Assessment of the fracture resistance of teeth instrumented using 2 rotary and 2 reciprocating files versus the Self-Adjusting File (SAF): An ex vivo comparative study on mandibular premolars

Alif means the first, saying the Supreme Life and is Sturdy and has the element of fire and Alif is formed from Ulfah (closeness) ta'lif (formation). With this letter Allah mementa'lif (unite) His creation with the foundation of monotheism and ma'rifah belief in appreciation of faith and monotheism. Therefore, Alif opens certain meanings and definitions of shapes and colors that are in other letters. Then be Alif as "Kiswah" (clothes) for different messages. That is a will. "IQRO" is a revelation that was first passed down to the Prophet Muhammad. Saw. Read it, which starts with the letter Alif and ends with the letter Alif. The creation of a poem is influenced by the environment and the self-reflection of a poet where according to the poet's origin, in comparing in particular Alif's poetry from the two poets. The object of this research is the poetry of Zikir by D. Zawawi Imron and Sajak Alif by Ahmadun Yosi Herfanda. This study uses a comparative method and sociology of literature. Through a comparative study of literature between the poetry of Zikir D. Zawawi Imron and Sajak Alif Ahmadun Yosi Herfanda, it is hoped that the public can know the meaning of Alif according to the poet's view. With this research, the Indonesian people can accept different views on the meaning of Alif in accordance with their respective understanding without having to look for what is right and wrong. The purpose in Alif is like a life, in the form of letters like a body, a tree that is cut to the root, from the heart is split to the seeds, then from the seeds are split so that nothing is the essence of life. So, it is clear that Alif is the most important and Supreme letter. Talking about the meaning of Alif as the first letter revealed on earth. After the letter Alif was revealed, 28 other Hijaiyah letters were born. The letter Alif is made the beginning of His book and the opening letter. Other letters are from Alif and appear on him.

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The Influence of Force Direction on the Fracture Pattern and Fracture Resistance of Canine Teeth in Dogs

Journal of Veterinary Dentistry ◽

10.1177/0898756417705229 ◽

2017 ◽

Vol 34 (1) ◽

pp. 8-17 ◽

Cited By ~ 2

Author(s):

Stephanie Goldschmidt ◽

Catherine Zimmerman ◽

Caitlyn Collins ◽

Scott Hetzel ◽

Heidi-Lynn Ploeg ◽

...

Keyword(s):

Fracture Resistance ◽

Ex Vivo ◽

Testing Machine ◽

Fracture Pattern ◽

Hard Tissue ◽

Canine Tooth ◽

Cross Sectional ◽

Significant Difference ◽

Force Direction ◽

Testing Group

Biomechanical studies of the elongated canine tooth of animals are few, and thus our understanding of mechanical and physical properties of animal teeth is limited. The objective of the present study was to evaluate the influence of force direction on fracture resistance and fracture pattern of canine teeth in an ex vivo dog cadaver model. Forty-five extracted canine teeth from laboratory beagle dogs were standardized by hard tissue volume and randomly distributed among 3 force direction groups. The teeth were secured within a universal testing machine and a load was applied at different directions based on testing group. The maximum force to fracture and the fracture pattern classification were recorded for each tooth. After correcting for hard tissue cross-sectional area in a multivariate analysis, no significant difference in the amount of force required for fracture was apparent between the different force direction groups. However, the influence of force direction on fracture pattern was significant. The results of this study may allow the clinician to educate clients on possible causal force directions in clinically fractured teeth and, thus, help prevent any contributing behavior in the future.

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Comparative Study of Chemosensory Dysfunction in COVID-19 in 2 Geographically Distinct Regions

Ear Nose & Throat Journal ◽

10.1177/01455613211000170 ◽

2021 ◽

pp. 014556132110001

Author(s):

Daniel J. Lee ◽

Daniella Daliyot ◽

Ri Wang ◽

Joel Lockwood ◽

Paul Das ◽

...

Keyword(s):

Comparative Study ◽

Symptom Onset ◽

Subgroup Analysis ◽

Primary Outcome ◽

Cross Sectional Study ◽

The Self ◽

Sectional Study ◽

Cross Sectional ◽

Specific Data ◽

Geographical Regions

Objective: To directly compare the prevalence of chemosensory dysfunction (smell and taste) in geographically distinct regions with the same questionnaires. Methods: A cross-sectional study was performed to evaluate the self-reported symptoms among adults (older than 18 years) who underwent COVID-19 testing at an ambulatory assessment center in Canada and at a hospital in Israel between March 16, 2020, and August 19, 2020. The primary outcome was the prevalence of self-reported chemosensory dysfunction (anosmia/hypomsia and dysgeusia/ageusia). Subgroup analysis was performed to evaluate the prevalence of chemosensory deficits among the outpatients. Results: We identified a total of 350 COVID-19–positive patients (138 Canadians and 212 Israelis). The overall prevalence of chemosensory dysfunction was 47.1%. There was a higher proportion of chemosensory deficits among Canadians compared to Israelis (66.7% vs 34.4%, P < .01). A subgroup analysis for outpatients (never hospitalized) still identified a higher prevalence of chemosensory dysfunction among Canadians compared to Israelis (68.2% vs 36.1%, P < 0.01). A majority of patients recovered their sense of smell after 4 weeks of symptom onset. Conclusion: Although the prevalence of chemosensory deficit in COVID-19 was found to be similar to previously published reports, the prevalence can vary significantly across different geographical regions. Therefore, it is important to obtain regionally specific data so that the symptom of anosmia/dysgeusia can be used as a guide for screening for the clinical diagnosis of COVID-19.

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Icariin promotes osteoblastic differentiation in OVX mice via MAPK signaling pathway revealed by profiling

Traditional Medicine and Modern Medicine ◽

10.1142/s2575900018500027 ◽

2018 ◽

Vol 01 (01) ◽

pp. 33-41

Author(s):

Qin Bian ◽

Shufen Liu ◽

Yongjian Zhao ◽

Jianhua Huang ◽

Ziyin Shen

Keyword(s):

Bone Mass ◽

Signaling Pathway ◽

Pathway Analysis ◽

Ex Vivo ◽

Osteoblastic Differentiation ◽

Mapk Signaling ◽

Mapk Signaling Pathway ◽

The Self ◽

Self Renewal ◽

Colony Forming Unit

Objective: Icariin (ICA), an extract from epimedium, has been reported to be effective in promoting bone formation. The objective of the study is to search for the molecular targets of ICA in bone mesenchymal stem cells (bMSCs) from the mice with ovariectomy (OVX)-induced osteoporosis. Methods: Six-month-old Imprinting Control Region (ICR) mice that underwent OVX were treated with ICA. After three months, bone mass was evaluated by microcomputed tomography, morphometry and immunohistological detection. bMSCs were isolated from the femur and tibia to observe the self-renewal and differentiation capacities using colony-forming unit fibroblastic (CFU-F), colony-forming unit adipocyte (CFU-Adipo) and alkaline phosphatase (ALP) staining. In addition, microarray of bMSCs ex vivo was measured two weeks after ICA treatment and analyzed by heatmap and pathway analysis. The signaling pathway was further explored by western blot assay and inhibitors of p38 and ERK: SB203508 and PD98059. Results: [Formula: see text]CT displayed a decrease in bone mass for three months after OVX. ICA treatment increased the trabecular thickness (Tb.Th), osteoblast number while decreased osteoclast number, elevating osteocalcin (OC) protein levels in vivo and facilitating the self-renewal and osteoblastic differentiation of bMSCs ex vivo. Microarray data indicated ICA rescued several gene expressions that were dysregulated by OVX. Pathway analysis revealed that the core genes acted by ICA were highly involved in MAPK signaling pathway. Further study demonstrated ICA suppressed ERK while stimulated p38 phosphorylation to promote osteoblastic differentiation in vitro. Conclusion: ICA promotes osteoblastic differentiation of bMSCs in OVX mice. MAPK signaling pathway might be involved in the process.

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