Why do dental crowns fail

Dental crowns are a popular solution for many dental issues, such as protecting weak teeth, restoring broken or damaged teeth, or improving the appearance of teeth. While crowns are generally durable and long-lasting, there are instances where they can fail. Understanding the factors that contribute to crown failure can help patients and dental professionals mitigate risks and prolong the lifespan of dental restorations.

1. Poor oral hygiene

One of the primary reasons for dental crown failure is inadequate oral hygiene. Neglecting proper brushing, flossing, and regular dental check-ups can lead to gum disease, tooth decay, and other oral health issues. When the underlying tooth structure supporting the crown becomes compromised, it can result in crown failure.

To maintain the longevity of dental crowns, it is essential to follow a strict oral hygiene routine, including brushing twice a day with a fluoride toothpaste, flossing daily, and visiting the dentist for regular cleanings and exams.

2. Tooth decay

If there is existing tooth decay beneath the dental crown, it can cause the underlying tooth structure to weaken and compromise the crown's stability. Regular dental check-ups can help identify and treat tooth decay before it progresses and affects the crown.

The average cost of treating tooth decay ranges from $90 to $300 per cavity, depending on the location and severity.

3. Grinding or clenching

Grinding or clenching the teeth, known as bruxism, can exert excessive force on dental crowns, leading to fracture or dislodgement. Individuals who grind their teeth should consider wearing a nightguard to protect both natural teeth and dental restorations.

The average cost of a nightguard ranges from $300 to $1,000.

4. Insufficient tooth structure

For dental crowns to be successful, there must be enough tooth structure to support them. In cases where there is significant tooth damage or decay, a dental crown may not be a viable option. In such instances, alternative treatments like dental implants or bridges may be recommended.

5. Improper fit

Ensuring the crown's proper fit is crucial for its long-term success. If a crown is not accurately fitted or if there is a misalignment in the bite, it can cause discomfort, sensitivity, and compromise the integrity of the crown. Dentists need to carefully assess and adjust the fit during the crown placement process.

6. Allergic reactions

In rare cases, individuals may experience allergic reactions to the materials used in dental crowns. Typical symptoms include gum inflammation, oral sores, or general discomfort. It is crucial to communicate any known allergies or sensitivities to the dental professional prior to crown placement.

7. Tooth fracture

While dental crowns are designed to protect damaged teeth, they cannot prevent fractures in all instances. Biting down on hard objects or sustaining trauma to the mouth can result in a fractured tooth and subsequent crown failure.

8. Age and wear

With time, dental crowns can experience wear and tear. The lifespan of a crown depends on various factors such as the material used, oral hygiene practices, and individual habits. On average, dental crowns can last between 10-15 years, but they may need replacement or repair sooner if signs of deterioration or damage are evident.

9. Poor crown quality

The quality of the dental crown materials and the skill of the dental professional play a significant role in the long-term success of the restoration. Opting for reputable dental labs and experienced dentists can minimize the likelihood of crown failure due to poor quality.

10. Unresolved bite issues

If a patient has unresolved bite issues, such as malocclusion or misaligned teeth, it can exert excessive pressure on specific areas, leading to crown failure. Dentists may need to address bite issues through orthodontic treatment or other appropriate measures before placing dental crowns.

Frequently Asked Questions

1. Can a dental crown be repaired?

In some cases, a dental crown can be repaired if the damage is minor. However, extensive damage may require a full replacement. Consulting with a dental professional is necessary to assess the extent of damage and determine the appropriate course of action.

2. How much does a dental crown cost?

The cost of a dental crown can vary based on various factors, including location, material used, and the complexity of the case. On average, the cost of a dental crown can range from $800 to $2,500 per tooth.

3. How long does the process of getting a dental crown take?

The process of getting a dental crown typically involves two appointments. During the first appointment, the dentist prepares the tooth, takes impressions, and places a temporary crown. The impressions are then sent to a dental lab to fabricate the permanent crown. The second appointment involves removing the temporary crown and cementing the permanent crown, aligning it with the patient's bite. The entire process usually takes around two to three weeks.