The first sip of a cold drink can make a sensitive tooth announce itself. That reaction has more than one possible explanation, so it is not something to diagnose from a single symptom alone. Paying attention to the pattern is useful; guessing at the cause is less so.
Notice the pattern
Consider which tooth reacts, what seems to trigger the feeling, and whether it fades quickly or lingers. Also notice whether the same discomfort comes up with hot foods, sweet foods, or brushing. These details can give a dental professional a clearer starting point for a conversation.
Avoid a rushed diagnosis
Sensitivity can have different causes, and a short-lived twinge does not tell the whole story. If the discomfort is new, keeps returning, becomes stronger, or interferes with eating and drinking, arrange a dental assessment rather than relying on an article to identify it. A professional can consider your symptoms alongside an examination.
Bring your questions along
You do not need to arrive with a theory about what is wrong. Simply describing what you notice is helpful, including when it began and what makes it better or worse. If you would like to discuss an appointment, you can connect with E&E Dental JB.