The Complete Guide to Dental Crowns in Blackpool
A dental crown is a tooth-shaped cap that fits over the entire visible surface of a damaged, weakened or heavily restored tooth, restoring it to full strength, function and natural appearance. Crowns are one of the most reliable and durable restorations in dentistry — a well-made crown on a healthy root can last 15–25 years — and they are frequently the most appropriate solution when a tooth has been compromised beyond what a filling can adequately restore.
At Tower Dental Blackpool, we use digital impression technology (no traditional putty impressions) and work with specialist dental ceramicists to produce crowns that are precisely matched to the adjacent teeth in colour, translucency and surface texture. Every crown is tried in before final cementation to confirm the fit, shade and bite — you see the result before it is permanently placed, and any adjustments can be made at that stage.
When Is a Crown Actually Necessary — and When Is It Not?
One of the most important questions any dental patient can ask is: "Does this tooth actually need a crown, or would a large filling achieve the same result?" The honest answer requires clinical judgment based on examination and radiographs — but here are the situations where a crown is genuinely indicated:
After root canal treatment. A tooth that has undergone root canal treatment has had its nerve and blood supply removed. This makes the tooth more brittle and prone to fracture under biting forces — particularly posterior (back) teeth that bear significant occlusal load. A crown placed over a root-treated molar or premolar distributes biting forces across the entire tooth surface rather than concentrating them, dramatically reducing the fracture risk. Teeth that have had root canal treatment without crown protection fail at a much higher rate over time than those that are crowned.
Teeth with large existing fillings. When more than 50–60% of a tooth's crown has been filled or restored, the remaining tooth structure is insufficient to support another filling without risk of the tooth fracturing around it. A crown effectively becomes the new outer wall of the tooth, taking the structural load that the natural enamel and dentine can no longer provide.
Cracked teeth. A tooth with a fracture that extends below the gum line requires either a crown to hold the two halves together and prevent the crack from propagating, or extraction. The sooner a cracked tooth is identified and crowned, the better the outcome — cracks that extend to the root cannot be saved.
Severely worn teeth. Patients who grind their teeth (bruxism) or have acid erosion from dietary or medical causes can wear their teeth to the point where significant height has been lost. Crowns rebuild the lost tooth height and restore the bite.
A crown is less likely to be indicated when: the tooth has a straightforward cavity that a filling can address without structural compromise, or when cosmetic change alone is the goal and veneers would be less invasive.
Crown Materials — Choosing the Right One for Your Tooth
Full porcelain / all-ceramic crowns are the most aesthetically natural option and the standard of care for front teeth. Modern ceramic materials (eMax pressable ceramic, zirconia) are strong enough for back teeth in most patients. They contain no metal, eliminating the dark line at the gum margin that older metal-ceramic crowns develop over time as gum recession reveals the metal collar. At Tower Dental, we use eMax and zirconia as our standard crown materials.
Porcelain-bonded-to-metal (PBM/PBC) crowns have a metal substructure for strength with a porcelain overlay for aesthetics. They are more robust under very heavy biting forces and are indicated where the patient has very limited space between upper and lower teeth (deep bite) or where extreme clenching would risk fracturing a full ceramic crown. The trade-off is the metal collar and slightly less natural translucency.
Full gold crowns are rarely chosen for aesthetic reasons but have unsurpassed clinical longevity. A gold crown placed on a molar can last 30–40 years. For patients with extreme bruxism, particularly on posterior teeth that will not be visible, gold remains the most durable option. Dr Metias will discuss the specific indications and trade-offs of each material at your consultation.
Crown Longevity and What Determines It
A dental crown should last 15–25 years when the underlying root is healthy and the patient maintains good oral hygiene. The most common causes of early crown failure are: decay developing at the margin between the crown and the tooth (recurrent decay), fracture of the crown material due to heavy biting forces or grinding, and loss of cement seal causing the crown to debond.
Regular dental check-ups are essential for monitoring crown integrity — X-rays at appropriate intervals allow us to identify developing decay at crown margins before it becomes symptomatic. Hygienist appointments maintain gum health around the crown margins, preventing the gum recession that exposes the cement line to bacterial colonisation. A custom night guard for patients who grind is the most effective intervention for extending crown lifespan in bruxists.
When a crown eventually needs replacement — through decay, fracture, or simply reaching the end of its lifespan — the process is essentially the same as the original crown procedure. The root is reassessed, a new impression is taken, and a new crown is fabricated. The underlying tooth structure has minimal change from the original preparation in most cases.
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