HOSA Dental Science Review | Latest Update 2026/2027 |
200 Questions & Verified Answers | Complete Exam Prep | A+
Guide
1. Who is credited with inventing the dental chair?
A. Pierre Fauchard
B. Wilhelm Conrad Roentgen
C. Josiah Flagg
D. Lucy Beeman Hobbs
Answer: C. Josiah Flagg. Josiah Flagg is credited with inventing the dental chair, a significant
advancement in dental practice.
2. Who discovered Xrays?
A. Pierre Fauchard
B. Josiah Flagg
C. Wilhelm Conrad Roentgen
D. Lucy Beeman Hobbs
Answer: C. Wilhelm Conrad Roentgen. Roentgen discovered Xrays in 1895, revolutionizing medical and
dental diagnostics.
3. Who is referred to as the "founder of dentistry"?
A. Josiah Flagg
B. Wilhelm Conrad Roentgen
,C. Pierre Fauchard
D. Lucy Beeman Hobbs
Answer: C. Pierre Fauchard. Fauchard perfected several dental treatments still used today and
developed stepbystep procedures for dental treatments.
4. Who was the first woman to graduate from dental school?
A. Lucy Beeman Hobbs
B. Pierre Fauchard
C. Josiah Flagg
D. Wilhelm Conrad Roentgen
Answer: A. Lucy Beeman Hobbs. She graduated from the Ohio College of Dental Surgery in 1866.
5. Which dental specialty is concerned with diagnosing and treating diseases of the supporting and
surrounding tissues of the tooth?
A. Endodontics
B. Periodontics
C. Orthodontics
D. Prosthodontics
Answer: B. Periodontics. Periodontics focuses on the gums and supporting structures (periodontium).
,6. Which dental specialty is concerned with the pathology and morphology of the dental pulp and
surrounding tissues?
A. Periodontics
B. Orthodontics
C. Endodontics
D. Prosthodontics
Answer: C. Endodontics. Endodontics deals with the dental pulp and root canal therapy.
7. What are the three channels of communication?
A. Verbal, written, and visual
B. Auditory, visual, and kinesthetic
C. Auditory, verbal, and tactile
D. Visual, written, and kinesthetic
Answer: B. Auditory, visual, and kinesthetic. Auditory involves hearing/listening, visual involves
observing/seeing, and kinesthetic involves caring touch.
8. What is one of the most observed and critical components of nonverbal communication?
A. Tone of voice
B. Facial expression
C. Posture
D. Gestures
Answer: B. Facial expression. Facial expressions are key indicators of emotions and reactions in
communication.
, 9. What is ethical behavior?
A. Following all laws and regulations
B. The ability to distinguish right from wrong
C. Being polite to patients
D. Maintaining patient confidentiality
Answer: B. The ability to distinguish right from wrong. Ethical behavior involves making decisions based
on moral principles.
10. What is the sticky mass that grows on teeth and contains bacteria?
A. Tartar
B. Plaque
C. Calculus
D. Biofilm
Answer: B. Plaque. Plaque is a sticky, colorless film of bacteria that constantly forms on teeth.
11. What motion should you use while flossing between two teeth?
A. Upanddown motion
B. Circular motion
C. Sawing motion
D. Sidetoside motion
200 Questions & Verified Answers | Complete Exam Prep | A+
Guide
1. Who is credited with inventing the dental chair?
A. Pierre Fauchard
B. Wilhelm Conrad Roentgen
C. Josiah Flagg
D. Lucy Beeman Hobbs
Answer: C. Josiah Flagg. Josiah Flagg is credited with inventing the dental chair, a significant
advancement in dental practice.
2. Who discovered Xrays?
A. Pierre Fauchard
B. Josiah Flagg
C. Wilhelm Conrad Roentgen
D. Lucy Beeman Hobbs
Answer: C. Wilhelm Conrad Roentgen. Roentgen discovered Xrays in 1895, revolutionizing medical and
dental diagnostics.
3. Who is referred to as the "founder of dentistry"?
A. Josiah Flagg
B. Wilhelm Conrad Roentgen
,C. Pierre Fauchard
D. Lucy Beeman Hobbs
Answer: C. Pierre Fauchard. Fauchard perfected several dental treatments still used today and
developed stepbystep procedures for dental treatments.
4. Who was the first woman to graduate from dental school?
A. Lucy Beeman Hobbs
B. Pierre Fauchard
C. Josiah Flagg
D. Wilhelm Conrad Roentgen
Answer: A. Lucy Beeman Hobbs. She graduated from the Ohio College of Dental Surgery in 1866.
5. Which dental specialty is concerned with diagnosing and treating diseases of the supporting and
surrounding tissues of the tooth?
A. Endodontics
B. Periodontics
C. Orthodontics
D. Prosthodontics
Answer: B. Periodontics. Periodontics focuses on the gums and supporting structures (periodontium).
,6. Which dental specialty is concerned with the pathology and morphology of the dental pulp and
surrounding tissues?
A. Periodontics
B. Orthodontics
C. Endodontics
D. Prosthodontics
Answer: C. Endodontics. Endodontics deals with the dental pulp and root canal therapy.
7. What are the three channels of communication?
A. Verbal, written, and visual
B. Auditory, visual, and kinesthetic
C. Auditory, verbal, and tactile
D. Visual, written, and kinesthetic
Answer: B. Auditory, visual, and kinesthetic. Auditory involves hearing/listening, visual involves
observing/seeing, and kinesthetic involves caring touch.
8. What is one of the most observed and critical components of nonverbal communication?
A. Tone of voice
B. Facial expression
C. Posture
D. Gestures
Answer: B. Facial expression. Facial expressions are key indicators of emotions and reactions in
communication.
, 9. What is ethical behavior?
A. Following all laws and regulations
B. The ability to distinguish right from wrong
C. Being polite to patients
D. Maintaining patient confidentiality
Answer: B. The ability to distinguish right from wrong. Ethical behavior involves making decisions based
on moral principles.
10. What is the sticky mass that grows on teeth and contains bacteria?
A. Tartar
B. Plaque
C. Calculus
D. Biofilm
Answer: B. Plaque. Plaque is a sticky, colorless film of bacteria that constantly forms on teeth.
11. What motion should you use while flossing between two teeth?
A. Upanddown motion
B. Circular motion
C. Sawing motion
D. Sidetoside motion
