CDT-I Exam Dates 2026: Testing Windows, Deadlines & Scheduling

How the CDT-I Schedule Actually Works

The Certified Dental Technician credential in the Implants specialty is administered by the National Board for Certification in Dental Laboratory Technology (NBC). Unlike exams that publish a single national test date, the NBC runs rolling windows. That means "exam dates" for CDT-I are really a set of recurring windows with application deadlines attached, and your real calendar is built backward from those deadlines.

There are two timelines to manage. The written exam is a computer-based test delivered through FastTest with MonitorEDU remote proctoring. The practical is hands-on work completed at a suitable dental laboratory with MonitorEDU, or at a scheduled volunteer-host group site. Each has its own cadence, and they interact with the NBC's four-year completion rule.

If you are still deciding whether the credential fits your career, start with What Is CDT-I Certification? and the CDT-I requirements guide, then return here to plan dates.

Monthly Written Windows and the 20th-of-the-Month Deadline

Written testing windows run every month. The rule that matters is the application deadline: your application is due by the 20th of the preceding month. In practice, if you want to sit for the written exam in a given month, your paperwork must be in by the 20th of the month before. A candidate aiming for a September window, for example, would need to apply by August 20.

Because the specialty written exam is short, with 90 administered questions (80 scored plus 10 unscored field-test items) in 1 hour 30 minutes, many candidates underestimate the lead time needed to prepare. The exam is brief, but the content spans seven domains, from diagnostic work-up through materials and equipment. The CDT-I exam domains guide breaks down each area so you can judge how much runway you need before applying.

What the application packet involves

The application is not a simple registration form. You submit education and employment records, supervisor details, continuing education documentation where applicable, and job-task mapping. If you are using a mentorship component, it requires a certified supervisor and an attestation. Gathering these records is often the slowest part of the process, which is why the 20th-of-the-month deadline arrives faster than most candidates expect.

Remote Practical Windows: Six Per Year

The practical exam has a much sparser calendar than the written. Remote practical windows run in January, March, May, July, September and November. That is six opportunities per year, and each is a significant commitment.

The practical is hands-on: 5 hours 15 minutes of timed work plus advance preliminary work. Before the timed portion, you prepare advance casts, a custom abutment, an attachment baseplate and a verification jig. The timed portion then covers fixed-restoration and bar/substructure work, assessed in three grading groups. Three examiners grade your work independently, and every required practical subtest must pass in the same administration.

For a deeper look at what examiners assess, see the CDT-I difficulty guide, which discusses why the hands-on component is where preparation habits matter most.

Why Eligibility Comes Before Any Date

No window helps you if your eligibility is not established. The baseline requirements are a high-school diploma or equivalent, working English, satisfactory ethical and legal standing, and an NBC-approved technical pathway.

The standard pathway requires 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 are not double-counted. Other routes exist:

For CE-substitution, no more than one-third of the hours may be self-study, no more than one-third qualified mentoring, and at least one-third must be qualifying NBC/ADA-CERP/AGD education. Verifying that you can document all of this is the first scheduling task, not the last. The full breakdown is in CDT-I Requirements 2026: Eligibility, Prerequisites & How to Qualify.

The Four-Year Clock Across Components

The standard initial route includes three exams: the specialty written, the comprehensive and the practical. They may be taken in any order, but all must be passed within four years of the first pass. This is the single most important long-range scheduling rule, because a failed practical or a delay in the comprehensive can start eating into that window.

An eligible current Recognized Graduate examination can substitute for the comprehensive component within its four-year allowance. If this applies to you, track both clocks: the RG allowance and the four-year window for passing the remaining components.

What to Expect on Written Exam Day

Once your window arrives, the logistics are strict. Written sessions are closed-book. No outside assistance, books, dictionaries or scratch paper are allowed, and there is no scheduled break. For remote testing you need a private workspace, a compatible computer with webcam and audio, a reliable internet connection, a smartphone camera and a photo ID.

Items are four-option, single-best-answer multiple choice, including completion-style stems. The specialty written exam draws on the full blueprint, with NBC's percentage ranges as follows:

The passing requirement itself is supplied by NBC in candidate confirmation information; our CDT-I passing score article explains how to interpret what you receive. Because there is no break and no scratch paper, do a technical check of your remote setup ahead of the window rather than on the day.

Sequencing Your Calendar by Domain

Since you control which window you target, you can build a preparation sequence around the blueprint. This is the one place where a study timeline earns its keep, because the domain weights tell you where to spend your final weeks before the application deadline and the exam itself.

Schedule your application so the final mixed practice set lands a few days before your window, not weeks. For the full approach, the CDT-I study guide maps resources to each domain, and you can drill with the CDT-I practice questions on our main site to simulate the multiple-choice format before you apply.

Retakes, Accommodations and Lead Times

If you need to retake

Failed written candidates must wait at least 30 days before reapplying and pay a new exam fee. Combine that with the 20th-of-the-preceding-month application deadline and your realistic retake can land a month or two out rather than the following week. This is another reason to avoid scheduling your first attempt at the tail end of your four-year window.

If you need accommodations

Accommodation requests require supporting documentation and at least 30 days' advance written notice. Treat that as a hard lead time, and file it alongside, not after, your application. Waiting until you have your window confirmed may leave you short of the 30 days.

Fees and Timing: What You Pay and When

Exam fees are set per component: $275 for the specialty written, $275 for the comprehensive and $650 for the practical. Because failed candidates pay a new exam fee on retake, a stronger first-attempt plan also protects your budget. Beyond exam fees, remember that the credential has ongoing obligations.

Renewal is annual, requiring a renewal fee, a legal and ethical attestation, and 12 CE hours: 1 Regulatory Standards, 6 Scientific (including at least 3 NBC-approved), and 5 additional allowable hours. Additional specialties do not increase the annual CE requirement. If you are weighing the long-term return, see Is the CDT-I Certification Worth It? and the CDT-I salary guide. For context only, the BLS reported a $49,610 median annual wage for dental laboratory technicians in May 2025; that is an occupation-wide figure, not specialty pay or a certification premium.

Frequently Asked Questions

Once your dates are set, the best use of the remaining time is targeted practice. Review the CDT-I cheat sheet for a quick refresher on the facts that tend to appear, and test yourself with CDT implants practice test questions aligned to the seven blueprint domains.