happens | How to Avoid |
|---|---|---|---|
| Under-reduction (axial walls) | Crown preparation | Conservative training from non-Canadian programmes | Practise to specific depth measurements (1.5–2.0 mm) |
| Open or tight proximal contact | Class II amalgam, Class II composite | Improper matrix adaptation or condensing technique | Practise with sectional matrices; verify contact with floss |
| Marginal overhang or gap | Class II amalgam, Class II composite | Poor burnishing or carving technique | Use proper finishing instruments; check margins under magnification |
| Poor occlusal anatomy | Class II composite, Class IV composite | Rushing without referencing anatomy | Study occlusal anatomy charts; practise carving |
| Shade mismatch | Class IV composite | Incorrect shade selection under exam lighting | Practise shade matching under different lighting conditions |
| Provisional crown marginal gap | Provisional restoration | Inadequate impression or trim technique | Ensure full coverage; trim carefully with burs |
The most common reason for CSC failure is under-reduction on crown preparations. Many internationally trained dentists were taught conservative preparation techniques that do not meet the Canadian standard. The NDECC requires specific axial reduction measurements – typically 1.5–2.0 mm for all-ceramic crowns. If your preparation is under-reduced, you will fail regardless of other qualities.
No Diagnostic Feedback – You Must Self-Diagnose
The NDECC results are simply listed as pass or fail. There is no description of what criteria caused a project to fail. This means you must self-diagnose your failure points. Compare your work against the NDECC Protocol grading criteria. If possible, work with an experienced instructor who can identify your specific weaknesses. Practise each procedure repeatedly and have someone who has passed the CSC evaluate your work.
NDECC Protocol – full grading criteria for each procedure
Go back to the protocol article when you need the official grading frame beside your practice work.
7. The Debate Over Amalgam – Why It Is Still Tested
Candidates taking the NDECC have questioned the relevance of the Class II Amalgam Restoration requirement and raised concerns about the materials provided to complete the amalgam restoration.
The NDEB responded through its consultation and review process. The inclusion of amalgam restorations in the Clinical Skills component was reaffirmed for several reasons:
All accredited Canadian dental programmes continue to teach the
use of amalgam.
Amalgam remains the first choice for certain patient populations,
including high-caries-risk patients and situations where moisture
control is challenging.
Removing amalgam from the exam would create a gap between the
licensing examination and the curriculum taught in Canadian dental
schools.
The NDEB has confirmed that the Class II amalgam restoration requirement will remain in the CSC blueprint. Candidates should prepare for this procedure as thoroughly as any other.
Definitive NDECC 2026 guide – components, fees, and registration
Use the complete guide if you want the broader exam and registration context around the CSC.
8. CSC Preparation Strategy – How to Pass on Your First Attempt
The low first-time pass rate (40.65%) indicates that many candidates are under-prepared for the CSC. Here is a proven preparation strategy.
Step 1 – Read the NDECC Protocol (Week 1)
Download the NDECC Protocol effective September 30, 2024 from the NDEB exam resources page. Read the grading criteria for every clinical requirement. Understand what “minimal competence” looks like for each procedure.
Step 2 – Practise each procedure individually (Weeks 2–8)
Practise each of the seven clinical requirements repeatedly on typodont teeth. Use the same typodont teeth and handpieces (Kavo) used at the NDECC Test Centre. Focus on the most common failure points: crown preparation reduction, proximal contacts, and marginal adaptation.
Step 3 – Get objective feedback
Work with an NDECC preparation course instructor who can evaluate your typodont work against NDEB standards. Join a study group with other candidates who have passed the CSC. If possible, have a Canadian-trained dentist or recent NDECC passer evaluate your preparations.
Step 4 – Complete mock exams under timed conditions (Weeks 9–12)
Before your CSC attempt, complete a full eight-hour mock exam on typodont teeth. Use the same time allocations as the real exam. Have an instructor or experienced peer grade your work using the NDECC Protocol criteria.
Step 5 – Register strategically
Do not register for the CSC until you are consistently passing mock exams. However, do not wait too long – your five-year clock is running. Monitor the NDECC calendar for upcoming sessions and register at your tier-appropriate time.
The Cost of Being Unprepared
A failed CSC attempt costs you: $3,250 (exam fee) + $1,500–$2,500 (travel and accommodation) = $4,750–$5,750. If you need a 1-month preparation course refresher at $900, your total failure cost approaches $6,500. Investing in quality preparation upfront is far cheaper than paying for a retake.
CSC exam day – what to bring and what to expect
Review the Ottawa logistics article before finalising your trip.
9. What the NDEB Provides – Instruments, Materials, and Supplies
The NDECC Test Centre is a fully equipped facility. You do not need to bring your own instruments, handpieces, burs, or materials. The NDEB provides everything required for the Clinical Skills Component.
| Category | Items Provided |
|---|---|
| Handpieces | High-speed and low-speed handpieces (Kavo) |
| Burs | Complete set of burs for cavity preparation and crown preparation |
| Instruments | Mirrors, explorers, probes, cotton pliers, condensers, carvers, burnishers |
| Restorative materials | Amalgam capsules, composite resin, bonding agent, curing light |
| Procedural supplies | Matrix bands and retainers, sectional matrices, celluloid strips |
| PPE | Disposable gown, gloves, mask |
| Typodont | Manikin head with typodont teeth |
The NDECC Practical Guide contains detailed information about the facilities, instruments and materials provided. Download it from the exam resources page before your exam.
Do Not Bring Your Own Instruments
The NDEB provides all clinical equipment and materials. Your own instruments, handpieces, burs, and restorative materials will not be allowed into the testing area. Practise with the same types of instruments and handpieces that the NDEB provides. Familiarity with the equipment is a significant advantage.
10. CSC vs SJC – Understanding the Two Components
The NDECC has two components: the Clinical Skills Component (this article) and the Situational Judgement Component. They are fundamentally different in format and grading.
| Comparison | Clinical Skills Component | Situational Judgement Component |
|---|---|---|
| Format | Hands-on on manikins | Computer-based scenarios |
| Duration | One full day (eight hours) | Approximately 4–5 hours |
| Number of items | Seven clinical requirements | 10 stations (two per blueprint category) |
| Passing requirement | Pass all clinical requirements | Pass 6 of 10 stations AND at least one per category |
| Pass rate (2025) | 38.33% | 57.46% |
| Retake policy | Must retake all if any fail | Only retake failed stations |
Most candidates take both components during the same visit to Ottawa to minimise travel costs. However, you can take them separately if needed.
Complete Situational Judgement Component guide – domains and question types
Read the SJC article next so you understand both halves of the NDECC properly.
How DentAIstudy helps
DentAIstudy helps NDECC candidates turn the CSC into a clearer procedure-by-procedure preparation plan.
- Break the seven requirements into practical training targets
- Stay organised across grading criteria, timing, and weak points
- Turn protocol language into cleaner mock-exam practice
- Reduce avoidable failures caused by rushing or under-preparing
Related NDECC articles
References
- National Dental Examining Board of Canada | 2025 NDECC pass rates: Clinical Skills 38.33% (1,667 candidates, 40.65% first-time, 36.34% repeat); ACJ 62.44%; AFK 52.29%; SJC 57.46%
- National Dental Examining Board of Canada | Eight-hour CSC time allocation (expert recommendation 4–5 hours, NDEB doubled to 8); passing standard “minimal competence with no major errors”; amalgam relevance reaffirmed; if any requirement fails must retake entire CSC
- National Dental Examining Board of Canada | CSC blueprint: one amalgam restoration (Class II), two composite restorations (Class II and Class IV), crown preparation, provisional restoration performed on the crown preparation
- National Dental Examining Board of Canada | NDECC format, Protocol effective September 30, 2024, Practical Guide, withdrawal fee 50%, five-year rule
- PrepDoctors | Seven clinical requirements over two days (CSC day one, SJC day two)