Periodontology is the study of the periodontium — the gingiva, periodontal ligament, cementum, and alveolar bone — and of the diseases that destroy it. The course covers the etiology, clinical manifestations, prognosis, and treatment of periodontal disease, with emphasis on periodontal examination, treatment planning, and the dental hygienist's role in nonsurgical periodontal therapy.
Within the SCNS taxonomy, DEH is the Dental Hygiene prefix. DEH1602 sits in the didactic core of the associate-degree dental hygiene curriculum, typically in the second or third semester, running alongside the clinical sequence (DEH1800/DEH1802 and their clinic components) so that classroom diagnosis feeds directly into chairside practice. It is offered at approximately five Florida institutions, all of them within CODA-accredited dental hygiene programs — this is not a general-education or elective course, and enrollment is restricted to admitted program students.
This is, in practice, the most important didactic course in the dental hygiene curriculum. Periodontal assessment and nonsurgical periodontal therapy are not one topic among many in hygiene practice — they are the core of the job. A hygienist who is weak here is weak at the central function of the license.
DEH1602 does not carry the same weight at every Florida institution. Daytona State College publishes DEH1602 as a single 3-credit course titled simply "Periodontology," covering the subject end to end. Valencia College publishes DEH1602 as "Periodontology I" at 1 credit, and distributes the remaining content across DEH2604 "Periodontology II" (1 credit) and DEH2605 "Periodontology Seminar" (1 credit) — three separate courses that together approximate the single 3-credit offering.
The practical consequences are real. A student who completes a 1-credit "DEH1602" at one institution has not completed the content of a 3-credit "DEH1602" at another, even though the SCNS number matches exactly. Dental hygiene programs are cohort-based and rarely accept transfer into the middle of a clinical sequence, so this seldom becomes a transfer dispute in practice — but it matters enormously when reading a syllabus, buying a textbook, or judging how much of the subject a given course actually covers. Read the credit value and the course description, not the number.
The most frequent and most expensive malpractice claim involving dental hygienists is failure to diagnose and inform a patient of periodontal disease — years of "healthy prophy" appointments documented in a chart that, on later review, shows probing depths and bone loss that were recorded but never acted on, or never recorded at all. The chart is the defense. If a full-mouth periodontal charting was not performed and documented, the legal presumption in practice is that the disease was not assessed.
Two habits taught in this course protect a career: chart completely, every time, including the findings that are inconvenient; and tell the patient the diagnosis in plain language and document that you did. A hygienist who identifies periodontitis and records that the patient declined treatment is on solid ground. A hygienist who identified nothing is not.
Dental hygienists in Florida are licensed by the Florida Board of Dentistry under Chapter 466, Florida Statutes, and Rule Chapter 64B5, F.A.C. Licensure requires graduation from a CODA-accredited program, the National Board Dental Hygiene Examination, a clinical examination (Florida accepts ADEX/CDCA-WREB-CITA), and a Florida laws-and-rules examination.
Two Florida-specific points worth knowing early. First, administration of local anesthesia by dental hygienists requires separate, board-approved coursework beyond the entry-level curriculum, and it materially affects employability and pay — plan for it. Second, Florida permits hygienists to provide certain services under general supervision and, in defined health access settings, to perform services without a prior dentist examination (§§ 466.023 and 466.0235, F.S.) — the basis of public health hygiene practice in this state. Scope-of-practice rules are amended periodically; verify current language with the Board rather than relying on a textbook or on this guide.
Dental hygiene is consistently ranked among the better-paid two-year credentials, and that is accurate. What is less often said is that musculoskeletal injury — neck, shoulder, wrist, and back — is the leading reason hygienists leave clinical practice early, often within ten to fifteen years. The ergonomics content that appears alongside instrumentation training is not filler. Loupes with proper declination angle, correct patient and operator positioning, saddle stools, sharp instruments, and disciplined use of ultrasonics instead of brute hand force are the difference between a thirty-year career and a ten-year one. Take it seriously in the course, when the habits are still cheap to build.
Students will encounter strong claims that treating periodontal disease improves cardiovascular outcomes, birth outcomes, or diabetic control. The defensible position, and the one graded well on boards and respected in practice, is this: the association between periodontitis and several systemic conditions is well established; the bidirectional relationship with diabetes is the best supported, with reasonable evidence that periodontal therapy produces modest improvement in glycemic control; and causal claims for cardiovascular and pregnancy outcomes remain unproven. Overstating this to a patient is both an ethical problem and a credibility problem. Say what the evidence supports.
DEH1602 is a lecture course with no separate laboratory, but it is deliberately co-scheduled with clinic. Expect case-based work, periodontal case documentation assignments, radiographic interpretation exercises, and examinations built in board format. Prerequisites at Daytona State are DES1840 and DEH1002C; the course is offered in spring. Where the content is distributed across a Periodontology I/II/Seminar sequence, the same material is spread across two or three terms.
Periodontology is one of the most heavily weighted domains on the National Board Dental Hygiene Examination, and the case-based component of the clinical examination requires periodontal assessment, classification, and treatment planning on a live patient. Material from this course reappears directly on both. Students who treat it as a course to survive rather than to learn generally discover the gap at board review, when there is no time left to close it.
How Florida course levels affect transfer: the first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions; the meaningful boundary is 2000 to 3000, where lower-division credit generally cannot substitute for upper-division requirements. DEH1602 is a 1000-level course and transfers as lower-division credit — but as a practical matter, dental hygiene programs are lock-step cohorts and accept transfer credit into the professional sequence rarely and case by case. Students moving between programs should expect to repeat clinical coursework regardless of what the transcript says. The credit-value difference described above is an additional reason to have any transfer evaluated in writing before relying on it.
Generated September 2, 2026 · Updated September 2, 2026