title: Long-term survival of root-canal-treated teeth: a retrospective study over 10 years.
abstract: In this retrospective study the survival rate of 190 root-canal-treated teeth of 144 patients after 10-yr minimum was evaluated. Students during their training in 1987 and 1988 had performed the treatments. Age, gender, jaw, or quantity of root canals had no influence to the success of a root-canal treatment. Teeth with an apical lesion before the endodontic treatment showed a significantly shorter likelihood of survival. The best results could be found in root-canal fillings ending 0 to 1 mm and 1 to 2 mm before the apex. Comparing types of restoration, prosthetic-treated teeth with retention post and crown seem to be favorable. The study showed that root-canal treatment even conducted by students has a survival rate of 85.1% (Kaplan-Meier) after 10 yr and is a long-lasting, conservative therapy.
authors: Poliklinik für Zahnerhaltung, Westfälische Wilhelms-Universität, Münster, Germany.
authors: Till
authors: T
authors: Dammaschke
authors: Doris
authors: D
authors: Steven
authors: Markus
authors: M
authors: Kaup
authors: Klaus Heinrich Reiner
authors: KH
authors: Ott
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010483:Periapical Diseases; D011176:Post and Core Technique; D012189:Retrospective Studies; D012390:Root Canal Therapy / Q000706:statistics & numerical data*; D016019:Survival Analysis; D016896:Treatment Outcome