Guided Bone Regeneration Using Carbonated Apatite Granules and L-Lactic Acid/ε-Caprolactone Membranes: A Case Series and Histological Evaluation.

: The newly developed poly L-lactic acid/ε-caprolactone (P(LA/LC)) membrane has recently been proposed as a guided bone regeneration (GBR) procedure in implant treatment. This case series details the clinical, radiographic, and histological results of ridge augmentation using bone graft comprising a P(LA/LC) membrane and carbonated apatite for implant treatment. : Ten patients (15 sites) requiring bone augmentation and implant placement were retrospectively assessed.

A strategy for increasing the breakdown field strength beyond the experimental scaling law in yttria films.

Aiming to increase the dielectric breakdown field strength () of yttria films for application in semiconductor manufacturing, a synthetic strategy based on photo-assisted chemical solution deposition was developed to prepare yttria films with aggregates of very small nanocrystallites. Despite containing many elliptical pores, the films exhibited an exceeding 12.7 MV cm, much higher than that predicted according to conventional experimental scaling laws.

Photo-assisted epitaxial growth from nanoparticles to enhance multi-materialization for advanced surface functionalization.

To meet the requirements of freeform objects, a wide range of highly designable resin-based materials has been created, highlighting the need for low-temperature ceramic deposition methods for surface functionalization. Photo-assisted chemical solution deposition (PCSD), an efficient technique for low-temperature ceramic growth, is used to fabricate thin films photochemical and photothermal effects. The hybrid-solution-incorporated PCSD (HS-PCSD), in which a hybrid-solution comprising metal-organic compounds and nanoparticles is used in PCSD, has attracted considerable interest as it enables deposition at reduced temperatures and accelerated rates.

Ridge Preservation and Augmentation Using a Carbonated Apatite Bone Graft Substitute: A Case Series.

The newly developed mineral carbonated apatite has recently been proposed as a bone graft material for bone regenerative treatment in implant therapy. This case series details the clinical and radiographic outcomes of ridge preservation and ridge augmentation using only carbonated apatite as bone graft material for implant treatment. Twenty patients (36 sites) who required bone regeneration and implant placement were retrospectively assessed.

Application of Different Wavelengths of LED Lights in Antimicrobial Photodynamic Therapy for the Treatment of Periodontal Disease.

Therapeutic light has been increasingly used in clinical dentistry for surgical ablation, disinfection, bio-stimulation, reduction in inflammation, and promotion of wound healing. Photodynamic therapy (PDT), a type of phototherapy, has been used to selectively destroy tumor cells. Antimicrobial PDT (a-PDT) is used to inactivate causative bacteria in infectious oral diseases, such as periodontitis.

Effects of various light-emitting diode wavelengths on periodontopathic bacteria and gingival fibroblasts: An in vitro study.

Background: In recent years, light has been used for bacterial control of periodontal diseases. This in vitro study evaluated the effects of light-emitting diode (LED) irradiation at different wavelengths on both Porphyromonas gingivalis and human gingival fibroblasts (HGF-1).

Methods: P.

Antibacterial activity of lysozyme-chitosan oligosaccharide conjugates on two periodontal bacteria.

Objective: This study aimed to evaluate the in vitro antibacterial effects of lysozyme-chitosan oligosaccharide conjugates (LYZOX) against Streptococcus gordonii and Porphyromonas gingivalis.

Materials And Methods: Planktonic S. gordonii and P.

Printing Formation of Flexible (001)-Oriented PZT Films on Plastic Substrates.

High-quality, uniaxially oriented, and flexible PbZrTiO (PZT) films were fabricated on flexible RbLaNbO/BaTiO (RLNO/BTO)-coated polyimide (PI) substrates. All layers were fabricated by a photo-assisted chemical solution deposition (PCSD) process using KrF laser irradiation for photocrystallization of the printed precursors. The Dion-Jacobson perovskite RLNO thin films on flexible PI sheets were employed as seed layers for the uniaxially oriented growth of PZT films.

The Impact of Aortic Valvular Calcium on Transcatheter Heart Valve Distortion.

Objectives: To investigate the relationship between the eccentric calcification of aortic valve and transcatheter heart valve (THV) distortion and the impact of THV distortion on echo parameters and clinical outcomes.

Background: The effects of eccentric calcification of the aortic valve on the THV distortion and the relationship between THV distortion and clinical impact were not fully understood.

Methods: Patients with symptomatic severe aortic stenosis who were undergoing THV implantation were enrolled.

The effect of antimicrobial photodynamic therapy using yellow-green LED and rose bengal on Porphyromonas gingivalis.

Introduction: This study aimed to investigate the effects of a new antimicrobial photodynamic therapy (aPDT) system using yellow-green light-emitting diode (YGL) and rose bengal (RB) on Porphyromonas gingivalis (Pg) in vitro.

Materials And Methods: Pg suspension mixed with RB was irradiated with YGL (565 nm) or blue light-emitting diode (BL, 470 nm) at 428 mW/cm in comparison with chlorhexidine (CHG) treatment. The cells were cultured anaerobically on agar plates, and the number of colony-forming units (CFU) was determined.

Geometry of Tricuspid Valve Apparatus in Patients with Mitral Regurgitation due to Fibroelastic Deficiency versus Barlow Disease: A Real-Time Three-dimensional Transesophageal Echocardiography Study.

Background: Tricuspid valve (TV) geometry gained attention when the prognostic significance of tricuspid regurgitation (TR) was determined. However, the TV geometric characteristics in Barlow disease (BD) have not been elucidated. This study aimed to clarify the difference in TV morphology between BD and fibroelastic deficiency (FED) and the effect of its geometry on residual TR after tricuspid annuloplasty (TAP) using three-dimensional (3D) transesophageal echocardiography.

Uncovering ferroelectric polarization in tetragonal (BiK)TiO-(BiNa)TiO single crystals.

We report the robust ferroelectric properties of (1 - x)(BiNa)TiO-x(BiK)TiO (x = 33%) single crystals grown by a top-seeded solution growth process under a high oxygen-pressure (0.9 MPa) atmosphere. The sample exhibit a large remanent polarization of 48 μC/cm and a sizeable piezoelectric strain constant of 460 pm/V.

Ferroelectrics with a controlled oxygen-vacancy distribution by design.

Controlling and manipulating defects in materials provides an extra degree of freedom not only for enhancing physical properties but also for introducing additional functionalities. In ferroelectric oxides, an accumulation of point defects at specific boundaries often deteriorates a polarization-switching capability, but on the one hand, delivers interface-driven phenomena. At present, it remains challenging to control oxygen vacancies at will to achieve a desirable defect structure.

Ferrielectric-mediated morphotropic phase boundaries in Bi-based polar perovskites.

Spontaneous polarization (P) in ferroelectrics has provided the impetus to develop piezoelectric devices such as sensors, actuators and diagnostic imaging transducers. Widely used lead-based perovskites exhibit a composition-driven phase diagram involving a transition region, known as a morphotropic phase boundary, where the ferroelectric structure changes dramatically and the piezoelectric activity is maximal. In some perovskites, ferroic polarization coexists with nonpolar rotations of octahedra, suggesting an unprecedented phase diagram.

Thromboembolic acute myocardial infarction after aortic valve replacement using the Freestyle stentless aortic bioprosthesis with subcoronary valve replacement.

A 70-year-old woman with substernal chest pain lasting 2.5 h presented to the emergency department of our hospital. She had a history of aortic valve replacement with the Freestyle stentless aortic bioprosthesis for severe aortic regurgitation 7 years ago.

Cardiovascular magnetic resonance imaging in heart failure.

Heart failure is a complex clinical syndrome resulting from heart structural remodeling and impaired function in ejecting blood; its incidence is increasing markedly worldwide. The observed variations in the structure and function of the heart are attributable to differences in etiology of heart failure. Cardiac magnetic resonance imaging (CMR) can characterize myocardial tissue, assess myocardial viability, and help diagnose specific cardiomyopathies.

Polarization twist in perovskite ferrielectrics.

Because the functions of polar materials are governed primarily by their polarization response to external stimuli, the majority of studies have focused on controlling polar lattice distortions. In some perovskite oxides, polar distortions coexist with nonpolar tilts and rotations of oxygen octahedra. The interplay between nonpolar and polar instabilities appears to play a crucial role, raising the question of how to design materials by exploiting their coupling.

Giant photovoltaic effect of ferroelectric domain walls in perovskite single crystals.

The photovoltaic (PV) effect in polar materials offers great potential for light-energy conversion that generates a voltage beyond the bandgap limit of present semiconductor-based solar cells. Ferroelectrics have received renewed attention because of the ability to deliver a high voltage in the presence of ferroelastic domain walls (DWs). In recent years, there has been considerable debate over the impact of the DWs on the PV effects, owing to lack of information on the bulk PV tensor of host ferroelectrics.

[Acute abdominal aortic occlusion in a patient with a giant thrombus in the left atrium and mitral stenosis; report of a case].

The patient was a 69-year-old male who had had percutaneous transvenous mitral commissurotomy (PTMC) 15 years ago, and had stopped taking warfarin after PTMC. He was transferred to our emergency room( ER) because of sudden severe pain in his both lower legs. We recognized pulselessness in his both femoral arteries, and pallor, paresthesia and poikilothermia in his lower extremities.

[Right ventricular rupture due to blunt trauma diagnosed by MDCT; report of a case].

The survival rate of cardiac rupture due to blunt trauma is generally low. We experienced a case with right ventricular rupture due to blunt trauma. The patient was a 49-year-old man who was crushed in a traffic accident and transported to a local hospital in a shock state.

Conventional surgical repair of traumatic rupture of the thoracic aorta.

Objective: Traumatic rupture of the thoracic aorta is a life-threatening injury requiring urgent surgical intervention. Despite recent improvements in resuscitation and emergency operative techniques, the outcomes of patients with multiple injuries are still associated with a high mortality rate. We retrospectively examined the preoperative demographic data, associated complications and mortality rate of these patients.

[Cardiac failure caused by intrapericardial chronic expanding hematoma 18 years after CABG].

Chronic expanding hematoma(CEH)was first recognized by Reid in 1980. It begins to expand chronically more than 1 month after surgery or trauma, which is considered the possible cause of bleeding. It resembles chronic subdural hematoma.

Left atrial myxoma complicated with an acute upper extremity embolism.

Atrial myxoma is the most common benign tumor of the heart. Patients who have atrial myxoma usually present with cardiac obstruction, arrhythmia, or peripheral embolization. We encountered an unusual case of acute upper extremity ischemia due to a massive atrial myxoma in a young man.

[Characteristic evaluation and clinical usefulness of dose area product meter at radiography].

Philips DigitalDiagnost, a digital radiographic system mounting flat panel detector (FPD), can display dose area data (DiDi dose) calculated by examination parameters. We evaluated its fundamental characteristics and compared the values of DiDi dose andactual measured data obtained by the area dose product meter (PD-4100L). Tendency of varied values of mAs, X-ray tube values and exposure area from both the area dose product meter and the DiDi dose were coincided.