Free Practice Questions for UKMPPDG

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Key Facts: UKMPPDG Exam

CBT + OSCE

Official dual assessment components

ukomnakes.kemdiktisaintek.go.id

Exit Exam

National graduation requirement for dental profession

AFDOKGI / Kemdiktisaintek

Lifetime

STR validity under UU No. 17 Tahun 2023

UU No. 17 Tahun 2023 tentang Kesehatan

SKDGI

Underlying national competence standard

Kolegium Dokter Gigi Indonesia

UKMPPDG tests dental graduates across restorative, surgical, prosthodontic, periodontal, and pediatric disciplines. This is an independent 95-question English-language MCQ practice bank by OpenExamPrep.

Sample UKMPPDG Practice Questions

Try these sample questions to review concepts for the UKMPPDG exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 95+ question experience with AI tutoring.

1A 28-year-old male patient presents to the dental clinic complaining of sharp, localized pain in his mandibular left first molar (gigi 36) when drinking cold iced tea. The pain subsides immediately within 2 to 3 seconds after the cold stimulus is removed. Clinical examination reveals deep occlusal caries (karies profunda) without pulp exposure. Percussion and palpation tests are negative. Cold testing with ethyl chloride produces a sharp, transient response that disappears promptly. What is the most likely pulpal diagnosis?

A.Reversible pulpitis (pulpitis reversibel)

B.Symptomatic irreversible pulpitis (pulpitis ireversibel simtomatik)

C.Asymptomatic irreversible pulpitis (pulpitis ireversibel asimtomatik)

D.Pulpal necrosis (nekrosis pulpa)

Explanation: Reversible pulpitis is characterized by sharp, transient pain to thermal stimuli (especially cold) that subsides within 2 to 3 seconds once the stimulus is removed. The pulp remains vital and capable of healing once the irritant (caries) is excavated and an appropriate restoration is placed.

2During cavity preparation for composite restoration on tooth 16 in a 22-year-old female, a mechanical pulp exposure of approximately 0.5 mm occurs under rubber dam isolation. The tooth was asymptomatic preoperatively, hemorrhage is bright red and easily controlled within 2 minutes with sterile saline irrigation, and the patient has no history of spontaneous pain. What is the recommended treatment of choice?

A.Immediate root canal treatment (perawatan saluran akar)

B.Direct pulp capping (kaping pulpa direk) with MTA or calcium silicate-based cement

C.Indirect pulp capping (kaping pulpa indirek) with resin-modified glass ionomer

D.Pulpotomy with formocresol application

Explanation: Direct pulp capping (kaping pulpa direk) is indicated for vital asymptomatic permanent teeth when a small mechanical exposure (<1 mm) occurs under clean, isolated conditions and hemostasis is achieved within minutes. Bioactive materials such as Mineral Trioxide Aggregate (MTA) or calcium hydroxide promote dentin bridge formation.

3Glass Ionomer Cement (GIC) is widely utilized in operative dentistry due to its direct adhesive capability to tooth substrates. What is the fundamental mechanism responsible for the true chemical adhesion of GIC to enamel and dentin?

A.Micromechanical interlocking within hybridized collagen fibrils

B.Polymerization of cross-linked dimethacrylate resin monomers

C.Free-radical addition reaction initiated by camphorquinone

D.Ionic chelation bonding between polyacrylic acid carboxyl groups and hydroxyapatite calcium ions

Explanation: Conventional Glass Ionomer Cement achieves true chemical adhesion to tooth structure via ionic bonding (chelation) between the carboxyl groups (-COOH) of the polyalkenoic acid and the calcium ions (Ca2+) present in the hydroxyapatite of enamel and dentin.

4In a 3-step total-etch (etch-and-rinse) adhesive protocol, 37% phosphoric acid gel is applied to dentin. What is the primary reason dentin etching time should not exceed 15 seconds?

A.Over-etching demineralizes dentin too deeply, creating an unsupported collagen network that the adhesive monomer cannot fully penetrate

B.Over-etching completely dissolves all enamel prisms and prevents micromechanical retention

C.Extended etching produces insoluble fluorapatite crystals that block dentinal tubule lumens

D.Phosphoric acid induces immediate irreversible coagulation necrosis of pulpal sensory C-fibers

Explanation: Dentin etching with 37% phosphoric acid should be restricted to 10-15 seconds. Demineralizing dentin too deeply creates an exposed demineralized collagen zone that resin monomers cannot fully infiltrate, leaving naked collagen fibers vulnerable to matrix metalloproteinase (MMP) enzymatic degradation and nano-leakage.

5Universal adhesives commonly incorporate the functional monomer 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP). What is the primary chemical advantage of 10-MDP in self-etch adhesive systems?

A.It dissolves the smear layer completely without requiring any water solvent

B.It forms stable, insoluble calcium-phosphate nano-layers (nanolayering) on residual hydroxyapatite

C.It functions purely as a photoinitiator that absorbs blue light at 468 nm

D.It polymerizes via cationic ring-opening to eliminate polymerization shrinkage stress

Explanation: 10-MDP possesses a hydrophobic methacrylate group, a long alkyl spacer chain, and a hydrophilic phosphate group that chemically bonds with calcium ions in hydroxyapatite. This interaction produces highly insoluble calcium-salt nano-layers (nanolayering) that resist hydrolysis and provide durable adhesive interfaces.

6A 35-year-old male patient attends a routine dental check-up. Intraoral periapical radiography reveals a well-circumscribed radiolucency surrounding the root apex of tooth 11, which has a large discolored composite restoration. The tooth does not respond to thermal ice testing or electric pulp testing (EPT). Palpation and percussion elicit no pain. What is the most accurate pulpal and periapical diagnosis?

A.Reversible pulpitis with normal apical tissues

B.Symptomatic irreversible pulpitis with acute apical abscess

C.Pulpal necrosis with asymptomatic apical periodontitis

D.Pulp necrosis with chronic apical abscess with sinus tract

Explanation: Negative responses to both thermal and electric pulp testing confirm pulpal necrosis. The presence of an apical radiolucency in the absence of clinical pain on percussion or palpation and without an active sinus tract establishes the periapical diagnosis of asymptomatic apical periodontitis (periodontitis apikalis asimtomatik).

7When preparing the endodontic access cavity for a maxillary first molar (gigi 16), which outline shape should be prepared, and in which direction must the operator explore to locate the second mesiobuccal canal (MB2)?

A.Oval outline oriented bucco-lingually; search directly distal to the distobuccal canal orifice

B.Trapezoidal outline centered on the distal half of the occlusal table; search directly buccal to the palatal canal

C.Circular outline centered at the central pit; search in the middle of the pulp chamber floor

D.Rhomboidal or rounded triangular outline with the base toward the buccal; search 1 to 3 mm palatal to the MB1 canal along the developmental groove

Explanation: The access cavity for the maxillary first molar is rhomboidal or triangular, with the wide base toward the buccal and the apex toward the palatal. The MB2 canal orifice is located palatally and slightly mesially to the main MB1 orifice, along the subpulpal groove running between MB1 and the palatal canal.

8During root canal instrumentation of a mandibular premolar, an electronic apex locator (EAL) is used in conjunction with working length radiographs. What anatomical landmark does a contemporary apex locator primarily detect when displaying the '0.0' or 'Apex' mark?

A.The major apical foramen (foramen apikale) where the canal exits into the periodontal ligament space

B.The radiographic apex visible on an angled periapical radiograph

C.The cementoenamel junction (CEJ)

D.The border between middle and apical thirds of the root

Explanation: Modern multi-frequency electronic apex locators measure impedance differences to detect the transition from the internal root canal system to the conductive periodontal ligament, which precisely corresponds to the major apical foramen. Instrumentation working length is typically established 0.5 to 1.0 mm coronal to this reading at the apical constriction.

9Sodium hypochlorite (NaOCl) in concentrations between 1.0% and 5.25% remains the primary endodontic irrigant in conservative dentistry. Which unique biological property makes NaOCl irreplaceable by chlorhexidine or saline during chemomechanical debridement?

A.Capacity to eliminate the inorganic smear layer by calcium chelation

B.Ability to dissolve both vital and necrotic organic pulp tissue

C.Complete biocompatibility with periapical tissues without cytotoxicity

D.Long-term substantive remineralization of radicular dentin

Explanation: Sodium hypochlorite is the only root canal irrigant that simultaneously possesses potent antimicrobial efficacy and the ability to dissolve organic tissue (both vital pulp remnants and necrotic debris) through saponification and amino acid neutralization reactions.

10Following mechanical root canal preparation, a smear layer comprising organic and inorganic debris covers the dentinal walls. Which chemical agent is specifically applied to chelate calcium ions and remove the inorganic portion of the endodontic smear layer?

A.0.2% Chlorhexidine gluconate

B.5.25% Sodium hypochlorite (NaOCl)

C.17% Ethylenediaminetetraacetic acid (EDTA)

D.3% Hydrogen peroxide (H2O2)

Explanation: 17% EDTA is a polyamino carboxylic acid and chelating agent that reacts with calcium ions in hydroxyapatite crystals, demineralizing dentin surfaces, removing the inorganic portion of the smear layer, and opening dentinal tubules prior to obturation.

About the UKMPPDG Exam

UKMPPDG (formerly known as UKMP2DG) is the mandatory national exit examination for students completing the professional dental curriculum in Indonesia, required for licensure as a general dentist (drg.).

Exam sponsor: Panitia Nasional UKMPPDG / Badan Akreditasi Perguruan Tinggi Kesehatan (BAPT). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The examination evaluates diagnostic, therapeutic, and preventive dental competencies as defined in the Standar Kompetensi Dokter Gigi Indonesia (SKDGI).

Time Limit

Not published in official sources reviewed.

Passing Score

Not published in official sources reviewed.

Exam / Certification Fees

Not published in official sources reviewed.

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.

19 of 95 practice questions

Konservasi Gigi (Operative Dentistry & Endodontics)

Caries diagnostic criteria, adhesive dentistry, resin composites, glass ionomers, vital pulp therapy, endodontic diagnosis, instrumentation, and obturation.

14 of 95 practice questions

Bedah Mulut dan Maksilofasial (Oral & Maxillofacial Surgery)

Local anesthesia techniques, simple and complicated exodontia, impacted mandibular molars, fascial space infections, and acute dental emergencies.

18 of 95 practice questions

Prostodonsia (Prosthodontics)

Removable partial dentures, complete dentures, fixed partial dentures, abutment preparation, impression techniques, and occlusal rehabilitation.

18 of 95 practice questions

Periodonsia & Ilmu Penyakit Mulut (Periodontics & Oral Medicine)

Gingival and periodontal diseases, nonsurgical periodontal therapy, oral mucosal ulcerations, premalignant lesions, and systemic associations.

16 of 95 practice questions

Pedodonsia & Ortodonsia (Pediatric Dentistry & Orthodontics)

Primary dentition management, pediatric pulp therapy, space maintenance, preventive care, malocclusion classification, and orthodontic appliance mechanics.

10 of 95 practice questions

Radiologi Kedokteran Gigi, IKGM & Etika (Radiology, Public Health & Ethics)

Intraoral and extraoral radiography, radiation protection, community dental epidemiology, infection prevention protocols, and healthcare law (UU No. 17/2023).

Preparing for the UKMPPDG Exam

What You Need to Know

Passing score: Not published in official sources reviewed.
Assessment: The examination evaluates diagnostic, therapeutic, and preventive dental competencies as defined in the Standar Kompetensi Dokter Gigi Indonesia (SKDGI).
Time limit: Not published in official sources reviewed.
Exam / certification fees: Not published in official sources reviewed. Official sources

Using Our Practice Resources

Work through all 95 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

UKMPPDG: Suggested Study Strategy

1Review the clinical differences between reversible pulpitis, symptomatic irreversible pulpitis, and pulp necrosis.

2Memorize the anatomical landmarks and injection angles for inferior alveolar nerve blocks and Gow-Gates mandibular blocks.

3Understand the biomechanical principles of removable partial denture design: support, retention, and stability.

4Practice interpreting radiographic lesions of the jaws, distinguishing cyst-like radiolucencies from odontogenic tumors.

Frequently Asked Questions

What is UKMPPDG?

UKMPPDG (previously called UKMP2DG) is the national competency exit examination required for all dental students completing their clinical rotations (koas) in Indonesia to earn the professional dentist degree (drg.) and qualify for registration.

What are the components of the UKMPPDG examination?

The examination consists of two mandatory parts: a computer-based test (CBT) assessing theoretical and clinical decision-making knowledge, and an Objective Structured Clinical Examination (OSCE) evaluating practical clinical skills.

What is the STR validity period under UU No. 17 Tahun 2023?

Under UU No. 17 Tahun 2023, the Dentist Registration Certificate (STR Dokter Gigi) issued by Konsil Kesehatan Indonesia (KKI) is valid for life (seumur hidup). The Surat Izin Praktik (SIP Dokter Gigi) is issued by municipal authorities and valid for 5 years.

Does this practice bank replace the OSCE component?

No. This practice bank is an independent English-language four-option MCQ study aid designed to strengthen clinical reasoning, diagnostic acumen, and theoretical mastery. It does not replace physical, hands-on clinical training or simulate OSCE station performances.