scholarly journals The anterior component of occlusal force and lower tooth movements

2015 ◽  
Author(s):  
Σαρμάντ Σαλέχ
Keyword(s):  
Occlusal Force ◽  
Lower Tooth

Σκοπός: Η αξιολόγηση της σχέσης της πρόσθιας συνιστώσας της μασητικής δύναμης (ΠΣΜΔ) με την εγγύς μετακίνηση των κάτω δοντιών.Μέθοδος: Το δείγμα αποτελείτο από 30 άτομα (μέση ηλικία: 21.5, τυπική απόκλιση: 2.7). Η ΠΣΜΔ υπολογίστηκε ως η αύξηση της δύναμης στο σημείο επαφής μεταξύ του κάτω πρώτου γομφίου και δευτέρου προγομφίου, κατά τη δήξη. Ο αισθητήρας μέτρησης της μασητικής δύναμης ήταν 4 χιλ. σε πάχος, ενώ ο αισθητήρας της μεσοδόντιας δύναμης ήταν 0.2 χιλ. Οι μετακινήσεις των δοντιών μετρήθηκαν στους 3 άξονες του χώρου με αλληλεπίθεση ψηφιακών εκμαγείων, τα οποία ελήφθησαν 4 ώρες μετά την τοποθέτηση διαχωριστικού ελαστικού δακτυλίου μεταξύ κάτω πρώτου γομφίου και δευτέρου προγομφίου. Έγιναν δύο ομάδες μετρήσεων, μία χωρίς και μία με εφαρμογή μασητικών δυνάμεων κατά την περίοδο των 4 ωρών.Αποτελέσματα: Η μέση τιμή της ΠΣΜΔ ήταν 20.59 N (τυπική απόκλιση: 4.60). Σημαντική μείωση της οδοντικής μετακίνησης παρατηρήθηκε με την εφαρμογή μασητικών δυνάμεων. Δεν παρατηρήθηκε συσχέτιση μεταξύ της εγγύς-άπω μετακίνησης του γομφίου και προγομφίου και του μεγέθους της ΠΣΜΔ (R2=0.033, 0.028).Συμπεράσματα: Δεν βρέθηκε συσχέτιση μεταξύ της εγγύς μετακίνησης των δοντιών και της ΠΣΜΔ. Μετά από συνεχή μάσηση, τα δόντια μετακινήθηκαν περισσότερο γλωσσικά και αυχενικά, καθώς και συμπλησίασαν, σε σχέση με την εφαρμογή διαχωριστικού χωρίς μάσηση.

scholarly journals Effect of mandibular complete dentures relining on occlusal force distribution using T-scan system

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Eman M. Ibraheem ◽  
Hisham S. ElGabry
Keyword(s):  
Trial Registration ◽  
Force Distribution ◽  
Complete Dentures ◽  
Clinical Trial Registration ◽  
Occlusal Force ◽  
Left Posterior ◽  
Before And After ◽  
Soft Denture Liner ◽  
Edentulous Patients ◽  
Posterior Area

Abstract Background This study aimed to evaluate the effect of mandibular complete dentures relining using soft relining material on the distribution of various occlusal forces using T-Scan system. Fifty completely edentulous patients having their conventional complete dentures earlier fabricated and utilized were selected for this study. Patients were controlled diabetics, characterized by having their residual alveolar ridges moderately developed and lined with firm mucoperiosteum. Mandibular complete dentures were relined with soft denture liner and T-Scan device was used for occlusal force distribution measurement prior to denture relining and three months thereafter the relinning procedure. Results Comparison between occlusal forces percentages before and after denture relining revealed that occlusal forces percentages was significantly lower after denture relining in anterior area, significantly higher after denture relining in right posterior area, where it was insignificantly higher after relining in left posterior area. Conclusions Our findings revealed that the use of soft denture liner for mandibular complete denture relining significantly improved the occlusal load distribution. Clinical trial registration Trial registration NCT, NCT04701970. Registered 23/11/2020—Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT04701970

scholarly journals Mapping the immune microenvironment for mandibular alveolar bone homeostasis at single-cell resolution

Bone Research ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Weimin Lin ◽  
Qiwen Li ◽  
Danting Zhang ◽  
Xiaohan Zhang ◽  
Xingying Qi ◽  
...  
Keyword(s):  
Single Cell ◽  
Alveolar Bone ◽  
Immune Cell ◽  
Adipogenic Differentiation ◽  
Oncostatin M ◽  
Long Bone ◽  
Bone Homeostasis ◽  
Oral Diseases ◽  
Immune Microenvironment ◽  
Occlusal Force

AbstractAlveolar bone is the thickened ridge of jaw bone that supports teeth. It is subject to constant occlusal force and pathogens invasion, and is therefore under active bone remodeling and immunomodulation. Alveolar bone holds a distinct niche from long bone considering their different developmental origin and postnatal remodeling pattern. However, a systematic explanation of alveolar bone at single-cell level is still lacking. Here, we construct a single-cell atlas of mouse mandibular alveolar bone through single-cell RNA sequencing (scRNA-seq). A more active immune microenvironment is identified in alveolar bone, with a higher proportion of mature immune cells than in long bone. Among all immune cell populations, the monocyte/macrophage subpopulation most actively interacts with mesenchymal stem cells (MSCs) subpopulation. Alveolar bone monocytes/macrophages express a higher level of Oncostatin M (Osm) compared to long bone, which promotes osteogenic differentiation and inhibits adipogenic differentiation of MSCs. In summary, our study reveals a unique immune microenvironment of alveolar bone, which may provide a more precise immune-modulatory target for therapeutic treatment of oral diseases.

scholarly journals The relationship between the Fall Risk Index-21(FRI-21) and occlusal force in the frail elderly

2015 ◽  
Vol 5 (1) ◽  
pp. 9-14 ◽  
Author(s):  
YUH YAMASHITA ◽  
HARUKI KOGO ◽  
HIROSHI OTAO ◽  
AYA HIRAO ◽  
KATSUHIKO MIZOTA
Keyword(s):  
Frail Elderly ◽  
Fall Risk ◽  
Risk Index ◽  
Occlusal Force ◽  
The Relationship

Association of Occlusal Force with Cognition in Independent Older Japanese People

2016 ◽  
Vol 1 (1) ◽  
pp. 69-76 ◽  
Author(s):  
H. Takeshita ◽  
K. Ikebe ◽  
Y. Gondo ◽  
H. Inagaki ◽  
Y. Masui ◽  
...  
Keyword(s):  
Japanese People ◽  
Occlusal Force

Salivary Secretion and Occlusal Force in Patients with Unilateral Cerebral Stroke

2010 ◽  
Vol 120 (5) ◽  
pp. 355-360 ◽  
Author(s):  
Tetsuo Kawasaka ◽  
Megumi Shimodozono ◽  
Atsuko Ogata ◽  
Nobuyuki Tanaka ◽  
Kazumi Kawahira
Keyword(s):  
Salivary Secretion ◽  
Cerebral Stroke ◽  
Occlusal Force

Initial Change in the Occlusal Force and Occlusal Contact Area Following Single Molar Implant Restoration

2021 ◽  
Vol 36 (6) ◽  
pp. 1139-1146
Author(s):  
Ye-Jin Kim ◽  
Kyung-Ho Ko ◽  
Yoon-Hyuk Huh ◽  
Lee-Ra Cho ◽  
Chan-Jin Park
Keyword(s):  
Contact Area ◽  
Occlusal Force ◽  
Occlusal Contact ◽  
Implant Restoration ◽  
Initial Change

scholarly journals Occlusal force predicts global motion coherence threshold in adolescent boys

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Kensuke Kiriishi ◽  
Hirokazu Doi ◽  
Nobuaki Magata ◽  
Tetsuro Torisu ◽  
Mihoko Tanaka ◽  
...  
Keyword(s):  
Global Motion ◽  
Adolescent Boys ◽  
Occlusal Force ◽  
Motion Coherence

scholarly journals Association between maximum occlusal force and 3-year all-cause mortality in community-dwelling elderly people

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Toshimitsu Iinuma ◽  
Yasumichi Arai ◽  
Michiyo Takayama ◽  
Yukiko Abe ◽  
Tomoka Ito ◽  
...  
Keyword(s):  
Elderly People ◽  
Community Dwelling ◽  
Occlusal Force ◽  
All Cause Mortality

scholarly journals Relationship Between Occlusal Force and Endothelial Function in Community-Dwelling Elderly

2020 ◽  
Author(s):  
Kanna Kato ◽  
Naoko Matsuda ◽  
Miki Takahata ◽  
Chika Koseki ◽  
Michiyasu Yamaki ◽  
...  
Keyword(s):  
Life Expectancy ◽  
Endothelial Function ◽  
Grip Strength ◽  
General Condition ◽  
Force Measurement ◽  
The Elderly ◽  
Community Dwelling ◽  
Healthy Life ◽  
Occlusal Force ◽  
The Relationship

Abstract Background: Prolonged healthy life expectancy, which is duration without the requirement of any kind of help for activities of daily living (ADL), is essential to ensure a long life with a good quality of living in the community. Further, local residents should understand their health conditions and live consciously to prolong healthy life expectancy. The development of a simple general health indicator is necessary. Both occlusal force and flow-medicated dilation (FMD) which reflects endothelial function are useful tools for understanding the general condition of the elderly. However, few studies have investigated the relationship between occlusal force and endothelial function. In the present study we examined this relationship, occlusal force measurement can be a good indicator of the general condition of the elderly. Methods: In 38 community-dwelling women(aged 76.7 ±5.7 years), we measured occlusal force,　grip strength, endothelial function evaluated by FMD, advanced glycation end products (AGEs). In this study we investigate we investigated the relationship between occlusal force, measurement items, and factors independently related to endothelial dysfunction (FMD<7％). Results: There were significantly correlation between occlusal force and grip strength (r=0.54, p<0.01). Degree of FMD significantly associated with occlusal force (r=0.60, p<0.01) and grip strength (r=0.35, p<0.05) or amount of increased AGEs (r=-0.37, p<0.05). Occlusal force was independently associated with degree of FMD after adjusting for age, AGEs, and grip strength (p < 0.05).Conclusion: There was a significant relationship between occlusal force and FMD. Occlusal force can be an important indicator of endothelial function in community-dwelling elderly. This study may help understanding general health of elderly in community.

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