Results 131 to 140 of about 2,685,028 (268)

The effect of bioactive membrane in alveolar ridge preservation: A double‐blind randomized clinical trial

Journal of Periodontology, EarlyView.
Abstract Background This randomized controlled trial aims to evaluate alveolar ridge preservation (ARP) with or without a biologically active amnion–chorion membrane (BACM). Methods Thirty patients requiring tooth extraction in the esthetic zone were randomly assigned to 2 groups.
Magdalena Orlowska, Muhammad H. A. Saleh, Ann Decker, Junying Li, Alice Ou, Nataly Zambrana, Paolo Nava, Fernanda A. da Costa Deller, Hom‐Lay Wang   +8 more
wiley   +1 more source

Dasatinib and quercetin prevent alveolar bone loss in aged mice

Journal of Periodontology, EarlyView.
Abstract Background Recent findings have associated alveolar bone loss (ABL) with the presence of senescent cells. Aging and the accumulation of senescent cells are associated with a pro‐inflammatory environment which may exacerbate tissue damage.
Luisa S. Battistelli, Renata M. Moraes, Yuri C. Santos, Jaqueline L. Ribeiro, Maíra T. Garcia, Renata F. Prado, Florent Elefteriou, Ana Lia Anbinder   +7 more
wiley   +1 more source

Effects of Profile Modification on Elastohydrodynamic Lubrication of Straight Bevel Gear

Jixie chuandong, 2019
In order to solve the spur bevel gear end meshing problem， through the straight tooth bevel gear profile modification， improve the small end of the oil film carrying capacity， making the distribution of load along the width of the tooth evenly.
Cong Wei, Youqiang Wang, Yabo Zhou, Shenwen Long   +3 more
doaj  

Aging and periodontitis increase brain dissemination of oral bacteria

Journal of Periodontology, EarlyView.
Abstract Background The microbiome is a dynamic system that changes throughout life. Studies have revealed the relationship between periodontal disease and the oral microbiota; however, the impact of periodontal disease on the expression of senescence markers and on the inflammaging of the oral and systemic microbiome remains unclear.
Ozge Unlu, Tsute Chen, Nil Yakar, Zeliha Guney, Bruce Paster, Isabel Carreras, Alpaslan Dedeoglu, Alpdogan Kantarci   +7 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  

Association between periodontitis and oral health–related quality of life in patients with systemic conditions: A meta‐analysis

Journal of Periodontology, EarlyView.
Abstract Background The objective of this systematic review is to evaluate whether periodontitis is associated with impaired oral health–related quality of life (OHRQoL) in adults with systemic conditions. Methods Five databases were searched to identify observational studies that tested the association between periodontitis (diagnosed by clinical ...
Rafael Vargas Bortolaso, Catiusse Crestani Del' Agnese, Leandro Machado Oliveira, Patricia A. Miguez, Fabricio Batistin Zanatta, Raquel Pippi Antoniazzi   +5 more
wiley   +1 more source

重载车辆变速箱齿轮齿廓修形技术研究

Jixie chuandong, 2011
The quasi-static contact finite element analysis of meshing gear is simulated using MSC.Marc software,then transmission error and contact stress of gear are computed in different tooth profile modification methods.Due to the large load fluctuation of ...
王炎, 马吉胜, 刘海平
doaj  

Microbial burden of periodontal diseases and its clinical application: The stage, grade, and furcation matter

Journal of Periodontology, EarlyView.
Abstract Background Periodontal diseases are associated with dysbiotic oral microbial communities, but clinically applicable measures that reflect microbial burden across disease severity and progression remain limited. This study aimed to assess the oral microbial burden of periodontal diseases by evaluating salivary and subgingival lipopolysaccharide
Anbo Dong, Susanna Paju, Jaakko Leskelä, Muhammed Manzoor, Jukka Putaala, Pauli Ylikotila, Eija Könönen, Pirkko Pussinen, Svetislav Zaric   +8 more
wiley   +1 more source

Influence of Radial Deformation of Cam on Profile Modification in Harmonic Drive

Jixie chuandong, 2019
In order to solve the interference between the rigid wheel and the flexible wheel tooth profile caused by the theoretical value of the cam radial deformation is inconsistent with the reality in the harmonic drive， taking the double arc harmonic gear ...
Qianqian Jiang, An Gong, Xiaofeng Li, Lei Zhang, Junyang Li   +4 more
doaj  

Exploring the association between vitamin C intake and gingival bleeding tendency in healthy, non‑deficient young adults

Journal of Periodontology, EarlyView.
Abstract Background The aim of this study is to investigate the relationship between reported vitamin C intake and gingival bleeding severity. Methods In this cross‐sectional study, 336 participants were screened, and 262 (118 females, 144 males) were eligible. Vitamin C intake was derived from the Food Frequency Questionnaire (FFQ).
Thijs M. H. de Jong, Dagmar E. Slot, Cees Valkenburg, Bruno G. Loos, Fridus A. van der Weijden   +4 more
wiley   +1 more source