Dental sealants and fillings serve different purposes and can't be directly compared as "better" or "worse". Sealants are a preventative measure, applied to healthy teeth to protect them from decay. They are often used for children whose permanent teeth have just come in. Fillings, on the other hand, are used to repair teeth after decay has already occurred. In this sense, you could argue that sealants are better because they can prevent the need for fillings and other more invasive dental treatments.
Dental sealants can last for up to 10 years with proper care. However, they should be checked for chipping or wearing at regular dental check-ups. Despite this, even if a small area of a sealed tooth becomes worn or chipped, it doesn't mean the entire sealant needs to be replaced. The dentist can repair these areas, maintaining the protection of the sealant.
Dental sealants work by creating a smooth surface over the pits and fissures on the chewing surfaces of the teeth. These areas are particularly prone to cavities as they can be difficult to clean effectively with brushing alone. The sealant material is a plastic that bonds into the depressions and grooves (pits and fissures) of the chewing surfaces, acting as a barrier and protecting enamel from plaque and acids.
Children should get dental sealants as a preventative measure to protect their teeth from decay. The sealants are applied to the chewing surfaces of the back teeth, where decay occurs most often. This treatment is especially important when a child's permanent teeth have just come in, as it can help keep them healthy and free from cavities for years to come.
Yes, dental sealants are safe. The American Dental Association, the Centers for Disease Control and Prevention, and numerous other health organizations endorse the use of dental sealants as an effective method to prevent tooth decay. The sealant material is made from medical-grade resin and has been used safely and effectively for more than four decades.