Introduction. Ocean trenches are natural tectonic plate boundaries between two crustal plates. When a continental plate converges with an oceanic plate a subduction zone forms. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench.
Surgical-Medical Policy this patient has with Arkansas Blue Cross and Blue Shield provides coverage for dental. treatment only in case of accidental injury and accident-related damage to teeth, and then as a rule only to sound. natural teeth. A sound natural tooth is a tooth that is whole, free of decay, periodontal disease or other conditions, and is not in need of treatment for any reason other than accidental injury. DIAGNOSTIC X-RAYS AND THIS COMPLETED FORM ARE REQUIRED TO DETERMINE A. CONSIDERATION OF PAYMENT.
Category: Dental Procedures. Tags: Dental Implants bridgework. When a natural tooth canât be preserved, it is important to have it replaced as soon as possible. Presently, there are two excellent tooth-replacement systems in wide use: traditional bridgework and high-tech dental implants. Whatâs the difference between the two methods? Essentially, it comes down to how the replacement tooth is secured in the mouth.