Results 131 to 140 of about 3,217,305 (276)

Association between xerostomia and peri‐implant health: A retrospective cohort study

Journal of Periodontology, EarlyView.
Abstract Background Dental implants are a long‐term and reliable solution to replace missing dentition, but subject to different patient‐related and biological changes that could alter its success. Xerostomia, or the alteration of the normal salivary flow, can impair oral function and potentially affect the success of any treatment, including implant ...
Shahad Alhazmi, Sahar Baniameri, Parham Hazrati, Yousef Amrou, Fatemeh SamavatiJame, Hom‐Lay Wang, Muhammad H. A. Saleh   +6 more
wiley   +1 more source

ANALYSIS OF TOоTH PROFILE AND MESHING CHARACTERISTICS OF DOUBLE CYCLOID PIN GEAR TRANSMISSION

Jixie qiangdu
The double cycloid tooth profile was applied to the NN type planetary gear transmission with small tooth difference. By analyzing the concavity, curvature and radius of curvature of the inner and outer cycloid tooth profile, the characteristics of the ...
CUI JianKun, DING JiaLe, SHI YuHeng, ZHANG DeQi   +3 more
doaj  

Mertk drives alveolar bone loss in experimental periodontitis associated with altered neutrophil function and osteoclast recruitment

Journal of Periodontology, EarlyView.
Abstract Background Alveolar bone loss is the hallmark of periodontitis and often remains refractory to conventional mechanical and antimicrobial therapies in chronic cases. Mer receptor tyrosine kinase (Mertk) has been implicated in bone homeostasis, yet the immune mechanisms by which Mertk modulates periodontal bone resorption remain insufficiently ...
Nicholas Mazzara, Kesley Martin, Rana Dabaja, Justin Redmond, Victoria Maglaras, Maxwell Mianecki, Harout Ashekian, Joseph T. Decker, Ann M. Decker   +8 more
wiley   +1 more source

Associated factors for mid‐buccal gingival recessions: Findings from the National Health and Nutrition Examination Survey

Journal of Periodontology, EarlyView.
Abstract Background Population‐level evidence on associated factors for mid‐buccal gingival recession (GR) severity stratified by periodontitis status remains limited. This study assessed the prevalence and severity of GR in United States (US) adults and identified associated factors.
Felix Marschner, Clemens Lechte, Jana Biermann, Franziska Haupt, Alwin Sokolowski   +4 more
wiley   +1 more source

Stiffness Calculation Considering Friction for a Spur Gear Pair with Tooth Wear and Profile Modification

工程科学与技术, 2018
Time varying mesh stiffness is one of the main reasons leading to the vibration in a gear transmission system.In order to obtain more accurate dynamic characteristics of gear systems,it is important to investigate the influence of sliding friction and ...
Yong YANG, Jiaxu WANG, Qinghua ZHOU, Wenguang LI, Lindong XIONG   +4 more
doaj  

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

Journal of Quaternary Science, EarlyView.
ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source

Climate‐modulated accumulation and erosion of sediments in the Rodderberg crater basin for the last 439 ka (East Eifel Volcanic Field, Germany)

Journal of Quaternary Science, EarlyView.
ABSTRACT Glacial/interglacial climate cycles since marine isotope stage (MIS) 12 influenced the discontinuous and 73 m‐long sediment record from the volcanic crater of Rodderberg in the East Eifel Volcanic Field, Germany. High‐resolution grain size and geochemical data have been valued by numerical dating techniques (radiocarbon and luminescence dating,
Bernd Zolitschka, Ines Hogrefe, An‐Sheng Lee, Maarit Kalliokoski, Manfred Frechen   +4 more
wiley   +1 more source

Quasi-Static Force Analysis and Tooth Profile Modification Optimization of the Cycloid Speed Reducer

This article proposes a new method for optimizing tooth profile modification amounts of cycloidal reducers. By optimizing transmission error and transmission ratio fluctuation, the objective optimization function is determined, and the influence of ...
Ran Guo, Xuan Li, Suzhen Wu
core   +1 more source

Recent Advances in Exosome‐Based Nanodelivery Systems for Traumatic Brain Injury Treatment

Med Research, EarlyView.
An overview of functional modification, therapeutic effects, molecular composition, and delivery strategies for exosomes. ABSTRACT Traumatic brain injury (TBI) is a highly heterogeneous neurological condition with extremely high rates of mortality and disability.
Jue Zhu, Weiquan Liao, Ziqi Lian, Mengdan Zhang, Chenxing Wang, Xingjia Zhu, Lin Zhang, Jian Chen, Zhichao Lu, Peipei Gong   +9 more
wiley   +1 more source

Design and application of gear grinding rollers for hyperbolic worms

Jixie chuandong
ObjectiveAs an advanced gear design technology, the gear modification is of great significance in improving gear bearing capacity, service life and noise reduction.
GE Bowei, LEI Laigui
doaj