Over time our teeth can begin to weaken and become more susceptible to problems such as decay, cracks, tooth fractures and discoloration.Teeth that already have large old silver filling or composite fillings are especially suseptable to these problems. If you feel your smile isn’t what it once was, crowns can help you recover your smile. If your dentist notices that a tooth is decayed or seems weakened/cracked a crown may be necessary to ensure that there are no additional problems with the tooth, such as tooth fracture or potentailly needing a root canal if the problem worsens . In cases like this a filling or bonding will not be sufficient.