Clinical ResearchLong-Term Prognosis of Endodontically Treated Teeth: A Retrospective Analysis of Preoperative Factors in Molars
Section snippets
Materials and Methods
The clinical database of the University of Pennsylvania School of Dental Medicine was searched for patients with a history of molar endodontic treatment performed between 1999 and 2005, subsequent permanent crown restoration, and a minimum of a 4-year follow-up in the form of a full-mouth series of radiographs was performed. Forty-two charts with 50 individual teeth that had matching criteria were randomly selected.
With the variables’ abbreviation in parenthesis, the following data were
Results
The mean follow-up period from endodontic treatment to the control full mouth series was 5.4 years. The patients’ age ranged from 19 to 87 years. Out of all patients, 22 were male and 20 female. Of all teeth, 48 (96.0%) were retained at follow-up. Of those, 44 (88.0%) had no untoward event, and 2 (4.0%) each underwent surgical or nonsurgical retreatment. Two teeth (4.0%) had been extracted. At start (AP start), 18 teeth had apical periodontitis (36.0%). Of these, five lesions healed completely,
Discussion
This study attempts to isolate and define preoperative parameters for the long-term prognosis of endodontically treated molars. The long-term predictability of any tooth undergoing dental treatment has been subject to debate. Depending on whether the outcome assessment was periodontic, endodontic, or restorative in nature, different parameters were investigated. Most endodontic treatment prognosis studies investigated success and failure based on the endodontic status of the tooth depending on
Conclusion
Within the limitations of this study, it may be concluded that, for endodontically treated molars, certain preoperative periodontal conditions are reliable indicators for the long-term clinical outcome in terms of the necessity of extraction or retreatment. An enlarged patient pool will be needed to define predictive criteria for the long-term-prognosis of endodontically treated teeth. The current model appears to be valid for the evaluation of retrospective data to find ad hoc information;
Acknowledgment
We would like to thank Elaine Bellucci, Statistician, Murrietta, CA, for the conduction of the statistical analyses presented in this review.
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