Results 91 to 100 of about 44,630 (308)

Holistic bone developing microenvironment engineered apoptotic extracellular vesicles recapitulate multidimensional developmental signatures in adult and senile bone repair

Interdisciplinary Medicine, EarlyView.
The developing bone was identified as an M2a‐like macrophage driven immune microenvironment with multidimensional developmental signatures. hME‐ApoEVs were successfully fabricated via stimulating the M2a‐like developing microenvironment in vitro and confirmed its recapitulation of developmental features.
Xiaoran Yu, Jieyun Xu, Yuan Zhao, Xinyu Guo, Hongcheng Chen, Junlong Xue, Yong Ao, Linjun Zhang, Xiaomeng Gao, Xueli Mao, Songtao Shi, Zetao Chen   +11 more
wiley   +1 more source

Analysis of load-bearing contact characteristics of face gears considering the microtopography of tooth surface

Jixie chuandong
ObjectiveThe microtopography formed on the tooth surface of face gears during grinding processing can significantly alter the contact mechanical behavior of the tooth surface.
LI Zhisheng, GAO Song, CAI Zhiqin, SHUI Jianfeng, YANG Shufeng, XU Fei   +5 more
doaj  

Life analysis of helical gear sets using Lundberg-Palmgren theory [PDF]

A mathematical model is developed for surface fatigue life of helical gears. The expected fatigue life of a pinion, gear, or gear set may be calculated from the model. An equation for the dynamic capacity of a gear set was also derived.
Coy, J. J., Zaretsky, E. V.
core   +1 more source

Comparing Digital Reduction Guides and Free‐Hand Techniques for Predoctoral Crown Preparation Accuracy

Journal of Dental Education, EarlyView.
ABSTRACT Purpose/Objectives Insufficient tooth reduction compromises crown longevity and aesthetics. This study aimed to determine whether digitally designed, 3D‐printed reduction guides improved crown preparation accuracy and efficiency for dental students compared to freehand preparation.
Xiaoyue Shi, Shuncong Xu, Chenxuan Wei
wiley   +1 more source

Research on Error Sensitivity Mechanism, Load-Bearing Contact Analysis and Load-Bearing Contact Characteristics of Curved Face Gears Based on Point Cloud Modeling

Mathematics
To address the limitations of traditional analytical modeling in capturing complex surface topographies, this paper presents comprehensive research on the error sensitivity mechanism, loaded tooth contact analysis (LTCA), and load-bearing contact ...
Qing Li, Runshan Gao, Chongxi Zhao, Jiaqi Ji, Moudong Wu, Chong Tian, Qi Yin   +6 more
doaj   +1 more source

The design and analysis of single flank transmission error tester for loaded gears [PDF]

To strengthen the understanding of gear transmission error and to verify mathematical models which predict them, a test stand that will measure the transmission error of gear pairs under design loads has been investigated.
Bassett, Duane E., Houser, Donald R.
core   +1 more source

Titanium migration and bone response in loaded osseointegrated implants: ESEM‐EDX analysis in Macaca fascicularis

Journal of Periodontology, EarlyView.
Abstract Background Titanium nanoparticle (TP) migration into peri‐implant bone may influence osseointegration. It remains unclear how loading protocols may affect TP distribution. This study aimed to detect TP in the bone around implants undergoing different loading protocols in Macaca fascicularis.
Fausto Zamparini, Andrea Spinelli, Maria Giovanna Gandolfi, Stefano Chersoni, Achille Tarsitano, Giovanni Badiali, Chooi Gait Toh, Carlo Prati, Georgios Romanos   +8 more
wiley   +1 more source

Change in tooth mobility following non‐surgical periodontal therapy: A retrospective cohort study of clinical outcomes

Journal of Periodontology, EarlyView.
Abstract Background To evaluate the change in clinical tooth mobility following scaling and root planing (SRP) and to identify baseline factors predictive of the 12‐month outcome. Methods This retrospective cohort study utilized de‐identified electronic health records from the BigMouth Dental Data Repository. The final cohort consisted of 152 patients,
Georgios S. Chatzopoulos, Larry F. Wolff
wiley   +1 more source

The design and analysis of single flank transmission error testor for loaded gears [PDF]

Due to geometrical imperfections in gears and finite tooth stiffnesses, the motion transmitted from an input gear shaft to an output gear shaft will not have conjugate action.
Bassett, D. E., Houser, D. R.
core   +1 more source

Predicting peri‐implantitis incidence and implant failure via risk‐assessment and prognostication tools: A validation study

Journal of Periodontology, EarlyView.
Abstract Background Identifying individuals at high risk for developing peri‐implantitis (PI) and then determining the prognosis for implants with PI is crucial for treatment planning. Methods This study longitudinally followed implants from implant placement retrospectively.
Muhammad H. A. Saleh, Era Kakar, Giuseppe Troiano, Hamzeh Almashni, Jonathan Misch, Fariba Esperouz, Shahad Alhazmi, Hom‐Lay Wang, Zoltán Baráth, Istvan A. Urban   +9 more
wiley   +1 more source