American Board of Orthodontics (ABO) Practice Exam 2025 - Free Orthodontics Practice Questions and Study Guide

Question: 1 / 660

What is the prevalence of Class I malocclusion as reported by Bishara?

61.6%

The prevalence of Class I malocclusion, as reported by Bishara, highlights that a significant portion of the population exhibits this type of occlusion, which is characterized by the normal interdigitation of molars with slight variations in the alignment of teeth. Class I malocclusion is considered the most common occlusion and serves as a baseline for understanding orthodontic conditions. In the study referenced, Bishara determined that approximately 61.6% of the population presents with Class I, reflecting its widespread occurrence.

In contrast, the other reported percentages correspond to lower prevalence rates of different types of malocclusions, indicating that Class I is the most frequently observed. Understanding this prevalence is crucial for orthodontic diagnosis and treatment planning, as it sets the stage for recognizing and addressing more complex malocclusions.

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34.3%

4.1%

50.0%

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