Assessment of the Bond Strength of Orthodontic Bracket on Ceramic Crown Surface Using Three Various Bonding Agents: A Comparative Study.

Aim: The current study's aim was to evaluate the orthodontic bracket's bond strength employing three different bonding agents on a ceramic crown surface.

Materials And Methods: Tooth preparation on 60 permanent maxillary premolar teeth extracted for orthodontic purposes was carried out. Supragingival finishing margins were made for all samples, and ceramic (PFM) crowns were fabricated.

Comparative Evaluation of Microleakage below the Orthodontic Brackets after Bonding with Various Adhesive Agents: An Study.

Aim: The aim of the current study was to assess the microleakage below orthodontic brackets after bonding with three different adhesive materials.

Materials And Methods: In total, 75 healthy human premolars that had been extracted for orthodontic treatment were utilized in this investigation. The samples were divided into three groups of 25 samples randomly.

Decompressive craniectomy versus craniotomy for acute subdural hematoma: A systematic review and meta-analysis with an adjusted subgroup analysis.

Introduction: Acute subdural hematomas are major causes of morbidity which warrant immediate treatment. If surgical intervention is warranted, craniotomy (CO) and decompressive craniectomy (DC) are employed, largely based on a loosely defined criteria and the neurosurgeon's best judgment. The primacy of one approach over another is a matter of dispute.

Building, benchmarking, and exploring perturbative maps of transcriptional and morphological data.

The continued scaling of genetic perturbation technologies combined with high-dimensional assays such as cellular microscopy and RNA-sequencing has enabled genome-scale reverse-genetics experiments that go beyond single-endpoint measurements of growth or lethality. Datasets emerging from these experiments can be combined to construct perturbative "maps of biology", in which readouts from various manipulations (e.g.

Cold and Liquid Crystal Properties of Square-Planar Copper(II) Versus Nickel(II)- Iminophenolate/Naphthalen-2-Olate Schiff Base Complexes.

Reaction of the phenolate or naphthalen-2-olate based Schiff base ligands, (E)-1-((2-ethylphenylimino)methyl)phenol (HL1) or (E)-1-((2-ethylphenylimino)methyl)naphthalen-2-ol (HL2) with nickel(II) and copper(II) acetate provides the complexes bis[(E)-1-((2-ethylphenylimino)methyl)phenolato-ĸN,O]Ni/Cu(II), [Ni(L1)] (1) and [Cu(L1)] (2), or bis[(E)-1-((2-ethylphenylimino)methyl)naphthalen-2-olato-ĸN,O]Ni/Cu(II), [Ni(L2)] (3) and [Cu(L2)] (4), respectively. Single crystal X-ray structure determinations for 1, 3 and 4 reveal N,O-metal coordination of two chelating Schiff base ligands in a square-planar geometry. Powder X-ray diffractograms confirm the phase purity of the bulk microcrystalline samples.