Dental Examination Overview
These notes are designed for candidates preparing for the Dental Examination (DE), a competency assessment for entry-to-practice dental professionals. The content is anchored to official ADEX/CDCA-WREB-CITA sources and focuses on six core subjects. Use these notes to reinforce clinical reasoning, regulatory knowledge, and patient safety principles. Verify all pass marks, dates, and eligibility with the official testing body.
For Dental Conquer practice planning, this module is tracked as 80 questions over about 120 minutes with a listed pass mark of 70%. Treat those numbers as practice baselines and verify the current official format before scheduling.
How This Guide Is Organized
The sections below turn the syllabus into studyable subject blocks. Read a subject first, explain the must-know ideas without notes, then use questions and flashcards to test whether the knowledge holds under pressure.
- Clinical Assessment and Patient Data Collection
- Radiographic Imaging and Interpretation
- Periodontology and Soft Tissue Management
- Oral Pathology and Diagnostic Sciences
- Infection Control and Occupational Safety
- Pharmacology and Medical Emergency Management
Exam Snapshot and Readiness Target
Format: 80 questions, 120 minutes (practice baseline); official format may vary
Candidate level: Entry-to-practice dental licensure
Readiness target: Competency in clinical assessment, radiography, periodontology, oral pathology, infection control, and pharmacology/emergency management
Most candidates should budget at least 38+ focused study hours, then adjust upward for unfamiliar clinical systems, regulatory content, or specialty-level case reasoning.
Clinical Assessment and Patient Data Collection
Syllabus Focus
- Medical and dental history taking
- Vital signs measurement and interpretation
- Extraoral and intraoral examination
- Periodontal charting and probing
- Risk assessment (caries, periodontal disease, oral cancer)
Key Notes
- Systematic approach: history → vital signs → extraoral → intraoral → periodontal → occlusion → hard tissue.
- Medical history must include medications, allergies, bleeding disorders, and conditions requiring antibiotic prophylaxis (e.g., joint replacements, endocarditis risk).
- Vital signs: normal ranges (BP <120/80, HR 60-100, RR 12-20, temp 36.5-37.5°C). Hypertension requires referral or deferral.
- Periodontal probing: six sites per tooth, record bleeding on probing, probing depths, recession, furcation involvement, mobility.
- Caries risk assessment: use CAMBRA or ADA criteria; consider diet, fluoride exposure, saliva flow, and past caries history.
- Oral cancer screening: inspect and palpate all oral mucosa, lips, tongue, floor of mouth, and neck; refer any suspicious lesion.
- Documentation: use SOAP format; be objective, complete, and legible; note any refusal of recommended tests.
Must Know
- Normal vital sign ranges and when to defer treatment.
- Components of a comprehensive intraoral examination.
- Periodontal charting parameters (probing depth, CAL, bleeding, mobility, furcation).
- Medical history red flags: anticoagulants, bisphosphonates, immunosuppression, pregnancy.
- Caries risk assessment categories and preventive interventions.
Clinical and Exam Application
- Given a patient with hypertension (160/100), defer elective treatment and refer for medical evaluation.
- For a patient on warfarin, check INR (therapeutic range 2-3) before periodontal probing or surgery.
- Identify a leukoplakic lesion on the lateral tongue; perform a brush biopsy or refer for scalpel biopsy.
- Use a periodontal probe to measure 6mm pocket with bleeding; diagnose periodontitis and plan scaling/root planing.
- Assess a child with high caries risk; recommend fluoride varnish, sealants, and dietary counseling.
High-Yield Distinctions
- Bleeding on probing indicates active inflammation, not necessarily attachment loss.
- Probing depth vs. clinical attachment level: CAL accounts for recession or overgrowth.
- Furcation involvement: class I (early), II (partial), III (through-and-through).
- Mobility: class 0 (physiologic), 1 (horizontal <1mm), 2 (1-2mm), 3 (vertical mobility).
- Oral cancer risk factors: tobacco, alcohol, HPV, age >40, sun exposure (lip).
Common Pitfalls
- Forgetting to update medical history at each visit.
- Confusing probing depth with attachment level.
- Missing early oral cancer lesions (e.g., erythroplakia).
- Not documenting vital signs before treatment.
- Overlooking bleeding disorders in medical history.
Review Tasks
- Practice taking a complete medical history on a partner.
- Perform a mock intraoral examination and chart findings.
- Review ADA caries risk assessment forms.
- Study normal and abnormal vital sign ranges.
- Watch a video on periodontal probing technique.
Radiographic Imaging and Interpretation
Syllabus Focus
- Radiation physics and safety (ALARA, dose limits)
- Intraoral techniques (periapical, bitewing, occlusal)
- Extraoral techniques (panoramic, cephalometric, CBCT)
- Radiographic anatomy and landmarks
- Interpretation of caries, periodontal disease, pathology, and anomalies
Key Notes
- ALARA principle: minimize exposure through collimation, filtration, fast film/digital sensors, and proper technique.
- Dose limits: occupational 20 mSv/year, public 1 mSv/year; pregnant patients: avoid unless necessary.
- Periapical radiograph: paralleling technique preferred; bisecting angle technique for limited access.
- Bitewing radiographs: detect interproximal caries and assess crestal bone levels.
- Panoramic radiograph: overview of jaws, sinuses, TMJ; useful for impacted teeth, pathology, and trauma.
- CBCT: limited field for implant planning, root fractures, and 3D assessment; higher dose than intraoral.
- Interpretation: radiolucent vs. radiopaque; caries appear as radiolucent; bone loss as crestal or furcation radiolucency.
Must Know
- Radiation safety: lead apron, thyroid collar, proper film/sensor placement.
- Normal radiographic anatomy: lamina dura, periodontal ligament space, pulp chamber, root canals.
- Caries classification: incipient (enamel), moderate (dentin), severe (pulp).
- Periodontal bone loss: horizontal vs. vertical; furcation involvement.
- Common pathologies: periapical radiolucency (abscess/granuloma/cyst), impacted teeth, osteosclerosis.
Clinical and Exam Application
- Use bitewings to detect interproximal caries in posterior teeth; prescribe based on caries risk (every 6-24 months).
- For a patient with pain on tooth #30, take a periapical to assess periapical pathology.
- Panoramic radiograph for evaluation of third molars before extraction.
- CBCT for implant planning: measure bone height, width, and vital structures.
- Identify a radiopaque lesion in the mandible as idiopathic osteosclerosis (dense bone island).
High-Yield Distinctions
- Radiolucent: caries, pulp, periodontal ligament space, marrow spaces, cysts, tumors.
- Radiopaque: enamel, dentin, bone, calculus, restorative materials, osteosclerosis.
- Bitewing vs. periapical: bitewing shows crowns and crestal bone; periapical shows full tooth and periapical area.
- Panoramic distortion: anterior teeth appear magnified, posterior teeth may overlap.
- CBCT vs. CT: CBCT lower dose, higher resolution for dental structures.
Common Pitfalls
- Using bisecting angle technique when paralleling is possible (distortion).
- Misinterpreting a nutrient canal as a fracture.
- Overlooking caries on a radiograph due to overlapping contacts.
- Failing to use a thyroid collar on all patients.
- Confusing a periapical granuloma with a cyst (both radiolucent; cyst has corticated border).
Review Tasks
- Practice paralleling technique on a mannequin.
- Identify 10 radiographic landmarks on a panoramic film.
- Review caries detection on bitewings with varying severity.
- Study ALARA principles and dose comparison chart.
- Interpret a CBCT scan for implant site assessment.
Periodontology and Soft Tissue Management
Syllabus Focus
- Gingival and periodontal anatomy
- Etiology and pathogenesis of periodontal disease
- Periodontal assessment and classification
- Non-surgical and surgical therapy
- Soft tissue lesions and management
Key Notes
- Periodontitis is a biofilm-induced inflammatory disease; risk factors include smoking, diabetes, genetics, and poor oral hygiene.
- 2018 AAP/EFP classification: periodontal health, gingivitis, periodontitis (staging I-IV, grading A-C), and peri-implant diseases.
- Full-mouth periodontal charting: probing depth, CAL, bleeding on probing, mobility, furcation, recession.
- Non-surgical therapy: scaling and root planing (SRP) with ultrasonic and hand instruments; adjunctive antimicrobials (chlorhexidine, doxycycline).
- Surgical therapy: flap surgery, osseous surgery, regenerative procedures (GTR, bone grafts), and mucogingival surgery.
- Soft tissue lesions: traumatic, infectious (herpes, candidiasis), immune-mediated (lichen planus, pemphigus), and neoplastic.
- Periodontal maintenance: 3-4 month intervals for periodontitis patients; reinforce oral hygiene.
Must Know
- Periodontal disease classification: staging (severity/complexity) and grading (risk/progression).
- Indications for SRP: probing depths ≥4mm with bleeding or attachment loss.
- Contraindications for surgery: uncontrolled systemic disease, poor oral hygiene, non-compliant patient.
- Common soft tissue lesions: aphthous ulcer (painful, yellow base, red halo), herpes labialis (vesicles, crusting).
- Peri-implant mucositis vs. peri-implantitis: mucositis is reversible inflammation without bone loss; peri-implantitis involves bone loss.
Clinical and Exam Application
- For a patient with generalized periodontitis stage III grade B, perform full-mouth SRP and prescribe chlorhexidine rinse.
- Identify a white reticular lesion on buccal mucosa as oral lichen planus; monitor or refer if symptomatic.
- Manage a patient with acute necrotizing ulcerative gingivitis (ANUG): debridement, metronidazole, chlorhexidine, and smoking cessation.
- For a 6mm pocket on tooth #19 with bleeding, plan SRP and re-evaluate in 6 weeks; if residual pocket, consider flap surgery.
- Treat a patient with peri-implantitis: mechanical debridement, chlorhexidine, and possibly surgical intervention.
High-Yield Distinctions
- Gingivitis vs. periodontitis: gingivitis has no attachment loss; periodontitis has CAL.
- Chronic vs. aggressive periodontitis: aggressive has rapid bone loss, familial pattern, and minimal plaque.
- Necrotizing periodontal diseases: ANUG (gingiva only), NUP (periodontium), associated with stress, smoking, HIV.
- Periodontal abscess vs. periapical abscess: periodontal abscess originates from pocket; periapical from pulp necrosis.
- GTR vs. bone graft: GTR uses membrane to exclude epithelium; bone graft provides scaffold for regeneration.
Common Pitfalls
- Diagnosing periodontitis without probing and radiographs.
- Performing SRP on a patient with acute infection without antibiotics.
- Confusing ANUG with herpetic gingivostomatitis (ANUG has pseudomembrane, herpetic has vesicles).
- Not considering systemic diseases (diabetes, leukemia) in periodontal assessment.
- Over-treating peri-implant mucositis with surgery when non-surgical is sufficient.
Review Tasks
- Practice full-mouth periodontal charting on a typodont.
- Review AAP/EFP classification flowcharts.
- Study soft tissue lesion identification (images).
- Role-play SRP instrumentation on a mannequin.
- Read a case study on peri-implantitis management.
Oral Pathology and Diagnostic Sciences
Syllabus Focus
- Developmental anomalies of teeth and jaws
- Inflammatory and reactive lesions
- Cysts of the jaws and oral cavity
- Benign and malignant neoplasms
- Salivary gland pathology
- Diagnostic techniques (biopsy, cytology, imaging)
Key Notes
- Developmental anomalies: anodontia, supernumerary teeth, microdontia, macrodontia, dens invaginatus, dens evaginatus, taurodontism.
- Inflammatory/reactive lesions: pyogenic granuloma, peripheral giant cell granuloma, fibroma, mucocele, ranula.
- Odontogenic cysts: radicular (most common), dentigerous, odontogenic keratocyst (OKC), lateral periodontal, calcifying odontogenic cyst.
- Non-odontogenic cysts: nasopalatine duct cyst, incisive canal cyst, globulomaxillary cyst (controversial).
- Benign neoplasms: ameloblastoma (most common odontogenic tumor), odontoma, ossifying fibroma, papilloma.
- Malignant neoplasms: squamous cell carcinoma (90% of oral cancers), verrucous carcinoma, mucoepidermoid carcinoma, adenoid cystic carcinoma.
- Diagnostic tests: incisional biopsy for large lesions, excisional for small; fine needle aspiration for salivary gland masses; exfoliative cytology for screening.
Must Know
- Red flags for oral cancer: non-healing ulcer >2 weeks, erythroplakia, leukoplakia, mixed red-white lesion.
- Odontogenic keratocyst: high recurrence rate, associated with nevoid basal cell carcinoma syndrome (Gorlin syndrome).
- Ameloblastoma: multilocular radiolucency, soap bubble appearance, benign but locally aggressive.
- Radicular cyst: associated with non-vital tooth, periapical radiolucency with corticated border.
- Mucocele: bluish, fluctuant swelling on lower lip; caused by trauma to minor salivary gland.
Clinical and Exam Application
- A patient presents with a painless, slow-growing swelling in the mandible; radiograph shows multilocular radiolucency; biopsy confirms ameloblastoma; plan en bloc resection.
- A 6mm white patch on the lateral tongue that does not rub off; perform incisional biopsy; result shows dysplasia; refer for excision.
- A child has a bluish swelling on the lower lip after biting; diagnose mucocele; excise if persistent.
- A periapical radiolucency on tooth #9 with non-vital pulp; root canal treatment; lesion heals; consistent with radicular cyst.
- A patient with multiple basal cell carcinomas and jaw cysts; suspect Gorlin syndrome; refer for genetic testing.
High-Yield Distinctions
- Radicular cyst vs. periapical granuloma: both radiolucent; cyst has corticated border, granuloma does not.
- Dentigerous cyst vs. OKC: dentigerous surrounds crown of unerupted tooth; OKC may also but has parakeratin lining and satellite cysts.
- Ameloblastoma vs. odontogenic keratocyst: ameloblastoma is multilocular with soap bubble; OKC is unilocular or multilocular with scalloped border.
- Squamous cell carcinoma vs. verrucous carcinoma: SCC is invasive, ulcerated; verrucous is exophytic, well-differentiated, low-grade.
- Mucoepidermoid carcinoma: most common salivary gland malignancy; low, intermediate, high grade.
Common Pitfalls
- Assuming all periapical radiolucencies are abscesses; consider cyst or granuloma.
- Biopsying a lesion without considering vascular lesions (hemangioma) to avoid bleeding.
- Misdiagnosing a pyogenic granuloma as a malignancy (pyogenic granuloma is benign, red, bleeds easily).
- Forgetting to check for lymphadenopathy in oral cancer patients.
- Not referring a suspicious lesion for biopsy.
Review Tasks
- Study a chart of odontogenic and non-odontogenic cysts.
- Review histology slides of common oral lesions.
- Practice biopsy technique on a simulation model.
- Create a differential diagnosis for a radiolucent jaw lesion.
- Read about TNM staging for oral cancer.
Infection Control and Occupational Safety
Syllabus Focus
- Standard and transmission-based precautions
- Hand hygiene and personal protective equipment (PPE)
- Sterilization and disinfection of instruments and surfaces
- Dental unit waterline management
- Bloodborne pathogens and sharps safety
- Regulatory agencies (OSHA, CDC, ADA)
Key Notes
- Standard precautions apply to all patients: hand hygiene, gloves, masks, eye protection, gowns, and safe injection practices.
- Transmission-based precautions: contact (e.g., MRSA), droplet (e.g., influenza), airborne (e.g., TB) - N95 respirator for airborne.
- Hand hygiene: before and after patient contact, after glove removal, after touching contaminated surfaces; use soap and water for C. difficile.
- PPE: gloves (non-sterile for exams, sterile for surgery), mask (surgical or N95), protective eyewear, gown (fluid-resistant).
- Sterilization: autoclave (steam) for heat-tolerant instruments; chemical sterilants for heat-sensitive; biological indicators (spore tests) weekly.
- Disinfection: intermediate-level (EPA-registered hospital disinfectant) for clinical surfaces; low-level for non-critical surfaces.
- Dental unit waterlines: treat to maintain <500 CFU/mL; use anti-retraction valves; flush lines at start of day and between patients.
Must Know
- OSHA Bloodborne Pathogens Standard: exposure control plan, hepatitis B vaccine, post-exposure follow-up.
- CDC Guidelines for Infection Control in Dental Health-Care Settings (2003, updated).
- Spore testing frequency: at least weekly; immediate recall if positive.
- Sharps disposal: puncture-resistant container, no recapping, immediate disposal.
- Hand hygiene indications: before and after patient contact, after touching contaminated surfaces, before donning gloves.
Clinical and Exam Application
- After a needlestick injury, wash wound with soap and water, report to supervisor, seek medical evaluation for HIV/HBV/HCV prophylaxis.
- For a patient with active TB, postpone elective treatment; if urgent, use airborne precautions (N95, negative pressure room).
- At the start of the day, flush dental unit waterlines for 2 minutes; between patients, flush for 20-30 seconds.
- Use a chemical indicator on each instrument pack; place a biological indicator in the autoclave weekly.
- Clean and disinfect operatory surfaces with an EPA-registered hospital disinfectant after each patient.
High-Yield Distinctions
- Sterilization vs. disinfection: sterilization kills all microorganisms including spores; disinfection reduces but does not eliminate spores.
- Critical, semi-critical, non-critical instruments: critical (penetrate tissue) must be sterile; semi-critical (mucous membrane) high-level disinfection or sterile; non-critical (intact skin) intermediate/low-level disinfection.
- Hand hygiene: alcohol-based hand rub is preferred unless hands are visibly soiled or C. difficile suspected.
- PPE removal order: gloves first, then goggles, then gown, then mask (to minimize contamination).
- Dental waterline standards: <500 CFU/mL for dental treatment; <200 CFU/mL for surgical procedures.
Common Pitfalls
- Reusing single-use items (e.g., prophylaxis angles, suction tips).
- Not changing gloves between patients or after touching contaminated surfaces.
- Improper autoclave loading (overloading, incorrect wrapping).
- Using expired disinfectants or sterilants.
- Failing to document spore test results.
Review Tasks
- Practice proper hand hygiene technique (WHO steps).
- Demonstrate correct donning and doffing of PPE.
- Review autoclave operation and spore testing protocol.
- Study OSHA exposure control plan template.
- Perform a mock infection control audit in a clinic.
Pharmacology and Medical Emergency Management
Syllabus Focus
- Local anesthetics and vasoconstrictors
- Analgesics (NSAIDs, acetaminophen, opioids)
- Antibiotics and antifungals
- Sedation and anxiolysis
- Medical emergencies: syncope, allergic reaction, hypoglycemia, seizures, cardiac arrest
- Emergency drugs and equipment
Key Notes
- Local anesthetics: amides (lidocaine, articaine, bupivacaine) vs. esters (procaine); amides are preferred due to lower allergy risk.
- Vasoconstrictors: epinephrine (1:100,000 or 1:200,000) prolongs anesthesia, reduces toxicity; contraindicated in severe cardiovascular disease (max 0.04mg epinephrine per appointment).
- NSAIDs: ibuprofen, naproxen; inhibit COX-1/COX-2; contraindicated in GI ulcers, bleeding disorders, aspirin allergy.
- Acetaminophen: analgesic/antipyretic; no anti-inflammatory; max 4g/day; hepatotoxic in overdose.
- Antibiotics: amoxicillin (first-line for odontogenic infections), clindamycin (for penicillin allergy), metronidazole (anaerobic coverage).
- Medical emergencies: syncope (most common) - Trendelenburg position, oxygen; allergic reaction - diphenhydramine for mild, epinephrine for anaphylaxis; hypoglycemia - oral glucose if conscious, IV dextrose if unconscious; seizures - protect airway, diazepam if prolonged; cardiac arrest - CPR, AED, call 911.
- Emergency kit: epinephrine, diphenhydramine, albuterol, nitroglycerin, aspirin, glucose, oxygen, AED.
Must Know
- Maximum doses of local anesthetics: lidocaine 2% with epi 1:100,000 = 7 mg/kg (max 500mg); articaine 4% with epi = 7 mg/kg (max 500mg).
- Signs of local anesthetic overdose: circumoral numbness, metallic taste, tinnitus, seizures, cardiac arrest.
- Antibiotic prophylaxis for infective endocarditis: amoxicillin 2g PO 30-60 min before procedure; for patients with prosthetic valves, previous endocarditis, certain congenital heart diseases.
- Management of anaphylaxis: IM epinephrine 0.3mg (1:1000) in thigh, call 911, oxygen, antihistamine.
- Syncope vs. hypoglycemia: syncope has prodrome (lightheadedness, pallor); hypoglycemia has confusion, sweating, hunger.
Clinical and Exam Application
- For a patient with a history of myocardial infarction (within 6 months), avoid epinephrine; use plain lidocaine or limit epinephrine to 0.04mg.
- A patient reports penicillin allergy; prescribe clindamycin 300mg QID for odontogenic infection.
- During a procedure, patient becomes pale and loses consciousness; place in Trendelenburg position, monitor vitals, administer oxygen; diagnose syncope.
- A diabetic patient becomes confused and sweaty; give oral glucose if conscious; if unconscious, administer glucagon IM or IV dextrose.
- A patient develops hives and difficulty breathing after receiving local anesthetic; administer IM epinephrine, call 911.
High-Yield Distinctions
- Amide vs. ester: amides (lidocaine, articaine) metabolized in liver; esters (procaine) metabolized by plasma pseudocholinesterase; ester allergy more common.
- Epinephrine concentration: 1:100,000 = 0.01mg/mL; 1:200,000 = 0.005mg/mL; maximum 0.04mg per appointment for cardiac patients.
- NSAIDs vs. acetaminophen: NSAIDs anti-inflammatory, analgesic, antipyretic; acetaminophen only analgesic/antipyretic.
- Benzodiazepines (diazepam, midazolam) for seizure and sedation; flumazenil is reversal agent.
- Nitroglycerin for angina: sublingual tablet or spray; contraindicated if patient took PDE5 inhibitors (sildenafil) within 24 hours.
Common Pitfalls
- Administering epinephrine to a patient with uncontrolled hypertension or hyperthyroidism.
- Giving aspirin for chest pain if patient has a bleeding disorder or is on anticoagulants.
- Confusing allergic reaction with local anesthetic toxicity (toxicity has CNS symptoms first).
- Forgetting to check blood glucose in an unconscious patient.
- Using outdated emergency drugs (check expiration dates monthly).
Review Tasks
- Memorize maximum doses of common local anesthetics.
- Practice emergency scenarios: syncope, anaphylaxis, hypoglycemia.
- Review the contents of a dental emergency kit and their indications.
- Study antibiotic prophylaxis guidelines from AHA.
- Role-play a medical emergency drill with a team.
How To Use These Notes With Practice Questions
Do not jump straight from reading to a full mock. Work by subject first: review the key notes, make a short recall sheet from memory, then answer a focused question set. After each miss, decide whether the problem was missing knowledge, poor clinical sequencing, weak source-rule recall, or a distractor you failed to eliminate.
Dental Conquer's question bank, flashcards, mind maps, and spaced review tools are most useful after this instruction layer because they reveal which parts of the notes are not yet retrievable.
Final Review Checklist
- Review all subject summaries focusing on must-know items.
- Practice clinical reasoning with case scenarios integrating multiple subjects.
- Verify official exam format, pass mark, and eligibility on ADEX/CDCA-WREB-CITA websites.
- Use the sources listed below for detailed manuals and forms.
- Simulate timed practice with 80 questions in 120 minutes to build stamina.
- Focus on high-yield distinctions and common pitfalls to avoid errors.
- Ensure you can explain the rationale behind each clinical decision.
Official Sources and Further Reading
Use these sources as the final authority for format, eligibility, rules, and exam updates. Study notes are a preparation layer, not a replacement for official candidate guidance.