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AAPD Study Guide Set Well Noted
Answers
\.In infants, what is the best indicator for future caries? - Answer- plaque on maxillary
anteriors
\.A pea-sized amount of fluoridated toothpaste is appropriate for what age range? - Answer-
age 2-5
\.In a child under the age of 3, what factors automatically assign that child an S-ECC status? -
Answer- White spot lesions, any carious lesion on a smooth surface
\.Name 7 factors that assign a high caries risk to a 0-5 year old. - Answer- 1)
Mother/caregiver with active caries; 2) Parent/caregiver low SES; 3) greater than three
between-meal sugar-containing snacks or beverages per day; 4) Child is put to bed with a bottle
containing natural or added sugar; 5) child has greater than 1 DMFS; 6) Child has active white
spot lesions or enamel defects; 7) Child has elevated MS levels
\.Name 3 factors that assign a moderate caries risk to a 0-5 year old. - Answer- 1) Child has
special health care needs; 2) Child is a recent immigrant; 3) Child has plaque on teeth
\.Name the 4 caries protective factors. - Answer- 1) Child receives optimally-fluoridated
drinking water or fluoride supplements; 2) Child has teeth brushed daily with fluoridated
,toothpaste; 3) Child receives topical fluoride from health professional; 4) Child has dental
home/regular dental care
\.Neural crest cells develop from ________. Name some structures that neural crests are
responsible for forming. - Answer- 1) ectoderm on the lateral border of the neural plate. 2)
bone, cartilage, dentin, dermis (not enamel)
\.Dental lamina begins formation at _______ embryonic age. - Answer- 6 weeks
\.From what structure does dental lamina form? - Answer- basal layer of oral epithelium
\.What structures form from dental lamina? - Answer- tooth buds
\.At what age does the permanent first molar begin initiation? At what age does the permanent
2nd molar begin initiation? - Answer- 1) 16 weeks in utero 2) 4-5 years
\.Name the components of the tooth bud. - Answer- enamel organ, dental papilla, dental sac
\.Name the components of the enamel organ. - Answer- Inner enamel epithelium (concavity),
outer enamel epithelium (convexity), stellate reticulum (center)
\.The dental papilla forms from ________. - Answer- neural crest
\.Name the stages of tooth development in order. - Answer- Bud stage, cap stage, bell stage,
advanced bell stage
,\.Hertwig's epithelial root sheath is composed of what structures? - Answer- inner and outer
enamel epithelia (not stratum intermedium or stellate reticulum)
\.The remnants of Hertwig's root sheath persist as _____. - Answer- rests of Malassez
\.Problems in the initiation stage of tooth development lead to anomalies of __________. -
Answer- Tooth number
\.Problems in the proliferation stage of tooth development lead to anomalies of __________. -
Answer- size, proportion, number, twinning
\.Problems in the histodifferentiation stage of tooth development lead to anomalies of
____________. - Answer- anomalies of enamel and dentin (enamel hypoplasia, AI, DI, DD)
\.Problems in the morphodifferentiation stage of tooth development lead to _____________. -
Answer- Anomalies of enamel, dentin, and cementum
\.Is hyperdontia more common in males or females? - Answer- males (2:1)
\.Is hyperdontia more common in primary or permanent dentition? - Answer- permanent
dentition (5:1)
\.Is hyperdontia more common in the maxilla or the mandible? - Answer- maxilla (9:1)
\.Name the most common teeth affected by hypodontia in order of frequency. - Answer- 3rd
molars, mandibular 2nd premolar, maxillary lateral, maxillary 2nd premolar
, \.Name (9) syndromes associated with hyperdontia. - Answer- Apert's, cleidocranial
dysplasia, Gardner syndrome, Crouzon syndrome, Sturge-Weber syndrome, Orofaciodigital
syndrome I, Hallerman-Strieff syndrome, cleft lip and palate, Down syndrome
\.Describe features of Apert Syndrome. - Answer- supernumerary teeth, cleft palate,
delayed/ectopic eruption, shovel shaped incisors, hypoplastic midface, syndactyly,
craniosynostosis, hypertelorism, class III with anterior openbite, crowded dentition
\.Describe features of cleidocranial dysplasia. - Answer- supernumerary teeth, delayed
development/eruption, midface hypoplasia, enamel hypoplasia, missing clavicle,
craniosynostosis
\.Describe features of Gardner Syndrome - Answer- supernumerary teeth, osteomas of the
jaw, delayed eruption, colonic polyps
\.Describe features of Crouzon syndrome. - Answer- supernumerary teeth, midface
hypoplasia, inverted V shaped palate, craniosynostosis, exopthalamos
\.Describe features of Sturge-Weber syndrome - Answer- port-wine stains which follow the
trigeminal nerve, supernumerary teeth, overgrowth of maxilla, ipsilateral gyriform calcifications
of cerebral cortex, 100% have seizures, hemiplegia, ocular defects, bleeding and gingival
hyperplasia, alveolar bone loss, pyogenic granulomas
\.Describe features of orofaciodigital syndrome. - Answer- supernumerary teeth and/or
hypodontia; multiple or hyperplastic frenula, cleft tongue
\.Describe features of Hallerman-Strieff syndrome. - Answer- supernumerary teeth,
mandibular hypoplasia, high palatal vault, delayed primary exfoliation, malar hypoplasia