Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients
BackgroundThe cognitive effects of wearing a denture are not well understood. This study was conducted to clarify the effects of denture use on prefrontal and chewing muscle activities, occlusal state, and subjective chewing ability in partially edentulous elderly individuals.MethodsA total of 16 pa...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-01-01
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| Series: | Frontiers in Aging Neuroscience |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fnagi.2019.00375/full |
| _version_ | 1818863842197766144 |
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| author | Noriyuki Narita Tomohiro Ishii Sunao Iwaki Kazunobu Kamiya Masakazu Okubo Takeshi Uchida Ikuo Kantake Ikuo Kantake Koh Shibutani |
| author_facet | Noriyuki Narita Tomohiro Ishii Sunao Iwaki Kazunobu Kamiya Masakazu Okubo Takeshi Uchida Ikuo Kantake Ikuo Kantake Koh Shibutani |
| author_sort | Noriyuki Narita |
| collection | DOAJ |
| description | BackgroundThe cognitive effects of wearing a denture are not well understood. This study was conducted to clarify the effects of denture use on prefrontal and chewing muscle activities, occlusal state, and subjective chewing ability in partially edentulous elderly individuals.MethodsA total of 16 partially edentulous patients were enrolled. Chewing-related prefrontal cortex and jaw muscle activities were simultaneously examined using a functional near-infrared spectroscopy (fNIRS) device and electromyography, under the conditions of unwearing, and wearing a denture. Occlusal state and masticatory score were also determined under both conditions. Using multiple linear regression analysis, associations between prefrontal and chewing activities with wearing were examined using change rates.ResultsChewing rhythmicity was maintained under both conditions. As compared with unwearing, the wearing condition was associated with improved prefrontal cortex and chewing muscle activities, occlusal state in regard to force and area, and masticatory score. Also, prefrontal activities were positively associated with burst duration and peak amplitude in masseter (Mm) and temporal muscle activities, as well as masticatory scores. In contrast, prefrontal activities were negatively associated with occlusal force.ConclusionWearing a denture induced a positive association between burst duration and peak amplitude in Mm and temporal muscle activities and prefrontal activity, which may indicate a parallel consolidation of prefrontal cortex and rhythmical chewing activities, as well as masticatory scores. On the other hand, denture use induced a negative association of occlusal force with prefrontal activities, which might suggest that prefrontal compensative associations for the physiocognitive acquisition depended on biomechanical efficacy gained by wearing a denture. |
| first_indexed | 2024-12-19T10:22:11Z |
| format | Article |
| id | doaj.art-b844dabd664e471cbf71d336ea45a925 |
| institution | Directory Open Access Journal |
| issn | 1663-4365 |
| language | English |
| last_indexed | 2024-12-19T10:22:11Z |
| publishDate | 2020-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Aging Neuroscience |
| spelling | doaj.art-b844dabd664e471cbf71d336ea45a9252022-12-21T20:26:02ZengFrontiers Media S.A.Frontiers in Aging Neuroscience1663-43652020-01-011110.3389/fnagi.2019.00375494462Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly PatientsNoriyuki Narita0Tomohiro Ishii1Sunao Iwaki2Kazunobu Kamiya3Masakazu Okubo4Takeshi Uchida5Ikuo Kantake6Ikuo Kantake7Koh Shibutani8Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, JapanDepartment of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, JapanAutomotive Human Factors Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba, JapanDepartment of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, JapanDepartment of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, JapanDental Support Co. Ltd., Chiba, JapanDental Support Co. Ltd., Chiba, JapanDepartment of Anesthesiology, Nihon University School of Dentistry at Matsudo, Matsudo, JapanDepartment of Anesthesiology, Nihon University School of Dentistry at Matsudo, Matsudo, JapanBackgroundThe cognitive effects of wearing a denture are not well understood. This study was conducted to clarify the effects of denture use on prefrontal and chewing muscle activities, occlusal state, and subjective chewing ability in partially edentulous elderly individuals.MethodsA total of 16 partially edentulous patients were enrolled. Chewing-related prefrontal cortex and jaw muscle activities were simultaneously examined using a functional near-infrared spectroscopy (fNIRS) device and electromyography, under the conditions of unwearing, and wearing a denture. Occlusal state and masticatory score were also determined under both conditions. Using multiple linear regression analysis, associations between prefrontal and chewing activities with wearing were examined using change rates.ResultsChewing rhythmicity was maintained under both conditions. As compared with unwearing, the wearing condition was associated with improved prefrontal cortex and chewing muscle activities, occlusal state in regard to force and area, and masticatory score. Also, prefrontal activities were positively associated with burst duration and peak amplitude in masseter (Mm) and temporal muscle activities, as well as masticatory scores. In contrast, prefrontal activities were negatively associated with occlusal force.ConclusionWearing a denture induced a positive association between burst duration and peak amplitude in Mm and temporal muscle activities and prefrontal activity, which may indicate a parallel consolidation of prefrontal cortex and rhythmical chewing activities, as well as masticatory scores. On the other hand, denture use induced a negative association of occlusal force with prefrontal activities, which might suggest that prefrontal compensative associations for the physiocognitive acquisition depended on biomechanical efficacy gained by wearing a denture.https://www.frontiersin.org/article/10.3389/fnagi.2019.00375/fullprefrontal cortexconsolidationcompensationchewing activitydenture wearingelderly |
| spellingShingle | Noriyuki Narita Tomohiro Ishii Sunao Iwaki Kazunobu Kamiya Masakazu Okubo Takeshi Uchida Ikuo Kantake Ikuo Kantake Koh Shibutani Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients Frontiers in Aging Neuroscience prefrontal cortex consolidation compensation chewing activity denture wearing elderly |
| title | Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients |
| title_full | Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients |
| title_fullStr | Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients |
| title_full_unstemmed | Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients |
| title_short | Prefrontal Consolidation and Compensation as a Function of Wearing Denture in Partially Edentulous Elderly Patients |
| title_sort | prefrontal consolidation and compensation as a function of wearing denture in partially edentulous elderly patients |
| topic | prefrontal cortex consolidation compensation chewing activity denture wearing elderly |
| url | https://www.frontiersin.org/article/10.3389/fnagi.2019.00375/full |
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