The outcome of teeth with periapical periodontitis treated with nonsurgical endodontic treatment: A computerized morphometric study

Objectives: This study investigated the prognosis for successful endodontic treatment and the correlation between the size of the periapical lesion, t he quality of the root canal treatment, and the type of coronal restoration . Method and materials: Periapical radiographs of 319 teeth with periapical periodontitis were studied. The area of each lesion was measured before tr eatment and 1 to 12 years after completion of the endodontic treatment. The measurements were performed using computerized morphometry. Results: In 65 .2% of the teeth, the size of the lesion decreased, while in 34.8% of teeth , there was an increase. Lesions larger than 10 mm(2) had a greater tendenc y for healing. Conclusion: No significant correlation was found between the quality of root canal treatment, the type of the coronal restoration, and the success rate of the endodontic treatment.