Council of Interstate Testing Agencies (CITA) Overview
These study notes are designed to help candidates prepare for the CITA exam, which is part of the ADEX dental hygiene licensure process. The notes cover key subjects, clinical applications, and common pitfalls based on official ADEX manuals and resources. Candidates should verify all details with the official CITA/CDCA-WREB-CITA website.
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.
- Comprehensive Patient Assessment and Medical Risk Management
- Periodontal Debridement and Clinical Instrumentation
- Local Anesthesia Administration and Pain Control
- Diagnostic Radiography and Imaging Interpretation
- Restorative Procedures and Dental Material Science
- Clinical Infection Control and Jurisprudence
Exam Snapshot and Readiness Target
Format: 80 questions, 120 minutes (practice baseline); actual exam includes OSCE, CSCE, and clinical skills assessment
Candidate level: Entry-to-practice dental hygiene licensure
Readiness target: Demonstrate competency in patient assessment, periodontal debridement, local anesthesia, radiography, restorative procedures, and infection control/jurisprudence
Most candidates should budget at least 38+ focused study hours, then adjust upward for unfamiliar clinical systems, regulatory content, or specialty-level case reasoning.
Comprehensive Patient Assessment and Medical Risk Management
Syllabus Focus
- Medical history review and risk assessment
- Vital signs and extraoral/intraoral examination
- Pharmacological considerations and drug interactions
- Medical emergencies and management protocols
Key Notes
- Always obtain and document a thorough medical history, including medications, allergies, and systemic conditions.
- Assess ASA classification to determine patient risk and need for medical consultation.
- Monitor vital signs (blood pressure, pulse, respiration) and recognize abnormal values.
- Be familiar with common drug interactions (e.g., epinephrine with MAOIs, NSAIDs with anticoagulants).
- Identify signs of medical emergencies (syncope, allergic reaction, hypoglycemia) and know immediate management steps.
- Use the 'PQRST' method for pain assessment: Provocation, Quality, Radiation, Severity, Time.
Must Know
- ASA classification: ASA I (healthy) to ASA IV (severe systemic disease).
- Normal vital sign ranges: BP <120/80, pulse 60-100 bpm, respirations 12-20/min.
- Contraindications to elective dental hygiene care: uncontrolled hypertension, recent MI/stroke, etc.
- Common medical emergency drugs: oxygen, epinephrine, diphenhydramine, nitroglycerin, glucose.
Clinical and Exam Application
- When a patient reports a history of mitral valve prolapse, determine if antibiotic prophylaxis is needed (per AHA guidelines).
- For a patient on warfarin, check INR before periodontal debridement; if INR >3.5, defer non-emergency care.
- If a patient experiences syncope, place in Trendelenburg position and administer oxygen.
High-Yield Distinctions
- ASA II vs. ASA III: ASA II has mild systemic disease without functional limitation; ASA III has significant limitation.
- Epinephrine contraindications: hyperthyroidism, pheochromocytoma, severe cardiovascular disease.
- Nitrous oxide contraindications: COPD, pregnancy (first trimester), bowel obstruction.
Common Pitfalls
- Failing to update medical history at each appointment.
- Not recognizing that a patient's 'allergy to penicillin' may be a non-allergic reaction.
- Overlooking the need for medical consultation for patients with complex conditions.
Review Tasks
- Review ASA classification and examples for each class.
- Practice taking and interpreting vital signs.
- Study medical emergency algorithms from the ADEX manual.
Periodontal Debridement and Clinical Instrumentation
Syllabus Focus
- Periodontal assessment: probing, recession, furcation, mobility
- Scaling and root planing techniques
- Instrument sharpening and maintenance
- Periodontal disease classification and treatment planning
Key Notes
- Use a periodontal probe with 1-2 mm increments; record probing depths at six sites per tooth.
- Identify furcation involvement using a Nabers probe; classify as Grade I, II, or III.
- Scaling and root planing aim to remove biofilm, calculus, and endotoxins from root surfaces.
- Use appropriate instrument design: sickle scalers for supragingival, curettes for subgingival.
- Maintain a consistent fulcrum and adapt the instrument to tooth anatomy.
- Periodontal disease staging (I-IV) and grading (A-C) based on severity and risk factors.
Must Know
- Normal probing depth: 1-3 mm; bleeding on probing indicates inflammation.
- Furcation Grade I: <3 mm horizontal loss; Grade II: >3 mm but not through; Grade III: through-and-through.
- Gracey curettes: area-specific (e.g., #11-12 for mesial of posterior teeth).
- Sharpening angle: 70-80 degrees for curettes; maintain original shape.
Clinical and Exam Application
- For a patient with generalized Stage III Grade B periodontitis, plan quadrant scaling and root planing with 4-6 week reevaluation.
- When probing a molar with furcation, use a curved probe to assess horizontal attachment loss.
- After scaling, check for residual calculus using an explorer; smooth root surface indicates complete debridement.
High-Yield Distinctions
- Chronic vs. aggressive periodontitis: aggressive has rapid attachment loss and familial pattern.
- Necrotizing periodontal diseases: painful, rapid destruction, associated with stress and smoking.
- Peri-implant mucositis vs. peri-implantitis: mucositis is reversible inflammation without bone loss.
Common Pitfalls
- Using excessive force during scaling, causing root surface damage.
- Failing to detect subgingival calculus due to inadequate tactile sensitivity.
- Not documenting probing depths and bleeding points accurately.
Review Tasks
- Practice probing on a typodont or partner; record six-point measurements.
- Review instrument sharpening techniques and test sharpness on a test stick.
- Study the 2017 AAP/EFP periodontal disease classification.
Local Anesthesia Administration and Pain Control
Syllabus Focus
- Anatomy of trigeminal nerve branches
- Local anesthetic agents: types, doses, and contraindications
- Injection techniques: infiltration, block, and field block
- Complications and management
Key Notes
- Maximum dose of lidocaine 2% with epinephrine: 7 mg/kg, not to exceed 500 mg (about 5 cartridges for a 70 kg adult).
- Articaine 4% with epinephrine: 7 mg/kg, max 7 cartridges (70 kg adult).
- For mandibular anesthesia, the inferior alveolar nerve block is most common; target the mandibular foramen.
- Aspirate before injection to avoid intravascular administration.
- Use topical anesthetic (e.g., 20% benzocaine) to reduce needle insertion pain.
- Recognize signs of local anesthetic toxicity: perioral numbness, metallic taste, seizures, cardiac arrest.
Must Know
- Nerve supply: maxillary division (V2) and mandibular division (V3) of trigeminal nerve.
- Landmarks for IA block: coronoid notch, pterygomandibular raphe, occlusal plane.
- Contraindications: allergy to amide anesthetics, severe liver disease, methemoglobinemia (with prilocaine).
- Epinephrine contraindications: uncontrolled hyperthyroidism, severe hypertension, MAOI use.
Clinical and Exam Application
- For a mandibular molar requiring extraction, administer IA block and long buccal nerve block.
- If a patient reports a history of allergy to 'caine' anesthetics, consider using diphenhydramine or consult.
- When injecting, if patient experiences paresthesia, stop and withdraw needle; document and monitor.
High-Yield Distinctions
- Lidocaine vs. articaine: articaine has higher lipid solubility and better bone penetration.
- Infiltration vs. block: infiltration anesthetizes terminal nerve endings; block anesthetizes a larger nerve trunk.
- Vasoconstrictors: epinephrine prolongs anesthesia and reduces bleeding; contraindicated in certain cardiac conditions.
Common Pitfalls
- Injecting too quickly, causing pain and tissue damage.
- Failing to aspirate, leading to intravascular injection and potential toxicity.
- Overlooking patient's medical history (e.g., anticoagulants) that may affect injection safety.
Review Tasks
- Practice identifying injection landmarks on a skull model.
- Calculate maximum doses for different agents based on patient weight.
- Review management of local anesthetic overdose and allergic reactions.
Diagnostic Radiography and Imaging Interpretation
Syllabus Focus
- Radiation physics and safety (ALARA principle)
- Intraoral and extraoral imaging techniques
- Radiographic interpretation: caries, periodontal disease, pathology
- Quality assurance and legal considerations
Key Notes
- Use the ALARA principle: As Low As Reasonably Achievable, using appropriate exposure factors and shielding.
- For intraoral radiographs, use paralleling technique for minimal distortion; bisecting angle technique as alternative.
- Identify normal anatomical landmarks: maxillary sinus, mandibular canal, mental foramen, etc.
- Radiographic caries appear as radiolucencies; interproximal caries are best detected on bitewings.
- Periodontal bone loss appears as horizontal or vertical radiolucency; furcation involvement may be visible.
- Quality assurance: maintain logs of exposure settings, film processing, and equipment maintenance.
Must Know
- Lead apron and thyroid collar for all patients; pregnant patients may require additional precautions.
- Bitewing radiographs: used for detecting interproximal caries and evaluating crestal bone levels.
- Periapical radiographs: show entire tooth and surrounding bone; used for endodontic evaluation.
- Panoramic radiograph: extraoral view of entire dentition and jaws; useful for impacted teeth and pathology.
Clinical and Exam Application
- When a patient presents with a deep carious lesion on #19, take a periapical to assess periapical pathology.
- For a patient with generalized periodontitis, take vertical bitewings to evaluate bone loss.
- If a radiolucency is seen near the apex of a tooth, consider periapical abscess or granuloma.
High-Yield Distinctions
- Radiolucent vs. radiopaque: radiolucent structures (e.g., pulp, caries) appear dark; radiopaque (e.g., enamel, bone) appear light.
- Caries depth: incipient (enamel only), moderate (dentin), severe (pulp involvement).
- Periodontal bone loss patterns: horizontal (generalized) vs. vertical (localized, angular).
Common Pitfalls
- Overlapping interproximal contacts due to incorrect horizontal angulation.
- Elongation or foreshortening due to incorrect vertical angulation.
- Misinterpreting cervical burnout as caries (cervical burnout is a normal radiolucent zone).
Review Tasks
- Practice mounting and interpreting a full-mouth series of radiographs.
- Review anatomical landmarks on panoramic and periapical images.
- Study the ADA/FDA guidelines for prescribing dental radiographs.
Restorative Procedures and Dental Material Science
Syllabus Focus
- Caries classification and cavity preparation
- Dental materials: amalgam, composite, glass ionomer
- Matrix and wedge placement
- Finishing and polishing restorations
Key Notes
- Class I caries: pits and fissures of occlusal surfaces; Class II: proximal surfaces of posterior teeth.
- Amalgam: high compressive strength, requires mechanical retention; contraindicated in esthetic areas.
- Composite: bonded to tooth structure, requires etching and adhesive; polymerization shrinkage is a concern.
- Glass ionomer: releases fluoride, bonds chemically; used for cervical lesions and pediatric restorations.
- Matrix band (e.g., Tofflemire) and wedge are used to create proper proximal contour and contact.
- Finishing and polishing: use fine diamonds or carbide burs, then rubber cups and polishing paste.
Must Know
- GV Black classification: Class I-VI based on location.
- Amalgam condensation: use small increments and overpack to avoid voids.
- Composite layering: place increments ≤2 mm to reduce shrinkage stress.
- Etching time: 15-30 seconds for enamel, 15 seconds for dentin (self-etch systems vary).
Clinical and Exam Application
- For a Class II composite on #30, place a sectional matrix and wedge to restore proximal contact.
- When restoring a deep carious lesion, place a glass ionomer liner (e.g., Vitrebond) before composite.
- For a patient with high caries risk, consider using a fluoride-releasing material like resin-modified glass ionomer.
High-Yield Distinctions
- Amalgam vs. composite: amalgam is stronger but less esthetic; composite bonds but has shrinkage.
- Glass ionomer vs. composite: GI bonds chemically and releases fluoride but is less wear-resistant.
- Self-etch vs. total-etch adhesives: self-etch is less technique-sensitive but may have lower bond strength to enamel.
Common Pitfalls
- Inadequate isolation (saliva contamination) leading to bond failure.
- Overhanging margins due to improper matrix adaptation.
- Not curing composite in increments, leading to excessive shrinkage and postoperative sensitivity.
Review Tasks
- Practice cavity preparation on extracted teeth or typodonts.
- Review material properties and indications from the ADEX manual.
- Study finishing and polishing techniques for different materials.
Clinical Infection Control and Jurisprudence
Syllabus Focus
- Standard precautions and OSHA regulations
- Sterilization and disinfection methods
- Dental unit waterline management
- Legal and ethical responsibilities
Key Notes
- Use personal protective equipment (PPE): gloves, mask, eyewear, and gown for all patient care.
- Hand hygiene: wash with soap and water or use alcohol-based hand rub before and after patient contact.
- Sterilization: use autoclave (steam under pressure) for critical and semi-critical instruments; monitor with biological indicators.
- Disinfection: use EPA-registered hospital disinfectants for clinical surfaces; intermediate-level for non-critical surfaces.
- Dental unit waterlines: flush lines at the beginning of the day and between patients; use antimicrobial agents to control biofilm.
- Jurisprudence: follow state dental practice acts; maintain patient confidentiality (HIPAA); obtain informed consent.
Must Know
- CDC guidelines for infection control in dental settings.
- OSHA bloodborne pathogens standard: require exposure control plan, hepatitis B vaccination, and training.
- Spaulding classification: critical (enters sterile tissue), semi-critical (contacts mucous membranes), non-critical (intact skin).
- Autoclave parameters: 121°C at 15 psi for 30 minutes (gravity) or 134°C at 30 psi for 4 minutes (pre-vacuum).
Clinical and Exam Application
- After treating a patient with active tuberculosis, use N95 respirator and negative pressure room if available.
- When a needlestick injury occurs, immediately wash the site, report to supervisor, and follow post-exposure protocol.
- For a patient requesting their dental records, provide within a reasonable time and comply with HIPAA.
High-Yield Distinctions
- Sterilization vs. disinfection: sterilization kills all microorganisms including spores; disinfection reduces but does not eliminate spores.
- Critical vs. semi-critical: critical items (e.g., surgical instruments) must be sterilized; semi-critical (e.g., mouth mirrors) can be high-level disinfected.
- Chemical indicators (tape) vs. biological indicators (spore test): biological indicators confirm sterilization efficacy.
Common Pitfalls
- Reusing disposable items (e.g., prophylaxis angles) leading to cross-contamination.
- Not changing gloves between patients or after touching contaminated surfaces.
- Failing to document sterilization cycles and biological indicator results.
Review Tasks
- Review CDC and OSHA guidelines for infection control.
- Practice proper donning and doffing of PPE.
- Study state-specific dental practice act and jurisprudence requirements.
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 ADEX manuals and forms from the official website.
- Focus on high-yield topics: medical emergencies, local anesthesia doses, radiographic interpretation, and infection control.
- Practice clinical skills on mannequins or typodonts to improve hand-eye coordination.
- Take timed practice exams to build stamina and identify weak areas.
- Join study groups or review sessions to discuss challenging concepts.
- Ensure you understand the legal and ethical responsibilities of a dental hygienist.
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.