Can/does a prosthodontist install individual dental crowns and replacements when they wear out?

Definetely, By definition prosthodontists replace missing natural teeth with fixed or removable appliances, such as crowns, veneers, dentures, bridges, and implants. Prosthodontists receive three years of additional training and he/she is master of complete oral rehabilitation.
Crown replacement . Yes, prosthodontists and general dentists make recommendations to protect teeth with dental crowns or onlays and evaluate them with time whether they need replacement because they may leak /develop recurrent caries or open margins occur. Then they may recommend replacement. Discuss material used and technique. .