Recession exposes root surface, which is softer than enamel and more sensitive. It has several causes, and identifying which one applies matters more than treating the appearance.
Hard bristles and heavy pressure are a frequent factor.
Gum disease
Inflammation and bone loss can take gum level with them.
Grinding and clenching
Sustained load contributes in some people.
Tooth position
A tooth sitting outside the arch has thinner support.
Thin tissue naturally
Some people simply have thinner gum tissue.
What can be done
The first job is stopping the cause — often a change in brushing technique, treating inflammation, or addressing grinding. Exposed root surfaces that are sensitive can often be managed with desensitising measures or, where appropriate, bonding.
Gum grafting can cover recession in selected cases and is a periodontal procedure we would refer for. Recession does not reverse on its own, so the realistic goal is usually to stop it progressing.
What we can explain here — and what needs an exam
A page can inform you. It cannot examine you.
We can explain online
What causes recession
Why exposed root is more sensitive
That recession does not self-reverse
Determined after an exam
Which cause applies to you
Whether grafting is appropriate
Whether a specialist referral is warranted
What to do next
Bring it up at an exam — the useful step is identifying the cause before it goes further.