Anatomy of the pulp-chamber floor.

Locating the number and position of orifices on pulp-chamber floors can be difficult. This is especially true when the tooth being treated is heavily restored, malposed, or calcified. After evaluating 500 pulp chambers of extracted teeth, new laws for finding pulp chambers and root-canal orifices are proposed.

Accessory branch of the mental nerve.

This case report presents a surgical case in which an accessory branch of the mental nerve exited the mandible distal and slightly superior to the mental foramen. Careful manipulation of the surgical site allowed proper identification of the mental nerve, and the accessory branch and permanent nerve damage was avoided.

Endodontic applications of guided tissue regeneration in endodontic surgery.

This paper is intended to provide an overview of different endodontic applications in guided tissue regeneration. It is our expectation that using these techniques, where applicable, will increase endodontic surgical success. We have described six different clinical conditions including external resorption, root perforation, dehiscence, palatal grooves, oblique root fractures, and large periapical lesions.

Endodontic applications of guided tissue regeneration in endodontic surgery.

There are several possible causes of failure following nonsurgical and surgical endodontic treatments. Many of the causes of these failures can be attributed to the presence of endodontic-periodontic bone loss around roots. The development of guided-tissue regeneration (GTR) procedures in periodontal therapy has let to the successful treatment of some types of periodontal bone loss.

New philosophy for the treatment of avulsed teeth.

The success rate of replanted avulsed teeth has been low. This poor success rate results from the use of only one treatment regimen. This treatment regimen, replantation as quickly as possible regardless of circumstances, ignores much of the dental research that shows this regimen to not be efficacious.