“Can crowns cause gum disease?”

Yes, if it is open contact, or if it is open margins, or if it is affecting biological width.

Only if they are poorly fabricated, or you have an allergy to nickel.

Crowns don't cause gum disease.

No, bacteria is the cause of gum disease. However, if crowns don't fit properly, leave spaces, are buried below the gum line too close to bone or are improperly contoured they can promote gum problems including gum disease.

No

No.

Dr. Laurentis Barnett

Poorly fitting or poor anatomy of a crown can contribute and even be the cause of gum disease.

Kenneth A. Ingber, D.M.D.

Not sure if your question arises from having crowns already and having gum disease diagnosed, but well-fitting crowns do not cause gum disease. Gum disease typically occurs when the immune system reacts to excess bacteria present around the teeth, which can be aggravated by ill-fitting crowns, but a well-executed crown does not cause it.

No, crowns don’t cause gum disease. Poor fitting crowns can make good oral care harder as food can get trapped. Gum disease is an infection of the tissues that hold your teeth in place. The typical causes of gum disease are generally poor oral hygiene including lack of brushing or ineffective brushing and flossing habits that allow plaque, a sticky film of bacteria, to build up on the teeth and become hard. As the disease advances, gums are sore, bleeding, and eventually lead to tooth loss.

Diane

Good question! If your tooth is broken down enough to require a crown, then a crown may be the most conservative treatment.
First, the contours of a crown are very important. They must be anatomically correct in that they mimic what nature has provided. That is, a crown that has slender contours with well fitting margins and snug contacts with adjacent teeth will contribute to good gum health. However, if a crown is bulky at the gumline, the gum tissue can become irritated and puffy. Analogy would be like a stretched rubber band will weaken & finally break. Second, if margins are not well sealed, then "leakage" in time occurs around the gumline, contributing to inflammation of the gum and eventually the bone, as well as re-decay of the tooth beneath the crown. Third, if the contacts between teeth are not snug, thereby, allowing food to trap between teeth regularly, we have another irritant to gum and bone fibers, even if you are a diligent flosser. Those factors plus plaque can cause gum disease. So design and structure are important, as well as, fourth, the balance of your bite. A faulty bite can exacerbate gum or bone breakdown.
Contrarily, if your crown has slender contours, well fitted margins, snug contacts between adjacent teeth, and properly balanced bite, good hygiene to effectively remove plaque daily, your crown and gum and bone support can remain healthy and free of disease. Pending your good home dental care and regular visits to the hygienist and annual Dr. exams your crown can last for many, many years with excellent gum and bone tissue health.

No

Short answer is no, it shouldn’t. But if the crown margins are short or open, it was made too bulky and it can irritate the gum tissue and cause it to bleed.