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TCDHA Periodontics Practice Exam quesions “ Newest
Updated Exam 2026 Solved Questions & Answers
Verified 100% Graded A+ (Latest Version)
Which of the following species is frequently detected in aggressive forms of
periodontitis?
Select one:
A. A. odontolyticus
B. A. actinomycetemcomitans
C. Porphyromonas gingivalis
D. Both B and C
D. Both B and C
Which of the following statements about disease progression is FALSE?
Select one:
A. As disease progresses, the number of bacteria in a site increases
B. As disease progresses, the bacteria population becomes more gram-
negative
C. As disease progresses, bacteria become more motile
D. As disease progresses, the bacteria associated with health completely
disappear
D. As disease progresses, the bacteria associated with health completely disappear
Which of the following statements best describes bacterial blooms?
Select one:
A. Bacterial bloom is a period in which specific bacterial species grow at rapid
rates
B. Bacterial bloom occurs when bacteria grow away from the tooth
C. Bacterial bloom is a rapid growth of biofilm by the addition of new bacteria
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D. Bacterial bloom has central rod-shaped bacterium surrounded by round
cocci
A. Bacterial bloom is a period in which specific bacterial species grow at rapid rates
Within minutes of a professional prophylaxis, the pellicle attaches to tooth
surfaces. Within hours of the pellicle formation, bacteria begin to attach to the
outer surface.
Select one:
A. The first statement is true; the second is false
B. Both statements are false
C. Both statements are true
D. The first statement is false; the second is true
C. Both statements are true
Your friend May wears contact lenses. In the last few months, May has had one
eye infection after another. You notice that May does not clean her lens case
daily. What might be causing May's eye infections?
Select one:
A. May is not washing her hands before inserting the lenses in her eyes
B. A bacterial biofilm might have developed in May's lens case
C. May be susceptible to innocuous bacteria
D. May is rubbing her eyes due to allergies
B. A bacterial biofilm might have developed in May's lens case
A patient has undergone repeated, appropriate periodontal therapy over the
past 5 years. Today, the hygienist notes additional attachment loss at several
sites. The patient practices satisfactory self-care and follows the
recommended program of periodontal maintenance visits. Which of the
following is the most likely disease classification for this patient?
Select one:
A. Refractory periodontitis
B. Periodontitis
C. Redundant periodontitis
D. Recurrent periodontitis
A
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Your patient has had infrequent visits to the dentist. A periodontal assessment
shows the following:
• Plaque biofilm that is consistent with the amount of inflammation
• Swelling and redness of the gingiva
• Bleeding on probing
• Generalized loss of attachment.
Which of the following is the most likely disease classification for this patient?
Select one:
A. Refractory periodontitis
B. Periodontitis
C. Nonplaque-induced gingival disease
D. Plaque-induced gingivitis
B
The most frequently occurring form of periodontitis is:
Select one:
A. Periodontitis as a manifestation of systemic disease
B. Gingivitis associated with dental plaque only
C. Periodontitis
D. Necrotizing periodontal diseases
C
A 50-year old patient presents with 1 mm of attachment loss in most of the
mouth, however there is 6 mm of attachment loss present on the proximal
surfaces of the maxillary first and second molars. Which of the following is the
most likely disease classification for this patient?
Select one:
A. Localized periodontitis
B. Refractory periodontitis
C. Redundant periodontitis
D. Recurrent periodontitis
A
Refractory periodontitis occurs despite good self-care and appropriate therapy
and regular maintenance visits. Recurrent periodontitis occurs because the
patient did not control the bacterial plaque biofilm and/or the periodontal
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disease was not adequately treated.
Select one:
A. The first statement is true; the second is false
B. Both statements are false
C. The first statement is false; the second is true
D. Both statements are true
D
All of the following are true of periodontitis, EXCEPT:
Select one:
A. Host response plays an important role in pathogenesis
B. The disease always progresses at a rapid rate
C. Gingival bleeding is a common clinical finding
D. Signs may include periodontal pockets and tooth mobility
B
Three months ago, a patient with periodontitis was seen for a maintenance
visit. Today, he returns for another maintenance visit and the hygienist notes
that there is no additional attachment loss in most areas of the mouth. The one
exception is a 2 mm increase in clinical attachment loss on the distal proximal
surface of tooth #20. The area on tooth #20 is described as:
Select one:
A. Recurrent disease
B. Refractory disease
C. Generalized disease
D. Site-specific disease
D
In Stage II Grade B periodontitis, the gingival tissue may appear bright red or
purplish. The clinical appearance of the tissues is not a reliable indicator of the
presence or severity of chronic periodontitis.
Select one:
A. Both statements are false
B. The first statement is true; the second is false
C. Both statements are true
D. The first statement is false; the second is true
TCDHA Periodontics Practice Exam quesions “ Newest
Updated Exam 2026 Solved Questions & Answers
Verified 100% Graded A+ (Latest Version)
Which of the following species is frequently detected in aggressive forms of
periodontitis?
Select one:
A. A. odontolyticus
B. A. actinomycetemcomitans
C. Porphyromonas gingivalis
D. Both B and C
D. Both B and C
Which of the following statements about disease progression is FALSE?
Select one:
A. As disease progresses, the number of bacteria in a site increases
B. As disease progresses, the bacteria population becomes more gram-
negative
C. As disease progresses, bacteria become more motile
D. As disease progresses, the bacteria associated with health completely
disappear
D. As disease progresses, the bacteria associated with health completely disappear
Which of the following statements best describes bacterial blooms?
Select one:
A. Bacterial bloom is a period in which specific bacterial species grow at rapid
rates
B. Bacterial bloom occurs when bacteria grow away from the tooth
C. Bacterial bloom is a rapid growth of biofilm by the addition of new bacteria
, Page 2 of 52
D. Bacterial bloom has central rod-shaped bacterium surrounded by round
cocci
A. Bacterial bloom is a period in which specific bacterial species grow at rapid rates
Within minutes of a professional prophylaxis, the pellicle attaches to tooth
surfaces. Within hours of the pellicle formation, bacteria begin to attach to the
outer surface.
Select one:
A. The first statement is true; the second is false
B. Both statements are false
C. Both statements are true
D. The first statement is false; the second is true
C. Both statements are true
Your friend May wears contact lenses. In the last few months, May has had one
eye infection after another. You notice that May does not clean her lens case
daily. What might be causing May's eye infections?
Select one:
A. May is not washing her hands before inserting the lenses in her eyes
B. A bacterial biofilm might have developed in May's lens case
C. May be susceptible to innocuous bacteria
D. May is rubbing her eyes due to allergies
B. A bacterial biofilm might have developed in May's lens case
A patient has undergone repeated, appropriate periodontal therapy over the
past 5 years. Today, the hygienist notes additional attachment loss at several
sites. The patient practices satisfactory self-care and follows the
recommended program of periodontal maintenance visits. Which of the
following is the most likely disease classification for this patient?
Select one:
A. Refractory periodontitis
B. Periodontitis
C. Redundant periodontitis
D. Recurrent periodontitis
A
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Your patient has had infrequent visits to the dentist. A periodontal assessment
shows the following:
• Plaque biofilm that is consistent with the amount of inflammation
• Swelling and redness of the gingiva
• Bleeding on probing
• Generalized loss of attachment.
Which of the following is the most likely disease classification for this patient?
Select one:
A. Refractory periodontitis
B. Periodontitis
C. Nonplaque-induced gingival disease
D. Plaque-induced gingivitis
B
The most frequently occurring form of periodontitis is:
Select one:
A. Periodontitis as a manifestation of systemic disease
B. Gingivitis associated with dental plaque only
C. Periodontitis
D. Necrotizing periodontal diseases
C
A 50-year old patient presents with 1 mm of attachment loss in most of the
mouth, however there is 6 mm of attachment loss present on the proximal
surfaces of the maxillary first and second molars. Which of the following is the
most likely disease classification for this patient?
Select one:
A. Localized periodontitis
B. Refractory periodontitis
C. Redundant periodontitis
D. Recurrent periodontitis
A
Refractory periodontitis occurs despite good self-care and appropriate therapy
and regular maintenance visits. Recurrent periodontitis occurs because the
patient did not control the bacterial plaque biofilm and/or the periodontal
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disease was not adequately treated.
Select one:
A. The first statement is true; the second is false
B. Both statements are false
C. The first statement is false; the second is true
D. Both statements are true
D
All of the following are true of periodontitis, EXCEPT:
Select one:
A. Host response plays an important role in pathogenesis
B. The disease always progresses at a rapid rate
C. Gingival bleeding is a common clinical finding
D. Signs may include periodontal pockets and tooth mobility
B
Three months ago, a patient with periodontitis was seen for a maintenance
visit. Today, he returns for another maintenance visit and the hygienist notes
that there is no additional attachment loss in most areas of the mouth. The one
exception is a 2 mm increase in clinical attachment loss on the distal proximal
surface of tooth #20. The area on tooth #20 is described as:
Select one:
A. Recurrent disease
B. Refractory disease
C. Generalized disease
D. Site-specific disease
D
In Stage II Grade B periodontitis, the gingival tissue may appear bright red or
purplish. The clinical appearance of the tissues is not a reliable indicator of the
presence or severity of chronic periodontitis.
Select one:
A. Both statements are false
B. The first statement is true; the second is false
C. Both statements are true
D. The first statement is false; the second is true
