Dental fillings restore teeth affected by decay, but they are not permanent and can fall out. Though durable, they are subject to forces and changes in the mouth that can cause displacement. Understanding why a filling comes loose helps in addressing the situation and taking preventive steps.
Common Reasons Fillings Come Loose
Several factors can lead to a dental filling becoming loose or falling out. New tooth decay forming around or beneath an existing filling is a frequent cause, as the decay weakens the tooth structure that holds the filling in place.
Constant biting and chewing forces also contribute. Chewing on hard foods, clenching, or grinding teeth (bruxism) can place pressure on fillings, causing them to crack, loosen, or dislodge. The filling material itself can degrade over many years, losing its bond with the tooth.
Issues during initial placement, such as inadequate bonding or moisture contamination, can compromise adherence. Changes in tooth structure, like cracks, can also affect the filling. Physical impact or trauma to the mouth can dislodge a filling.
Immediate Actions When a Filling Falls Out
If a dental filling falls out, contact a dentist promptly to schedule an appointment. While waiting, gently rinse your mouth with warm salt water to keep the area clean and remove food debris.
If possible, carefully retrieve the dislodged filling for your dentist to examine. The exposed tooth might become sensitive; over-the-counter pain relievers can help manage discomfort.
To protect the exposed tooth, avoid chewing on the affected side. Temporary dental wax or over-the-counter temporary filling material can cover the area for short-term protection.
Protecting Your Dental Fillings
Maintaining good oral hygiene preserves dental fillings and prevents new decay. Brushing twice daily with fluoride toothpaste and flossing helps remove plaque and food particles, preventing decay around the filling.
Regular dental check-ups and professional cleanings allow a dentist to identify and address issues with fillings early. Diet also protects fillings. Avoid excessively hard, sticky, or chewy foods to reduce the risk of dislodging a filling or damaging the tooth.
If teeth grinding or clenching (bruxism) is a concern, a custom-fitted mouthguard, especially for nighttime use, can protect both natural teeth and fillings from excessive pressure. Addressing new dental issues promptly, such as sensitivity or cracks, can prolong the life of your fillings.