NDLE study guide
NDLE · Work through your exam, one topic at a time.
The NDLE (National Dental Licensure Examination) is the licensing examination a dental graduate must pass before practising as a dentist within the jurisdiction that administers it. It is intended for final-year dental students and graduates of recognised dental programs who are seeking entry to clinical practice, and it tests whether a candidate can apply foundational science to safe, competent patient care rather than simply recall lecture material. The NDLE study guide has 10 sections and about 3,252 words.
01General and Oral Anatomy, Histology, and Physiology
This domain tests the microstructure and composition of dental hard and soft tissues, the eruption timetable and tooth-numbering systems, and the physiology of saliva, mineralisation and pulpal sensation - the foundation for every clinical domain that follows. Enamel : about 96% mineral by weight, organised into rods (prisms) of hydroxyapatite; aprismatic at the DEJ and outer surface; ameloblasts are lost at eruption, so enamel cannot regenerate - only remineralise.
318 words, about 2 min02Head and Neck Anatomy
Head and neck anatomy is examined through nerve and vessel pathways, fascial spaces, and the applied anatomy that determines where a local anaesthetic is deposited and which structures a surgical flap can injure. V1 exits the superior orbital fissure; branches are frontal, lacrimal and nasociliary.
359 words, about 2 min03Oral Pathology and Oral Medicine
Tests your ability to recognise oral mucosal disease, separate reactive and immune-mediated lesions from malignancy, and identify odontogenic cysts and tumours by site, lining and clinical behaviour. Leukoplakia is a clinical label of exclusion: a white patch that cannot be attributed to another cause.
333 words, about 2 min04Microbiology, Immunology, and Infection Control
Covers the oral microbiome and the specific pathogens of caries and periodontitis, the principles of sterilisation and disinfection, and standard precautions against blood-borne viruses. Caries : mutans streptococci initiate, lactobacilli propagate, Actinomyces species dominate root caries; the Stephan curve shows the pH fall after sugar and its salivary recovery.
313 words, about 2 min05Pharmacology and Therapeutics
Tests dose calculation and patient selection for local anaesthetics, the choice and limits of antibiotics and analgesics, and the interactions and pregnancy considerations that shape dental prescribing. Amides (lidocaine, articaine, mepivacaine, bupivacaine, prilocaine) are metabolised hepatically; esters are hydrolysed by plasma pseudocholinesterase.
290 words, about 1 min06Operative Dentistry and Dental Materials
Tests cavity design, adhesion to enamel and dentin, and the selection and handling of direct restorative materials - the decisions that determine marginal seal and restoration longevity. Class I occlusal pits and fissures; II proximal posteriors; III proximal anteriors sparing the incisal edge; IV involving the incisal edge; V cervical third; VI incisal tips and cusp heights.
318 words, about 2 min07Endodontics
Examines diagnosis and working-length determination, canal anatomy, shaping and irrigation, obturation, and the management of the previously treated tooth. Cold test and electric pulp test assess vitality; percussion and palpation assess periapical status; CBCT for complex anatomy.
317 words, about 2 min08Periodontics
Tests periodontal examination and diagnosis using the 2017 classification, the evidence base for nonsurgical therapy, and the recognition and management of peri-implant disease. Probing depth, clinical attachment level, bleeding on probing, plaque scores, mobility, furcation involvement and radiographs.
345 words, about 2 min09Prosthodontics and Restorative Dentistry
Tests the design of removable and fixed prostheses, occlusal principles, and the material and biological choices that determine fit, retention and longevity. Components: major connector, rests, minor connectors, clasp assemblies and denture bases.
326 words, about 2 min10Oral and Maxillofacial Surgery and Anesthesia
Tests the assessment and execution of extractions, third molar difficulty, recognition and management of complications, and the surgical and anaesthetic emergencies that carry airway risk. History, medical status, radiograph and anaesthesia; mucoperiosteal flap with a relieving incision for surgical access.
333 words, about 2 min