How long does it take to become a dental hygienist?
Most dental hygienists complete an associate's degree (AAS) from a CODA-accredited program, which typically takes 2 years after prerequisites are completed. Including prerequisite coursework, the full timeline from start to licensure is generally 2.5 to 4 years. Bachelor's-level programs (BSDH) take 4 years total.
What's the difference between a dental assistant and a dental hygienist?
Dental assistants typically complete a short training program or on-the-job training and earn a median wage around $47,300. Dental hygienists complete a CODA-accredited college program, are licensed by the state, perform clinical procedures (cleanings, periodontal therapy, radiographs), and earn a median wage around $94,260 — roughly double. Many dental assistants bridge to dental hygienist for the significant pay increase and expanded scope of practice.
Can I take dental hygiene prerequisites if my science degree is more than 5 years old?
Yes — and that's actually one of the most common reasons students enroll. Many CODA-accredited dental hygiene programs require A&P, microbiology, and chemistry to be completed within the last 5 years (some allow up to 7). Re-taking individual courses through PrereqCourses is far faster and cheaper than enrolling in a full degree program just to refresh expired credits.
Will my target dental hygiene program accept online prerequisites?
Most CODA-accredited dental hygiene programs accept prerequisite coursework from regionally accredited institutions. Our courses are delivered through Upper Iowa University, which holds regional accreditation through the Higher Learning Commission (HLC). Individual program policies vary — some have specific lab-component requirements — so always confirm with your target program's admissions office before enrolling.
What GPA do I need in prerequisite coursework?
Most CODA-accredited programs require a minimum GPA of 2.5–3.0 in prerequisite coursework, with grades of "C" or better in each course. Competitive programs may require GPAs of 3.3 or higher. Science prerequisites (A&P, microbiology, chemistry) are often weighted most heavily in admissions decisions.
Are biology credits required for dental hygiene school?
Yes. Most CODA programs require general biology, A&P I and II, and microbiology — typically 12–16 credits of biology total. Anatomy & Physiology and Microbiology are required by virtually every program; general biology is required by many but not all.
Do I need chemistry for dental hygiene school?
Most CODA programs require General Chemistry I, and some require General Chemistry I and II. Organic chemistry and biochemistry are generally NOT required for dental hygiene programs (those are dental school requirements). Always verify your specific program's chemistry requirement before enrolling.
How long does each course take?
Because courses are fully self-paced, you control the timeline. Many students complete a single course in just 2 to 3 weeks of focused study, while others spread the work over a few months around their job and family commitments. There's no minimum or maximum pace — you can finish as quickly as you're able.
Does my dental practice employer offer tuition reimbursement?
Many large dental service organizations (DSOs) offer tuition reimbursement for dental assistants pursuing dental hygiene licensure. Heartland Dental, Aspen Dental, and Pacific Dental Services are among the employers known to support continuing education for clinical staff. Check directly with your HR department for current benefits and eligibility.
