ODP Exam 1 UPDATED ACTUAL Exam
Questions and CORRECT Answers
What is the use of phase-contrast microscopy in professional intervention? - CORRECT
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? - CORRECT ANSWER - Spherical forms
What are the 3 groups of Cocci cell shapes and example of each. - CORRECT ANSWER -
Pairs- Streptococcus pneumoniae
Chains- Streptococci
Clusters- Staphylococcus
Bacilli is shaped like? Give example - CORRECT ANSWER - Rod-shape
example; Lactobacilli
What are the 3 spiral forms and give example of each - CORRECT ANSWER - Curved
rods- Vibrios
Rigid spirals- Spirillum
Flexible spirals- Spirochetes
What bacteria cell is the most prevalent form in the oral cavity? - CORRECT ANSWER -
Streptococcus group, members of the viridans group
What are some examples of the prevalent bacteria cells in the oral cavity? - CORRECT
ANSWER - S. sanguis
S. mutans
S. mitis
, S. salivarius
What are the etiologic factors in dental caries? - CORRECT ANSWER - Streptococcus
mutans
s. sanguis
Lactobacillus
What are the 7 bacteria identified with periodontal disease and their description? - CORRECT
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? - CORRECT ANSWER -
Gram-positive aerobic cocci and rods
What are the 2 stages of gingivitis and what bacteria cells exist in each of the stages? -
CORRECT ANSWER - -Early- Actinomyces (filaments)
Chronic- Actinomyces, fusobacterum with spirochetes elevated at infected sites.
What is the description and bacteria cells are present in periodontitis. - CORRECT
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? - CORRECT
ANSWER - -Gram- negative anaerobic motile rods and spirochetes. plus specific causative
organisms.
Questions and CORRECT Answers
What is the use of phase-contrast microscopy in professional intervention? - CORRECT
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? - CORRECT ANSWER - Spherical forms
What are the 3 groups of Cocci cell shapes and example of each. - CORRECT ANSWER -
Pairs- Streptococcus pneumoniae
Chains- Streptococci
Clusters- Staphylococcus
Bacilli is shaped like? Give example - CORRECT ANSWER - Rod-shape
example; Lactobacilli
What are the 3 spiral forms and give example of each - CORRECT ANSWER - Curved
rods- Vibrios
Rigid spirals- Spirillum
Flexible spirals- Spirochetes
What bacteria cell is the most prevalent form in the oral cavity? - CORRECT ANSWER -
Streptococcus group, members of the viridans group
What are some examples of the prevalent bacteria cells in the oral cavity? - CORRECT
ANSWER - S. sanguis
S. mutans
S. mitis
, S. salivarius
What are the etiologic factors in dental caries? - CORRECT ANSWER - Streptococcus
mutans
s. sanguis
Lactobacillus
What are the 7 bacteria identified with periodontal disease and their description? - CORRECT
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? - CORRECT ANSWER -
Gram-positive aerobic cocci and rods
What are the 2 stages of gingivitis and what bacteria cells exist in each of the stages? -
CORRECT ANSWER - -Early- Actinomyces (filaments)
Chronic- Actinomyces, fusobacterum with spirochetes elevated at infected sites.
What is the description and bacteria cells are present in periodontitis. - CORRECT
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? - CORRECT
ANSWER - -Gram- negative anaerobic motile rods and spirochetes. plus specific causative
organisms.
