The Role Of Genetics In Malocclusion

Bite irregularity refers to the misalignment of teeth. While non-nutritive oral habits and chronic mouth breathing can play a role in malocclusion, heredity often serves as the dominant factor 東京 前歯矯正 in its development. Facial bone morphology are inherited traits, as is tooth arch width. If one parent exhibits jaw hypoplasia, their children are at elevated risk to express the same skeletal traits. Similarly, the relative development of the maxilla and mandible—whether one protrudes more than the other—is primarily controlled by hereditary programming. This can lead to excessive vertical overlap, anterior crossbites, or lateral jaw misalignment. Tooth count variation, including third molar development, is genetically regulated. Because these traits are passed on, malocclusion often runs in families. While environmental factors can worsen the condition, the fundamental jaw-tooth architecture is typically set by genetics. This is why clinicians prioritize genetic background when formulating intervention strategies. Genetic risk assessment can help spot inherited anomalies, allowing for proactive orthodontic planning. Although braces and other appliances can correct alignment issues, understanding the hereditary foundation helps explain why some cases are structurally challenging and may require longer treatment or even jaw repositioning. Ultimately, heredity sets the foundation, and while we can optimize the result, we cannot alter the genetic code.