©THEBRIGHTSTARS 2024
ODP Exam 1 Questions With Revised
Answers
What is the use of phase-contrast microscopy in professional intervention? - answer✔✔Initially
assess periodontal disease activity, evaluate the success of therapy, allow the patient to become
personally involved through visualization of microflora, predict which patients and which
intraoral sites are most likely to suffer periodontal destruction.
Cocci are shaped like? - answer✔✔Spherical forms
What are the 3 groups of Cocci cell shapes and example of each. - answer✔✔Pairs-
Streptococcus pneumoniae
Chains- Streptococci
Clusters- Staphylococcus
Bacilli is shaped like? Give example - answer✔✔Rod-shape
example; Lactobacilli
What are the 3 spiral forms and give example of each - answer✔✔Curved rods- Vibrios
Rigid spirals- Spirillum
Flexible spirals- Spirochetes
What bacteria cell is the most prevalent form in the oral cavity? - answer✔✔Streptococcus
group, members of the viridans group
What are some examples of the prevalent bacteria cells in the oral cavity? - answer✔✔S. sanguis
S. mutans
S. mitis
S. salivarius
What are the etiologic factors in dental caries? - answer✔✔Streptococcus mutans
, ©THEBRIGHTSTARS 2024
s. sanguis
Lactobacillus
What are the 7 bacteria identified with periodontal disease and their description? - answer✔✔-
Porphyromonas gingivalis- anerobic, gram (-) rods
- Prevotella intermedia- non-motile, anaerobic short rods
-Aggregabacter actinmycetescomitans- short, straight or curved gram (+) rods
-Capnocytophaga species
-Eikenella corrodens
-Fusobacterium nucleatum
- Campylobacter rectus
What bacteria is the composition of plaque; healthy gingiva? - answer✔✔Gram-positive aerobic
cocci and rods
What are the 2 stages of gingivitis and what bacteria cells exist in each of the stages? -
answer✔✔-Early- Actinomyces (filaments)
Chronic- Actinomyces, fusobacterum with spirochetes elevated at infected sites.
What is the description and bacteria cells are present in periodontitis. -
answer✔✔Porphyromonas gingivalis, Prevotella intermedius and other gram- negative anaerobic
organisms. Motile forms such as Spirochetes are present in late stages of development of clinical
redness
When a patient has periodontitis 3/4 of the subgingival plaque consists of? - answer✔✔-Gram-
negative anaerobic motile rods and spirochetes. plus specific causative organisms.
-Gram- positive cocci and rods (Actinomyces) are present in small quantity.
Necrotizing Ulcerative Gingivitis (NUG) consist of? - answer✔✔Spirochets, Prevotella
intermedius and fusiforms
What are the differences between subgingival plaque from diseased periodontal sites and
subgingival plaque from healthy gingival crevices? - answer✔✔-Types of bacteria present
- Numbers of microorganisms
ODP Exam 1 Questions With Revised
Answers
What is the use of phase-contrast microscopy in professional intervention? - answer✔✔Initially
assess periodontal disease activity, evaluate the success of therapy, allow the patient to become
personally involved through visualization of microflora, predict which patients and which
intraoral sites are most likely to suffer periodontal destruction.
Cocci are shaped like? - answer✔✔Spherical forms
What are the 3 groups of Cocci cell shapes and example of each. - answer✔✔Pairs-
Streptococcus pneumoniae
Chains- Streptococci
Clusters- Staphylococcus
Bacilli is shaped like? Give example - answer✔✔Rod-shape
example; Lactobacilli
What are the 3 spiral forms and give example of each - answer✔✔Curved rods- Vibrios
Rigid spirals- Spirillum
Flexible spirals- Spirochetes
What bacteria cell is the most prevalent form in the oral cavity? - answer✔✔Streptococcus
group, members of the viridans group
What are some examples of the prevalent bacteria cells in the oral cavity? - answer✔✔S. sanguis
S. mutans
S. mitis
S. salivarius
What are the etiologic factors in dental caries? - answer✔✔Streptococcus mutans
, ©THEBRIGHTSTARS 2024
s. sanguis
Lactobacillus
What are the 7 bacteria identified with periodontal disease and their description? - answer✔✔-
Porphyromonas gingivalis- anerobic, gram (-) rods
- Prevotella intermedia- non-motile, anaerobic short rods
-Aggregabacter actinmycetescomitans- short, straight or curved gram (+) rods
-Capnocytophaga species
-Eikenella corrodens
-Fusobacterium nucleatum
- Campylobacter rectus
What bacteria is the composition of plaque; healthy gingiva? - answer✔✔Gram-positive aerobic
cocci and rods
What are the 2 stages of gingivitis and what bacteria cells exist in each of the stages? -
answer✔✔-Early- Actinomyces (filaments)
Chronic- Actinomyces, fusobacterum with spirochetes elevated at infected sites.
What is the description and bacteria cells are present in periodontitis. -
answer✔✔Porphyromonas gingivalis, Prevotella intermedius and other gram- negative anaerobic
organisms. Motile forms such as Spirochetes are present in late stages of development of clinical
redness
When a patient has periodontitis 3/4 of the subgingival plaque consists of? - answer✔✔-Gram-
negative anaerobic motile rods and spirochetes. plus specific causative organisms.
-Gram- positive cocci and rods (Actinomyces) are present in small quantity.
Necrotizing Ulcerative Gingivitis (NUG) consist of? - answer✔✔Spirochets, Prevotella
intermedius and fusiforms
What are the differences between subgingival plaque from diseased periodontal sites and
subgingival plaque from healthy gingival crevices? - answer✔✔-Types of bacteria present
- Numbers of microorganisms
