Marinelli Franco, Venegas Camila, Ruiz Joaquin Victorio, Farfán-Beltrán Nicole, Staub Erwin, Navarro Pablo, Alarcón-Apablaza Josefa, Fuentes Ramón
Research Centre in Dental Sciences (CICO-UFRO), Dental School, Facultad de Odontología, Universidad de La Frontera, Temuco 4780000, Chile.
Institute for Research and Development in Bioengineering and Bioinformatics (IBB), CONICET-UNER, Oro Verde E3100, Argentina.
Bioengineering (Basel). 2024 Feb 28;11(3):229. doi: 10.3390/bioengineering11030229.
Edentulism can generate negative impacts on self-esteem, interpersonal relationships, and oral functions. Removable prostheses are commonly used for tooth replacement, but they may cause discomfort due to micromovements during mastication. Objective and quantifiable methods are needed to evaluate these micromovements. A pilot study was conducted to determine the micromovements in removable prostheses during mastication using a 3D electromagnetic articulography (EMA-3D) system. One elderly participant wearing lower removable prostheses and an upper total well-fitting removable prosthesis was studied. The EMA-3D system was used to record movements in three spatial planes. Peanuts were given as test food, and the participant was instructed to chew normally while recordings were carried out until feeling the need to swallow. Analyses of the upper total prosthesis show micromovements ranging from 0.63 ± 0.11 to 1.02 ± 0.13 mm. During simultaneous analyses of the upper prosthesis and lower partial prosthesis, interference was not observed. This pilot study demonstrated the feasibility of using the EMA-3D system to evaluate micromovements in removable prostheses during mastication. Further research is needed to evaluate a larger sample and assess the clinical implications of these micromovements.
无牙颌会对自尊、人际关系和口腔功能产生负面影响。可摘局部义齿是常用的牙齿替代方式，但在咀嚼过程中可能会因微小移动而导致不适。需要客观且可量化的方法来评估这些微小移动。进行了一项初步研究，使用三维电磁关节造影（EMA - 3D）系统来确定可摘局部义齿在咀嚼过程中的微小移动。研究了一名佩戴下颌可摘局部义齿和上颌全口贴合可摘局部义齿的老年参与者。EMA - 3D系统用于记录三个空间平面的运动。使用花生作为测试食物，并指示参与者在进行记录时正常咀嚼，直到感觉需要吞咽。对上颌全口义齿的分析显示微小移动范围为0.63±0.11至1.02±0.13毫米。在上颌义齿和下颌局部义齿同时分析过程中，未观察到干扰。这项初步研究证明了使用EMA - 3D系统评估可摘局部义齿在咀嚼过程中微小移动的可行性。需要进一步研究以评估更大的样本并评估这些微小移动的临床意义。
