ĐÁNH GIÁ KẾT QUẢ ĐIỀU TRỊ RĂNG VIÊM QUANH CHÓP MẠN TÍNH BẰNG PHƯƠNG PHÁP HÀN MONOBLOCK MTA

Abstract

Background: Chronic apical periodontitis is a common disease. Treatment of this disease is complex. Nowadays, many new materials have been used in endodontic treatment, one of them is MTA. We conducted this research to evaluate the effectiveness of treatment the patients with chronic apical periodontitis using monoblock MTA obturation technique. Objectives: To evaluate the effectiveness of treatment the patients with chronic apical periodontitis using monoblock MTA obturation technique at the School of Dentistry, Hanoi Medical University and Hanoi Medical University Hospital from May 2021 to July 2022. Materials and methods: This retrospective study evaluated 73 teeth with chronic apical periodontitis at two time points: T1 (before treatment), T2 (after treatment). These teeth are divided into 2 groups depending on the diameter of periapical lesion on X-rays: group 1 (d ≤ 0.05mm) and group 2 (5mm < d ≤ 10mm). These teeth were obturated by monoblock MTA technique and evaluated clinical and radiological features after treatment. Results: 1 week after root canal treatment, the good result rate reached 91.8% (Group 1 = 91.9%, Group 2 = 91.7%). 3 months after treatment, the good result rate reached 92.5% (Group 1 = 94.1%, group 2 = 90.9%). There was 1 case of poor results, accounting for 1.5%. 6-9 months after treatment, the good result rate reached 94% (group 1 = 94.7%, group 2 = 93.5%). At 6-9 months after treatment, successful rate according to periapical lesion boundaries showed that teeth have unclear boundaries reached 100%, higher than the group with clear boundaries (91.4%). However, the difference was not significantly significant. Size of lesions at 3 months after treatment decreased compared to this before treatment and 6-9 months after treatment decreased compared to 3 months after treatment, significantly significant, p<0.01 (T-test). Conclusion: In group 1, the good result rate at 1 week, 3 months and 6-9 months after treatment were 91.9%, 94.1% and 94%, respectively. In group 2, the good result rate reached 91.7%, 90.9% and 93.5%, respectively. Therefore, in group 1, the good result rate was higher at all time point than in group 2. The size of periapical lesions at 3 months and 6-9 months after treatment compared to this before treatment decreased, statistically significant with p<0.01 (T-test).