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2026 Statistics

Key Facts: Eidgenössisches Examen Zahnmedizin Exam

150 MCQs

Exam Questions

BAG Examination Regulations

4.5 Hours

Exam Duration

MEBEKO Zahnmedizinausschuss

CHF 1,700

Total Federal Fees

BAG Gebührenverordnung MedBG

Tablet

Electronic Testing

Federal Examination Centers

Lifetime

Diploma Validity

Swiss Federal Law (MedBG)

100

Practice Questions

OpenExamPrep

The Eidgenössisches Examen Zahnmedizin is the definitive Swiss federal dental licensing exam administered by the BAG under MedBG. It consists of a 150-question electronic tablet exam over 4.5 hours in German and French, testing comprehensive clinical competence across all dental specialties.

Sample Eidgenössisches Examen Zahnmedizin Practice Questions

Try these sample questions to test your Eidgenössisches Examen Zahnmedizin exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 22-year-old patient presents for a routine dental examination. Visual inspection of the occlusal surface of tooth 46 reveals a distinct whitish opacity in the pit and fissure area when wet, which becomes more pronounced and chalky upon air drying for 5 seconds. The enamel surface remains smooth and tactilely intact without surface micro-cavitation or underlying dark dentinal shadowing. According to the International Caries Detection and Assessment System (ICDAS), which code is assigned, and what is the primary management strategy?

A.ICDAS Code 1 (active initial lesion); non-operative management including biofilm removal, dietary counseling, and topical fluoride application

B.ICDAS Code 3 (micro-cavitation); minimal invasive preventive resin restoration (PRR) with flowable composite

C.ICDAS Code 2 (distinct visual change in enamel); operative excavation and placement of a single-surface composite restoration

D.ICDAS Code 4 (underlying dentin shadow); direct access cavity preparation and restoration with glass ionomer cement

Explanation: ICDAS Code 1 represents the first visual change in enamel, visible as an opacity only after thorough air-drying (or confined to the base of a fissure). Because the surface is intact and non-cavitated, non-operative management (biofilm control, topical fluoride varnish, oral hygiene coaching) is the gold-standard treatment to promote lesion arrest and remineralization without drilling.

2A 34-year-old patient presents with a deep occlusal carious lesion on tooth 36 extending into the inner third of the dentin on bitewing radiography. The tooth tests positive and normally to cold sensibility testing and is asymptomatic with no tenderness to percussion. Periapical radiography shows an intact lamina dura without periapical radiolucency. According to contemporary consensus on deep caries management (International Caries Consensus Collaboration / European consensus), what is the most appropriate carious tissue excavation protocol to preserve pulpal vitality?

A.Complete (non-selective) carious tissue excavation to hard, sound dentin throughout the entire cavity floor regardless of pulp proximity

B.Selective carious tissue removal to soft dentin over the pulpal wall while establishing peripheral margins in hard, clean dentin, followed by immediate adhesive restoration

C.Stepwise excavation leaving soft dentin, placing a temporary zinc oxide-eugenol cement, and performing mandatory re-entry after 6 months to remove remaining soft dentin

D.Immediate prophylactic elective root canal therapy because radiographic depth in the inner dentinal third carries an unacceptable risk of pulpal failure

Explanation: Selective carious tissue removal to soft (or leathery) dentin over the pulpal floor in asymptomatic vital teeth with deep lesions significantly reduces the risk of pulp exposure compared to non-selective excavation to hard dentin. Establishing clean, hard dentinal and enamel peripheral margins ensures an effective adhesive seal, depriving residual bacteria of nutrients and allowing dentinal remineralization and tertiary dentin formation.

3When utilizing a modern 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP)-containing universal adhesive on a cavity involving both aprismatic enamel margins and deep dentin, which application protocol provides optimal microtensile bond strength and marginal integrity?

A.Total self-etch mode without any phosphoric acid pre-treatment of enamel or dentin

B.Full etch-and-rinse mode applying 37% phosphoric acid to both enamel and deep dentin for 30 seconds followed by air-drying until completely desiccated

C.Selective enamel etching by applying 35–37% phosphoric acid exclusively to the enamel margins for 15 seconds, rinsing, followed by active application of the universal adhesive to both etched enamel and unetched dentin

D.Self-etch application to enamel followed by separate phosphoric acid etching of the dentin floor only

Explanation: Selective enamel etching with phosphoric acid (15 seconds on enamel only) optimizes micro-retentive enamel bonding while allowing the 10-MDP universal adhesive to interact mildly with dentinal hydroxyapatite in self-etch mode. This forms stable nanolayers of insoluble MDP-calcium salts without denaturing deep collagen fibrils or risking incomplete resin infiltration and postoperative sensitivity.

4A 28-year-old competitive swimmer presents with extensive cupping of the cusp tips and loss of surface anatomy on the palatal surfaces of the maxillary incisors and occlusal surfaces of first molars. The patient reports frequent consumption of isotonic sports drinks and lemon-infused water. What is the critical pH threshold below which dental enamel hydroxyapatite undergoes active chemical dissolution in the oral environment, compared to fluorapatite?

A.Hydroxyapatite dissolves below pH 6.8, whereas fluorapatite dissolves below pH 6.2

B.Hydroxyapatite dissolves below pH 6.0, whereas fluorapatite dissolves below pH 5.5

C.Hydroxyapatite dissolves below pH 4.0, whereas fluorapatite dissolves below pH 3.5

D.Hydroxyapatite dissolves below pH 5.5, whereas fluorapatite dissolves below pH 4.5

Explanation: The critical pH for pure enamel hydroxyapatite dissolution is approximately 5.5. When fluoride is incorporated into the crystal lattice forming fluorapatite, the crystal structure becomes significantly more acid-resistant, lowering the critical dissolution pH to approximately 4.5. Most sports drinks, carbonated sodas, and citrus juices have a pH between 2.5 and 3.5, causing direct chemical erosion.

5During the direct restoration of a deep Class I occlusal cavity on a mandibular second molar, which cavity geometry factor (C-factor) calculation represents the highest polymerization contraction stress on adhesive cavity walls, and how is this stress minimized?

A.C-factor of 5 (5 bonded walls to 1 unbonded surface); minimized by using an incremental oblique layering technique or stress-relieving flowable base

B.C-factor of 0.2 (1 bonded wall to 5 unbonded surfaces); minimized by bulk curing with high-intensity light in under 5 seconds

C.C-factor of 1 (equal bonded and unbonded surfaces); minimized by using non-adhesive amalgam condensations

D.C-factor of 2 (2 bonded walls to 1 unbonded surface); minimized by placing thick horizontal layers exceeding 4 mm

Explanation: The Cavity Configuration Factor (C-factor) is the ratio of bonded to unbonded (free) surface areas. A Class I box cavity has 5 bonded walls (pulpal, mesial, distal, buccal, lingual) and only 1 unbonded surface, yielding a C-factor of 5/1 = 5. This high ratio restricts resin flow during polymerization, generating high interfacial shrinkage stress that can cause debonding, marginal gaps, and postoperative pain; it is mitigated by incremental oblique layering or low-stress bulk-fill composites.

6What is the primary physiochemical mechanism by which professional topical fluoride varnish (e.g., 5% NaF, 22,600 ppm F⁻) promotes remineralization and inhibits demineralization on clean tooth surfaces?

A.Immediate irreversible systemic incorporation into the blood supply to alter enamel amelogenesis

B.Formation of a temporary calcium fluoride-like (CaF₂) reservoir layer on the enamel surface that slowly releases fluoride ions during cariogenic acid challenges

C.Chemical etching of the outer aprismatic enamel to eliminate surface bacterial retention grooves

D.Permanent sealing of dentinal tubules through resin copolymerization

Explanation: High-concentration topical fluoride applications (such as 5% NaF varnish containing 22,600 ppm F⁻) deposit a microscopic, globular calcium fluoride-like (CaF₂) precipitate on the enamel and dentin surface. Under neutral pH, this reservoir is stabilized by salivary phosphate proteins; when local pH drops during plaque bacterial acid production, the CaF₂ dissociates to release free fluoride and calcium ions, stimulating fluorapatite formation and inhibiting demineralization.

7A practitioner evaluates modern bulk-fill resin composites for posterior Class II restorations. Which technological innovation distinguishes bulk-fill resin composites from conventional paste composites, allowing safe light-curing increments of up to 4–5 mm depth of cure?

A.Complete elimination of dimethacrylate monomers in favor of water-soluble polyacrylic acid matrices

B.High concentrations of macrofill quartz particles exceeding 50 microns to scatter curing light universally

C.Enhanced matrix translucency, optimized refractive index matching between resin and fillers, and novel high-efficiency photoinitiators (such as Ivocerin or TPO)

D.Incorporation of heavy metals (lead and mercury) to generate secondary internal radiative heat

Explanation: Bulk-fill composites achieve a reliable 4–5 mm depth of cure by increasing material translucency, matching the refractive indices of the resin matrix and inorganic filler particles in the uncured state, and utilizing highly reactive photoinitiator systems (such as germanium-based Ivocerin or trimethylbenzoylphosphine oxide [TPO]) alongside stress-relieving monomers or dynamic covalent network chemistry.

8A dental practitioner is preparing to adhesively cement an indirect restoration. Which pair of ceramic substrate conditioning protocols correctly matches the respective restorative material?

A.Lithium disilicate: 9% hydrofluoric acid for 5 minutes without silane; 3Y-TZP Zirconia: 37% phosphoric acid etching for 60 seconds followed by silane

B.Lithium disilicate: Sandblasting with 110 μm alumina at 4 bar without etching; 3Y-TZP Zirconia: 9% hydrofluoric acid for 20 seconds

C.Lithium disilicate: 37% phosphoric acid etching for 15 seconds followed by 10-MDP primer; 3Y-TZP Zirconia: Diamond bur roughening only

D.Lithium disilicate: ~5% hydrofluoric acid etching for 20 seconds followed by silane coupling agent; 3Y-TZP Zirconia: Airborne-particle abrasion (sandblasting with ≤50 μm Al₂O₃ at ~1.5–2 bar) followed by a 10-MDP-containing primer

Explanation: Glass-ceramics (such as lithium disilicate) contain a silica-based vitreous phase that is etched with ~5% hydrofluoric acid for 20 seconds to create micro-porosities, followed by application of a silane coupling agent for chemical bonding. High-strength polycrystalline ceramics (such as 3Y-TZP zirconia) lack a glassy phase and cannot be etched with hydrofluoric acid; they require air-abrasion (sandblasting with ≤50 μm Al₂O₃ at 1.5–2.0 bar) followed by a phosphate monomer (10-MDP) primer to bond to zirconium oxides.

9A 52-year-old patient presents with wedge-shaped, non-carious cervical lesions (NCCLs) on the buccal aspects of teeth 14, 15, and 24. The lesions have sharp internal line angles and extend 1.5 mm into dentin without pulpal symptoms or active caries. The patient exhibits heavy occlusal wear facets, canine guidance loss, and group function in lateral excursions. What is the primary biomechanical mechanism of this lesion type (abfraction), and what is the initial management?

A.Tensile and compressive stresses from occlusal loading causing microfractures of enamel and dentin crystals at the cervical fulcrum; managed by occlusal adjustment/splint therapy and monitoring or restoring symptomatic/deep lesions with a flexible resin composite

B.Bacterial demineralization from chronic gingival plaque accumulation; managed by subgingival ultrasonic scaling and systemic amoxicillin

C.Chemical dissolution caused exclusively by gastric hydrochloric acid reflux; managed by immediate full-coverage metal-ceramic crowns

D.Mechanical abrasion solely from horizontal toothbrushing with hard bristles; managed by instructing the patient to discontinue brushing altogether

Explanation: Abfraction is theorized to result from flexural occlusal loading that generates cyclic tensile and shear stresses at the cervical fulcrum (cementoenamel junction), breaking the chemical bonds between hydroxyapatite crystals and leading to wedge-shaped defects. Management involves diagnosing and addressing occlusal parafunction (e.g., bite splints), monitoring non-progressing asymptomatic lesions, or restoring them using resilient materials (such as microfilled or flowable composites with lower modulus of elasticity) when symptomatic or structurally compromised.

10Silver Diamine Fluoride (38% SDF) is increasingly used in minimally invasive dentistry. Which statement accurately describes its dual antimicrobial and remineralizing mechanism of action and its primary clinical side effect?

A.Silver ions dissolve enamel to enhance fluoride entry, but the agent causes severe irreversible pulpal necrosis in 100% of vital teeth

B.Silver ions exert potent broad-spectrum bactericidal action by rupturing cell walls and inhibiting DNA replication, while fluoride promotes fluorapatite formation; the main side effect is permanent dark/black staining of demineralized dentin

C.The compound acts purely as a temporary desensitizing varnish with no bactericidal properties, causing bright yellow fluorescent discoloration under UV light

D.SDF replaces composite resins completely by hardening into an aesthetic white tooth-colored polymer without any aesthetic drawbacks

Explanation: Silver Diamine Fluoride (38% SDF, containing ~253,800 ppm Ag and 44,800 ppm F⁻) combines the antimicrobial power of silver ions (which denature bacterial enzymes, rupture peptidoglycan walls, and inhibit bacterial replication) with the remineralizing efficacy of high-concentration fluoride. Its principal clinical limitation is the permanent dark/black staining of carious and demineralized tissue due to silver precipitation (silver phosphate/oxide).

About the Eidgenössisches Examen Zahnmedizin Exam

The Eidgenössisches Examen Zahnmedizin (Swiss Federal Dental Licensing Examination) is the statutory national licensing examination required under the Federal Act on University Medical Professions (MedBG / LPMéd) to practice dentistry independently or enter accredited specialist training (Fachzahnarzt SSO) in Switzerland. Administered annually by the Federal Office of Public Health (BAG) and the Medical Professions Commission (MEBEKO), the examination evaluates broad clinical reasoning, scientific competence, diagnostic acumen, and treatment planning across cariology, periodontology, endodontics, fixed and removable prosthodontics, implantology, oral surgery, oral medicine/stomatology, orthodontics, pediatric dentistry, dental radiology, and medical emergencies. Language and Format Disclosure: The official BAG federal examination is delivered in Switzerland's official languages (German and French) on secure tablet computers. This OpenExamPrep question bank is an English-language multiple-choice study adaptation designed to support Swiss dental students and international dentists seeking MEBEKO recognition by providing rigorous, evidence-based clinical vignettes and detailed educational rationales.

Assessment

One single-day electronic examination session lasting 4.5 hours (270 minutes). The exam is multidisciplinary and interdisciplinary, covering all key areas of modern dentistry, dental diagnostics, pharmacology, radiation protection, and Swiss medical law.

Time Limit

270 minutes (4.5 hours)

Passing Score

Criterion-referenced standard passing score established by the Federal Dental Examination Commission (MEBEKO) utilizing the Angoff/Nedelsky procedure (typically ~60–65% adjusted raw score)

Exam Fee

CHF 1,700 total (CHF 200 registration fee + CHF 1,000 examination fee + CHF 500 federal diploma issuance fee) (Bundesamt für Gesundheit (BAG) / Federal Office of Public Health in collaboration with MEBEKO (Medizinalberufekommission) and the Swiss University Dental Centers (Basel, Bern, Geneva, Zurich))

Eidgenössisches Examen Zahnmedizin Exam Content Outline

20%

Cariology, Restorative Dentistry & Preventive Dentistry

Etiopathogenesis of dental caries, ICDAS/ICCMS classification, remineralization protocols, dental erosion and abrasion, adhesive systems (etch-and-rinse vs self-etch, universal adhesives), resin composite polymers, bulk-fill restorations, all-ceramic indirect restorations (lithium disilicate, zirconia), and minimally invasive intervention principles.

18%

Periodontology & Peri-implant Diseases

2018 EFP/AAP Classification of Periodontal and Peri-implant Diseases (Staging and Grading), subgingival biofilm dysbiosis, non-surgical mechanical debridement, adjunctive antimicrobials (van Winkelhoff cocktail), resective and regenerative periodontal surgery (enamel matrix derivatives, GTR), furcation involvement, and peri-implant mucositis vs peri-implantitis management.

16%

Endodontics & Dental Traumatology

AAE pulpal and apical diagnostic classifications, root canal anatomy, chemo-mechanical instrumentation, irrigation protocols (NaOCl, EDTA activation), hydraulic calcium silicate cements (MTA, bioceramics), single-visit vs multi-visit protocols, endodontic retreatment, apical microsurgery, and IADT guidelines for dental trauma (luxation, avulsion, crown-root fractures).

18%

Reconstructive Dentistry, Prosthodontics & Occlusion

Fixed prosthodontic principles (preparation geometry, finish lines, biological width/supracrestal tissue attachment), removable dental prostheses (RDP design, Kennedy classification, clasp biophysics), implant prosthetics (screw- vs cement-retained, platform switching), craniomandibular disorders (TMD/CMD diagnosis according to DC/TMD), and digital workflow (intraoral scanning, CAD/CAM).

14%

Oral Surgery, Stomatology & Oral Medicine

Surgical extractions and impacted third molar management, odontogenic space infections, jaw cysts and odontogenic tumors, oral premalignant lesions (leukoplakia, erythroplakia, oral lichen planus), oral squamous cell carcinoma (OSCC), medication-related osteonecrosis of the jaw (MRONJ), and surgical dental implant placement.

14%

Orthodontics, Pediatric Dentistry & Radiology/Pharmacology

Angle malocclusion classification, cephalometric analysis, early interceptive orthodontic treatment, primary dentition caries and pulp therapies (pulpotomy, pulpectomy, stainless steel crowns), molar-incisor hypomineralization (MIH), dental radiology (CBCT indications, ALADA/ALARA radiation protection according to Swiss StSV), local anesthetics (articaine dosages, nerve blocks), and medical emergencies in the dental practice.

How to Pass the Eidgenössisches Examen Zahnmedizin Exam

What You Need to Know

Passing score: Criterion-referenced standard passing score established by the Federal Dental Examination Commission (MEBEKO) utilizing the Angoff/Nedelsky procedure (typically ~60–65% adjusted raw score)
Assessment: One single-day electronic examination session lasting 4.5 hours (270 minutes). The exam is multidisciplinary and interdisciplinary, covering all key areas of modern dentistry, dental diagnostics, pharmacology, radiation protection, and Swiss medical law.
Time limit: 270 minutes (4.5 hours)
Exam fee: CHF 1,700 total (CHF 200 registration fee + CHF 1,000 examination fee + CHF 500 federal diploma issuance fee)

Keys to Passing

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

Eidgenössisches Examen Zahnmedizin Study Tips from Top Performers

1Master the 2018 EFP/AAP Periodontal Staging & Grading Matrix: Be fluent in diagnosing Stage I–IV and Grade A–C periodontitis based on interdental clinical attachment loss (CAL), radiographic bone loss (RBL), tooth loss, probing pocket depths, and systemic risk factors (smoking, HbA1c).

2Memorize IADT Traumatology Guidelines: Know exact splinting durations (2 weeks for subluxation/extrusive luxation/avulsion, 4 weeks for lateral luxation/alveolar fracture/middle third root fracture) and emergency storage media (Hank's Balanced Salt Solution, milk, saliva).

3Understand Chemo-mechanical Endodontic Protocols: Be proficient in NaOCl concentrations (1–3% vs 5.25%), EDTA 17% smear layer removal, ultrasonic/sonic activation, and hydraulic calcium silicate (MTA/bioceramic) apical plugs.

4Review Reconstructive Biomechanics & Materials: Know the minimum occlusal and axial clearance requirements for lithium disilicate vs 3Y/4Y/5Y-TZP monolithic zirconia, ferrule effect dimensions (≥1.5–2.0 mm height, ≥1.0 mm dentin wall thickness), and biologic width (supracrestal tissue attachment ~2–3 mm).

5Learn Swiss Radioprotection & Maxillofacial Pharmacology: Master Swiss radiation ordinance (StSV) principles for CBCT, maximum local anesthetic doses (articaine 4% with 1:100,000 epinephrine: 7.0 mg/kg up to 500 mg), antibiotic prophylaxis indications, and MRONJ staging and prevention.

Frequently Asked Questions

What is the Eidgenössisches Examen Zahnmedizin?

The Eidgenössisches Examen Zahnmedizin (Swiss Federal Dental Examination) is the federally mandated licensing examination conducted under the Swiss Federal Act on Medical Professions (MedBG). Passing this exam confers the Swiss Federal Dental Diploma (Eidgenössisches Zahnarztdiplom), which is legally required to practice dentistry in Switzerland and to be listed in the Federal Register of Medical Professions (MedReg).

What is the official format and duration of the examination in 2026?

The examination consists of 150 computer-based multiple-choice items administered via standardized tablets during a single 4.5-hour (270 minutes) session. Questions include Type A (single best answer out of 4 or 5 options) and Type Kprim (multiple true/false items with four sub-statements).

What are the official examination fees for the Eidgenössische Prüfung Zahnmedizin?

According to the official fee schedule of the Federal Office of Public Health (BAG), candidate fees comprise: CHF 200 registration/dossier fee, CHF 1,000 examination fee, and CHF 500 for the issuance of the Federal Diploma upon successful completion, totaling CHF 1,700.

In what languages is the official federal exam administered?

The official exam is administered in Switzerland's national languages: German and French. Candidates select their examination language upon registration. This OpenExamPrep study bank is an English-language adaptation created to provide international-standard clinical preparation.

Who is eligible to take the Swiss Federal Dental Licensing Exam?

Candidates must have successfully completed an accredited Master of Dental Medicine (M Med Dent) program at one of the four Swiss dental faculties (Basel, Bern, Geneva, or Zurich) or hold a foreign dental degree recognized by MEBEKO as eligible for the federal licensing examination.

What happens if a candidate fails the federal dental exam?

Under Article 24 of the MedBG, candidates who do not pass the examination are permitted two retake opportunities (for a maximum of three total attempts). Retakes take place during the regular annual examination session in the subsequent autumn.