People will tell you to follow the ADEX criteria and you will be fine. That is good advice as far as it goes. The part nobody mentions is that schools interpret the same criteria differently, and that is where months of honest practice can still fall short of a particular programme standard.
What nearly every school scores
Most programmes use evaluation principles close to ADEX standards. These are the dimensions that appear almost everywhere.
ReductionEnough for the material, consistent across the preparation, and verifiable two ways rather than one.
TaperThe angulation the procedure calls for, held steady rather than drifting through the exercise.
Margin designPosition, definition and continuity, including round the line angles where finish lines usually fade.
SmoothnessNo chatter, no gouges, clean internal geometry, produced while cutting rather than polished on at the end.
Resistance and retention formThe preparation has to hold a restoration, not just look tidy from one angle.
Adjacent tooth protectionDamage is noticed. Concealing it is noticed more, and it is the concealment that does the real harm.
The challenge is not learning the criteria
It is understanding how a particular school interprets them. Two preparations can both meet basic standards, and one programme may accept both while another expects something slightly different.
Margin designOne school may prefer a specific margin design where another accepts a range.
Criteria weightingSome programmes weigh smoothness above taper angle, or treat adjacent tooth protection as close to disqualifying.
Time expectationsTime allowances vary noticeably between schools, and the allowance changes how the same exercise is scored.
Why candidates struggle despite months of practice
Not a lack of effort. A gap between what was practised and what was expected. Pick the one that sounds like you.
Practising without knowing what a specific school looks for
You can cut a hundred preparations against a standard that is not the one you will be marked on. The work is real, the effort is real, and it still lands outside what that programme expects.
Fix the target first: confirm the exercises, get the criteria, and only then start volume.
Repeating a technique without knowing whether it meets the standard
Without correction, repetition is not learning, it is rehearsal of whatever you are already doing. A fault practised carefully becomes permanent.
Submit work for evaluation early, while habits are still soft, rather than after months of repetition.
Small things evaluators notice immediately
A finish line that fades at the line angle, a wall a couple of degrees off, a margin polished a fraction too far. None of these feel like failures while you are working.
Photograph every preparation from the same three angles and compare across weeks. Memory flatters your work. Photographs do not.
Not having a reliable way to assess your own work
If you cannot mark your own preparation before someone else does, you cannot improve between feedback sessions, and you will not know on the day whether what you produced is good enough.
Use a fixed scorecard, every time, before anyone else sees the work. There is one further down this page.
An unsuccessful attempt is information, not a verdict
Many candidates come to us after an unsuccessful attempt. The useful question is not how hard you worked, it is which criteria specifically cost you points.
Work out what was marked down, address those areas systematically, and have the new work evaluated before the next attempt rather than after it.
Structure beats hours
What makes the difference is rarely more practice time. It is practice aimed at the right target, corrected early.
Mark your own work before anyone else does
Run this scorecard on every preparation you cut, before you submit it. The gap between your reading and the evaluator reading is your actual study plan.
What preparing with Dr. Kaur looks like
The focus is on understanding how universities evaluate preparations, and on finding the areas that will cost you points before the exam does.
Live demonstrationsDetailed preparation demonstrations, so you can see exactly what evaluators expect rather than reading about it.
University-style scoringYour work evaluated using the criteria and scoring methods universities use, by US-licensed faculty.
Individual feedbackDirect feedback on your technique, your specific mistakes and what to change before the next attempt.
The goal is not to complete more preparations. It is to understand what examiners are looking for, and to produce work that meets it consistently, which is the thing a single exam attempt actually samples.
Mastering Bench Test Preparation with Dr. Kaur
Seven live days on Zoom, one preparation at a time, each with a demonstration first and individual feedback on your own work. Then a practice week with unlimited evaluations, a competency exam and your certificates. Preparations only: no wax-ups, no wax carving, no temporary crowns.
Full curriculum in the bench test course blueprint, or see the course page.
Frequently asked questions
Who is this preparation designed for?
How is this different from practising on my own?
Can you help with a specific school requirement?
What if I have already failed a bench test?
Does the course cover wax carving or temporary crowns?
The rest of the bench test guides
Bench tests are challenging, not unpredictable
Schools evaluate against clear criteria. Tell us your target programmes and where you think you are losing points. Our Admin Team with Dr. T and Dr. Kaur will contact you over WhatsApp with a straight answer.
Last reviewed 6 October 2026. Evaluation dimensions here describe the principles programmes commonly use and how they differ in practice; no school publishes a universal rubric, so confirm your own programme expectations after your invitation arrives.