As people age, their teeth become more brittle and susceptible to decay. This is because the dentin, which is the layer of tissue beneath the enamel, starts to thin out. The enamel is the hard outer layer of the tooth that protects it from damage. As the dentin thins, the teeth become more likely to break or crack. In addition, the gums can recede, which can expose the roots of the teeth and make them more vulnerable to decay.
Gum disease
Gum disease is an infection of the gums that can damage the tissues that support the teeth. This can lead to the teeth becoming loose and eventually falling out. Gum disease is the leading cause of tooth loss in adults.
Trauma
Trauma to the teeth, such as a blow to the face, can also cause them to become loose or fall out.
Other medical conditions
Some medical conditions, such as diabetes, can affect the teeth and gums. This can lead to tooth decay and gum disease, which can eventually lead to tooth loss.
Diet
A diet high in sugar and carbohydrates can also contribute to tooth decay and gum disease.
Poor oral hygiene
Poor oral hygiene, such as not brushing and flossing regularly, can also lead to tooth decay and gum disease.