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Exam Review

Key Facts: Taiwan Dentist Licensing Examination Exam

480 items

Total questions across six computer-based papers in two examination stages (80 questions per 60-minute paper).

MOEX Staged Examination Regulations for Dentists

60 points

Minimum average score required per stage to pass, with no individual paper scoring zero.

MOEX Examination Scoring Rules

NTD 2,500

Computer-based testing (CBT) examination registration fee per stage.

MOEX Examination Fee Standards, fee appendix effective September 1, 2025 (FL044192)

2 stages

Preclinical basic science stage followed by clinical post-graduation licensing stage.

Physicians Act and MOEX Examination Framework

Independent English-language MCQ study bank for Taiwan's two-stage Dentist Licensing Examination, covering both foundational basic dental sciences and core clinical dentistry disciplines.

Sample Taiwan Dentist Licensing Examination Practice Questions

Try these sample questions to review concepts for the Taiwan Dentist Licensing Examination exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 105+ question experience with AI tutoring.

1On which anatomical cusp and surface of the permanent maxillary first molar is the Cusp of Carabelli typically situated?
A.Distobuccal surface of the distobuccal cusp
B.Mesiolingual surface of the mesiolingual cusp
C.Mesiobuccal surface of the mesiobuccal cusp
D.Distolingual surface of the distolingual cusp
Explanation: The Cusp of Carabelli (tuberculum anomale) is an accessory cusp located on the palatal (lingual) surface of the mesiolingual cusp of the permanent maxillary first molar. It is an important morphological landmark and varies in expression from a small pit or groove to a fully developed cusp.
2A dentist performs an inferior alveolar nerve block (IANB). What anatomical structure lies immediately anterior to the mandibular foramen and provides an essential bony landmark for needle positioning?
A.Lingula
B.Mental spine
C.Mylohyoid ridge
D.Coronoid notch
Explanation: The lingula is a sharp, tongue-shaped bony projection on the medial aspect of the mandibular ramus that borders the anterior margin of the mandibular foramen. The sphenomandibular ligament attaches to the lingula, and the local anesthetic solution must be deposited just superior and posterior to the lingula in the pterygomandibular space.
3Which histological feature of mature dental enamel represents long-period incremental growth lines, rather than daily cross-striations?
A.Hunter-Schreger bands
B.Striae of Retzius
C.Enamel lamellae
D.Enamel spindles
Explanation: Striae of Retzius are incremental growth lines in enamel representing weekly (approximately 6–11 days) rhythmic pauses or physiological alterations in ameloblast secretory activity during matrix mineralization. When these lines reach the tooth surface, they manifest clinically as perikymata.
4During odontogenesis, which embryological structure guides root shape and induces radicular dentin formation before fragmenting into the epithelial rests of Malassez?
A.Stellate reticulum
B.Dental follicle
C.Hertwig epithelial root sheath (HERS)
D.Stratum intermedium
Explanation: Hertwig epithelial root sheath (HERS) is formed by the apical elongation and fusion of the inner and outer enamel epithelia without intervening stratum intermedium or stellate reticulum. HERS induces the adjacent dental papilla mesenchymal cells to differentiate into radicular odontoblasts; after dentin deposition begins, HERS breaks down into clusters of cells known as the epithelial rests of Malassez.
5In cariology and dental biochemistry, what is the approximate critical pH threshold below which human dental enamel begins net mineral dissolution?
A.pH 7.0
B.pH 6.5
C.pH 5.5
D.pH 4.0
Explanation: The critical pH for dental enamel is generally accepted as 5.5. When biofilm fluid pH drops below 5.5 due to acidogenic bacterial fermentation of dietary carbohydrates, the local fluid becomes undersaturated with respect to hydroxyapatite, causing demineralization. For dentin and cementum, the critical pH is higher (around 6.2–6.7) because of their lower mineral content and higher carbonate incorporation.
6A routine biopsy of a radiolucent multilocular lesion in the posterior mandible shows islands of odontogenic epithelium with peripheral palisading columnar cells demonstrating reversed nuclear polarity and central stellate reticulum-like cells. What is the most likely diagnosis?
A.Dentigerous cyst
B.Ameloblastoma
C.Adenomatoid odontogenic tumor
D.Central giant cell granuloma
Explanation: The histological description of peripheral palisading tall columnar cells with reversed nuclear polarity (nuclei polarized away from the basement membrane, known as Vickers-Gorlin criteria) surrounding loose star-shaped cells resembling the stellate reticulum is pathognomonic for follicular ameloblastoma.
7An alginate gel contracts and expels liquid water onto its surface. What is this process, which can contribute to impression shrinkage independently of evaporation?
A.Imbibition
B.Syneresis
C.Hysteresis
D.Thixotropy
Explanation: Syneresis is contraction of a gel network with expulsion of liquid. Evaporation is a separate route of water loss; both can distort an alginate impression. Pour and store the impression according to the material manufacturer's instructions, since storage tolerance varies by formulation.
8What is the primary cellular mechanism of action by which lidocaine and other aminoamide local anesthetics block sensory nerve transmission?
A.Opening voltage-gated potassium channels to hyperpolarize the axolemma
B.Reversible blockade of voltage-gated sodium channels from the intracellular side
C.Inhibition of acetylcholinesterase at postsynaptic neuromuscular junctions
D.Agonism of peripheral mu-opioid receptors along sensory fibers
Explanation: Local anesthetics penetrate the lipid nerve membrane in their unionized (base) form, re-equilibrate into the ionized (cationic) form in the axoplasm, and bind to the alpha-subunit of voltage-gated sodium channels from within the pore. This prevents sodium influx, halts depolarization, and prevents the propagation of nerve action potentials.
9Which enzyme synthesized by Streptococcus mutans is essential for producing sticky, water-insoluble glucans from dietary sucrose that facilitate bacterial adhesion to enamel surfaces?
A.Hyaluronidase
B.Glucosyltransferase (GTF)
C.Streptokinase
D.Collagenase
Explanation: Streptococcus mutans glucosyltransferases use sucrose to synthesize extracellular glucans. GtfB chiefly produces insoluble glucans, GtfC produces soluble and insoluble products, and GtfD chiefly produces soluble glucans. The insoluble matrix helps bacterial adhesion and cariogenic biofilm accumulation.
10Which muscle of mastication is primarily responsible for depressing the mandible (initiating mouth opening) and pulling the articular disc and condyle anteriorly during jaw protrusion?
A.Temporalis muscle
B.Medial pterygoid muscle
C.Masseter muscle
D.Lateral pterygoid muscle
Explanation: The lateral pterygoid muscle has two heads: the inferior head pulls the mandibular condyle forward onto the articular eminence to initiate mouth opening and protrusion; the superior head coordinates disc movement during controlled jaw closing. The other three masticatory muscles (masseter, temporalis, medial pterygoid) are jaw elevators.

About the Taiwan Dentist Licensing Examination Exam

Independent English-language MCQ study adaptation by OpenExamPrep for 專門職業及技術人員高等考試牙醫師考試分階段考試. MOEX administers the official CBT in Traditional Chinese. This bank is not an official translation, a full exam-format simulation, or a substitute for supervised clinical and practical training.

Exam sponsor: Ministry of Examination (考選部 / MOEX). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Stage 1: 牙醫學（一） (80 items, 60 min) and 牙醫學（二） (80 items, 60 min). Stage 2: 牙醫學（三） (80 items, 60 min), 牙醫學（四） (80 items, 60 min), 牙醫學（五） (80 items, 60 min), and 牙醫學（六） (80 items, 60 min).

Time Limit

360 minutes total (60 minutes per paper across 6 papers in two stages).

Passing Score

Average score of 60/100 for each stage independently, with no paper scoring zero.

Exam / Certification Fees

NTD 2,500 per stage for computerized testing under the fee schedule effective September 1, 2025.

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30 study questions; represents Stage 1 papers (oral anatomy, histology, pathology, pharmacology, materials)

Basic Dental Sciences (牙醫學一、牙醫學二)

Craniofacial and dental morphology, embryology, oral mucosal histology, oral pathology, bone physiology, dental biomaterials, oral microbiology, and dental pharmacotherapy.

24 study questions; Stage 2 Paper 3 topics

Operative Dentistry, Endodontics, and Periodontics (牙醫學三)

Etiology and management of dental caries, composite resin bonding, amalgam restorations, pulpal pathosis, root canal debridement and obturation, gingival diseases, and periodontal surgical techniques.

20 study questions; represents Stage 2 Paper 4

Oral and Maxillofacial Surgery and Dental Radiology (牙醫學四)

Exodontia, impacted third molar management, odontogenic cysts and tumors, facial fractures, local anesthetic anatomy and toxicity, intraoral radiographic principles, and cone-beam computed tomography.

15 study questions; represents Stage 2 Paper 5

Prosthodontics and Occlusion (牙醫學五)

Complete denture fabrication, major and minor connectors in removable partial dentures, fixed prosthodontic finish lines, ceramic materials, implant loading protocols, and articulator kinematics.

16 study questions; Stage 2 Paper 6 topics

Orthodontics, Pediatric Dentistry, and Dental Public Health (牙醫學六)

Angle class classification, cephalometric landmarks, primary tooth pulpotomy and space maintainers, pediatric behavior guidance, community water fluoridation, and national oral health indices.

Preparing for the Taiwan Dentist Licensing Examination Exam

What You Need to Know

  • Passing score: Average score of 60/100 for each stage independently, with no paper scoring zero.
  • Assessment: Stage 1: 牙醫學（一） (80 items, 60 min) and 牙醫學（二） (80 items, 60 min). Stage 2: 牙醫學（三） (80 items, 60 min), 牙醫學（四） (80 items, 60 min), 牙醫學（五） (80 items, 60 min), and 牙醫學（六） (80 items, 60 min).
  • Time limit: 360 minutes total (60 minutes per paper across 6 papers in two stages).
  • Exam / certification fees: NTD 2,500 per stage for computerized testing under the fee schedule effective September 1, 2025. Official sources

Using Our Practice Resources

  • Work through all 105 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Taiwan Dentist Licensing Examination: Suggested Study Strategy

1Master tooth morphology and craniofacial anatomy landmarks, especially cranial nerve distributions and fascial spaces relevant to odontogenic infections and local anesthesia.
2Thoroughly review pulpal and periapical diagnostic categories under American Association of Endodontists (AAE) standards alongside the 2017 AAP/EFP periodontal classification framework.
3Understand the pharmacology and maximum recommended doses (MRD) of dental local anesthetics with vasoconstrictors, as well as management protocols for medical emergencies like anaphylaxis and syncope.
4Focus on removable partial denture design principles (major connectors, rests, and clasps) and fixed prosthodontic margin designs matched to specific restorative materials (e.g., chamfer vs. shoulder).

Frequently Asked Questions

What is the structure of the Taiwan Dentist Licensing Examination?

The examination is divided into two distinct stages administered by MOEX using computer-based testing (CBT). Stage 1 consists of two papers (牙醫學一 and 牙醫學二) assessing basic dental sciences. Stage 2 consists of four papers (牙醫學三 through 牙醫學六) assessing clinical dental subjects including operative dentistry, endodontics, periodontics, oral surgery, radiology, prosthodontics, orthodontics, pediatric dentistry, and dental public health. Each paper contains 80 multiple-choice questions completed in 60 minutes.

What are the eligibility requirements for taking Stage 1 and Stage 2?

Under the Regulations Governing the Staged Examinations for Physicians, Dentists, Traditional Chinese Medicine Practitioners, and Pharmacists, dental students who have completed the prescribed basic science and preclinical curriculum at a recognized university dental school in Taiwan (or an overseas dental school recognized under MOE and MOHW rules) can sit for Stage 1. Candidates must pass Stage 1, graduate with an approved dental degree, and satisfy clinical clerkship/internship criteria before being eligible to sit for Stage 2.

How is the passing grade calculated for the examination?

Under Article 9, each stage requires an arithmetic mean of at least 60/100 with no zero-scoring paper. Article 6 requires passing Stage 2 within six years after passing Stage 1; otherwise Stage 1 must be taken again.

In what language is the official examination delivered?

The official MOEX CBT examination is presented in Traditional Chinese with standard dental and medical terminology, frequently including English medical or anatomical terminology in parentheses for clarity. This OpenExamPrep resource provides an independent English-language MCQ practice bank to help students master core clinical concepts and universal biomedical mechanisms tested on the exam.