What is enamel hypoplasia in adults?

Ever wonder why one tooth seems more sensitive or worn than the rest, even though you take care of your teeth? Enamel hypoplasia might be why. It means some of the enamel didn't form fully, leaving areas that are thinner than normal. It may look like pits, grooves, rough spots or places where enamel is missing. This begins while teeth are forming, but problems like sensitivity or wear may not show up until adulthood.  

What you will learn in this article: 

• Enamel hypoplasia starts while teeth form and can leave pits, grooves, rough spots or thin patches. 

• Affected teeth may be more sensitive and more likely to wear down or develop cavities. 

• Care may include fluoride, sensitivity relief, bonding, fillings or crowns, depending on the tooth. 

• Enamel hypoplasia is different from a cavity, dental erosion and fluorosis, although some changes may look similar. 

If you've noticed rough patches, discoloration or sensitive spots on your teeth, schedule an appointment with an Aspen Dental provider. Your care team can check your enamel and explain what's going on. 

What does enamel hypoplasia look like? 

Enamel hypoplasia shows up as areas where enamel is too thin or missing. A tooth may have pits, grooves, rough spots or an uneven shape. Some affected areas may also look white, yellow or brown, but color changes by themselves can come from other enamel conditions. 

This is different from a cavity. A cavity forms after the tooth comes in, as bacteria and acids break down the tooth. Enamel hypoplasia begins before the tooth comes in because some enamel did not form normally. 

Why does it show up in adulthood? 

Enamel hypoplasia forms while teeth are developing, often in childhood. The defect is already present when the tooth comes in, but a small area may be hard to notice. Over time, staining, wear or sensitivity can make it easier to see or feel. 

What causes weak or underdeveloped enamel? 

A problem during enamel development can leave part of a tooth with less enamel than normal. A review in NCBI Bookshelf explains that possible causes include inherited conditions, poor nutrition, illness or infection, certain medicines or chemical exposure and injury to a developing tooth.¹ Sometimes the cause is never clear. 

Enamel hypoplasia is different from a related condition called dental fluorosis. Fluorosis happens when a child gets too much fluoride while teeth are forming. It often changes the color or surface of several teeth, while hypoplasia means that some enamel did not form. A dental provider can tell these conditions apart. 

Enamel may also wear away after a tooth has formed. This separate process is called dental erosion and happens when acid dissolves the tooth surface.² Acidic foods and drinks may add to this wear. Products such as apple cider vinegar are acidic, so frequent contact may be a concern when enamel is already thin. 

Can weak enamel cause other problems? 

Yes. When enamel is thin or missing, the dentin underneath has less protection. This can make the tooth sensitive to hot, cold or sweet foods. 

Developmental enamel defects can also make teeth more likely to develop cavities.¹ Thin or uneven areas may wear or chip, and their rough surfaces may be harder to keep clean. The risk depends on how much enamel is affected, where the defect is and how well the tooth is protected. 

A dental provider can check the area for decay or wear and help protect it before more tooth structure is lost. 

How is enamel hypoplasia treated? 

Treatment depends on how much enamel is missing, where the defect is and whether the tooth is sensitive, worn or decayed. The missing enamel cannot grow back, but care can protect the tooth and improve comfort or appearance. 

For a mild area, a dental provider may recommend fluoride treatment, desensitizing toothpaste, a sealant or regular monitoring. A pit or worn spot may be repaired with tooth-colored composite resin. A larger or weaker area may need a veneer or crown. The American Academy of Pediatric Dentistry includes these preventive and restorative choices in its guidance on developmental enamel defects.³ 

What should you expect from a filling or crown? 

Your dental provider will examine the tooth and explain the steps before treatment. Bonding or a filling usually repairs a smaller area. A crown covers more of the tooth when it needs added strength or protection. After treatment, contact your dental provider if your bite feels uneven, the tooth stays sore or the restoration feels loose. 

Can enamel hypoplasia affect your bite or smile? 

Enamel hypoplasia can change the color, texture or shape of a tooth. In more severe cases, worn or uneven teeth may also affect how your bite feels. Restorative care may help rebuild damaged areas. If you also have a tooth-alignment problem, ask your dentist whether adult orthodontics could be part of your care plan. 

Enamel hypoplasia does not have to be treated for cosmetic reasons alone. You may want relief from sensitivity or protection against more wear. Either reason is worth discussing with a dentist. 

If you have rough patches, stains or sensitivity that will not go away, set up an appointment with your dental provider. They can examine your teeth and explain options that fit your needs. 

What is enamel hypoplasia in adults? FAQs 

Still have questions about enamel hypoplasia? These answers cover a few common concerns. 

Can enamel hypoplasia get worse over time? 

The enamel that's already missing won't grow back. But nearby areas can keep wearing down if they're exposed to acid, grinding or decay. Ask your dental provider how often you should have the affected teeth checked. 

How does a dental provider diagnose enamel hypoplasia? 

A dental provider usually spots enamel hypoplasia by looking closely at your teeth. They check for pits, grooves or discolored patches. They may also take an X-ray to rule out other issues, like decay. Tell your dental provider if you've noticed changes, so they know what to look for. 

Can you prevent enamel hypoplasia as an adult? 

Enamel hypoplasia forms while teeth are developing, so it isn't something you can prevent as an adult. What you can control is how much further wear happens. Cutting back on acidic foods and drinks and keeping up with checkups can help protect the enamel you have left. 

Does insurance cover treatment for enamel hypoplasia? 

Coverage depends on your specific plan and the treatment needed. Ask your dental office to check your benefits before any procedure. They can walk you through what your plan covers and what you may pay out of pocket. 

Sources 

¹ National Library of Medicine, NCBI Bookshelf, A Life Course Perspective on Health Trajectories and Transitions: “Oral Health Over the Life Course.” https://www.ncbi.nlm.nih.gov/books/NBK385369/ 

² American Dental Association, ADA Library and Archives: “Dental Erosion.” https://www.ada.org/resources/ada-library/oral-health-topics/dental-erosion 

³ American Academy of Pediatric Dentistry, Pediatric Dentistry: “Clinical Solutions for Developmental Defects of Enamel and Dentin in Children.” https://www.aapd.org/globalassets/media/publications/archives/330-6.pdf