Dental bonding is a mainly cosmetic procedure. It is painless and includes the repair of a chipped or broken tooth and the closing of small spaces between teeth. Some insurers cover part of the costs of the bonding but don't expect to find it included in most policies. Since it is a cosmetic procedure, this coverage is not usually offered. However, if a broken tooth threatens to split all the way to your gums and affect your health, it may be covered for this reason.