PEDIATRIC DENTISTRY EXAM III – 8340
2025 NEWEST EXAM WITH COMPLETE
QUESTIONS AND CORRECT ANSWERS
RATED A+
How can a lip sucking habit affect the dentition and surrounding
soft tissues? Correct Answer - Can cause an increase in overjet
with proclined maxillary incisors and retroclined mandibular
incisors
- May cause red, inflamed, and chapped lips during cold weather
T/F
Research shows a cause and effect relationship between tongue
thrust and anterior open bite malocclusion. Nail biting is not
associated with dental changes other than incisor fracture.
Correct Answer - False: no cause-effect relationship
- True
T/F
Physiological grinding in children often diminishes once the
primary teeth have exfoliated. Pathological grinding is often seen
in children with underlying neurological disorders. Correct Answer
- True
- True
List the 3 most common conditions that present with self-
mutilation. Correct Answer - Hereditary sensory neuropathies
- Lesch-Nyham syndrome
- Lange's syndrome
What general treatment can be provided for self-mutilation?
Correct Answer - Behavior modificaiton
,- Restraints
- Protective padding
- Sedation
What dental treatments can be provided to help prevent self-
mutilation? Correct Answer - Selective grinding
- Acrylic splint
- Extraction of teeth
In the primary dentition, which crowns are calcified prenatally?
Correct Answer - All anterior crowns calcified
- Occlusal portion of 1st and 2nd molars
- 1/3 of the canines calcified
- All remaining primary crowns complete calcification postnatally
T/F
No permanent teeth have begun calcification prenatally.
Permanent 1st molars complete calcification by age 3. Correct
Answer - False: cusp tips of 1st permanent molars begin
calcification prenatally
- True
By 3 years of age, which permanent teeth have begun
calcification? At what level of calcification are the permanent
teeth? Correct Answer - Permanent 1st molars: crowns
completely calcified
- Crowns of anterior teeth: ≈50% calcified
- Premolars have just begun calcification
How are the permanent tooth buds positioned relative to the
primary teeth? Correct Answer - Permanent anterior mandibular
are lingual to the primary teeth they replace
- Permanent anterior maxillary are palatal to the primary teeth
they replace
- Permanent premolars are directly below the primary molars
, T/F
Patients with a Cleft Lip/Palate tend to be missing the central
incisor on the side of the cleft. Damage to gum pads can cause
localized tooth anomalies. Correct Answer - False: tend to be
missing lateral incisors on side of cleft
- True
How do post-natal systemic disturbances affect developing teeth?
What are these? Correct Answer - Generalized effect on all teeth
forming at the time of the insult
- High fever, drugs administered, radiation therapy,
chemotherapy, fluoride ingestion
Define Anodontia. Correct Answer - *Agenesis:* failure of the
teeth to develop: congenitally missing all teeth
What is the difference between Hypodontia and Oligodontia?
Correct Answer - Hypodontia: <6 congenitally missing teeth
- Oligodontia: ≥6 congenitally missing teeth
What syndromes are associated with congenitally missing teeth?
Correct Answer - Ectodermal dysplasia
What syndromes are associated with supernumerary teeth?
Correct Answer - Gardner's syndrome
- Cleidocranial dysplasia
What is the difference between Gemination and Fusion? Correct
Answer - Fusion: 2 adjacent tooth buds join together
- Gemination: single tooth bud splits to form 2 teeth
What syndrome typically presents with Taurodontism? Correct
Answer - Klinefelter's
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