Development of 3-D Motion Display System to Assist Diagnostic Treatment of Occlusal Disorder (Contact State Analysis of Upper and Lower Teeth with Patient-Specific Hybrid Model)

Saitou, Kiwamu; Kimura, Hitoshi; Inou, Norio; Fujikawa, Tomoki; Takeuchi, Y; Maki, Koutaro

doi:10.1299/kikaic.79.4121

Cited by 2 publications

(4 citation statements)

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“…This shows the procedure up until the display of individualsʼ jaw movement. This was obtained from the coauthorʼs manuscripts [11][12][13] .…”

Section: Methodsmentioning

confidence: 99%

“…Thus, this study aimed to devise a new method of examining in detail the interrelationships between maxillofacial morphology and stomatognathic functions during mastication, specifically regarding occlusal surface morphology and jaw movements. We used an analysis system that can make detailed observations of jaw movements in each patient [11][12][13] to assess jaw movement trajectories and occlusal contact status during mastication.…”

Section: Introductionmentioning

confidence: 99%

“…This shows the steps for creating a three-dimensional jawbone model. This was obtained from the coauthorʼs manuscripts[11][12][13] .…”

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confidence: 99%

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An advanced method of individual jaw movement analysis

Minemura

Takeuchi

Manome³

et al. 2022

Showa Univ J Med Sci

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The assessment of jaw movements is a common method of evaluating stomatognathic function. However, with conventional methods, detailed examination of the interrelationship between maxillofacial morphology, tooth morphology, and jaw movements is difficult. Therefore, we engineered a method of analyzing individual three-dimensional (3D) jaw movements along a time axis. This study included five adult patients with permanent dentition and no notable oral parafunctional habits who visited the orthodontic department of the Showa University Dental Hospital. We used a jaw movement analysis system to assess jaw movements during free mastication. We assessed the (1) movement trajectory of the main occluding area, (2) rate of change in the distance between the origin and the insertion of the masticatory muscles, and (3) contact patterns of the dentition. The results for (1) showed no interrelationships. For (2) , the origin and insertion of the lateral pterygoid muscle exhibited characteristic changes. The analysis of the contact pattern between the upper and lower dentition showed the contact of the molars posterior to the first premolar when masticating on the balancing side. These results indicate that jaw movements occur in a way that is appropriate for the maxillofacial morphology when food is crushed during mastication. Additionally, the occlusal contact and condylar movement during mastication may be more affected on the balancing side than on the working side. Thus, the jaw movement analysis system used in this study was useful for movement analysis during functional activity.

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“…This shows the procedure up until the display of individualsʼ jaw movement. This was obtained from the coauthorʼs manuscripts [11][12][13] .…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An advanced method of individual jaw movement analysis

Minemura

Takeuchi

Manome³

et al. 2022

Showa Univ J Med Sci

Self Cite

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“…137). Quando due superfici di smalto piane si affrontano, come per esempio le faccette di usura occlusali di due denti antagonisti, i bordi delle aree di usura mantengono la propria efficienza nel taglio solo se rimangono affilati; se i bordi si smussano, si avrà una riduzione dell'efficienza di taglio (Saito et al 2013).…”

Section: Modificazione Delle Vertebre Cervicaliunclassified

Origini, forma e (dis)funzioni dell’apparato masticatorio in Homo sapiens

Papini

2023

Studi E Saggi

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The anatomical-functional structure with which human beings are equipped today has its roots in our evolutionary history: knowing the latter helps us understand why our body looks like this and functions in this way. Every living being, including Homo sapiens, is the result of a progressive stratification of forms that have adapted to environmental pressures which have shaped their morphology from deep time until today. Our masticatory apparatus (evolutionarily very recent) began to develop with the advent of mammals around 250 million years ago, structuring itself with a unique morphology and function, closely linked to the upright posture typical of the Homo genus and to globular encephalisation, a characterizing peculiarity Homo sapiens.

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Development of 3-D Motion Display System to Assist Diagnostic Treatment of Occlusal Disorder (Contact State Analysis of Upper and Lower Teeth with Patient-Specific Hybrid Model)

Cited by 2 publications

References 1 publication

An advanced method of individual jaw movement analysis

An advanced method of individual jaw movement analysis

Origini, forma e (dis)funzioni dell’apparato masticatorio in Homo sapiens

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