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The root canal filling material (3, 4, and 10) does not extend to the end of the tooth roots (5, 6 and 11). The dark circles at the bottom of the tooth roots (7 and 8) indicated infection in the surrounding bone. Recommended treatment is either to redo the root canal therapy or extract the tooth and place dental implants.
The post does not play any role in reinforcing or supporting the tooth and can in fact make it more likely to fracture at the root. [ 3 ] When deciding whether or not a tooth requires a post and core crown rather than a conventional crown, the following must be established: [ 4 ]
A root canal is the naturally occurring anatomic space within the root of a tooth.It consists of the pulp chamber (within the coronal part of the tooth), the main canal(s), and more intricate anatomical branches that may connect the root canals to each other or to the surface of the root.
Based on the most common causes of toothache (dentin hypersensitivity, periodontitis, and pulpitis), the key indicators become localization of the pain (whether the pain is perceived as originating in a specific tooth), thermal sensitivity, pain on biting, spontaneity of the pain, and factors that make the pain worse.
Tooth #5, the upper right second premolar, after extraction. The two single-headed arrows point to the CEJ, which is the line separating the crown (in this case, heavily decayed) and the roots. The double headed arrow (bottom right) shows the extent of the abscess that surrounds the apex of the palatal root.
For decayed adult (permanent) teeth, partial removal (also referred to as "selective removal" [5]) of decay before filling the tooth, or adding a second stage to this treatment where more decay is removed after several months, may be better than conventional treatment. [7]
A periapical radiograph is usually the radiograph of choice. When examining the tooth which will receive surgery, the quality of the root treatment and canal anatomy (sclerosed or missed canals) is noted. More than one radiograph may be required to indicate possible treatment success. The root filling should be optimal.
Supernumerary roots is a condition found in teeth when there may be a larger number of roots than expected. The most common teeth affected are mandibular (lower) canines, premolars, and molars, especially third molars. Canines and most premolars, except for maxillary (upper) first premolars, usually have one root.