China
Africa
Explore chapters and articles related to this topic
3D Nanoprinting in Oral Health Care Applications
Published in Ajit Behera, Tuan Anh Nguyen, Ram K. Gupta, Smart 3D Nanoprinting, 2023
Gaetano Isola, Alessandro Polizzi, Simona Santonocito
3D-printed brackets and appliances. A new objective in orthodontic treatment is to reduce the number of appointments and to reduce dental complications related to orthodontic treatment, such as enamel demineralization and root resorption [113]. In this regard, it is possible to produce 3D-printed brackets through a digital tooth movement planning to obtain during brackets manufacturing adjustments personalized for the patient in terms of material selection, angulation, and bending [114,115]. Some authors showed an excellent intraoral fit of 3D-printed appliances, such as sleep apnea appliances, Andresen and Herbst [116,117]. However, further investigations must be conducted to support the clinical use of 3D-printed brackets and appliances [71].
Conebeam CT for Medical Imaging and Image-Guided Interventions
Published in Salim Reza, Krzysztof Iniewski, Semiconductor Radiation Detectors, 2017
CBCT imaging is a practical tool in detecting periapical lesions and viewing root fractures because of its high spatial resolution. The 3D scanning of a tooth allows for accurately measuring the depth of dentin fracture. Moreover, CBCT is also used presurgically to determine the proximity of a tooth to adjacent vital structures, execute precise measurement, and identify the anatomy of the area. When applied in diagnosing periapical lesions, CBCT imaging also has the ability of early detection of inflammatory root resorption that is almost impossible in conventional 2D radiographs.
Investigation of effective intrusion and extrusion force for maxillary canine using finite element analysis
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2019
Jianlei Wu, Yunfeng Liu, Dongcai Wang, Jianxing Zhang, Xingtao Dong, Xianfeng Jiang, Xu Xu
Whether an orthodontic force is reasonable mainly depends on two aspects: (1) amount of root resorption during tooth movement and (2) orthodontic treatment duration (Wu et al. 2018). Small or local root resorption is ineluctable in orthodontics, it is due to multi-factors, while excessive force is the main factor (Seres et al. 2017); root resorption gradually results in tooth separation from the periodontal tissue, decreases the masticatory ability of the tooth or even delays tooth exfoliation with time (Giovanpaolo et al. 2017). Therefore, substantial root resorption is undesirable in orthodontic treatment. Root resorption possibility can be significantly reduced with less force, but a small orthodontic force cannot effectively stimulate alveolar bone remodelling (Aguiar et al. 2017); it will decrease the tooth moving efficiency, leading to extended treatment duration. Hence, an ideal orthodontic treatment is wherein root resorption during treatment is less and tooth moving efficiency is high.
Prevention and repair of orthodontically induced root resorption using ultrasound: a scoping review
Published in Expert Review of Medical Devices, 2023
Mahmoud Sedky Adly, Afnan Sedky Adly, Richard Younes, Marwan El Helou, Ivan Panayotov, Frederic Cuisinier, Delphine Carayon, Elias Estephan
Root resorption of permanent teeth is considered as a pathological, asymptomatic, and iatrogenic consequence of orthodontic treatment. Aggressive orthodontic tooth movement has been commonly associated with severe root resorption. Unfortunately, the radiographic changes are not observed until the condition becomes irreversible [1]. Therapies available for repairing and preventing root resorption are very limited and have not been justified in orthodontic applications due to their systemic effects. Some of the treatment options include the use of biological systems and filling materials for restoring the defects [2,3]. However, most of therapeutic techniques have poor prognosis in advanced conditions [4,5].
An analysis of the optimal intrusion force of the maxillary central incisor with root horizontal resorption using the finite element method and curve fitting
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2022
Xin Zhang, Min-Qi Li, Jie Guo, Heng-Wei Yang, Jian Yu, Guo-Ju Li
Root resorption (RR) is described as a permanent loss of tooth structure from the root apex. It is a progressive loss of dentine and cementum by the action of osteoclasts (Dindaroglu and Dogan 2017). The cause of resorption is not clear, but various theories have been suggested. It has been reported that genetic factors, age, and sex may affect the incidence of resorption. Factors such as root morphology, length, heredity, age, direction, magnitude, and duration of orthodontic force are responsible for RR (Casa et al. 2001; Lopatiene and Dumbravaite 2008; Artun et al. 2009; Seres et al. 2017).