Search

Your search keyword '"Tatsurou, Tanaka"' showing total 4 results
Start Over Author "Tatsurou, Tanaka" Publication Year Range Last 3 years
4 results on '"Tatsurou, Tanaka"'

1. The potential positive effect of periodontal treatment on brain function activity using functional magnetic resonance imaging analysis

Author

Kosuke Muraoka, Masafumi Oda, Kenichi Yoshino, Tatsurou Tanaka, Masaki Morishita, Taiji Nakamura, Ryota Kibune, Kazuo Sonoki, Yasuhiro Morimoto, Keisuke Nakashima, and Shuji Awano

Subjects
Brain activation, Clenching task, Functional magnetic resonance imaging, Occlusion, Periodontal initial treatment, Dentistry, RK1-715
Abstract

Background/purpose: There are reports on the relationship between periodontal treatment and the whole body. The purpose of the present study was to investigate the effect of periodontal initial treatment on brain function activity by improving periodontal tissue and the occlusal status of subjects with periodontitis. Materials and methods: The subjects were 13 patients with periodontitis. Following the patient's informed written consent, the periodontal initial treatment provided to the patient included tooth brushing instruction, scaling and root planning, however, occlusal adjustment was not performed at this stage. Periodontal examination, occlusal force examination and fMRI results were also evaluated at the initial and the reevaluation examinations. Results: After the periodontal initial treatment had been performed, periodontal tissue had significantly improved. In addition, cerebral blood flow in the insula and primary motor cortex was also improved, as confirmed by fMRI. Conclusion: This result suggests that the periodontal ligament has recovered and the periodontal ligament neuron have been further subjected to clenching in the insula.

Published
2024
Full Text
View/download PDF

2. The Alteration of Brain Function by the Improvement of Periodontal Tissues and Occlusal State

Author

Kosuke Muraoka, Masafumi Oda, Kenichi Yoshino, Tatsurou Tanaka, Masaki Morishita, Taiji Nakamura, Ryota Kibune, Jyunpei Tokunaga, Kazuo Sonoki, Yasuhiro Morimoto, Keisuke Nakashima, and Shuji Awano

Subjects
Dentistry, RK1-715
Abstract

Objective. In this study, we have introduced a case in which the effective blood oxygenation level-dependent signal on functional magnetic resonance imaging (fMRI) was altered by the improvement of periodontal tissue and occlusal function in a patient with periodontitis Stage II Grade B. Material and Methods. A 61-year-old female patient requiring periodontal treatment was diagnosed as having periodontitis Stage II Grade B via clinical and radiographic examinations. Her past medical history included type 2 diabetes, hypertension, and hyperlipidemia. Following the patient’s informed written consent, the periodontal initial treatment provided to the patient included tooth brushing instruction and scaling and root planing; however, occlusal adjustment was not performed at this stage. Occlusal force and fMRI results were also evaluated at the initial and reevaluation examinations. Results. After the periodontal initial treatment had been performed, it was noted that the patient’s periodontal tissue and occlusal force had improved. It was also evident from fMRI that cerebral blood flow had been activated in the insula, primary motor cortex, and premotor cortex. Conclusion. This result suggested that the periodontal ligament had recovered and the periodontal ligament neuron had been further subjected to clenching in the insula so that the muscle spindle sensation impacted the motor cortex.

Published
2022
Full Text
View/download PDF

3. Visualization of Peripheral Blood Vessels on the Lingual Aspect of the Mandible Using a Balanced Steady-State Free-Precession Sequence with a Time-Spatial Labeling Inversion Pulse: Usefulness for Prevention of Severe Complications of Dental Implantation

Author

Tatsurou Tanaka, Yusuke Kawashima, Masafumi Oda, Nao Wakasugi-Sato, Shinobu Matsumoto-Takeda, Shun Nishimura, and Yasuhiro Morimoto

Subjects
General Medicine, blood vessels, mandibles, dental implants, steady-state free-precession, magnetic resonance angiography
Abstract

The aim of this study was to evaluate whether a balanced steady-state free-precession (SSFP) sequence with a time–spatial labeling inversion pulse (time–SLIP) without contrast medium could elucidate branches of the lingual and facial arteries on the lingual aspect of the mandible as a potential technique for preventing severe complications in dental implantation surgery. In this study, magnetic resonance angiography (MRA) using SSFP with a time–SLIP was evaluated in 40 subjects. The outline and course of branches of the lingual and facial arteries near the mandible were assessed clinically in the same subjects against contrast-enhanced computed tomography (CT) images as the gold standard. The submental, sublingual, and deep lingual arteries could be visualized via MRA in 16, 20, and 16 of the 40 subjects, respectively. The major axes of the respective arteries were approximately 24, 24, and 16 mm. The outline and course of all visualized arteries coincided with those on CT. MRA using SSFP with a time–SLIP appears to have potential as a non-contrast technique for visualizing branches of the lingual and facial arteries on the lingual aspect of the mandible. Information regarding the outline and course of these arteries as obtained using this MRA technique could assist in preventing severe complications in dental implantation surgery.

Published
2022

4. Imaging characteristics of the gubernaculum tracts in successional teeth related to deciduous fused teeth on computed tomography

Author

Masafumi Oda, Ikuko Nishida, Katsura Saeki, Tatsurou Tanaka, Shinobu Matsumoto‐Takeda, Nao Wakasugi‐Sato, Manabu Habu, Yutaro Nagasaki, Daigo Yoshiga, Masaaki Sasaguri, and Yasuhiro Morimoto

Subjects
Embryology, Pediatrics, Perinatology and Child Health, Humans, General Medicine, Gubernaculum, Tooth, Deciduous, Cone-Beam Computed Tomography, Developmental Biology, Fused Teeth, Tooth Eruption, Retrospective Studies
Abstract

The purpose of this study was to elucidate the imaging characteristics of the gubernaculum tracts in successional teeth related to fused deciduous teeth on computed tomography. The imaging findings of 15 gubernaculum tracts in successional teeth related to fused deciduous teeth were retrospectively analyzed using cone-beam computed tomography or multidetector computed tomography. In cases without a congenitally defected successor, the two gubernaculum tracts of two successional teeth related to fused deciduous teeth were fused into one. Gubernaculum tracts (GTs) in mesial successors were vertical, but in distal successors they were inclined to mesial. The major abnormalities of the successional teeth related to fused deciduous teeth were delayed eruption and delayed formation. No inclined mesial successors were found, whereas most of the distal successors were inclined to mesial along with the inclined GT. The gubernaculum tracts of successors with a congenital defect of the other successors were vertical, and such successors had no abnormalities. The present study showed the imaging characteristics of gubernaculum tracts in successional teeth related to fused deciduous teeth. The abnormal eruption of successional teeth related to fused deciduous teeth may be associated with the characteristics of their gubernaculum tracts.

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results