Orthodontically Induced Root Resorption In Endodontically Treated And Vital Teeth

This study compares the degree of Orthodontically induced root resorption (OIRR) between root-filled teeth (RFT) and vital pulp teeth (VPT), and analyzes relevant study variables. This study, approved by the relevant Ethics Committee, retrospectively analyzed 69 adult patients who had undergone orthodontic treatment. Using Cone-beam computed tomography (CBCT) and three-dimensional (3D) image registration, we measured root length changes and considered factors like gender, treatment type, tooth type, age, treatment duration, and root movement distance related to the OIRR. On the basis that there was no significant difference in the root movement distance between RFT and VPT, RFT showed significantly less OIRR than VPT (P<0.05). Gender, age, tooth type and tooth position didn’t significantly affect OIRR for either RFT or VPT group (P>0.05). The extraction group had more OIRR than the non-extraction group in RFT (P<0.05), but not in VPT (P>0.05), and fixed appliance cases had higher OIRR in both groups than clear aligners (P<0.05), and treatment duration showed positive correlations with OIRR (RFT: r=0.5506, P<0.0001; VPT: r=0.4371, P=0.0002), so did root movement distance (RFT: r=0.2955, P=0.0140; VPT: r=0.2790, P=0.0206). RFT exhibit significantly less OIRR than VPT after orthodontic treatment. Treatment type, appliance type, treatment duration and root movement distance are significant factors influencing OIRR. Personalized orthodontic treatment plans and vigilant monitoring are crucial to mitigate OIRR risks.