Ortho-Pedo Flashcards
A 15 years old female has lived in a non-fluoridated area all of her life. Which of the following is most likely to occur in this
young lady when she moves to a community where the drinking water naturally contains 6 ppm of fluoride?
A. 50% reduction in dental caries
B. An increase in the amount of fluoride stored in her bones
C. Moderate dental fluorosis
D. Gastrointestinal problems
B. An increase in the amount of fluoride stored in her bones
A 15 years old female has lived in a non-fluoridated area all of her life. Which of the following is most likely to occur in this
young lady when she moves to a community where the drinking water naturally contains 6 ppm of fluoride?
A. 50% reduction in dental caries
B. An increase in the amount of fluoride stored in her bones
C. Moderate dental fluorosis
D. Gastrointestinal problems
B. An increase in the amount of fluoride stored in her bones
A 20-month-old female presents with her mother to your office for her first check-up. Her mother is concerned because her
daughter only has a few erupted teeth. Upon examining the patient, which teeth should you expect to find?
A. Primary centrals, laterals, canines
B. Primary centrals, laterals, first molars, second molars
C. Primary centrals, laterals, first molars
D. Primary centrals, laterals, first molars, canines
D. Primary centrals, laterals, first molars, canines
A 5-year-old girl has her molar occlusion in flush terminal plane. What is most likely to be her occlusion at age 10 with proper
adequate space management?
A. Class I
B. Class II division 1
C. Class II division 2
D. Class III
A. Class I
A branch of orthodontics which eliminates factors that may lead to malocclusion in normally developing dentition
A. Preventive
B. Interceptive
C. Corrective
D. Different
A. Preventive
A child’s behavior can be handled by familiarization if the basis of the problem is
A. Pain
B. Fear
C. Anxiety
D. Attitude of the parents
B. Fear
A distal step means
A. Edge-to-edge position of cusps of permanent maxillary and mandibular first molars, leading to Angle class II malocclusion
B. Distal of maxillary first molars is mesial to the distal of mandibular molars, leading to Angle class II malocclusion
C. Distal of maxillary first molars is distal to the distal of mandibular molars, leading to Angle class II malocclusion
D. Incisal edge of maxillary incisors is distal to the incisal edge of mandibular incisors.
B. Distal of maxillary first molars is mesial to the distal of mandibular molars, leading to Angle class II malocclusion
A large SNB value in cephalometric analysis is indicative of a
A. Class II skeletal proportion
B. Class III skeletal proportion
C. Normal skeletal proportion
D. Concave profile
B. Class III skeletal proportion
A method of predicting the size of succedaneous teeth and space available in the arch
A. Mixed dentition analysis
B. Bolton’s analysis
C. Peck and peck’s index
D. Howe’s analysis
A. Mixed dentition analysis
A mother brings her son to your office for his 1-year-old dental appointment. You notice that there is a problem with the shape
of his teeth. The problem probably occurred in what stage of development?
A. Initiation
B. Differentiation
C. Proliferation
D. Apposition
C. Proliferation
A removable appliance used as distal extension as in a loss of 6 or loss of E before eruption of 6 and is used if lingual holding
arch can’t be used
A. Transpalatal bar
B. Space saddle appliance
C. Split saddle appliance
D. Hawley appliance
B. Space saddle appliance
After eruption of PERMANENT tooth, the time required for apical closure is approximately ____
A. ½ - 1 year
B. 2 ½ - 3 years
C. 4 ½ - 5 years
D. 6 ½ - 7 years
B. 2 ½ - 3 years
All of the following are correct with regards to treatment of a diastema except:
A. Diastema of 2 mm or less usually closes spontaneously if lateral incisors are in good position.
B. Spaces will always close as permanent canines erupt.
C. Teeth should be aligned first if the diastema is caused by an abnormal frenum.
D. In such cases, a frenectomy should be performed after canines have erupted.
B. Spaces will always close as permanent canines erupt.
All of the following are indications for removable appliances except:
A. Limited tipping movement
B. Close extraction spaces fully
C. Retention after comprehensive treatment
D. Growth modification during mixed dentition
B. Close extraction spaces fully
All of the following are true in regards to growth of the mandible except:
A. The main growth thrust of the condyle is upward and forward to fill in the resultant space to maintain contact with
the base of the skull
B. Resorption of bone occurs along the anterior surface of the ramus.
C. Apposition of bone occurs along the posterior surface of the ramus.
D. Growth at the mandibular condyle during puberty usually results in increased posterior facial height.
A. The main growth thrust of the condyle is upward and forward to fill in the resultant space to maintain contact with
the base of the skull
All of the following procedures have proved beneficial in treating a mentally retarded child EXCEPT
A. Schedule long appointments
B. Speak slowly and in very simple terms
C. Listen carefully to the patient
D. Ask the patient if there are any questions about anything you will be doing
A. Schedule long appointments
All of the following statements regarding open bite are true except:
A. Maxillary constriction usually seen in open bite cases results from increased pressure on the mylohyoid muscles
from finger sucking.
B. The resultant maxillary constriction seen in open-bite cases tends to cause bilateral cross bites.
C. If the finger-sucking habit involves the hand resting on the chin, mandibular growth can get retarded producing a class II
retrognathic profile.
D. Compensatory tongue thrust habit is often observed in patients with open bite
A. Maxillary constriction usually seen in open bite cases results from increased pressure on the mylohyoid muscles
from finger sucking.
All of the following statements regarding types of space maintainers are true except:
A. Band and loop appliance prevents mesial migration of primary second molar after unilateral loss of primary first molar.
B. Distal shoe appliance prevents mesial migration of primary second molar after unilateral loss of primary first
molar.
C. A Nance appliance is used to prevent mesial rotation and mesial drift of permanent maxillary molars when primary maxillary
molars have been bilaterally lost.
D. Premature loss of a primary canine may be due to arch length deficiency, and it results in lingual collapse of mandibular
anterior.
B. Distal shoe appliance prevents mesial migration of primary second molar after unilateral loss of primary first
molar
An exchange of minerals between saliva and enamel is
A. Responsible for remineralization
B. Destructive in the enamel
C. Unimportant in tooth maintenance
D. None of the above
A. Responsible for remineralization
An orthodontist has moved the crown of tooth #21 in one direction, whereas the roots were displaced in the opposite
direction about an axis of rotation. This is the definition of:
A. Tipping
B. Bodily movement
C. Rotation
D. Extrusion
A. Tipping
ANB is a measurement gathered from a lateral cephalometric radiograph, used to determine the magnitude of the skeletal jaw
discrepancy. How is ANB determined?
A. SNA minus SNB
B. SNA plus SNB
C. ANS-Me minus SNB
D. SN-MP minus SNB
A. SNA minus SNB
At what age can one expect eruption of a maxillary permanent canine in an individual with an ideal eruption sequence?
A. 8 to 9 years
B. 9 to 10 years
C. 10 to 11 years
D. 11 to 12 years
D. 11 to 12 years
Avulsed teeth, primary-permanent should be treated as follows
A. Primary: reimplanted and splinted/Permanent: reimplanted and splinted
B. Primary: no reimplantation/Permanent: reimplanted and splinted rigidly
C. Primary: no reimplantation/Permanent: reimplanted and splinted flexibly for 14 days maximum
D. Primary: no reimplantation/Permanent: reimplanted and splinted flexibly
C. Primary: no reimplantation/Permanent: reimplanted and splinted flexibly for 14 days maximum
Bimaxillary protrusion is a profile type that provides more space to accommodate teeth and alleviate crowding. The clinical
picture of bimaxillary protrusion is:
A. The mandibular teeth lean buccally
B. The maxillary teeth lean buccally
C. The teeth in both arches lean lingually
D. The teeth in both arches lean buccally
D. The teeth in both arches lean buccally
Bone grows by the addition of new layers on previously formed layers. What is this process called?
A. Endochondral growth
B. Appositional growth
C. Intramembranous growth
D. Interstitial growth
B. Appositional growth
Bones grow by the addition of bone tissue on one side of a bony cortex and taking away from the other side. This process is
known as
A. Deposition
B. Translocation
C. Drift
D. Resorption
C. Drift
Cheek biting is corrected by
A. Bite block
B. Cross elastic
C. Oral screen
D. Tongue guard
C. Oral screen
Class II division 1 subdivision right means:
A. The right molar is in a class II relationship, whereas the left molar is in a class I relationship.
B. The right molar is in a class I relationship, whereas the left molar is in a class II relationship.
C. Both molars are in class I relationship, whereas maxillary incisors are in linguoversion.
D. Both molars are in class II relationship, whereas maxillary incisors are in labioversion
A. The right molar is in a class II relationship, whereas the left molar is in a class I relationship.
During pulpotomy, what is the proper way of controlling hemorrhage from pulp stump
A. Apply pellet with moistened Formocresol
B. Put cotton pellet inside the chamber
C. Fill chamber with ZOE
D. Fill canals with calcium hydroxide
B. Put cotton pellet inside the chamber
During what stage of development is peer group identity is STRONGEST?
A. Adult
B. Teenager
C. Latency
D. Pre-puberty
B. Teenager
During what stage of development is peer group identity strongest?
A. Teenager
B. Latency
C. Pre-puberty
D. Adulthood
A. Teenager
Each of the following is a contraindication to molar uprighting except
A. Low mandibular plane
B. Severe lingual inclination of the tooth in addition to mesial tipping
C. Occlusal plane discrepancy
D. Presence of periodontal disease
A. Low mandibular plane
Fluoride levels in excess of _______ begin to pose a risk for fluorosis
A. One part per million
B. Two parts per million
C. Three parts per million
D. Four parts per million
C. Three parts per million
Frankfort horizontal plane is a reference plane constructed by joining which of the following landmarks?
A. Nasion and sella
B. Porion and sella
C. Porion and orbitale
D. Porion and nasion
C. Porion and orbitale
How much fluoride, in ppm, is contained in commonly used toothpastes?
A. 1,000 ppm
B. 5,000 ppm
C. 9,000 ppm
D. 12,300 ppm
A. 1,000 ppm
If a 7-year-old patient presents with early loss of Tooth #51, maxillary right second primary molar, what is the appropriate
space maintainer that can be used?
A. Nance appliance
B. Distal shoe
C. Band-and-loop
D. Lower lingual arch
C. Band-and-loop
If a person has a severe skeletal class II malocclusion, one would typically expect to see this manifest clinically with a:
A. Severe underbite
B. Severe overjet
C. A protuberant chin
D. Excessive occlusal wear
B. Severe overjet
If enamel and dentin are not formed correctly within the defect, a direct communication from the oral cavity with pulp tissue
can occur
A. Leong’s premolar
B. Dens in dente
C. Talon’s cusp
D. Mulberry molar
B. Dens in dente
If enamel and dentin are not formed correctly within the defect, a direct communication from the oral cavity with pulp tissue
can occur
A. Leong’s premolar
B. Dens in dente
C. Talon’s cusp
D. Mulberry molar
B. Dens in dente
In a baby bottle decay or early childhood caries, the teeth typically are decayed in specific orders. The correct order from first
to last is
A. Maxillary anterior teeth, maxillary posterior teeth, mandibular posterior teeth, mandibular anterior teeth
B. Mandibular anterior teeth, mandibular posterior teeth, maxillary anterior teeth, maxillary posterior teeth
C. Mandibular posterior teeth, maxillary anterior teeth, maxillary posterior teeth, mandibular anterior teeth
D. Maxillary posterior teeth, mandibular posterior teeth, mandibular anterior teeth, maxillary anterior teeth
A. Maxillary anterior teeth, maxillary posterior teeth, mandibular posterior teeth, mandibular anterior teeth