When deciding on porcelain crowns, many patients struggle to choose between BioUltra a new generation of biocompatible aesthetic technology and conventional porcelain crown options that are popular on the market.
Each option has its own advantages and disadvantages, but to achieve long-term durability, natural color, and safety for the original tooth, understanding the differences between the two ceramic technologies is extremely important.
The article below helps you identify the solution that best matches your dental condition and aesthetic expectations.
Conventional porcelain crowns include two main types:
Porcelain-fused-to-metal crowns (with a titanium or alloy core, covered with porcelain).
All-ceramic crowns (Zirconia, E.max, Cercon, Lava, etc.).
Conventional metal-ceramic crowns have a strong internal framework that resists force well, but they can show a dark gum line and may cause irritation for patients with metal sensitivities.
All-ceramic crowns are made from a single block of ceramic without metal, offering a bright, natural shade and high biocompatibility with minimal risk of allergic reactions.
BioUltra porcelain crowns are a high-end bioceramic restoration solution featuring P+ molecular reinforcement, making them harder, more durable, and capable of withstanding strong chewing forces (over 1400 MPa).
A key advantage of BioUltra is the Preserve90 technique preparing only an ultra-thin layer and preserving up to 90% of the natural tooth structure, which minimizes sensitivity and invasiveness.
The surface also features a BioShield antibacterial layer that helps prevent gum inflammation and protects long-term oral health.
| Criteria | BioUltra Porcelain Crowns | Conventional Porcelain Crowns |
| Fabrication Technology | Uses digital 3D CAD/CAM workflow for extremely precise design and fabrication with a perfect fit to the natural tooth. | Uses traditional manual techniques: gypsum impressions and hand-cast molds, resulting in lower precision and aesthetics. |
| Tooth Preparation | Ultra-thin Preserve90 preparation, removing only the outermost layer, preserving up to 90% of the tooth structure with no sensitivity. | Requires more reduction to accommodate thicker metal or ceramic frameworks, which can weaken the natural tooth and cause sensitivity. |
| Durability & Strength | Very high strength (>1400 MPa), strong chewing resistance, difficult to fracture, long service life. | Metal crowns are strong but porcelain chips over time; conventional all-ceramic such as E.max is durable but better suited to anterior teeth. |
| Translucency | Natural, bright translucency like real enamel with excellent light reflection and no opacity. | E.max/Zirconia conventional crowns have good color; porcelain-fused-to-metal crowns may appear opaque with dark gum margins. |
| Tooth Preservation | Maximizes tooth conservation, keeps the original tooth strong, with no sensitivity and long-term stability. | Requires more reduction, weakening the natural tooth and potentially increasing sensitivity or reducing remaining tooth longevity. |
| Cost | Higher due to advanced technology and premium materials, but offers greater long-term value. | Lower by 20–30% (especially for metal-based or conventional brands). Imported all-ceramic options (E.max, German/Italian/US zirconia) may cost more, but still generally less than BioUltra. |
In summary, BioUltra porcelain crowns excel in precision, aesthetics, durability, and tooth preservation, while conventional crowns may be more suitable for those seeking a functional and budget-conscious solution.
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When the natural tooth is weak or sensitive: If the original tooth is significantly worn or has undergone root canal treatment, deep reduction can prolong sensitivity. BioUltra’s ultra-thin preparation (preserving ~90% of tooth structure) avoids pulp involvement and promotes stronger post-crown tooth health. Conventional crowns, especially metal-based ones, require more reduction and are less suitable for weak teeth.
When full-mouth restoration or aesthetic enhancement is needed: BioUltra stands out with uniformly bright, natural white shade and translucency due to advanced ceramic materials. For full-mouth cosmetic restorations or enhancing appearance, BioUltra ensures a uniformly bright, naturally radiant smile.
When there is a history of post-crown gum inflammation or bad breath: Many patients with metal crowns experience gum inflammation or halitosis due to bacterial buildup around the margins. BioUltra’s BioShield antibacterial surface inhibits bacteria that cause bad breath and gingival inflammation. As a result, gums stay healthy, pink, and easier to clean.
When long-lasting results with minimal need for rework are desired: BioUltra crowns are made from durable materials and a technique optimized for tooth preservation. Therefore, BioUltra crowns are very strong, resisting breakage or discoloration over time. Additionally, preserving more natural tooth structure reduces the risk of needing future re-restoration.
To learn more about BioUltra technology and the procedure at Smilux, see the next article: “What is BioUltra Bioceramic Crown Technology at Smilux?”
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