Why Do My Teeth Hurt? A Friendly Guide to Tooth Sensitivity

You take a sip of ice-cold water and wince. You bite into something sweet and feel a sharp zing. Sound familiar? Tooth sensitivity is one of the most common dental complaints, and if you’ve been quietly putting up with it, you’re not alone. Sensitivity is often your teeth’s way of telling you something, and ignoring it rarely makes it better.

What’s actually happening inside your tooth?

Teeth usually hurt with hot, cold, sweet or acidic things because the softer layer under your enamel, called dentine, has become exposed. This often happens through enamel wear, gum recession, grinding or recent dental work. A desensitising toothpaste helps many people, but pain that is severe, lasts or affects one tooth should be checked by a dentist.

Your teeth have layers. The outer layer is enamel, the hard, protective shell. Underneath is dentine, a softer layer containing thousands of microscopic tubes (called tubules) that lead towards the nerve at the centre of the tooth. When enamel wears down or gums recede, those tubules can become exposed, letting hot, cold, sweet or acidic substances reach the nerve. The result is that sharp, sometimes eye-watering jolt.

Common causes of sensitivity

There are several reasons your enamel might be worn or your roots exposed, and understanding the cause is key to finding the right solution.

Brushing too hard is a big one. If you scrub your teeth like you’re cleaning grout, you may be wearing away enamel and irritating your gums. A soft-bristled brush and gentle circular motions are all you need. Our dentists often see patients who are surprised to learn that brushing harder doesn’t mean brushing better.

Acidic foods and drinks are another cause. Citrus fruits, fizzy drinks, wine and even some health drinks such as kombucha and apple cider vinegar can erode enamel over time. In Dubai’s hot climate, many of us reach for cold, flavoured drinks throughout the day, and many are more acidic than you’d think.

Teeth grinding (bruxism) can wear down enamel, often without you realising, particularly if you grind in your sleep. Gum recession exposes the root surfaces of teeth, which have no enamel covering and are naturally more sensitive. And recent dental work, such as fillings, crowns or whitening, can cause temporary sensitivity that usually settles within a few weeks.

When should you see a dentist?

Mild sensitivity that comes and goes is common and often manageable. But if it’s severe, persistent or limited to one tooth, it’s worth getting checked sooner rather than later. Ongoing sensitivity can sometimes point to a cracked tooth, a cavity, a failing filling or early gum disease, which are usually simpler to treat when caught early. If you have sudden, severe pain or swelling, our emergency dental care team can usually see you promptly.

At Hey Dental, we look for the underlying cause rather than just masking the symptom. A proper diagnosis means the right treatment, not just a temporary fix.

What can you do at home?

Start with a desensitising toothpaste. Toothpastes containing potassium nitrate or stannous fluoride can help block the tubules in dentine and reduce sensitivity over time. Use it consistently for at least two to four weeks before judging the results. It’s not an instant fix, but it helps many people.

Switch to a soft-bristled toothbrush if you haven’t already, and be gentle. Consider waiting at least thirty minutes after eating or drinking anything acidic before you brush, as acid temporarily softens enamel and brushing straight away can add to the wear.

Cutting back on very acidic foods and drinks helps too. You don’t need to give up your favourite drinks entirely, but using a straw for iced or fizzy drinks and rinsing with water afterwards can make a difference.

What can your dentist do?

If home measures aren’t enough, your dentist has several options. Professional fluoride treatments can strengthen enamel and reduce sensitivity. Bonding agents or desensitising varnishes can be applied to exposed root surfaces. For patients who grind their teeth, a custom-made night guard helps protect against further enamel loss.

In-clinic desensitising treatments are quick, usually comfortable and can make a noticeable difference after a single visit. They work by sealing exposed tubules or depositing minerals that reinforce the tooth surface. Some patients need only one treatment, while others benefit from periodic reapplication.

If gum recession is the cause, your dentist might recommend a gum graft or other gum treatment to cover exposed roots. If a cracked tooth or cavity is to blame, treating it with a filling or other restoration usually eases the sensitivity. Where the nerve itself is affected, root canal treatment may be needed.

Prevention matters

The simplest approach to sensitivity is preventing it in the first place. Keep up a good oral hygiene routine, visit your dentist regularly for check-ups and professional cleaning, and be mindful of habits that can wear your enamel. If you notice any change in sensitivity, mention it at your next appointment, even if it seems minor. Acting early usually means simpler, less invasive treatment.

You don’t have to live with it

Tooth sensitivity is common, but it isn’t something you simply have to accept. If you’ve been avoiding cold drinks or steering clear of certain foods for so long that it feels normal, it doesn’t have to stay that way. Whether it’s a simple fix like changing your toothpaste or something that needs a closer look, the team at Hey Dental in Jumeirah Lakes Towers is here to help. You can book an appointment whenever you’re ready.