Mastering the EGEL Dentistry Exam: Integrated
Clinical Scenarios with Answer Rationales
Diagnostic and Clinical Evaluation
1. A 30-year-old female patient presents with gingival bleeding in the right first mandibular molar, which registers a 6mm periodontal pocket on probing. She
also exhibits a very thin build, excessive sweating, nervousness, exophthalmos, and smooth, red, warm skin. Vital signs: BP 130/80 mmHg, HR 110/min, RR
19/min, temperature 37°C. Based on the physical examination findings, the patient presents:
A) Hypertension
,B) Tachypnea
C) Tachycardia
D) Fever
Answer: C) Tachycardia
Rationale: The heart rate of 110/min exceeds the normal range (60-100/min), indicating tachycardia. Blood pressure is within normal limits (130/80 mmHg),
respiratory rate is normal (12-20/min), and temperature is normal (37°C) .
2. A 5-year-old child is brought to the clinic due to small white spots that appeared in the mouth two days ago. Parents report mild fever, cough, flu, and an
abdominal rash. Clinical examination reveals an erythematous maculopapular rash on the wrists and palms. Intraoral examination shows white spots
approximately 2mm in diameter surrounded by an erythematous halo on the oral mucosa at the level of the upper second primary molar. What disease does
the patient present?
A) Varicella (Chickenpox)
B) Measles (Sarampión)
C) Rubella
D) Scarlet fever
Answer: B) Measles (Sarampión)
,Rationale: The combination of Koplik spots (white spots with erythematous halo on buccal mucosa), maculopapular rash, fever, cough, and coryza is
pathognomonic for measles. The rash distribution on wrists and palms is characteristic .
3. What is the diagnosis of the oral manifestations in the patient with measles?
A) Forchheimer spots
B) Fordyce granules
C) Oral thrush
D) Koplik spots
Answer: D) Koplik spots
Rationale: Koplik spots are the pathognomonic oral manifestation of measles, appearing as small white spots (1-3mm) with an erythematous halo on the
buccal mucosa, typically opposite the upper second molars .
4. What is the etiological agent of measles?
, A) Rubivirus
B) Paramyxovirus
C) Herpes zoster
D) Streptococcus pyogenes
Answer: B) Paramyxovirus
Rationale: Measles is caused by the measles virus, a member of the Paramyxoviridae family, specifically the genus Morbillivirus .
5. A 45-year-old patient reports loss of taste, diarrhea, involuntary eyelid twitching, and dizziness. Physical examination reveals ataxic gait and sensory
alterations in the lower extremities. What is the presumptive diagnosis of their systemic condition?
A) Pernicious anemia
B) Liver disease
C) Ménière's syndrome
D) Hypoparathyroidism
Answer: A) Pernicious anemia
Clinical Scenarios with Answer Rationales
Diagnostic and Clinical Evaluation
1. A 30-year-old female patient presents with gingival bleeding in the right first mandibular molar, which registers a 6mm periodontal pocket on probing. She
also exhibits a very thin build, excessive sweating, nervousness, exophthalmos, and smooth, red, warm skin. Vital signs: BP 130/80 mmHg, HR 110/min, RR
19/min, temperature 37°C. Based on the physical examination findings, the patient presents:
A) Hypertension
,B) Tachypnea
C) Tachycardia
D) Fever
Answer: C) Tachycardia
Rationale: The heart rate of 110/min exceeds the normal range (60-100/min), indicating tachycardia. Blood pressure is within normal limits (130/80 mmHg),
respiratory rate is normal (12-20/min), and temperature is normal (37°C) .
2. A 5-year-old child is brought to the clinic due to small white spots that appeared in the mouth two days ago. Parents report mild fever, cough, flu, and an
abdominal rash. Clinical examination reveals an erythematous maculopapular rash on the wrists and palms. Intraoral examination shows white spots
approximately 2mm in diameter surrounded by an erythematous halo on the oral mucosa at the level of the upper second primary molar. What disease does
the patient present?
A) Varicella (Chickenpox)
B) Measles (Sarampión)
C) Rubella
D) Scarlet fever
Answer: B) Measles (Sarampión)
,Rationale: The combination of Koplik spots (white spots with erythematous halo on buccal mucosa), maculopapular rash, fever, cough, and coryza is
pathognomonic for measles. The rash distribution on wrists and palms is characteristic .
3. What is the diagnosis of the oral manifestations in the patient with measles?
A) Forchheimer spots
B) Fordyce granules
C) Oral thrush
D) Koplik spots
Answer: D) Koplik spots
Rationale: Koplik spots are the pathognomonic oral manifestation of measles, appearing as small white spots (1-3mm) with an erythematous halo on the
buccal mucosa, typically opposite the upper second molars .
4. What is the etiological agent of measles?
, A) Rubivirus
B) Paramyxovirus
C) Herpes zoster
D) Streptococcus pyogenes
Answer: B) Paramyxovirus
Rationale: Measles is caused by the measles virus, a member of the Paramyxoviridae family, specifically the genus Morbillivirus .
5. A 45-year-old patient reports loss of taste, diarrhea, involuntary eyelid twitching, and dizziness. Physical examination reveals ataxic gait and sensory
alterations in the lower extremities. What is the presumptive diagnosis of their systemic condition?
A) Pernicious anemia
B) Liver disease
C) Ménière's syndrome
D) Hypoparathyroidism
Answer: A) Pernicious anemia
