(Reading) Flashcards
7 cards from real ABO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 (Reading) flashcards as text
In the ABO Written Examination, which reference domain covers the biological basis of tooth movement including periodontal ligament response to force?
Answer: Biomechanics and biology
Tooth movement biology and periodontal ligament force response fall under the biomechanics and biology domain.
According to standard orthodontic literature, what is the optimal light continuous force range generally cited for bodily tooth movement?
Answer: 50-100 grams
Light continuous forces around 50-100 grams are commonly cited as optimal for efficient bodily movement.
The ABO Case Report Exam evaluates finished cases partly through which standardized scoring instrument?
Answer: Discrepancy Index and Cast-Radiograph Evaluation
ABO uses the Discrepancy Index for case complexity and the Cast-Radiograph Evaluation for finished-case quality.
Which cephalometric angle is most directly used to assess the anteroposterior relationship between maxilla and mandible?
Answer: ANB angle
The ANB angle expresses the sagittal relationship between the maxilla (A point) and mandible (B point).
In reading periapical radiographs for orthodontic assessment, external apical root resorption appears as which finding?
Answer: Blunted or shortened root apices
External apical root resorption presents radiographically as blunting or shortening of the root apex.
Per ABO clinical standards, an ideal overbite at case completion is generally described as which percentage of incisor overlap?
Answer: 10-30%
A normal, ideal overbite is roughly 10-30% vertical overlap of the mandibular incisors.
Which growth prediction concept states that mandibular growth direction can be estimated from the cephalometric Y-axis?
Answer: Growth axis interpretation
The Y-axis (SGn to Frankfort) is read to interpret the direction and pattern of mandibular growth.