ORTHODONTICS-TOP SCORES MADE SIMPLE | TRUSTED TEST SOLUTIONS! QUALITY CONTENT YOU CAN RELY ON!

ORTHODONTICS-TOP SCORES MADE SIMPLE | TRUSTED
TEST SOLUTIONS!
QUALITY CONTENT YOU CAN RELY ON!

Orthodontics is the Answer: specialty of dentistry concerned with the supervision,
guidance, and correction of the growing and mature dentofacial structure
Indications for orthodontic treatment include:
A. malocclusion.
B. impaired mastication.
C. susceptibility to decay.
D. all of the above Answer: D. all of the above
Factors Related to Malocclusion Developmental causes Answer: Congenitally missing
teeth
Malformed teeth
Supernumerary teeth
Interference with eruption
Ectopic eruption
What are malformed teeth? Answer: Interruption or absence of tooth bud formation
results in congenitally missing teeth
What is fetal molding? Answer: when during development an arm or leg presses
against the mandible this can result in abnormal teeth and malocclusion
Factors Related to Malocclusion - Genetic causes Answer: Discrepancies in the size of
the jaw, teeth, or both
Factors Related to Malocclusion - Environmental causes Answer: Birth injuries
Fetal molding
Trauma
Any deviation from class I occlusion is considered Answer: malocclusion
Factors Related to Malocclusion - Habits Answer: Tongue thrusting
Tongue-thrust swallowing
Thumb and finger sucking


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, Bruxism
Mouth breathing
Excessive lip protrusion is most often seen in Answer: class II malocclusion
What is Class II Malocclusion? Answer: Distoclusion
In Class II Malocclusion, how is the mandible positioned in relation to the maxilla?
Answer: The body of the mandible is in an abnormal distal relationship to the maxilla.
What happens to the maxillary anterior teeth in Class II Malocclusion? Answer: The
maxillary anterior teeth protrude over the mandibular anterior teeth.
What is another term for Class III Malocclusion? Answer: Mesioclusion
In Class III Malocclusion, how is the body of the mandible positioned relative to the
maxilla? Answer: In an abnormal mesial relationship
What happens to the mandibular anterior teeth in Class III Malocclusion? Answer: They
protrude in front of the maxillary anterior teeth
Class III Malocclusion The facial profile is known Answer: as prognathic.
The lower lip and mandible are prominent
Malaligned Teeth - Crowding Answer: In this, the most common contributor to
malocclusion, one or many teeth are involved in misplacement
What is overjet in relation to malaligned teeth? Answer: An excessive protrusion of the
maxillary incisors.
What results from an excessive overjet? Answer: Space or distance between the facial
surfaces of the mandibular incisors and the lingual surface of the maxillary incisors.
What is a consequence of malaligned teeth? Answer: Crowding or overlapping makes
oral hygiene (brushing and flossing) more of a challenge for the patient.
What is overjet in dentistry? Answer: Overjet is the horizontal distance between the
labioincisal surfaces on the mandibular incisors and the linguoincisal surfaces of the
maxillary incisors.
What instrument would you use to measure an overjet? Answer: Probe
Malaligned Teeth - Overbite Answer: vertical distance by which the maxillary incisors
overlap the mandibular incisors
Malaligned Teeth - Openbite Answer: A lack of vertical overlap of the maxillary incisors
results in an opening of the anterior teeth when occluded

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