- The Credential at a Glance
- Specialty Written Exam: Format Facts
- The Eight Domains and Their Weight Ranges
- High-Value Topics to Know Cold
- Fees and the Math Behind Them
- Eligibility Pathways in Brief
- Practical Exam Quick Reference
- Scheduling, Retakes and Time Limits
- Renewal and Salary Context
- A Domain-Weighted Review Sequence
- Frequently Asked Questions
- The specialty written exam has 90 administered questions (80 scored, 10 unscored) in 1 hour 30 minutes.
- Survey, Design and Preparation for Framework is the largest domain at 25-27%; materials and equipment follows at 18-20%.
- An existing CDT adding a specialty pays $925 in exam fees: $275 written plus $650 practical.
- Practical grading uses four groups (preliminary work, design, waxing, metalwork), and all must pass in the same administration.
The Credential at a Glance
CDT-PD is this site's label for the Certified Dental Technician (CDT) credential with the Partial Dentures specialty, awarded by the National Board for Certification in Dental Laboratory Technology (NBC). It is not a standalone certificate; it sits on top of the CDT framework, which combines a comprehensive written exam, a specialty written exam, and a hands-on practical exam. If you want the plain-language definition first, see What Is CDT-PD?.
This cheat sheet condenses the facts candidates most often need to look up twice. For the deeper treatment of any single topic, follow the links to the dedicated guides as you go, and use the CDT-PD practice test site to turn the facts below into exam-day recall.
Specialty Written Exam: Format Facts
| Item | Specialty Written (Partial Dentures) |
|---|---|
| Administered questions | 90 |
| Scored / unscored | 80 scored, 10 unscored field-test items |
| Time | 1 hour 30 minutes |
| Item type | Four-option, single-best-answer multiple choice, including completion-style stems |
| Delivery | FastTest computer-based testing with MonitorEDU remote proctoring |
| Fee | $275 |
| Passing requirement | Supplied by NBC in candidate confirmation information |
Two practical implications follow from this format. First, you cannot tell which 10 items are unscored, so treat every question as if it counts. Second, at 90 questions in 90 minutes you have roughly one minute per item, which rewards fast recognition of design rules and materials facts over lengthy deliberation. Completion-style stems (an incomplete sentence you finish with the best option) are common in technical exams, so practice reading the stem as a statement and choosing the option that makes it fully true.
The passing standard itself is communicated by NBC in your candidate confirmation information rather than published as a simple percentage here. For what is and is not publicly known, read CDT-PD Passing Score 2026.
The Eight Domains and Their Weight Ranges
NBC publishes its content outline as percentage ranges, not fixed weights. Keep them as ranges: the exact number of items from each domain can vary between forms.
| Domain | Name | Weight Range |
|---|---|---|
| 1 | Create Master Casts from Stock and/or Custom Tray Impressions | 6-8% |
| 2 | Survey, Design and Preparation for Framework (Traditional or Digital) | 25-27% |
| 3 | Manufacture Refractory Cast | 3-5% |
| 4 | Manufacture Partial Dentures Frameworks | 10-12% |
| 5 | Select and Arrange Artificial Teeth and Process | 9-11% |
| 6 | Finish and Polish Partial Denture Base | 9-11% |
| 7 | Procedures for Repairs and Alterations for Partial Dentures | 11-13% |
| 8 | Selection and Application of Materials and Equipment | 18-20% |
Domains 2 and 8 together account for roughly 43-47% of the blueprint by range arithmetic, which makes them the obvious priority. Domain 3 is the smallest, but small does not mean skippable: a handful of refractory-cast questions can separate a borderline result from a comfortable one. The full breakdown lives in CDT-PD Exam Domains 2026: Complete Guide to All 8 Content Areas.
High-Value Topics to Know Cold
Domain 2: Survey, Design and Preparation for Framework (25-27%)
The heaviest domain, and the one that connects directly to the practical exam's design grading group. Expect questions on how a cast is surveyed and how that survey drives the framework.
- Surveying the master cast and establishing a path of insertion
- Identifying undercuts, guide planes and retentive versus non-retentive areas
- Clasp assembly selection and placement logic
- Major and minor connector design principles
- Rest seat and support considerations
- Traditional and digital design workflows both appear in the domain title, so be comfortable with each
Domain 8: Selection and Application of Materials and Equipment (18-20%)
The second-largest domain cuts across the whole workflow, so questions can touch any stage of production.
- Matching materials to the task: alloys, investments, waxes, acrylic resins, teeth
- Correct use and purpose of laboratory equipment
- Material handling properties and why one choice beats another in a given situation
- Safety and infection-control awareness in the laboratory
Domain 7: Repairs and Alterations (11-13%)
Third in weight, and easy to under-study because it feels like an afterthought to fabrication work.
- Deciding when a repair is appropriate versus when a new prosthesis is needed
- Adding teeth, clasps or other components to an existing partial
- Maintaining fit, occlusion and function after an alteration
Domain 4: Manufacture Partial Dentures Frameworks (10-12%)
Production-stage knowledge that pairs naturally with Domain 3's refractory cast work.
- Pattern construction and sprue/casting concepts
- Burnout, casting and recovery of the framework
- Recognizing casting defects and their likely causes
Domains 1, 3, 5 and 6 round out the blueprint: master cast creation from stock or custom tray impressions, refractory cast manufacture, artificial tooth selection, arrangement and processing, and finishing and polishing of the denture base. Because they are individually smaller, they reward efficient, checklist-style review rather than deep specialization.
Key Takeaway
Because the Domain 2 design skills are tested both in the written exam and in the practical's design group, time spent on survey and framework design pays off twice. Treat it as your anchor topic.
Fees and the Math Behind Them
| Component | Fee (USD) |
|---|---|
| Specialty written | $275 |
| Comprehensive written | $275 |
| Practical | $650 |
| Standard three-exam initial route | $1,200 |
| Existing CDT adding a specialty (written + practical) | $925 |
Those subtotals cover exam fees only. Budget separately for preparation materials, practical equipment, applicable shipping, travel, renewal and any retakes. A failed written attempt requires a new exam fee, so a retake of the specialty written alone adds another $275. The complete cost picture, including the non-exam line items, is in CDT-PD Certification Cost 2026: Complete Pricing Breakdown.
Eligibility Pathways in Brief
Baseline requirements: a high-school diploma or equivalent, working English, satisfactory ethical and legal standing, and an NBC-approved technical pathway. The pathways differ in how experience is counted:
- Standard pathway: five years of documented dental-technology education, training and/or experience. Full-time employment means at least 35 hours per week, and concurrent education and employment is not double-counted.
- Two-year CODA program graduates: may qualify with two additional nonconcurrent years of practical experience.
- Current Recognized Graduates (RGs): if the qualifying examination was passed within four years, no additional experience is needed after a two-year CODA program, or three on-the-job years after a non-CODA program.
- CE-substitution pathways: four years plus 75 CE hours, three years plus 150 hours, or two years plus 225 hours.
For the CE-substitution routes, no more than one-third of the hours may be self-study, no more than one-third may be qualified mentoring, and at least one-third must be qualifying NBC/ADA-CERP/AGD education. Expect to submit education and employment records, supervisor details, CE documentation and job-task mapping. Mentorship requires a certified supervisor and an attestation. The full walkthrough is in CDT-PD Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Practical Exam Quick Reference
The practical is hands-on: 5 hours 15 minutes of timed work, plus advance preliminary work completed beforehand. It can be taken at a suitable dental laboratory with MonitorEDU or at a scheduled volunteer-host group site. The practical fee is $650.
What the Practical Focuses On
The partial dentures practical centers on a connected set of tasks:
- Advance cast and framework preparation
- Timed design work
- Wrought-wire clasp joining
- Waxing
- Metal finishing
Work is independently graded by three examiners, and grading falls into four groups: preliminary work, design, waxing and metalwork. All four must pass, and every required practical subtest must pass in the same administration. That all-or-nothing structure is the single most important practical fact: a strong waxing result cannot rescue a failed design group. See How Hard Is the CDT-PD Exam? for how candidates tend to experience this combination of written and hands-on demands.
Scheduling, Retakes and Time Limits
- Written windows: monthly, with applications due by the 20th of the preceding month.
- Remote practical windows: January, March, May, July, September and November.
- Accommodations: requests need supporting documentation and at least 30 days' advance written notice.
- Written retakes: wait at least 30 days before reapplying and pay a new exam fee.
- Order of components: initial components may be taken in any order, but all must be passed within four years of the first pass.
- RG substitution: an eligible current RG examination substitutes for the comprehensive within its four-year allowance.
Work backward from the application deadline, not the test date. If you want a May practical, for example, your preparation clock starts months earlier because the advance preliminary work must be finished before the timed session. Current windows and deadlines are consolidated in CDT-PD Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Renewal and Salary Context
Annual Renewal
The credential renews annually with a renewal fee, a legal and ethical attestation, and 12 CE hours, broken down as follows:
| CE Category | Hours |
|---|---|
| Regulatory Standards | 1 |
| Scientific (at least 3 must be NBC-approved) | 6 |
| Additional allowable hours | 5 |
| Total | 12 |
Adding further specialties does not increase the annual CE requirement, which is a quiet advantage if you plan to hold more than one.
Salary Context
The Bureau of Labor Statistics reports a median annual wage of $49,610 for dental laboratory technicians as of May 2025. Treat this strictly as occupation-wide context: it is not a partial dentures specialty wage and it is not a measured CDT certification premium. For a careful reading of what certification may or may not do for earnings, see CDT-PD Salary Guide 2026 and Is the CDT-PD Certification Worth It?.
A Domain-Weighted Review Sequence
If you only have a short runway, sequence your review by blueprint weight and by how closely each domain links to the practical. This is the one place a schedule is worth using, and it is tied to CDT-PD's own structure.
Domain 2 (25-27%)
- Survey, path of insertion, undercuts, guide planes
- Clasp, connector and rest design rules
- Traditional and digital design workflows
Domain 8 (18-20%) and Domain 4 (10-12%)
- Materials and equipment selection by task
- Framework pattern, casting and defect recognition
Domains 7, 5 and 6
- Repairs and alterations decision-making
- Tooth selection, arrangement and processing
- Finishing and polishing the denture base
Domains 1 and 3, then full-length practice
- Master casts from stock and custom tray impressions
- Refractory cast manufacture
- Timed sets of 90 questions in 90 minutes
For a fuller method, including how to diagnose weak domains after practice sets, read the CDT-PD Study Guide 2026, and take timed sets on the practice test platform so the one-minute-per-question pace feels routine.
Frequently Asked Questions
The specialty written exam administers 90 questions: 80 scored and 10 unscored field-test items, with 1 hour 30 minutes allowed. Questions are four-option, single-best-answer multiple choice, including completion-style stems.
Survey, Design and Preparation for Framework (Traditional or Digital) is the largest domain at 25-27%, followed by Selection and Application of Materials and Equipment at 18-20%. NBC publishes these as ranges rather than fixed weights.
An existing CDT adding a specialty pays $925 in exam fees: $275 for the specialty written and $650 for the practical. A candidate taking the standard three-exam initial route pays $1,200. Preparation, equipment, shipping, travel, renewal and retakes are budgeted separately.
You must wait at least 30 days before reapplying and pay a new exam fee. Remember that all initial components must be passed within four years of the first pass.
Renew annually with the renewal fee, a legal and ethical attestation, and 12 CE hours: 1 in Regulatory Standards, 6 Scientific (at least 3 NBC-approved) and 5 additional allowable hours. Additional specialties do not raise the annual CE requirement.
Use this page as your quick-reference card, then confirm any date, fee or policy against the current NBC handbook and application before you apply, since NBC is the authority on all of it. For the broader picture of where this credential leads, see CDT-PD Jobs, and keep the practice question bank close as you move from reviewing facts to testing them.