Can porcelain-fused-to-metal crowns cause gum recession?

Oct 16, 2025 Source: Cainiu Health

Dr. Liu Chao

Introduction

If there are problems with the fabrication of a porcelain-fused-to-metal crown—such as excessively long or uneven crown margins that irritate the gums, or abnormal crown shape that leads to food impaction—poor long-term oral hygiene may trigger gingivitis. Persistent inflammation can damage gum tissue and eventually lead to gingival recession. Additionally, some patients may be allergic to the metal substructure of the crown, which could also cause gingival inflammation and recession.

Properly fabricated and well-maintained porcelain-fused-to-metal (PFM) crowns generally do not cause gingival recession. However, if the crown is poorly made, oral hygiene is inadequate, or the materials cause irritation, gingival recession may occur.

If the PFM crown is properly fabricated—with precise marginal fit along the tooth root, natural contour matching adjacent teeth—and the dentist avoids damaging the gum tissue during placement, the gums can remain healthy and typically won't recede, allowing the crown to function normally for many years—provided the patient maintains good oral hygiene after the procedure.

However, if the PFM crown is improperly made—for example, if the margin extends too far or is uneven and irritates the gums, or if the crown's shape causes food impaction—poor long-term cleaning can lead to gingivitis. Persistent inflammation may damage gum tissue and eventually result in gingival recession. Additionally, some patients may be allergic to the metal substructure of the PFM crown, which could also trigger gum inflammation and recession.

In daily care, it is important to clean around the PFM crown and gumline thoroughly every day using a soft-bristled toothbrush and dental floss, and regularly use a water flosser to remove debris from tight spaces. Dental check-ups every six months to one year are recommended to detect and correct any issues with the crown early. Avoid chewing excessively hard foods with the crowned tooth to prevent crown damage or gum irritation.

View All

Are there any side effects of dental implants?

Dental implants involve surgically placing artificial teeth into the missing areas, with a cost of approximately 5,000 to 10,000 yuan per tooth. However, dental implants may cause side effects such as bleeding, infection, occlusion problems, gum recession, and nerve damage. The specific side effects vary from person to person. To reduce the risks, it is recommended to choose a reputable and professional hospital and to be guided by a qualified dentist.

View Full Answer

Will gum recession continue to progress?

If gingival recession is caused by factors such as periodontitis, long-term improper brushing techniques, or malaligned teeth and remains untreated, the inflammation will continuously destroy the gums and alveolar bone, leading to further gum recession and increased exposure of tooth roots. This may also be accompanied by problems such as tooth mobility and sensitivity, creating a vicious cycle that progressively worsens the recession.

View Full Answer

Can tooth brushing cause gum recession?

In general, whether tooth brushing causes gum recession depends on the brushing technique. Brushing teeth properly usually does not lead to gum recession, but improper brushing techniques may cause it. To prevent gum recession, it is important to choose a soft-bristled toothbrush, learn and consistently use the correct brushing method, control brushing pressure, and avoid overzealous cleaning.

View Full Answer

Can receding gums recover?

Gingival recession is generally difficult to completely cure, but its progression can be controlled and symptoms improved through treatment. In daily life, it's important to use a soft-bristled toothbrush and the Bass brushing technique, avoiding aggressive brushing that may damage the gums. Rinse your mouth promptly after meals, and use dental floss or interdental brushes to clean between teeth, reducing the buildup of food debris.