EUC-ODON Practice Examination: Questions
& Rationales for Dental Certification Success
,Function 1: Evaluar el estado de salud del individuo
Activity: Recopilar información del paciente
1. A 45-year-old patient reports a 3-month history of dry mouth. Which medication class is most
commonly associated with this symptom?
- A) Antihypertensives
- B) Antidepressants
- C) Antihistamines
- D) Anticonvulsants
Answer: B) Antidepressants
*Rationale: Xerostomia is a well-documented side effect of many medications. Antidepressants,
particularly SSRIs and tricyclic antidepressants, are among the most common causes.
Antihypertensives (especially diuretics), antihistamines, and anticonvulsants can also cause
xerostomia, but antidepressants have the strongest association. When collecting patient
information, identifying medication history is essential because untreated xerostomia significantly
,increases caries risk, particularly root caries, and can impact the success of prosthetic
rehabilitations .*
2. A patient presents with a chief complaint of "pain when biting on a back tooth." During the
medical history interview, which question is most important to ask first?
- A) "Have you had any recent dental procedures?"
- B) "Does the pain keep you awake at night?"
- C) "Can you localize the pain to a specific tooth?"
- D) "Does the pain worsen with hot or cold beverages?"
Answer: C) "Can you localize the pain to a specific tooth?"
*Rationale: The chief complaint guides the clinical examination. Determining whether the pain is
localized or diffuse helps differentiate between odontogenic and non-odontogenic origins.
Localized pain typically suggests a dental etiology such as cracked tooth syndrome, apical
periodontitis, or periodontal abscess. Diffuse pain may indicate referred pain from muscle tension
or sinus pathology. During the initial interview, the dentist must obtain a precise description of
symptoms to guide the physical examination appropriately .*
, 3. A patient with a history of infective endocarditis requires an extraction. According to current
guidelines, which of the following is correct regarding antibiotic prophylaxis?
- A) Prophylaxis is indicated for all dental procedures
- B) Prophylaxis is indicated only if the patient has a prosthetic heart valve
- C) Prophylaxis is indicated for procedures involving manipulation of gingival tissue or perforation
of oral mucosa
- D) Prophylaxis is no longer recommended for any dental procedure
Answer: C) Prophylaxis is indicated for procedures involving manipulation of gingival tissue or
perforation of oral mucosa
*Rationale: Current guidelines recommend antibiotic prophylaxis for patients at highest risk of
infective endocarditis (including those with prosthetic heart valves, previous infective endocarditis,
and certain congenital heart conditions) only for procedures that involve manipulation of gingival
tissue or perforation of the oral mucosa. This includes most dental extractions, periodontal
surgery, and other invasive procedures. The medical history interview must identify these risk
factors to ensure appropriate preventive measures are taken before initiating treatment .*
& Rationales for Dental Certification Success
,Function 1: Evaluar el estado de salud del individuo
Activity: Recopilar información del paciente
1. A 45-year-old patient reports a 3-month history of dry mouth. Which medication class is most
commonly associated with this symptom?
- A) Antihypertensives
- B) Antidepressants
- C) Antihistamines
- D) Anticonvulsants
Answer: B) Antidepressants
*Rationale: Xerostomia is a well-documented side effect of many medications. Antidepressants,
particularly SSRIs and tricyclic antidepressants, are among the most common causes.
Antihypertensives (especially diuretics), antihistamines, and anticonvulsants can also cause
xerostomia, but antidepressants have the strongest association. When collecting patient
information, identifying medication history is essential because untreated xerostomia significantly
,increases caries risk, particularly root caries, and can impact the success of prosthetic
rehabilitations .*
2. A patient presents with a chief complaint of "pain when biting on a back tooth." During the
medical history interview, which question is most important to ask first?
- A) "Have you had any recent dental procedures?"
- B) "Does the pain keep you awake at night?"
- C) "Can you localize the pain to a specific tooth?"
- D) "Does the pain worsen with hot or cold beverages?"
Answer: C) "Can you localize the pain to a specific tooth?"
*Rationale: The chief complaint guides the clinical examination. Determining whether the pain is
localized or diffuse helps differentiate between odontogenic and non-odontogenic origins.
Localized pain typically suggests a dental etiology such as cracked tooth syndrome, apical
periodontitis, or periodontal abscess. Diffuse pain may indicate referred pain from muscle tension
or sinus pathology. During the initial interview, the dentist must obtain a precise description of
symptoms to guide the physical examination appropriately .*
, 3. A patient with a history of infective endocarditis requires an extraction. According to current
guidelines, which of the following is correct regarding antibiotic prophylaxis?
- A) Prophylaxis is indicated for all dental procedures
- B) Prophylaxis is indicated only if the patient has a prosthetic heart valve
- C) Prophylaxis is indicated for procedures involving manipulation of gingival tissue or perforation
of oral mucosa
- D) Prophylaxis is no longer recommended for any dental procedure
Answer: C) Prophylaxis is indicated for procedures involving manipulation of gingival tissue or
perforation of oral mucosa
*Rationale: Current guidelines recommend antibiotic prophylaxis for patients at highest risk of
infective endocarditis (including those with prosthetic heart valves, previous infective endocarditis,
and certain congenital heart conditions) only for procedures that involve manipulation of gingival
tissue or perforation of the oral mucosa. This includes most dental extractions, periodontal
surgery, and other invasive procedures. The medical history interview must identify these risk
factors to ensure appropriate preventive measures are taken before initiating treatment .*
