I am wondering if I need to get dental checkups even when I have no symptoms.

My teeth don't hurt much, but I sometimes feel a sensitivity.
I am wondering if I absolutely need to go to the dentist at this level.
I am confused about whether I should usually go for a check-up only when I have symptoms.
I also heard that many people are going as a preventive measure.
I am curious about the standard for whether it is acceptable if it is only slightly uncomfortable.
I am also worried that if I keep putting it off, a problem might suddenly arise.
I'm not sure if I'm at the stage where I just need a scaling.
I am also wondering if there is a specific check-up schedule.
Would it be right to go at least for a quick visit?