Crowns applied in aesthetic smile design protect the teeth by wrapping around them, because they are made in harmony with the gums. Especially in teeth with large fillings, this covers the entire tooth, protects it from external factors, and allows for much longer use than the filling alone.
Rather than weakening a tooth, a well-fitted veneer or crown shields it from the everyday forces, chewing, temperature change, minor knocks, that would otherwise wear down an already-compromised tooth faster.
As long as you keep up good tooth and gum care, brushing, flossing, and regular check-ups, the life of your aesthetic veneers will be long, and your natural tooth underneath stays protected rather than weakened.
