, NBDHE ACTUAL EXAM - JOINT COMMISSION ON NATIONAL
DENTAL EXAMINATIONS (JCNDE) - 2026/2027 ACADEMIC YEAR
- VERIFIED QUESTIONS AND ANSWERS FOR DENTAL HYGIENE
CANDIDATES
180 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
NBDHE ACTUAL EXAM - JOINT COMMISSION ON NATIONAL DENTAL EXAMINATIONS (JCNDE) - 2026/2027
ACADEMIC YEAR - VERIFIED QUESTIONS AND ANSWERS FOR DENTAL HYGIENE CANDIDATES. It
contains 180 carefully selected questions that reflect the most current exam content and testing strategies. Each
question is accompanied by a correct answer and a detailed rationale that explains the underlying
pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 180 Questions
Foundations - Application - Nbdhe Actual Joint Commission ON National Dental Examinations Jcnde
2026/2027 Academic YEAR AND FOR Dental Hygiene Candidates Dental Hygiene Graduate
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Nbdhe Actual Joint 1-30 Dental, Hygienist, Appropriate, Scaling, Likely
Commission ON National
Dental Examinations Jcnde
2026/2027 Academic YEAR
AND FOR Dental Hygiene
Candidates Dental Hygiene
Graduate
Hygienist 31-60 Dental, Appropriate, History, Likely, Patient S
Appropriate 61-90 Dental, Hygienist, Likely, History, Gingival
History 91-120 Dental, Appropriate, Hygienist, Critical, Primary
Likely 121-150 Dental, Hygienist, History, Appropriate, Gingival
Probing 151-180 Dental, Hygienist, Appropriate, History, Caries
TOTAL 180 All questions include answers and detailed rationales
, Section A - Nbdhe Actual Joint Commission ON National
Dental Examinations Jcnde 2026/2027 Academic YEAR AND
FOR Dental Hygiene Candidates Dental Hygiene Graduate
Q1.
A patient with a history of infective endocarditis presents for scaling and root planing.
Current American Heart Association guidelines recommend antibiotic prophylaxis for
which procedure?
A. Routine dental prophylaxis in a patient B. Scaling and root planing in a patient with
with a prosthetic joint a history of infective endocarditis
C. Local anesthesia injection through D. Placement of a rubber dam
non-infected tissue
Correct: B - Scaling and root planing in a patient with a history of infective endocarditis
Rationale:AHA guidelines recommend prophylaxis for procedures that manipulate gingival
tissue or the periapical region, including scaling and root planing, in patients with a history of
infective endocarditis. Routine prophylaxis for prosthetic joints is no longer recommended.
Local anesthesia through non-infected tissue and rubber dam placement are not indications.
Q2.
In the progression of periodontal disease, which cytokine is primarily responsible for
osteoclast activation and alveolar bone resorption?
A. Interleukin-10 (IL-10) B. Interleukin-1 beta (IL-1)
C. Transforming growth factor-beta (TGF-) D. Interferon-gamma (IFN-)
Correct: B - Interleukin-1 beta (IL-1)
Rationale:IL-1² is a pro-inflammatory cytokine that stimulates RANKL expression, leading to
osteoclast activation and bone resorption. IL-10 and TGF- are anti-inflammatory, and IFN- has
complex effects but is not the primary driver of bone loss in periodontitis.
Q3.
Which local delivery agent used as an adjunct to scaling and root planing is a matrix
metalloproteinase inhibitor that reduces collagen breakdown in periodontal tissues?
A. Doxycycline hyclate (10% gel) B. Chlorhexidine chip (2.5 mg)
C. Minocycline microspheres (1 mg) D. Metronidazole gel (25%)
Correct: A - Doxycycline hyclate (10% gel)
Page 3
DENTAL EXAMINATIONS (JCNDE) - 2026/2027 ACADEMIC YEAR
- VERIFIED QUESTIONS AND ANSWERS FOR DENTAL HYGIENE
CANDIDATES
180 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
NBDHE ACTUAL EXAM - JOINT COMMISSION ON NATIONAL DENTAL EXAMINATIONS (JCNDE) - 2026/2027
ACADEMIC YEAR - VERIFIED QUESTIONS AND ANSWERS FOR DENTAL HYGIENE CANDIDATES. It
contains 180 carefully selected questions that reflect the most current exam content and testing strategies. Each
question is accompanied by a correct answer and a detailed rationale that explains the underlying
pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 180 Questions
Foundations - Application - Nbdhe Actual Joint Commission ON National Dental Examinations Jcnde
2026/2027 Academic YEAR AND FOR Dental Hygiene Candidates Dental Hygiene Graduate
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Nbdhe Actual Joint 1-30 Dental, Hygienist, Appropriate, Scaling, Likely
Commission ON National
Dental Examinations Jcnde
2026/2027 Academic YEAR
AND FOR Dental Hygiene
Candidates Dental Hygiene
Graduate
Hygienist 31-60 Dental, Appropriate, History, Likely, Patient S
Appropriate 61-90 Dental, Hygienist, Likely, History, Gingival
History 91-120 Dental, Appropriate, Hygienist, Critical, Primary
Likely 121-150 Dental, Hygienist, History, Appropriate, Gingival
Probing 151-180 Dental, Hygienist, Appropriate, History, Caries
TOTAL 180 All questions include answers and detailed rationales
, Section A - Nbdhe Actual Joint Commission ON National
Dental Examinations Jcnde 2026/2027 Academic YEAR AND
FOR Dental Hygiene Candidates Dental Hygiene Graduate
Q1.
A patient with a history of infective endocarditis presents for scaling and root planing.
Current American Heart Association guidelines recommend antibiotic prophylaxis for
which procedure?
A. Routine dental prophylaxis in a patient B. Scaling and root planing in a patient with
with a prosthetic joint a history of infective endocarditis
C. Local anesthesia injection through D. Placement of a rubber dam
non-infected tissue
Correct: B - Scaling and root planing in a patient with a history of infective endocarditis
Rationale:AHA guidelines recommend prophylaxis for procedures that manipulate gingival
tissue or the periapical region, including scaling and root planing, in patients with a history of
infective endocarditis. Routine prophylaxis for prosthetic joints is no longer recommended.
Local anesthesia through non-infected tissue and rubber dam placement are not indications.
Q2.
In the progression of periodontal disease, which cytokine is primarily responsible for
osteoclast activation and alveolar bone resorption?
A. Interleukin-10 (IL-10) B. Interleukin-1 beta (IL-1)
C. Transforming growth factor-beta (TGF-) D. Interferon-gamma (IFN-)
Correct: B - Interleukin-1 beta (IL-1)
Rationale:IL-1² is a pro-inflammatory cytokine that stimulates RANKL expression, leading to
osteoclast activation and bone resorption. IL-10 and TGF- are anti-inflammatory, and IFN- has
complex effects but is not the primary driver of bone loss in periodontitis.
Q3.
Which local delivery agent used as an adjunct to scaling and root planing is a matrix
metalloproteinase inhibitor that reduces collagen breakdown in periodontal tissues?
A. Doxycycline hyclate (10% gel) B. Chlorhexidine chip (2.5 mg)
C. Minocycline microspheres (1 mg) D. Metronidazole gel (25%)
Correct: A - Doxycycline hyclate (10% gel)
Page 3
