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100+ Free SDLE (SPLE Dentist) Practice Questions

Pass your Saudi Dental Licensure Examination (SDLE / SPLE - Dentist) (CBT via Prometric) exam on the first try — instant access, no signup required.

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A patient requesting anterior diastema closure on teeth 11 and 21 with composite asks about longevity. Which is the most important factor influencing the success and color stability of the bonded composite?

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Sample SDLE (SPLE Dentist) Practice Questions

Try these sample questions to test your SDLE (SPLE Dentist) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 28-year-old patient needs a Class II composite restoration on tooth 36 (FDI). Which property of the matrix system most directly determines whether a tight proximal contact will be achieved?
A.The shade of the matrix band
B.The separation force applied by the sectional matrix ring
C.The brand of bonding agent used
D.The viscosity of the etchant
Explanation: A sectional matrix used with a separating ring physically wedges the teeth apart, compensating for the band thickness and producing a tight, anatomic proximal contact. The ring's separation force is the key variable for contact quality in posterior composites.
2When etching enamel with 37% phosphoric acid prior to a composite restoration, what is the primary mechanism that creates micromechanical retention?
A.Dissolution of enamel rods creating a microporous surface for resin tags
B.Chemical bonding to calcium ions
C.Formation of a smear layer
D.Precipitation of fluorapatite crystals
Explanation: Phosphoric acid selectively dissolves the enamel prism cores and peripheries, producing a frosty, microporous surface. Unfilled resin flows into these microporosities and polymerizes to form resin tags, providing micromechanical retention.
3A general dentist places an amalgam restoration. To minimize marginal breakdown, what is the recommended cavosurface margin angle for an amalgam preparation?
A.Approximately 45 degrees (bevelled)
B.Approximately 90 degrees (butt joint)
C.Approximately 135 degrees (chamfer)
D.An undefined feather edge
Explanation: Amalgam is brittle in thin sections, so the cavosurface margin should approach 90 degrees (a butt joint) to provide bulk and avoid thin amalgam at the margin. Bevelling the enamel margin would create thin amalgam that fractures.
4A patient reports post-operative sensitivity to cold immediately after a deep posterior composite restoration that resolves quickly. The most likely cause is:
A.Irreversible pulpitis requiring root canal treatment
B.Galvanic current from adjacent metal
C.Polymerization shrinkage stress and microleakage
D.Cracked tooth syndrome
Explanation: Brief, quickly resolving cold sensitivity after a deep composite is typically caused by polymerization shrinkage stress, gap formation, and fluid movement within dentinal tubules (hydrodynamic theory). It usually settles over a few weeks as the pulp adapts.
5Which dental material chemically bonds to tooth structure and releases fluoride, making it useful for high-caries-risk patients and as a base under restorations?
A.Glass ionomer cement (GIC)
B.Microfilled composite resin
C.Zinc phosphate cement
D.Polycarboxylate provisional cement
Explanation: Glass ionomer cement chemically bonds to enamel and dentin via ionic interaction with calcium and releases fluoride over time, providing anticariogenic benefit. This makes it valuable for high-caries-risk patients, ART, and as a base/liner.
6A patient is to receive a full-coverage all-ceramic crown on tooth 21 (FDI). Which marginal finish line is most appropriate to provide adequate ceramic bulk and a definite seat?
A.Feather edge
B.Knife-edge margin
C.Chamfer or rounded shoulder
D.Bevelled metal collar
Explanation: All-ceramic crowns require a chamfer or rounded (heavy) shoulder margin of about 1 mm to provide adequate bulk of porcelain, resist fracture, and create a definite, readable finish line for the laboratory.
7During fabrication of a complete denture, the patient's vertical dimension of occlusion (VDO) is set too high. Which clinical sign would you most expect?
A.Excessive freeway space and cheek biting
B.Drooping commissures and angular cheilitis
C.Deepened nasolabial folds
D.Clicking of teeth during speech and strained facial appearance
Explanation: An excessive VDO reduces freeway space, so the teeth click together during speech and the patient looks strained with the lips difficult to close, often with soreness and trauma to the supporting tissues. This is corrected by re-establishing adequate interocclusal rest space.
8A 3-unit fixed partial denture is planned to replace tooth 15 (FDI), using 14 and 16 as abutments. According to Ante's law, the prognosis is most favorable when:
A.The root surface area of the abutments equals or exceeds that of the teeth being replaced
B.The pontic is made of metal only
C.The abutments are vital and non-restored
D.The edentulous span is at least three teeth wide
Explanation: Ante's law states that the combined root surface area (periodontal support) of the abutment teeth should be equal to or greater than that of the teeth being replaced. Adequate abutment support resists occlusal forces and improves the prognosis of the fixed partial denture.
9A removable partial denture is being designed for a Kennedy Class I mandibular arch (bilateral distal extension). Which type of direct retainer is most appropriate to reduce torque on the abutment during function?
A.A rigid circumferential (Akers) clasp engaging a distal undercut
B.A ring clasp on the most posterior abutment
C.A wrought-wire clasp engaging a mesial undercut on the canine only
D.An RPI system (mesial rest, distal guiding plate, I-bar)
Explanation: In distal-extension RPDs, the RPI system (mesial rest, distal proximal plate, and I-bar) allows the denture base to rotate and disengage the abutment under load, minimizing torquing forces. This stress-releasing design protects the periodontally vulnerable terminal abutment.
10Which impression material is an elastomer that offers the highest dimensional accuracy and tear resistance and is preferred for fixed prosthodontic crown and bridge impressions?
A.Polyvinyl siloxane (addition silicone)
B.Irreversible hydrocolloid (alginate)
C.Zinc oxide eugenol
D.Reversible hydrocolloid (agar)
Explanation: Polyvinyl siloxane (addition silicone) provides excellent dimensional stability, high tear strength, and detail reproduction, making it a material of choice for crown and bridge impressions. Its addition-curing reaction releases no by-products, preserving accuracy.

About the SDLE (SPLE Dentist) Exam

The Saudi Dental Licensure Examination (SDLE) is the SCFHS computer-based exam, delivered via Prometric, required to practice dentistry or enter postgraduate training in Saudi Arabia. The current format is 200 scored MCQs in two 100-question parts over 4 hours 30 minutes, with a passing score of 542 on a 200-800 scale.

Assessment

Computer-based MCQ exam in two parts of 100 questions each (one best answer from four options); may include up to 10% pilot questions.

Time Limit

4 hours 30 minutes total (two 120-minute blocks with a 30-minute break)

Passing Score

542 on a 200-800 scaled score (SCFHS standard-set; approximately 68% per published applicant guidance)

Exam Fee

Approximately 900 SAR (confirm the current fee on the SCFHS/Mumaris Plus portal at application) (Saudi Commission for Health Specialties (SCFHS))

SDLE (SPLE Dentist) Exam Content Outline

40%

Restorative Dentistry (Operative & Prosthodontics)

Operative dentistry, dental materials, fixed and removable prosthodontics, occlusion, implant restorations and esthetic care.

18%

Periodontics

Diagnosis and classification of periodontal diseases, etiology and risk factors, non-surgical/surgical therapy, peri-implant disease and basic implant dentistry.

17%

Endodontics

Pulpal/periapical diagnosis, treatment planning, root canal anatomy, irrigation and obturation, endodontic emergencies, mishaps and dental trauma.

15%

Oral Medicine / Oral Surgery

Oral mucosal and bone pathology, medically compromised patients, exodontia and impacted teeth, local anesthesia, odontogenic infections and medical emergencies.

10%

Orthodontics / Pediatric Dentistry

Malocclusion classification, biology of tooth movement, interceptive orthodontics, behavior guidance, pediatric pulp therapy and caries prevention.

How to Pass the SDLE (SPLE Dentist) Exam

What You Need to Know

  • Passing score: 542 on a 200-800 scaled score (SCFHS standard-set; approximately 68% per published applicant guidance)
  • Assessment: Computer-based MCQ exam in two parts of 100 questions each (one best answer from four options); may include up to 10% pilot questions.
  • Time limit: 4 hours 30 minutes total (two 120-minute blocks with a 30-minute break)
  • Exam fee: Approximately 900 SAR (confirm the current fee on the SCFHS/Mumaris Plus portal at application)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

SDLE (SPLE Dentist) Study Tips from Top Performers

1Prioritize Restorative Dentistry: with 40% of the blueprint, mastering operative dentistry, prosthodontics, occlusion and dental materials yields the biggest score gains.
2Use the FDI two-digit tooth numbering system throughout your study, since SDLE questions are written using FDI notation.
3Practice clinical vignettes that test interpretation and decision-making (diagnosis, management, materials and complications), not just recall, to match the SDLE question style.

Frequently Asked Questions

How many questions are on the SDLE and how long is it?

The current SDLE consists of 200 scored multiple-choice questions delivered in two parts of 100 questions each, with a total testing time of 4 hours 30 minutes (two 120-minute blocks and a 30-minute break). The exam may also include up to 10% pilot questions that do not count toward your score.

What is the passing score for the SDLE?

SCFHS set the passing score at 542 on a 200-800 reporting scale through a formal standard-setting exercise approved by the Central Assessment Committee. Published applicant guidance equates this to answering roughly 68% of questions correctly.

Who administers the SDLE and where is it taken?

The exam is owned by the Saudi Commission for Health Specialties (SCFHS) and delivered as a computer-based test through Prometric at SCFHS-approved testing centers in Saudi Arabia and select international locations. Candidates apply through the SCFHS Mumaris Plus portal and then schedule via Prometric.

What topics carry the most weight on the SDLE?

Restorative Dentistry (operative and prosthodontics) is the largest section at about 40%, followed by Periodontics (18%), Endodontics (17%), Oral Medicine/Oral Surgery (15%) and Orthodontics/Pediatric Dentistry (10%). Local anesthesia, professionalism/bioethics and infection control are common themes across all sections.