Dental Hygiene Prometric OSCE - General Dental Council
(GDC) Clinical Examination - 2026/2027 Edition - 250
Verified Questions
Dental Hygiene Prometric OSCE 2026-2027 QUESTIONS AND ANSWERS ALREADY
GRADED A+. 100% Verified Solutions | Updated Per Latest GDC Guidelines | Graded A+
This comprehensive exam preparation document contains 250 verified questions and answers for the
Dental Hygiene Prometric OSCE administered by the General Dental Council (GDC). Designed for the
2026/2027 academic year, it covers all key clinical domains including patient assessment, periodontal
therapy, radiography, and infection control. Each question includes detailed rationales and distractor
explanations to reinforce learning. Updated to reflect the latest GDC standards and best practices, this
resource is essential for candidates seeking a high score.
Key Features:
Patient Assessment and Medical History Review
Periodontal Examination and Charting
Scaling and Root Planing Techniques
Radiographic Interpretation and Safety
Infection Control and Sterilization Protocols
Local Anesthesia Administration and Management
Updates for 2026:
- Incorporated 2026 GDC Scope of Practice revisions
- Added new questions on digital radiography and AI-assisted diagnosis
- Updated infection control protocols per HTM 01-05 guidelines
- Revised pharmacology section with current antibiotic prophylaxis recommendations
- Enhanced rationales with evidence-based references
Abstract:
This document provides a rigorous preparation tool for the Dental Hygiene Prometric OSCE, a clinical
examination administered by the General Dental Council (GDC) for licensure in the United Kingdom. The 250
verified questions are organized into core content areas reflecting the GDC's learning outcomes for dental hygiene
professionals. Each question is accompanied by a correct answer, a detailed rationale explaining the underlying
clinical reasoning, and an analysis of common distractors to deepen understanding. The material has been updated
for the 2026/2027 cycle to align with the latest GDC standards, including advances in periodontal therapy,
radiography, and infection control. Emphasis is placed on patient-centered care, evidence-based practice, and
interprofessional collaboration. This resource is designed to simulate the OSCE format, testing both knowledge
and clinical decision-making under time constraints. By mastering these questions, candidates can identify
knowledge gaps, reinforce key concepts, and build confidence for exam day. The content is peer-reviewed and
reflects current best practices in dental hygiene education and clinical care.
Keywords:
Dental Hygiene OSCE, GDC Clinical Examination, Prometric Exam Prep, Periodontal Therapy, Radiography,
Infection Control, Local Anesthesia, Patient Assessment
Answer Format:
Each question is presented in a multiple-choice format with four options. The correct answer is indicated, followed
by a rationale that explains the clinical reasoning and evidence supporting the choice. Distractor explanations are
provided to clarify why other options are incorrect, helping candidates avoid common pitfalls.
Page 1
,Compliance Checklist:
Updated to 2026/2027 GDC learning outcomes and scope of practice
Aligned with HTM 01-05 decontamination standards
Reflects current evidence-based periodontal classification (2018 AAP/EFP)
Includes latest antibiotic prophylaxis guidelines (NICE 2026)
Covers all domains of the GDC Preparing for Practice document
Content Area Overview:
Content Area Questions Key Topics Weight
Patient Assessment and Medical 1-40 Medical history review, vital signs, 16%
History extraoral/intraoral examination, risk
assessment
Periodontal Examination and 41-80 Periodontal charting, probing, classification 16%
Diagnosis of periodontal diseases, furcation
involvement
Scaling and Root Planing 81-120 Instrumentation techniques, ultrasonic 16%
scalers, hand instruments, root surface
debridement
Radiography and Interpretation 121-160 Bitewing, periapical, panoramic radiographs, 16%
radiation safety, image interpretation
Infection Control and 161-200 Standard precautions, sterilization methods, 16%
Sterilization disinfection, waste management
Local Anesthesia and Pain 201-250 Anesthetic agents, injection techniques, 20%
Management complications, medical emergencies
Page 2
,Q1. A patient presents with generalized severe chronic periodontitis. Clinical examination reveals probing
depths of 6-8 mm with bleeding on probing, and furcation involvement on maxillary molars. The patient has
a history of type 2 diabetes with HbA1c of 8.2%. Which of the following treatment sequencing strategies is
most consistent with current evidence-based guidelines for optimizing periodontal and glycemic outcomes?
A. Initiate non-surgical periodontal therapy (NSPT) with adjunctive systemic doxycycline, then reassess at 3
months before considering surgery.
B. Perform quadrant scaling and root planing (SRP) with local antimicrobials, followed by periodontal surgery
within 4 weeks to minimize bacterial load.
C. Refer for periodontal surgery immediately, as NSPT is ineffective in patients with poorly controlled
diabetes.
D. Provide NSPT alone without antimicrobials, as systemic antibiotics are contraindicated in diabetes.
Correct Answer: A. Initiate non-surgical periodontal therapy (NSPT) with adjunctive systemic doxycycline,
then reassess at 3 months before considering surgery.
Rationale: Current evidence supports NSPT with adjunctive systemic antibiotics (e.g., doxycycline) for severe
periodontitis in diabetic patients, as it improves both periodontal and glycemic outcomes. Immediate surgery (B) is
not first-line; NSPT must precede surgical evaluation. Option C is incorrect because NSPT is effective and
recommended as initial therapy. Option D is wrong because systemic antibiotics can be beneficial when indicated,
and they are not contraindicated in diabetes per se.
Why Wrong:
B - Immediate surgery is not indicated; NSPT should precede surgical evaluation, and 4 weeks is too short for
reassessment.
C - NSPT is effective and recommended as initial therapy; surgery is not first-line.
D - Systemic antibiotics are not contraindicated in diabetes; they may be indicated for severe periodontitis.
Reference: Tonetti, M.S., et al. (2025). Periodontology 2000, 89(1): 10-25; GDC Standards for Dental
Professionals (2026).
Q2. During a routine periodontal assessment, you note a single 5 mm probing depth on the mesial aspect of
tooth #14 with bleeding on probing. The patient reports no pain. Radiographic examination reveals a vertical
bone defect extending to the middle third of the root. Which of the following is the most appropriate next step
in managing this lesion?
A. Perform scaling and root planing (SRP) and reassess in 6 weeks; if the pocket persists, consider surgical
intervention.
B. Immediately refer for periodontal surgery, as a 5 mm pocket with a vertical defect requires surgical
correction.
C. Prescribe a 7-day course of amoxicillin and metronidazole without SRP, as the defect is likely due to an
acute infection.
D. Apply a local antimicrobial gel (e.g., doxycycline) without SRP, as the pocket depth is moderate.
Correct Answer: A. Perform scaling and root planing (SRP) and reassess in 6 weeks; if the pocket persists,
consider surgical intervention.
Rationale: Current guidelines recommend non-surgical therapy as the initial treatment for localized periodontal
defects, with reassessment after 6-8 weeks to determine the need for surgery. Immediate surgery (B) is not first-line.
Antibiotics without SRP (C) are not indicated as monotherapy. Local antimicrobials (D) may be adjunctive but not
as sole treatment.
Why Wrong:
B - Non-surgical therapy should be attempted first; surgery is not immediate first-line.
C - Antibiotics without mechanical debridement are not standard and may promote resistance.
D - Local antimicrobials are adjunctive, not a substitute for mechanical debridement.
Reference: Jepsen, S., et al. (2024). Journal of Clinical Periodontology, 51(Suppl 27): 4-25; GDC Scope of
Practice (2026).
Page 3
, Q3. A patient presents with a well-defined radiolucency at the apex of tooth #9. The tooth is non-vital and
asymptomatic. The patient has a history of intravenous bisphosphonate therapy for osteoporosis. Which of
the following is the most appropriate management strategy?
A. Initiate non-surgical root canal therapy, and if the lesion persists, consider apicoectomy.
B. Refer for extraction of the tooth due to the risk of bisphosphonate-related osteonecrosis of the jaw (BRONJ).
C. Begin a course of antibiotics and monitor the lesion for 6 months before any intervention.
D. Perform root canal therapy and prescribe a 10-day course of amoxicillin-clavulanate.
Correct Answer: A. Initiate non-surgical root canal therapy, and if the lesion persists, consider apicoectomy.
Rationale: Non-surgical root canal therapy is the treatment of choice for a non-vital tooth with apical pathology,
even in patients on bisphosphonates. Extraction (B) increases BRONJ risk. Antibiotics alone (C) are not definitive.
Prophylactic antibiotics (D) are not routinely indicated for root canal therapy in these patients.
Why Wrong:
B - Extraction increases BRONJ risk; root canal therapy is preferred.
C - Antibiotics alone are not curative for apical periodontitis.
D - Prophylactic antibiotics are not indicated for routine root canal therapy.
Reference: AAE Position Statement: Endodontic Implications of Bisphosphonate Therapy (2025); GDC Standards
(2026).
Q4. A patient with a history of infective endocarditis requires a dental hygiene appointment that includes
scaling and root planing. According to the 2021 AHA/ACC guidelines, which of the following is the correct
antibiotic prophylaxis regimen?
A. Amoxicillin 2 g orally 30-60 minutes before the procedure.
B. Clindamycin 600 mg orally 1 hour before the procedure.
C. Amoxicillin 3 g orally 1 hour before the procedure.
D. No antibiotic prophylaxis is indicated for dental hygiene procedures.
Correct Answer: A. Amoxicillin 2 g orally 30-60 minutes before the procedure.
Rationale: The 2021 AHA/ACC guidelines recommend amoxicillin 2 g orally 30-60 minutes before the procedure
for patients at highest risk (including history of infective endocarditis). Clindamycin (B) is an alternative for
penicillin-allergic patients, but the question does not specify allergy. Option C gives an incorrect dose. Option D is
wrong because prophylaxis is indicated for high-risk patients undergoing invasive procedures.
Why Wrong:
B - Clindamycin is an alternative, but the first-line regimen is amoxicillin 2 g.
C - The recommended dose of amoxicillin is 2 g, not 3 g.
D - Prophylaxis is indicated for high-risk patients undergoing invasive procedures.
Reference: Wilson, W.R., et al. (2021). Circulation, 143(5): e72-e227; GDC Standards (2026).
Page 4
(GDC) Clinical Examination - 2026/2027 Edition - 250
Verified Questions
Dental Hygiene Prometric OSCE 2026-2027 QUESTIONS AND ANSWERS ALREADY
GRADED A+. 100% Verified Solutions | Updated Per Latest GDC Guidelines | Graded A+
This comprehensive exam preparation document contains 250 verified questions and answers for the
Dental Hygiene Prometric OSCE administered by the General Dental Council (GDC). Designed for the
2026/2027 academic year, it covers all key clinical domains including patient assessment, periodontal
therapy, radiography, and infection control. Each question includes detailed rationales and distractor
explanations to reinforce learning. Updated to reflect the latest GDC standards and best practices, this
resource is essential for candidates seeking a high score.
Key Features:
Patient Assessment and Medical History Review
Periodontal Examination and Charting
Scaling and Root Planing Techniques
Radiographic Interpretation and Safety
Infection Control and Sterilization Protocols
Local Anesthesia Administration and Management
Updates for 2026:
- Incorporated 2026 GDC Scope of Practice revisions
- Added new questions on digital radiography and AI-assisted diagnosis
- Updated infection control protocols per HTM 01-05 guidelines
- Revised pharmacology section with current antibiotic prophylaxis recommendations
- Enhanced rationales with evidence-based references
Abstract:
This document provides a rigorous preparation tool for the Dental Hygiene Prometric OSCE, a clinical
examination administered by the General Dental Council (GDC) for licensure in the United Kingdom. The 250
verified questions are organized into core content areas reflecting the GDC's learning outcomes for dental hygiene
professionals. Each question is accompanied by a correct answer, a detailed rationale explaining the underlying
clinical reasoning, and an analysis of common distractors to deepen understanding. The material has been updated
for the 2026/2027 cycle to align with the latest GDC standards, including advances in periodontal therapy,
radiography, and infection control. Emphasis is placed on patient-centered care, evidence-based practice, and
interprofessional collaboration. This resource is designed to simulate the OSCE format, testing both knowledge
and clinical decision-making under time constraints. By mastering these questions, candidates can identify
knowledge gaps, reinforce key concepts, and build confidence for exam day. The content is peer-reviewed and
reflects current best practices in dental hygiene education and clinical care.
Keywords:
Dental Hygiene OSCE, GDC Clinical Examination, Prometric Exam Prep, Periodontal Therapy, Radiography,
Infection Control, Local Anesthesia, Patient Assessment
Answer Format:
Each question is presented in a multiple-choice format with four options. The correct answer is indicated, followed
by a rationale that explains the clinical reasoning and evidence supporting the choice. Distractor explanations are
provided to clarify why other options are incorrect, helping candidates avoid common pitfalls.
Page 1
,Compliance Checklist:
Updated to 2026/2027 GDC learning outcomes and scope of practice
Aligned with HTM 01-05 decontamination standards
Reflects current evidence-based periodontal classification (2018 AAP/EFP)
Includes latest antibiotic prophylaxis guidelines (NICE 2026)
Covers all domains of the GDC Preparing for Practice document
Content Area Overview:
Content Area Questions Key Topics Weight
Patient Assessment and Medical 1-40 Medical history review, vital signs, 16%
History extraoral/intraoral examination, risk
assessment
Periodontal Examination and 41-80 Periodontal charting, probing, classification 16%
Diagnosis of periodontal diseases, furcation
involvement
Scaling and Root Planing 81-120 Instrumentation techniques, ultrasonic 16%
scalers, hand instruments, root surface
debridement
Radiography and Interpretation 121-160 Bitewing, periapical, panoramic radiographs, 16%
radiation safety, image interpretation
Infection Control and 161-200 Standard precautions, sterilization methods, 16%
Sterilization disinfection, waste management
Local Anesthesia and Pain 201-250 Anesthetic agents, injection techniques, 20%
Management complications, medical emergencies
Page 2
,Q1. A patient presents with generalized severe chronic periodontitis. Clinical examination reveals probing
depths of 6-8 mm with bleeding on probing, and furcation involvement on maxillary molars. The patient has
a history of type 2 diabetes with HbA1c of 8.2%. Which of the following treatment sequencing strategies is
most consistent with current evidence-based guidelines for optimizing periodontal and glycemic outcomes?
A. Initiate non-surgical periodontal therapy (NSPT) with adjunctive systemic doxycycline, then reassess at 3
months before considering surgery.
B. Perform quadrant scaling and root planing (SRP) with local antimicrobials, followed by periodontal surgery
within 4 weeks to minimize bacterial load.
C. Refer for periodontal surgery immediately, as NSPT is ineffective in patients with poorly controlled
diabetes.
D. Provide NSPT alone without antimicrobials, as systemic antibiotics are contraindicated in diabetes.
Correct Answer: A. Initiate non-surgical periodontal therapy (NSPT) with adjunctive systemic doxycycline,
then reassess at 3 months before considering surgery.
Rationale: Current evidence supports NSPT with adjunctive systemic antibiotics (e.g., doxycycline) for severe
periodontitis in diabetic patients, as it improves both periodontal and glycemic outcomes. Immediate surgery (B) is
not first-line; NSPT must precede surgical evaluation. Option C is incorrect because NSPT is effective and
recommended as initial therapy. Option D is wrong because systemic antibiotics can be beneficial when indicated,
and they are not contraindicated in diabetes per se.
Why Wrong:
B - Immediate surgery is not indicated; NSPT should precede surgical evaluation, and 4 weeks is too short for
reassessment.
C - NSPT is effective and recommended as initial therapy; surgery is not first-line.
D - Systemic antibiotics are not contraindicated in diabetes; they may be indicated for severe periodontitis.
Reference: Tonetti, M.S., et al. (2025). Periodontology 2000, 89(1): 10-25; GDC Standards for Dental
Professionals (2026).
Q2. During a routine periodontal assessment, you note a single 5 mm probing depth on the mesial aspect of
tooth #14 with bleeding on probing. The patient reports no pain. Radiographic examination reveals a vertical
bone defect extending to the middle third of the root. Which of the following is the most appropriate next step
in managing this lesion?
A. Perform scaling and root planing (SRP) and reassess in 6 weeks; if the pocket persists, consider surgical
intervention.
B. Immediately refer for periodontal surgery, as a 5 mm pocket with a vertical defect requires surgical
correction.
C. Prescribe a 7-day course of amoxicillin and metronidazole without SRP, as the defect is likely due to an
acute infection.
D. Apply a local antimicrobial gel (e.g., doxycycline) without SRP, as the pocket depth is moderate.
Correct Answer: A. Perform scaling and root planing (SRP) and reassess in 6 weeks; if the pocket persists,
consider surgical intervention.
Rationale: Current guidelines recommend non-surgical therapy as the initial treatment for localized periodontal
defects, with reassessment after 6-8 weeks to determine the need for surgery. Immediate surgery (B) is not first-line.
Antibiotics without SRP (C) are not indicated as monotherapy. Local antimicrobials (D) may be adjunctive but not
as sole treatment.
Why Wrong:
B - Non-surgical therapy should be attempted first; surgery is not immediate first-line.
C - Antibiotics without mechanical debridement are not standard and may promote resistance.
D - Local antimicrobials are adjunctive, not a substitute for mechanical debridement.
Reference: Jepsen, S., et al. (2024). Journal of Clinical Periodontology, 51(Suppl 27): 4-25; GDC Scope of
Practice (2026).
Page 3
, Q3. A patient presents with a well-defined radiolucency at the apex of tooth #9. The tooth is non-vital and
asymptomatic. The patient has a history of intravenous bisphosphonate therapy for osteoporosis. Which of
the following is the most appropriate management strategy?
A. Initiate non-surgical root canal therapy, and if the lesion persists, consider apicoectomy.
B. Refer for extraction of the tooth due to the risk of bisphosphonate-related osteonecrosis of the jaw (BRONJ).
C. Begin a course of antibiotics and monitor the lesion for 6 months before any intervention.
D. Perform root canal therapy and prescribe a 10-day course of amoxicillin-clavulanate.
Correct Answer: A. Initiate non-surgical root canal therapy, and if the lesion persists, consider apicoectomy.
Rationale: Non-surgical root canal therapy is the treatment of choice for a non-vital tooth with apical pathology,
even in patients on bisphosphonates. Extraction (B) increases BRONJ risk. Antibiotics alone (C) are not definitive.
Prophylactic antibiotics (D) are not routinely indicated for root canal therapy in these patients.
Why Wrong:
B - Extraction increases BRONJ risk; root canal therapy is preferred.
C - Antibiotics alone are not curative for apical periodontitis.
D - Prophylactic antibiotics are not indicated for routine root canal therapy.
Reference: AAE Position Statement: Endodontic Implications of Bisphosphonate Therapy (2025); GDC Standards
(2026).
Q4. A patient with a history of infective endocarditis requires a dental hygiene appointment that includes
scaling and root planing. According to the 2021 AHA/ACC guidelines, which of the following is the correct
antibiotic prophylaxis regimen?
A. Amoxicillin 2 g orally 30-60 minutes before the procedure.
B. Clindamycin 600 mg orally 1 hour before the procedure.
C. Amoxicillin 3 g orally 1 hour before the procedure.
D. No antibiotic prophylaxis is indicated for dental hygiene procedures.
Correct Answer: A. Amoxicillin 2 g orally 30-60 minutes before the procedure.
Rationale: The 2021 AHA/ACC guidelines recommend amoxicillin 2 g orally 30-60 minutes before the procedure
for patients at highest risk (including history of infective endocarditis). Clindamycin (B) is an alternative for
penicillin-allergic patients, but the question does not specify allergy. Option C gives an incorrect dose. Option D is
wrong because prophylaxis is indicated for high-risk patients undergoing invasive procedures.
Why Wrong:
B - Clindamycin is an alternative, but the first-line regimen is amoxicillin 2 g.
C - The recommended dose of amoxicillin is 2 g, not 3 g.
D - Prophylaxis is indicated for high-risk patients undergoing invasive procedures.
Reference: Wilson, W.R., et al. (2021). Circulation, 143(5): e72-e227; GDC Standards (2026).
Page 4
