A5040388770- Voice and Speech Disorders
- Dysphagia Assessment and Management
- Temporomandibular Joint Disorders
- Dental Implant Techniques and Outcomes
- Orthodontics and Dentofacial Orthopedics
- Tracheal and airway disorders
- Dental Radiography and Imaging
- Dental Research and COVID-19
- Muscle activation and electromyography studies
- Olfactory and Sensory Function Studies
- Obstructive Sleep Apnea Research
- Phonetics and Phonology Research
- Advanced Chemical Sensor Technologies
- Dental materials and restorations
- Cleft Lip and Palate Research
- Anesthesia and Neurotoxicity Research
- Moyamoya disease diagnosis and treatment
- Salivary Gland Disorders and Functions
- EEG and Brain-Computer Interfaces
- Motor Control and Adaptation
- Speech Recognition and Synthesis
- Artificial Intelligence in Healthcare and Education
- Facial Trauma and Fracture Management
- Dental Erosion and Treatment
- Neurological Complications and Syndromes
Okayama University Hospital
2008-2025
Okayama University
2011-2024
Niigata University of Health and Welfare
2023
Pharmaceutical Biotechnology (Czechia)
2021
Nagoya City University
2016
Niigata University
2009
The EEG findings in 25 children with moyamoya disease were studied. Characteristic such as posterior slow, centrotemporal slow (CT slow), "rebuildup" after the end of hyperventilation, and sleep spindle depression observed. Posterior activity was mainly observed EEGs examined within a short period (mean, 10 months) onset, CI longer (mean,, 28 months), diffuse low-voltage pattern these periods 56 months). Buildup which we refer to "rebuildup," discovered more than half cases.
We previously demonstrated that differentiated enterocytes from human induced pluripotent stem (iPS) cells exhibited drug-metabolizing activities and cytochrome P450 CYP3A4 inducibility. The aim of this study was to apply iPS cell-derived in pharmacokinetic studies by investigating the characteristics drug transport into enterocyte-like cells. Human cultured on feeder were endodermal using activin A. These endodermal-like then intestinal fibroblast growth factor 2. Finally, epidermal...
Summary Elevation of the posterior part tongue is important for normal deglutition and speech. The purpose this study was to develop a new surface electromyography (EMG) method non‐invasively objectively evaluate activity in muscles that control lifting movement tongue. Neck EMG (N‐EMG) recorded using differential electrodes placed on neck, 1 cm border mylohyoid muscle line orthogonal lower mandible. Experiment 1: Three healthy volunteers (three men, mean age 37·7 years) participated an...
To investigate the effect of masseter muscle activity during wakefulness and sleep on tooth wear.Sixteen participants with no or mild wear (NMTW group) sixteen moderate-to-severe (MSTW were enrolled. The severity was evaluated using occlusal incisal indices index. Surface electromyography performed to record electrical left sleep. Electromyographic detected an electromyographic threshold 5% 20% maximal voluntary clenching (MVC). total duration bruxism episodes calculated.The mean ages NMTW...
The wave analysis of swallowing sounds has been receiving attention because the recording process is easy and non-invasive. However, up until now, an expert needed to visually examine entire recorded distinguish from other sounds. purpose this study was establish a methodology automatically sound data during meal in presence everyday ambient sound. Seven healthy participants (mean age: 26·7 ± 1·3 years) participated study. A laryngeal microphone condenser attached nostril were used for...
The extent of heterogeneity regarding the efficacy mandibular 2-implant overdenture is still in question. aim this meta-analysis to provide an update on existing evidence from randomized controlled trials assessing regard patient-based outcomes. Electronic searches were carried out September 2015 through MEDLINE, EMBASE, Cochrane Central Register Controlled Trials, and Systematic Reviews. Only that compared conventional dentures with overdentures included. Patient-based outcomes assessed,...
Summary Background Retraction of the posterior tongue facilitates bolus formation, food transfer and Stage II transport in chewing swallowing. Surface electromyography neck region (N‐EMG) enabled evaluation muscle function at tongue. Although previous studies showed that hardness increased masticatory muscles EMG activity volitional altered swallowing, effect properties condition on N‐EMG has not yet been elucidated. Objective To investigate conditions N‐EMG. Methods Twelve healthy adults...
Abstract Objectives To examine the impact of adding a third midline implant with stud attachment to mandibular two‐implant overdenture on patient‐oriented outcomes. Methods In this pre–post design clinical trial, following standard procedures, overdentures 17 edentulous individuals (61.9 ± 6.6 years) were converted three‐implant by an unloaded implant. Patient‐oriented outcomes included patient expectations and satisfaction as well willingness pay cost conversion. Data collected at baseline...
Summary Because food texture is regarded as an important factor for smooth deglutition, identification of objective parameters that could provide a basis selection elderly or dysphagic patients great importance. We aimed to develop evaluation method mastication using mixed test comprising foodstuffs, simulating daily dietary life. The particle size distribution (>2 mm in diameter) bolus was analysed digital image under dark‐field illumination. Ten female participants (mean age ± s.d.,...
Summary Recently, the swallowing sound has been used to detect events non‐invasively. A previous study, using an accelerometer, showed that site over lateral border of trachea immediately inferior cricoid cartilage was optimal for detecting sounds. However, detection a microphone remains undetermined. To validate in neck region Fourteen healthy subjects (mean age, 27·6 ± 2·2 years; seven male and female) participated this study. Twenty condenser microphones were attached 20 sites on left...
Abstract Background Masticatory movement occurs complicatedly and bilaterally. Although the tongue plays an important role in mastication, bilateral function during mastication has not been clarified yet. Objective To investigate effect of food properties on posterior activity coordination muscles bilaterally by electromyography (EMG). Methods Twenty healthy adults (10 males 10 females; mean age 28 years; range: 22‐33 years) participated this study. Three test foods, gummy jelly (hard food),...
During mastication, some portion of the food bolus is gradually transported to oropharynx before deglutition, which known as stage II transport (STII). Although importance STII in mastication and deglutition has been widely acknowledged, particle properties that are into by have not yet fully specified. To reveal assess usefulness new sampling methods for evaluation masticatory efficiency. Twenty-two healthy volunteers participated this study. Four different conditions were adopted: (a)...
Introduction Palatal augmentation prosthesis (PAP) is used in patients with articulation and swallowing disorders caused by postoperative loss of tongue tissue due to cancer, cerebrovascular disease sequelae age-related hypofunction. We have previously reported a newly designed soft PAP fabricated using an thermoplastic material that particularly appropriate for early intervention. However, the effect on oral function improvement remains be elucidated. The aim this study investigate whether...
The purpose of this pilot prospective cohort study was to investigate the effects parafunctional masseter muscle activity on periodontitis progression among patients receiving supporting periodontal therapy (SPT).We collected data treated at Okayama University Hospital from August 2014 September 2018. group defined as with ≥2 teeth demonstrating a longitudinal loss proximal attachment ≥3 mm during 3-year period and/or least one tooth extraction due progression. Surface electromyography...
Purpose: To examine how particle loss affects the evaluation of masticatory ability using image analysis method.
日本における無歯顎患者の割合は年々減少しているが，一方で高齢人口は増加しており，結果的に無歯顎患者の総数は依然として多いと考える．長きにわたり，全部床義歯（以下，CD）は無歯顎患者の欠損補綴歯科治療の第一選択とされているが，2002年にマギル声明が発表されて以来，インプラントオーバーデンチャー（以下，IOD）が積極的に用いられるようになった．本稿では，まず始めに文献的レビューを基にCDと比較した際のIODの有効性について解説したい．また，IODを製作する上でのポイント，特にIODを成功させるための考え方，使用するインプラント体の本数，各種アタッチメントの使い分け，さらには製作手順についても解説したい．
Abstract Background Fatigue is an important factor for muscle strengthening in rehabilitation medicine. Frequency analysis has been regarded as the gold standard fatigue assessment surface electromyography (EMG). However, there are no experiments quantifying with grouped discharge (GD), which one of historical phenomena observed patients having fatigue, by using high sampling rate recording EMG. Objective To investigate effect induced repeated posterior tongue lift movement (TLM), on...