Deep Learning-Based Nystagmus Detection for BPPV Diagnosis.

In this study, we propose a deep learning-based nystagmus detection algorithm using video oculography (VOG) data to diagnose benign paroxysmal positional vertigo (BPPV). Various deep learning architectures were utilized to develop and evaluate nystagmus detection models. Among the four deep learning architectures used in this study, the CNN1D model proposed as a nystagmus detection model demonstrated the best performance, exhibiting a sensitivity of 94.

Predictive values of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and other prognostic factors in pediatric vestibular neuritis patients.

Objective: To analyze the relationship between severity and hemodynamic factor in pediatric vestibular neuritis patients and find out their effectiveness as a prognostic factor.

Study Design: Retrospective review.

Setting: Tertiary medical center.

Fully digital workflow for the fabrication of a tooth-colored space maintainer for a young patient.

Objectives: Preventive orthodontic therapy with a band and loop is recommended to reduce the prevalence and severity of malocclusion on premature loss of a primary molar. However, when young patients are less cooperative and have a severe gag reflex, using traditional impression methods may be challenging. The use of a conventional metal space maintainer (SM) requires manual laboratory procedures and does not provide optimal esthetics.

Digital Workflow for Establishing the Posterior Palatal Seal on a Digital Complete Denture.

The posterior palatal seal (PPS) plays important roles in improving denture retention, preventing food and debris from entering under the denture base, reducing the gag reflex, providing more strength across the denture, and making the distal border less noticeable to the tongue. Digital dentures have become popular, owing to the use of computer-aided design and computer-aided manufacturing and rapid prototyping technologies. However, limited research has been conducted on a digital workflow to establish the PPS.

Digital approach to fabricating a retrofitted abutment for reuse of an existing implant-supported fixed partial denture after the failure of an implant.

The failure of an implant that supports an implant-supported fixed partial denture (ISFPD) may result in a failure of the prosthesis. Although fabricating a new ISFPD after replacing the implant is ideal, patients may hope to reuse the existing ISFPD because of financial constraints. A technique for rescuing a 6-unit metal-ceramic ISFPD with computer-aided design and computer-aided manufacturing (CAD-CAM) technology is described.

Fabricating a custom tray for an impression of multiple abutment teeth by using an open-source software program.

Although intraoral scanners have gained in popularity, the traditional impression technique with a custom tray is still useful, particularly when making a definitive impression of multiple abutment teeth. A custom tray can be fabricated with a dental software program, avoiding the disadvantages of the manual laboratory procedures. However, additional module purchasing is necessary.

Predictive Values of Neutrophil-to-Lymphocyte Ratio, Platelet-to-Lymphocyte Ratio, and Other Prognostic Factors in Pediatric Patients With Bell's Palsy.

Background And Objectives: Bell's palsy (BP) is the most frequent cause of unilateral facial paralysis, and inflammation is believed to play an important role in pathogenesis. Due to its rarity, however, no consensus has been reached regarding optimum treatment or factors affecting prognosis. In the present study, treatment outcomes and prognostic factors of BP were investigated in pediatric patients who underwent steroid therapy.

A completely digital approach to scanning dental implants placed in a limited space or with an adverse angulation.

Unfavorable implant placement may cause difficulties in making implant impressions or scans. If the impression posts or scan bodies cannot be properly seated on the implants because of contact between them, adjustment with a rotary instrument or the use of gold cylinders is necessary. This article introduces a technique for obviating the clinical difficulties without the need to adjust the impression posts or scan bodies or the use of gold cylinders.

Fabricating a crown under an existing removable partial denture with impression scanning and CAD-CAM technology.

Retrofitting a new crown to an existing removable partial denture (RPD) is a challenging procedure. Recently, intraoral scanners (IOSs) have been successfully used to solve this issue. However, purchase of IOSs is necessary, and most clinicians still use the conventional impression technique.

Digital approach to fabricating an implant indexing device for dental implant abutments.

When dental implant abutments are fabricated, the use of an implant indexing device (IID) is recommended to evaluate the accuracy of a definitive cast. An IID is also useful to position multiple implant abutments on implants. Several methods have been used to fabricate an IID.

Design concept for preventing aspiration or ingestion of CAD-CAM crowns: A dental technique.

Accidental aspiration or ingestion of a crown is a risk during dental treatment. To prevent this, dental floss can be tied to a loop attached to the lingual surface of the crown. However, the method needs an additional laboratory procedure and is applicable only to cast crowns.

Predictive values of neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), and other prognostic factors in pediatric idiopathic sudden sensorineural hearing loss.

Background And Objectives: No consensus has been reached regarding the optimum treatment or factors affecting prognosis in pediatric idiopathic sudden sensorineural hearing loss (ISSNHL) due to its rarity. In the present study, treatment outcomes and prognostic factors of ISSNHL were investigated in pediatric patients who underwent steroid therapy.

Subjects: and Methods: Forty-two patients diagnosed with ISSNHL were enrolled in this retrospective study and compared with 39 normal healthy controls with respect to demography and complete blood cell count test results.

Fabricating a reduction guide for parallel guiding planes with computer-aided design and computer-aided manufacturing technology.

Preparing appropriate guiding planes is essential for the success of a removable partial denture. Owing to the difficulty of determining the location and dimension of proximal reduction, establishing optimal guiding planes may challenge even skilled clinicians. This article introduces a digital workflow for fabricating a reduction guide to establish parallel guiding planes.

GM1 Induced the inflammatory response related to the Raf-1/MEK1/2/ERK1/2 pathway in co-culture of pig mesenchymal stem cells with RAW264.7.

Pig-human xenotransplantation can trigger cell-mediated immune responses. We explored the role of gangliosides in inflammation related to immune rejection in xenotransplantation. Co-culture of xenogeneic cells (pig-MSCs and RAW264.

Effect of the Surface Treatment Method Using Airborne-Particle Abrasion and Hydrofluoric Acid on the Shear Bond Strength of Resin Cement to Zirconia.

The purpose of this study was to evaluate the shear bond strength (SBS) of two different resin cements (Panavia F 2.0 (Kuraray Medical Inc, Okayama, Japan) and Variolink N (Ivoclar Vivadent AG, Schaan, Liechtenstein)) to 112 zirconia specimens with airborne-particle abrasion and 20%, 30%, or 40% hydrofluoric acid (HF) for 1 or 2 h. A total of eight specimens were used to observe the phase transformation after surface treatments.

Fabricating a custom zirconia post-and-core without a post-and-core pattern or a scan post.

Due to the increased esthetic demands, custom zirconia post-and-cores have recently become popular. A post-and-core pattern with acrylic resin or wax is scanned using a laboratory scanner for the design of a definitive post-and-core restoration. This procedure requires additional time and material handling experience.

Guided tooth preparation for a pediatric zirconia crown.

Background And Overview: Unesthetic primary incisors can produce negative self-perceptions in preschool-aged children. In recent years, because of increased esthetic demands, prefabricated zirconia crowns have become increasingly popular. However, zirconia crowns cannot be crimped, and the clinician must prepare the teeth to fit the zirconia crowns.

A Digital Approach to Retrofitting a Post and Core Restoration to an Existing Crown.

One problem that may arise in full-coverage restorations is clinical crown fracture. Fracture of an endodontically treated and crowned tooth in the esthetic zone may be embarrassing to both the patient and clinician. If a completely sound margin and at least 2 mm of coronal structure remain, a fractured tooth may possibly be retreated by a repair.

Efficacy of Posterior Canal Wall Reconstruction Using Autologous Auricular Cartilage and Bone Pâté in Chronic Otitis Media with Cholesteatoma.

Objective: This study was designed to investigate the long-term results using the technique of canal wall up mastoidectomy and reconstruction of the posterior canal wall using bone pâté and auricular cartilage in the treatment of chronic otitis media with cholesteatoma.

Materials And Methods: A retrospective review was performed on 42 patients who underwent canal wall up mastoidectomy and posterior canal wall reconstruction at a single institution between November 2005 and November 2012.

Results: Of the 42 patients, postoperative tympanic membranes were normal in 38 (90.