出现牙疼的原因英语怎么说

Toothache can be caused by a number of factors, including tooth decay, infection, injury, or gum disease. The pain may be caused by a variety of factors, such as the tooth coming into contact with hot or cold food or drinks, or by pressure on the tooth.

Here are some examples of sentences in English that describe the cause of toothache:

"I have a toothache because I have a cavity in my tooth."
"The toothache started after I ate something cold and it touched the infected tooth."
"The toothache is due to the swelling in my gums caused by gum disease."

In Chinese, these sentences could be translated as:

"我牙疼是因为我的牙齿有虫蛀。"
"牙疼是在我吃了冷的东西后开始的，它接触了受感染的牙齿。"
"牙疼是因为我的牙龈肿胀导致的，这是由于牙周病引起的。"