- The Credential in One Paragraph
- The Numbers at a Glance
- Eligibility and Pathway Facts
- Blueprint: Seven Domains, Seven Ranges
- Question Style and Testing Rules
- Practical Exam Snapshot
- Money Facts: Fees and Budgeting
- Windows, Deadlines, Retakes
- Renewal Requirements
- Implant Topics Worth Memorizing
- Sequencing Your Review Around the Blueprint
- FAQ
- The specialty written exam has 90 administered questions (80 scored, 10 unscored) in 1 hour 30 minutes, closed-book.
- Preliminary and Diagnostic Work Up is the heaviest domain at 20-22% of the blueprint.
- An existing CDT adding Implants pays $925 in exam fees ($275 written plus $650 practical).
- Annual renewal requires 12 CE hours, and adding specialties does not raise that number.
The Credential in One Paragraph
CDT-I is this site's shorthand for the Implants specialty of the Certified Dental Technician (CDT) credential, awarded by the National Board for Certification in Dental Laboratory Technology (NBC). It is not a standalone license and it is not any other credential that happens to share the abbreviation. If you want the naming background, see What Does CDT-I Stand For? and What Is CDT-I Certification?.
This page condenses the facts worth keeping in front of you during review. For depth on any item, follow the links to the dedicated guides, and when you are ready to test recall, the CDT-I practice test hub is built for that.
The Numbers at a Glance
| Component | Questions / Work | Time | Exam Fee (USD) |
|---|---|---|---|
| Specialty written (Implants) | 90 administered: 80 scored + 10 unscored field-test | 1 hour 30 minutes | $275 |
| Comprehensive written | 170 administered: 160 scored + 10 unscored | 2 hours 45 minutes | $275 |
| Practical | Hands-on work plus advance preliminary work | 5 hours 15 minutes timed | $650 |
The standard three-exam initial route totals $1,200 in exam fees. An existing CDT adding a specialty pays $925, covering the specialty written and the practical. A deeper breakdown lives in CDT-I Certification Cost 2026: Complete Pricing Breakdown.
Eligibility and Pathway Facts
Baseline requirements: a high-school diploma or equivalent, working English, satisfactory ethical and legal standing, and an NBC-approved technical pathway. The pathways are where candidates get tripped up, so here is the compact version.
- Standard pathway: five years of documented dental-technology education, training and/or experience.
- Full-time definition: at least 35 hours per week. Concurrent education and employment is not double-counted.
- Two-year CODA 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 routes: four years plus 75 CE hours, three years plus 150 hours, or two years plus 225 hours.
Expect to submit education and employment records, supervisor details, CE documentation and job-task mapping. The full walkthrough is in CDT-I Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Blueprint: Seven Domains, Seven Ranges
NBC publishes ranges, not fixed weights, so treat these as approximate emphasis rather than exact question counts. Do not convert a range into a single number when planning.
| Domain | Range |
|---|---|
| 1. Perform Preliminary and Diagnostic Work Up | 20-22% |
| 2. Manufacture the Master Cast | 10-12% |
| 3. Manufacture Removable Prosthesis | 8-10% |
| 4. Manufacture Bar/Substructure | 15-17% |
| 5. Manufacture Screw-Retained Fixed or Removable (Hybrid) Restoration | 16-18% |
| 6. Manufacture Abutment and Cement-Retained Restoration | 14-16% |
| 7. Selection and Application of Materials and Equipment | 9-11% |
Domains 1, 4, 5 and 6 together carry the bulk of the exam, so most of your retention effort belongs there. The full content map is in CDT-I Exam Domains 2026: Complete Guide to All 7 Content Areas.
Question Style and Testing Rules
Item format
Written items are four-option, single-best-answer multiple choice, and some use completion-style stems (a sentence that you finish with the best option). "Single best answer" matters: more than one option may be partly defensible, and you are choosing the most correct one for the scenario described.
Session conditions
- Delivery is FastTest computer-based testing with MonitorEDU remote proctoring.
- Sessions are closed-book: no outside assistance, books, dictionaries or scratch paper.
- There is no scheduled break.
- Remote testing needs a private workspace, a compatible computer with webcam and audio, internet, a smartphone camera and photo ID.
- Accommodation requests need supporting documentation and at least 30 days' advance written notice.
Practical Exam Snapshot
The practical is hands-on and has two parts: advance preliminary work done before testing, then 5 hours 15 minutes of timed work.
Advance Work (Before the Timed Session)
Four items are prepared ahead of time:
- Advance casts
- A custom abutment
- An attachment baseplate
- A verification jig
Timed Work
Fixed-restoration and bar/substructure work, assessed in three grading groups.
- Three examiners grade the work independently.
- Every required practical subtest must pass in the same administration.
- Testing happens at a suitable dental laboratory with MonitorEDU, or at a scheduled volunteer-host group site.
That same-administration rule is the one to remember: a strong result in one subtest does not carry over if another falls short. For a realistic sense of the challenge, read How Hard Is the CDT-I Exam? Complete Difficulty Guide 2026.
Money Facts: Fees and Budgeting
| Scenario | Exam-Fee Subtotal (USD) |
|---|---|
| Standard initial route (specialty written + comprehensive + practical) | $1,200 |
| Existing CDT adding a specialty (specialty written + practical) | $925 |
These are exam fees only. Budget separately for preparation, materials, equipment, applicable shipping, travel, renewal and retakes. A failed written attempt means a new exam fee on reapplication.
On earnings: BLS reports a $49,610 median annual wage for dental laboratory technicians as of May 2025. That figure describes the occupation as a whole. It is not specialty pay and it is not a measured certification premium, so do not use it to estimate what an implant specialty adds. For a fuller discussion, see CDT-I Salary Guide 2026: Complete Earnings Analysis and Is the CDT-I Certification Worth It? Complete ROI Analysis 2026.
Windows, Deadlines, Retakes
- Written windows: monthly, with applications due by the 20th of the preceding month.
- Remote practical windows: January, March, May, July, September and November.
- Written retake wait: at least 30 days before reapplying, plus a new exam fee.
- Component order: 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.
Key Takeaway
Work backward from the 20th. If you want a written window in a given month, your application is due by the 20th of the month before. Confirm current dates on the CDT-I Exam Dates 2026: Testing Windows, Deadlines & Scheduling page and with NBC directly.
Renewal Requirements
The credential renews annually. Each renewal includes a renewal fee, a legal and ethical attestation, and 12 CE hours, split as follows:
| CE Category | Hours |
|---|---|
| Regulatory Standards | 1 |
| Scientific (at least 3 must be NBC-approved) | 6 |
| Additional allowable hours | 5 |
| Total | 12 |
Holding additional specialties does not increase the annual CE requirement, so adding Implants to an existing CDT does not add to your yearly hours.
Implant Topics Worth Memorizing
The blueprint shows where the weight sits. These are the working-knowledge areas that map to it.
Domain 1: Preliminary and Diagnostic Work Up (20-22%)
The largest domain. Expect scenario-style questions about reading and evaluating case information before any fabrication begins.
- Reviewing prescriptions and case data for completeness and conflicts
- Evaluating diagnostic information to plan the restorative approach
- Recognizing when a case needs clarification from the clinician before proceeding
Domains 4, 5 and 6: The Restoration Core (15-17%, 16-18%, 14-16%)
Bars and substructures, screw-retained and hybrid restorations, and abutments with cement-retained restorations. These mirror the practical, so written study and bench practice reinforce each other.
- Bar and substructure design, fit and passive seating concepts
- Screw-retained fixed and removable (hybrid) restoration manufacture
- Custom abutment and cement-retained restoration workflow
Domains 2, 3 and 7: Supporting Knowledge (10-12%, 8-10%, 9-11%)
Master cast manufacture, removable prosthesis work, and the selection and application of materials and equipment. Smaller shares, but easy points if you have covered them.
- Master cast accuracy and the components that support it
- Removable prosthesis manufacture in an implant context
- Matching materials and equipment to the restoration type
For a structured approach to all of it, see CDT-I Study Guide 2026: How to Pass on Your First Attempt.
Sequencing Your Review Around the Blueprint
A short framework, tied to the domain weights rather than generic scheduling advice:
Domain 1 First
- It is the largest range and it frames every later domain.
- Drill case-evaluation scenarios until the reasoning is automatic.
Domains 5, 4 and 6
- Tackle screw-retained/hybrid work, then bars/substructures, then abutments and cement-retained restorations.
- Pair each with the matching practical task if you are also preparing for the bench exam.
Domains 2, 3 and 7, Then Mixed Practice
- Close the smaller domains.
- Finish with mixed timed sets under closed-book conditions, since there is no scratch paper and no break on exam day.
Because the real session allows no notes or scratch paper, rehearse the same way: work problems mentally, commit to a single best answer, and move on. Timed sets on the practice test site help you check your pace against 90 questions in 90 minutes.
FAQ
90 administered questions: 80 scored and 10 unscored field-test items, in 1 hour 30 minutes. Items are four-option, single-best-answer multiple choice, including completion-style stems.
Exam fees total $925: $275 for the specialty written and $650 for the practical. Preparation, materials, equipment, shipping, travel, renewal and retakes are budgeted separately.
Perform Preliminary and Diagnostic Work Up, at 20-22%. Screw-retained/hybrid restorations (16-18%), bars/substructures (15-17%) and abutment/cement-retained restorations (14-16%) follow. NBC publishes ranges, not fixed weights.
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 your first pass.
12 hours annually: 1 Regulatory Standards, 6 Scientific (at least 3 NBC-approved) and 5 additional allowable hours, plus the renewal fee and a legal and ethical attestation. Extra specialties do not increase this total.
Keep this sheet handy, verify details against the current NBC CDT Examination Handbook and Application, and use the linked guides when you need to go deeper on any single topic.