Publications by authors named "Jumpei Okawa"
Article Synopsis
- * He was intubated and treated for acute respiratory distress syndrome (ARDS) with high-dose corticosteroids and ECMO, but did not improve and passed away 35 days later.
- * The autopsy indicated diffuse alveolar damage and idiopathic diffuse alveolar hemorrhage linked to ARDS, highlighting the need to consider ARDS as a possible diagnosis after COVID-19 vaccination-related respiratory symptoms.
Article Synopsis
- - The study investigates 3D tongue movements during chewing using electromagnetic articulography (EMA), highlighting the tongue's role in mastication, swallowing, and articulation despite its hidden location in the mouth.
- - Ten healthy young volunteers had EMA sensors placed on their tongues and jaw to track movements while chewing gum, enabling detailed spatial and sequential analysis of the tongue's motion.
- - Results showed that the tongue moves in concert with the jaw, with specific patterns during chewing phases, such as the anterior tongue moving downward more than the posterior and the tongue reaching forward when the jaw is pulled back.
Background: Coordination among lip, cheek and tongue movements during swallowing in patients with mandibular prognathism remains unclear.
Objectives: This study aimed to identify the temporal sequences of tongue pressure and maxillofacial muscle activities during swallowing in patients with mandibular prognathism and compared characteristics with those of healthy volunteers.
Methods: Seven patients with mandibular prognathism (mandibular prognathism group) and 25 healthy volunteers with individual normal occlusion (control group) were recruited.
Article Synopsis
- The study aimed to create image recognition networks to assess tongue coating status using digital photographs of volunteers' tongues.
- Two separate networks were developed: one for tongue detection (using YOLO v2) and another for classifying tongue coating (using ResNet-18), evaluated by experienced panelists.
- Results showed high accuracy in tongue detection and strong agreement between the network's classifications and panelist scores, indicating that image recognition technology can effectively assess tongue coating status.
Background: The state of food comminution caused by chewing is an important factor triggering the swallowing reflex. However, the impact of retronasal aroma released from comminuted food to the nose upon swallowing during food intake is poorly understood.
Objective: The present study investigated the relationship between aroma concentration and swallowing threshold while chewing a standardised test food.
Background: The tongue functions by modulating according to bolus volume when swallowing; however, associated tongue dynamics are unclear.
Objective: We aimed to clarify how tongue motion and tongue pressure change with bolus volume during swallowing.
Methods: Sixteen healthy volunteers (age 29.
Background: Although various training methods have been reported for improving oral function such as occlusal force, there are few reports that show the training effect of eating hard food on the oral functions.
Objective: To examine the training effects of habitually ating hard gummy candies on oral functions.
Methods: Participants of this cohort study were recruited into a training (six women, eight men; mean age 27.
Mastication is a physiological process whereby food is comminuted and mixed with saliva to form a swallowable bolus; it is also the initial process for retronasal aroma that is released from foods to receptors in the nose. However, the influence of mastication state on retronasal aroma is poorly understood. The purpose of this study was to investigate the relationship between aroma concentration and factors related to mastication state.
View Article and Find Full Text PDFTo provide appropriate foods for elderly people with eating difficulties, it is necessary to take account of the ability of compensatory mastication such as tongue squeezing. However, the biomechanics of tongue squeezing is still unclear. The aim of present study is to investigate the effect of the initial mechanical properties of gels on the change in tongue pressure production during squeezing and swallowing.
View Article and Find Full Text PDFPurpose In recent years, the chewing frequency, i.e., the number of chewing cycles, has decreased owing to changes in dietary habits.
View Article and Find Full Text PDFBackground: Tongue motor biomechanics during swallowing was not fully elucidated due to the technical difficulty.
Objective: To evaluate the relationship between tongue motion and tongue pressure production by simultaneously measuring tongue motion and tongue pressure during water swallowing.
Methods: In 12 healthy male participants (mean age, 30.
Older adults with disorders of mastication and swallowing are often fed soft foods such as jelly or puree. The texture of such semi-solid foods allows them to be squeezed between the tongue and palate rather than being chewed. However, it is difficult to visually identify such strategies for the oral processing of food.
View Article and Find Full Text PDFBackground: Pharyngeal residue can trigger aspiration and choking after swallowing. Various studies to assess the amount of pharyngeal residue have been conducted; however, an easy and quantitative method is yet to be established. The aroma released from the pharyngeal residue is thought to be delivered from the pharynx to the nasal cavity via velopharynx by expiration, that is, retronasal pathway.
View Article and Find Full Text PDFPurpose: Masticatory performance can be measured through elution of glucose or beta-carotene from comminuted gummy jelly. However, these methods require special devices. Additionally, occasional/unintentional swallowing or inadequate collection of comminuted particles of gummy jelly in the oral cavity may cause measurement errors.
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