What should I do if the porcelain on my porcelain-fused-to-metal crown chips or flakes off?

Dec 24, 2024 Source: Cainiu Health

Dr. Liu Chao

Introduction

Periodontal disease is an inflammatory condition affecting the periodontal tissues. If left untreated, periodontal disease may lead to tooth mobility, gum recession, and other issues, thereby compromising the stability and strength of porcelain crowns. Under the influence of periodontal disease, porcelain crowns may be more susceptible to chipping or fracturing under external forces. Anti-inflammatory and analgesic medications such as metronidazole tablets, ibuprofen sustained-release capsules, and celecoxib capsules may be used as directed by a physician.

　　In general, chipping of porcelain-fused-to-metal (PFM) crowns may be caused by factors such as improper chewing habits, poor oral hygiene, inadequate tooth preparation, malocclusion, or periodontal disease. The solution must be selected according to the specific cause to achieve effective treatment. Prompt medical consultation is necessary, and treatment should follow medical advice. Details are as follows:

　　1. Improper chewing habits: Long-term use of PFM crowns to bite excessively hard foods, such as nuts or bones, or habitual use of teeth to open bottle caps, may subject the crown to excessive pressure, causing damage to the porcelain surface. Improve chewing habits and avoid biting excessively hard foods with the PFM crown.

　　2. Poor oral hygiene: Poor oral hygiene may lead to bacterial growth around the PFM crown, forming dental plaque and tartar. These bacteria and their metabolic byproducts may corrode the crown, reducing its strength and increasing the risk of chipping. Maintain good oral hygiene by brushing regularly, using dental floss and mouthwash.

　　3. Inadequate tooth preparation: Prior to PFM crown restoration, tooth preparation (removal of part of the tooth structure) is required to accommodate the crown. If the tooth preparation is inadequate, such as uneven or insufficient grinding, the crown may not have sufficient thickness, increasing the risk of chipping. Re-preparation of the tooth is necessary to ensure adequate thickness and strength of the crown. If chipping has already occurred, the crown should be removed and remade.

　　4. Malocclusion: Malocclusion may cause stress concentration on the PFM crown during mastication, making the porcelain surface more susceptible to damage. This may occur if high spots on the occlusal surface remain after cementation without adjustment. Adjust the occlusion of the PFM crown to eliminate high spots and ensure even force distribution. If chipping has occurred, repair or replacement of the crown is required.

　　5. Periodontal disease: Periodontal disease is an inflammatory condition affecting the supporting tissues of the teeth. If left untreated, it may lead to tooth mobility and gum recession, affecting the stability and strength of the PFM crown. Under the influence of periodontal disease, the crown may be more prone to chipping from external forces. Anti-inflammatory and analgesic medications such as metronidazole tablets, ibuprofen sustained-release capsules, and celecoxib capsules may be used as directed by a physician.

　　After restoration, maintain good oral hygiene, avoid biting hard objects that may damage the PFM crown, and schedule regular check-ups and maintenance.

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Which is better between porcelain-fused-to-metal crowns and dental implants, and what are the differences?

Under normal circumstances, both porcelain-fused-to-metal (PFM) crowns and dental implants are common methods for dental restoration. Both are effective but are suitable for different situations. The differences between the two lie in restoration principles, effects on adjacent teeth, comfort and functional recovery, lifespan, cost, and other aspects. When choosing between PFM crowns and dental implants, a comprehensive consideration of individual oral conditions, financial capacity, and other factors is recommended.

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What should I do if my porcelain crown falls off?

In general, if a porcelain crown becomes dislodged, the main management methods include seeking timely medical evaluation, cleaning the area, temporary fixation, remaking and re-cementing the crown, and proper follow-up care. Additionally, patients should follow their dentist's advice throughout the process, attend scheduled follow-up appointments, and seek prompt medical attention if they experience any abnormalities such as tooth pain, swelling, or loosening of the crown.

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How many years is the lifespan of a porcelain-fused-to-metal crown?

The lifespan of a porcelain crown typically ranges from 8 to 15 years, depending on factors such as the material used, daily care, and oral conditions. Proper maintenance can extend its longevity. In daily life, avoid biting hard objects with the porcelain crown, and maintain good oral hygiene by brushing teeth in the morning and evening and using dental floss regularly. Visit a dental clinic periodically for checkups to detect and address issues such as loosening or wear of the porcelain crown promptly.

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How to Handle Chipped Porcelain on a Porcelain-Fused-to-Metal Crown

Porcelain chipping in porcelain-fused-to-metal (PFM) crowns may be caused by prolonged use, material aging, excessive occlusal pressure, tooth wear, or external impact. In most cases, the issue can be resolved by replacing the crown, performing repairs, or implementing appropriate treatment based on the specific cause. If abnormalities occur, prompt medical attention is recommended. In daily life, it is important to protect the PFM crown by avoiding biting hard objects and maintaining proper chewing habits.