Silver crowns in a child’s mouth. Stainless steel crowns are the most common type of crown used in pediatric dentistry. These are what many people call “silver” crowns. These shiny silver crowns are very strong and durable and are a great option if you aren’t concerned about esthetics—or, in other words, good looks. On rare occasions they can cause localized tissue irritation and have been known to be a contributing factor in metal allergies.