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International Poster Journal of Dentistry and Oral Medicine
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Int Poster J Dent Oral Med 9 (2007), No. 3     15. Sep. 2007
Int Poster J Dent Oral Med 9 (2007), No. 3  (15.09.2007)

Poster 377, Language: English


Success of tunnel preparations in molars with class III furcation involvement
Kaltschmitt, Jens/Dannewitz, Bettina/Eickholz, Peter
Objective: Retrospective evaluation of success after tunnel preparation of class III furcation molars.
Methods: In 41 patients (29 female, mean age 54.8±10.8 years) tunnel preparations were rendered to a total of 56 molars from 1992-2000. Before and 1 to 13 years after therapy examinations took place. A multilevel regression analysis was used to identify factors influencing the survival time of tunnel preparations: sex, jaw (maxilla/mandible), molar type (1st/2nd molar), smoking, participation in supportive periodontal therapy (SPT).
Results: Six tunnel preparations were performed in the maxilla, 50 in the mandible. Forty tunnel preparations were done at 1st, 15 at 2nd, and 1 at 3rd molars. Eight tunnel preparations were lost during the observation period: 7 in the mandible. For the lost tunnel preparations a mean survival time of 40.8±18.6 months was observed. For those tunnel preparations that were still in function a mean survival time of 53.1±22.9 months was calculated. Multilevel regression analysis identified frequent SPT as positive (p = 0.08) and smoking (p = 0.08) as negative prognostic factors for tunnel survival.
Conclusion: After an observation period of 50.7±22.6 months 48 of 56 tunnel preparations were still in function (86%).

Keywords: furcation involvement, resective therapie, long-term results

Conference/Exhibition:
29.06.2006 - 01.07.2006
Europerio 5
Madrid