Análisis Tridimensional de Movimientos Mandibulares Bordeantes en Participantes Dentados Totales

Vargas-Agurto, Sofia A; Lezcano, María Florencia; Álvarez, Giannina; Navarro, Pablo; Fuentes, Ramón

doi:10.4067/s0717-95022020000400983

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…These variables have been analyzed with different devices to try to overcome certain problems that arise when recording mandibular movement, head movement, faithful tracking of mandibular movement and modifying the natural movement during chewing. Border movements have been analyzed using EMA in several studies [19,38], and a new variable has been introduced by analyzing border movements eccentrically and concentrically [46], as well as through symmetry analysis [84]. In addition, it has been made possible to analyze masticatory kinematics, differentiation of each cycle and its stage of ascent and descent in the area described [52].…”

Section: Discussionmentioning

confidence: 99%

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Chewing Analysis by Means of Electromagnetic Articulography: Current Developments and New Possibilities

Marinelli,

Venegas,

Alarcón

et al. 2023

Sensors

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Chewing is a complex procedure that involves sensory feedback and motor impulses controlled by the trigeminal system in the brainstem. The analysis of mandibular movement is a first approximation to understanding these mechanisms. Several recording methods have been tested to achieve this. Video, ultrasound, the use of external markers and kinesiographs are examples of recording systems used in research. Electromagnetic articulography is an alternative method to those previously mentioned. It consists of the use of electromagnetic fields and receiver coils. The receiver coils are placed on the points of interest and the 3D coordinates of movement are saved in binary files. In the Oral Physiology Laboratory of the Dental Sciences Research Center (Centro de Investigación en Ciencias Odontológicas—CICO), in the Faculty of Dentistry at the Universidad de La Frontera (Temuco, Chile) several research studies have been carried out using the AG501 3D EMA articulograph (Carstens Medizinelektronik, Lenglern, Germany). With this device, they developed a series of protocols to record mandibular movement and obtain new information, such as the 3D Posselt polygon, the area of each polygon, individualized masticatory cycles and speed and acceleration profiles. Other investigations have analyzed these parameters, but separately. The AG501 allows for holistic analysis of all these data without altering natural movement. A limitation of this technology is the interference generated by its metallic elements. The aim of the present work is to show the developed methods used to record mandibular movement in the CICO, using the AG501 and compare them with others used in several research studies.

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Section: Discussionmentioning

confidence: 99%

“…Based on this, the equipment determines the position of the coil within the measurement area [18]. The sensors are attached to the patient with tissue adhesive [19].…”

Section: Introductionmentioning

confidence: 99%

Chewing Analysis by Means of Electromagnetic Articulography: Current Developments and New Possibilities

Marinelli,

Venegas,

Alarcón

et al. 2023

Sensors

Self Cite

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“…With electromagnetic articulography, kinematic analysis of the mandibular movement is possible, rather than static parameters. Thus, the aforementioned parameters can be recorded, and the trajectory described by the mandible from the start to the end point of the movement can also be observed [ 38 , 39 ]. This can open new perspectives on the diagnosis of the state of the TMJ since the trajectory and the form of the path of the mandible when performing the opening movement can be incorporated, both to analyze the maximum opening and the openings performed while chewing.…”

Section: Discussionmentioning

confidence: 99%

A Novel Technique to Accurately Measure Mouth Opening Using 3D Electromagnetic Articulography

et al. 2022

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The mouth opening is an important indication of the functionality of the temporomandibular joint (TMJ). Mouth opening is usually evaluated by asking the patient to open their mouth as wide as possible and measuring the distance between the edges of the frontal incisors with a ruler or caliper. With the advancement of technology, new techniques have been proposed to record mandibular movement. The aim of this work is to present a novel technique based on 3D electromagnetic articulography and data postprocessing to analyze the mouth opening considering distances, trajectories, and angles. A maxilla-mandible phantom was used to simulate the mouth opening movement and fixed position mouth opening. This was recorded using the AG501 3D EMA (Carstens Medizinelektronik GmbH, Bovenden, Germany). The collected data was processed using Matlab (Mathworks, Natick, MA, USA). Fix and mobile mouth opening of 1, 2, 3 and 4 cm were simulated. It was possible to evaluate the mandibular opening through the vertical distance, the Euclidean distance, the trajectory, and the opening angle. All these values were calculated and the results were consistent with expectations. The trajectory was the highest value obtained while the vertical distance was the lowest. The angle increased as the mouth opening increased. This new technique opens up new possibilities in future research since oral opening can be analyzed using multiple variables without the need to use different devices or depending on the researcher’s experience. This will make it possible to establish which parameter presents significant differences between groups of patients or between patients who have undergone some treatment.

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“…A 3D electromagnetic articulograph (AG501; Carstens Medizinelektronik) was used to record mandibular border and functional movements. The recording protocol was based on that developed by Fuentes et al [8,20,21] and Vargas-Agurto et al [22]. The border movements recorded were based on those proposed by Okeson [7].…”

Section: Data Collectionmentioning

confidence: 99%

Characterization of Mandibular Border Movements and Mastication in Each Skeletal Class Using 3D Electromagnetic Articulography: A Preliminary Study

et al. 2023

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Mandibular movement recording is relevant for the planning and evaluation of mandibular function. These movements can include mandibular border movements (MBM) or mastication. Our objective was to characterize the kinematics of MBM and mastication among skeletal classes I, II, and III in the three spatial planes. A descriptive cross-sectional study was conducted with 30 participants. Instructions were provided on how to form Posselt’s envelope and to perform masticatory. After data processing, we obtained numerical values for the areas, trajectories, and ranges of MBM that formed Posselt’s envelope and the values for speed, masticatory frequency, and the areas of each masticatory cycle. Significant differences were found in the area of Posselt’s envelope in the horizontal plane between skeletal classes I and III and in the range of right laterality between skeletal classes II and III. Mastication showed significant differences in the area of the masticatory cycles in the horizontal plane between classes I and III and between classes II and III. In conclusion, there were differences in MBM and mastication between skeletal classes III and I in the horizontal plane. This study supports the need to establish normal values for mandibular kinematics in skeletal class III.

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Análisis Tridimensional de Movimientos Mandibulares Bordeantes en Participantes Dentados Totales

Cited by 6 publications

References 9 publications

Chewing Analysis by Means of Electromagnetic Articulography: Current Developments and New Possibilities

Chewing Analysis by Means of Electromagnetic Articulography: Current Developments and New Possibilities

A Novel Technique to Accurately Measure Mouth Opening Using 3D Electromagnetic Articulography

Characterization of Mandibular Border Movements and Mastication in Each Skeletal Class Using 3D Electromagnetic Articulography: A Preliminary Study

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