What Causes Cavities and How Dentists Treat Them
Noticing a dark spot on your tooth or a sudden twinge when you eat something sweet can be worrying. Cavities are one of the most common dental problems we see at our clinic in DLF Phase 4, Gurgaon, and the good news is that they are very treatable once caught early. This article explains why cavities form, how we diagnose them, and what filling options are available.
What Causes Cavities and Tooth Decay
Cavities form when acids produced by bacteria in your mouth wear away the hard outer layer of your teeth, called enamel. This process, known as tooth decay, usually happens gradually and is driven by a few common factors.
- Sugar and starch in the diet: Bacteria in plaque feed on sugars and produce acid as a byproduct, which slowly dissolves enamel.
- Poor oral hygiene: Infrequent or ineffective brushing and flossing allow plaque to build up on and between teeth.
- Frequent snacking: Constant grazing keeps your mouth in an acidic state for longer periods, giving enamel less time to repair itself.
- Dry mouth: Saliva helps neutralize acid and wash away food particles. Reduced saliva flow, from certain medicines or habits, raises decay risk.
- Deep grooves and crowding: Teeth with deep pits or overlapping areas are harder to clean and more prone to decay.
How Dentists Diagnose Cavities
Diagnosing a cavity usually involves more than just looking for a visible hole. A thorough check helps us catch decay at an early, easier-to-treat stage.
Visual and Physical Examination
During a routine check-up, the dentist examines each tooth for discoloration, rough patches, or soft spots. A dental probe may be gently used to check if the surface feels sticky or soft, which can indicate early decay.
X-Rays
Many cavities, especially those between teeth or under old fillings, are not visible to the naked eye. Dental X-rays let us see decay hidden beneath the surface or between teeth, and help us judge how close it is to the nerve of the tooth.
Other Diagnostic Tools
In some cases, dentists use special dyes or laser-based cavity detection devices to identify very early decay that is not yet visible on X-rays. These tools are especially useful for monitoring teeth over time.
Comparing Filling Material Options
Once a cavity is confirmed, the decayed portion is removed and the tooth is restored with a filling material. Several options are commonly used in Gurgaon clinics, each with its own strengths.
| Material | Appearance | Best Suited For | Typical Range (INR) |
|---|---|---|---|
| Composite Resin | Tooth-colored, blends naturally | Front and back teeth, small to medium cavities | 1,500 to 4,500 per tooth |
| Amalgam | Silver-grey, visible | Back teeth with heavy chewing load | 800 to 2,000 per tooth |
| Glass Ionomer | Tooth-colored, less durable | Small cavities, children's teeth, near the gumline | 1,000 to 2,500 per tooth |
These are typical ranges for DLF Phase 4, Gurgaon and actual costs depend on the size of the cavity, the tooth involved, and your specific case. Your dentist can give you an accurate estimate after examination.
Composite Fillings
Composite resin is a popular choice because it matches the natural color of your teeth and bonds directly to tooth structure. It works well for both front and back teeth and requires slightly less removal of healthy tooth compared to older materials.
Amalgam Fillings
Amalgam, a mix of metals, has been used for over a century and remains a strong, long-lasting option, particularly for molars that handle heavy chewing forces. Its main drawback is the silver color, which is more noticeable than composite.
Glass Ionomer Fillings
Glass ionomer releases fluoride, which can offer some extra protection against further decay. It is often used for small cavities, in children, or in areas near the gumline where moisture control during the procedure is difficult. It is generally less wear-resistant than composite or amalgam.
Which Filling Is Right for You
The right material depends on where the cavity is located, how large it is, your bite pattern, and your budget. During your visit, your dentist will explain the pros and cons for your specific tooth so you can make an informed decision. If you have noticed a dark spot, sensitivity, or discomfort, it is best to get it checked before the decay progresses further.
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Frequently asked questions
Can a cavity heal on its own without a filling?
Very early decay that has not broken through the enamel surface can sometimes be reversed with fluoride, better brushing, and diet changes. Once a cavity has formed a hole, it will not heal on its own and needs a filling or other restoration.
Does getting a filling hurt?
Most fillings are done under local anesthesia, so you should not feel pain during the procedure. Some mild sensitivity to hot, cold, or pressure is normal for a few days afterward.
How long do dental fillings last?
This depends on the material, the size of the cavity, and your oral hygiene. Composite fillings typically last several years, while well placed amalgam fillings can last a decade or longer with good care.
Is amalgam filling safe?
Amalgam has been used safely for decades and is still considered a reliable option by dental associations worldwide. Many patients now prefer composite for front teeth because it blends with natural tooth color.
Treatment costs mentioned on this page are indicative ranges for the DLF Phase 4, Gurgaon region. Your exact cost depends on your case and will be confirmed after a clinical examination at the clinic.