Tooth Structure and Shape: Genes have a direct effect on the shape, size and arrangement of teeth. Some people may genetically have straighter teeth or larger jaws, which can affect the risk of tooth decay or crowding.
Gum Health: Gum disease has been associated with genetic predisposition. Some people may be more prone to gingivitis or recession than others. This can affect the treatment and prevention of gum disease.
Enamel Quality: The quality and durability of tooth enamel also depends on genetic factors. Some people may have stronger enamel, while others may have softer enamel or enamel that wears more quickly. This can also affect the risk of tooth decay.