Pancreatic Heterotopia in the Biliary Cyst Wall of a Pregnant Patient and Literature Review.

Pancreatic heterotopia is the presence of pancreatic tissue in a different anatomical location with no connection to the main pancreas. The most common locations in the gastrointestinal system are duodenum, stomach, and Meckel diverticulum. However, it is quite rare in the hepatobiliary system.

Evaluation of an artificial intelligence system for the diagnosis of apical periodontitis on digital panoramic images.

Aims: The aim of the present study was to evaluate the effectiveness of an artificial intelligence (AI) system in the detection of roots with apical periodontitis (AP) on digital panoramic radiographs.

Materials And Methods: Three hundred and six panoramic radiographs containing 400 roots with AP (an equal number for both jaws) were used to test the diagnostic performance of an AI system. Panoramic radiographs of the patients were selected with the terms 'apical lesion' and 'apical periodontitis' from the archive and then with the agreement of two oral and maxillofacial radiologists.

Effect of material type, torque value, and sterilization on linear displacements of a scan body: An in vitro study.

Background: There is limited knowledge on the effect of scan body (SB) material type, torque value, and sterilization on linear displacements of implant SBs.

Purpose: To evaluate the effect of material type, torque value, and sterilization on linear displacements of SBs during screw tightening by using digital image correlation (DIC) analysis.

Materials And Methods: One polyetheretherketone (PEEK, Zfx Intraoral Scan Body) and one titanium SB (Ti, MPS Zimmer Scanbody R1410) were tightened with 5 Ncm torque on two implants (Zimmer TSV ⌀4.

In Silico Finite Element Analysis of Implant-Supported CAD-CAM Resin Composite Crowns.

Purpose: The aim of this study was to evaluate the mechanical behavior of an implant-supported crown made using computer-aided design and computer-aided manufacturing (CAD-CAM) resin composite (RC) blocks in the posterior region.

Material And Methods: Four commercially available CAD-CAM RC blocks were used in this study: Cerasmart 300 (CS300; GC, Tokyo, Japan), Katana Avencia P Block (KAP; Kuraray Noritake Dental, Niigata, Japan); KZR HR3 Gamma Theta (HR3; Yamakin, Osaka, Japan), and Estelite P block (ESP; Tokuyama Dental, Tokyo, Japan). Katana Zirconia STML (ST; Kuraray Noritake Dental) was used as the control group.

Evaluation of strain values of critical anatomic regions for two different pterygomaxillary approaches in Le Fort I osteotomy: An experimental study.

Background: The purpose of this experimental study was to measure stresses both on the pterygoid plates and the skull base following two different pterygomaxillary approaches in Le Fort I osteotomy.

Material And Methods: The prepared skull models were randomly divided into 2 groups of 7. In the first group (A), the pterygomaxillary area was left intact.

Stress distribution in reduced periodontal supporting tissues surrounding splinted teeth.

The aim of this study was to analyze the distribution of occlusal stresses for splinted and nonsplinted mandibular anterior incisors and to compare different splinting materials. A mandibular model was generated from a patient's computed tomography scan using three-dimensional (3D) software. The mandibular model presented with four periodontally compromised incisors and two canines with optimal bone support (two-thirds crown-root ratio).

Macro design effects on stress distribution around implants: a photoelastic stress analysis.

Objectives: Biomechanics is one of the main factors for achieving long-term success of implant supported prostheses. Long-term failures mostly depend on biomechanical complications. It is important to distinguish the effects of macro design of the implants.

In vivo and in vitro assessment of an intraoral dental colorimeter.

Purpose: The purpose of this study was to assess the performance of an intraoral dental colorimeter.

Materials And Methods: In vivo repeatability of an intraoral colorimeter was assessed by performing color measurements of 30 individuals' right maxillary central incisor. Three consecutive measurements from each individual were made.

The effect of different shades of specific luting agents and IPS empress ceramic thickness on overall color.

The color stability of both porcelain and luting materials is very important for the esthetics of laminate veneers and all-ceramic crowns. The purpose of this study was to determine the effect of different shades of resin-based luting cement and the thickness of IPS Empress ceramics on the final color of the restorations. Resin-based dual-polymerized composite cement in two different shades (RelyX ARC) and ceramic disks of different thicknesses were selected for the study.

Restoration of endodontically compromised anterior teeth with fiber posts and zirconia all-ceramic system. Case study.

Deciding what material to use to restore endodontically treated teeth complicated by total or partial loss of coronal tooth structure is sometimes difficult for the clinician. It is important to use materials that minimize risk and best accommodate clinical conditions and patient desires. This report describes the restoration of endodontically compromised maxillary incisors with fiber posts and a zirconia all-ceramic system.

The use of a computerized tomography-based software program with a flapless surgical technique in implant dentistry: a case report.

Successful implant treatment includes osseointegration, as well as prosthetically optimal positions of the implants for esthetics and function. The aim of this study is to evaluate a patient that was treated with an implant-supported fixed prosthesis with the help of computer-assisted three-dimensional planning. A 52-year-old edentulous man underwent computerized tomographic (CT) scanning, and the cross sections were reformatted.

Interdisciplinary treatment of multiple maxillary anterior diastemas: case report.

This article describes an interdisciplinary (orthodontic and prosthodontic) approach for treating a 28-year-old woman who had multiple maxillary anterior diastemas, insufficient lip support, and inadequate anterior guidance. Although the patient also had diastemas among her mandibular anterior teeth, she declined orthodontic or restorative treatment for this arch. Initially, ceramic orthodontic brackets and polytetrafluoroethylene-coated arch wires were used.

Design and implementation of a random neural network routing engine.

Random neural network (RNN) is an analytically tractable spiked neural network model that has been implemented in software for a wide range of applications for over a decade. This paper presents the hardware implementation of the RNN model. Recently, cognitive packet networks (CPN) is proposed as an alternative packet network architecture where there is no routing table, instead the RNN based reinforcement learning is used to route packets.

Assessment of bone density differences between conventional and bone-condensing techniques using dual energy x-ray absorptiometry and radiography.

Objectives: We used dual energy x-ray absorptiometry (DEXA) and periapical radiography to assess bone density differences after conventional and bone-condensing dental implant techniques.

Study Design: Single-tooth dental implants were placed by both conventional and bone-condensing techniques in 14 patients with bilateral missing teeth. Dual energy x-ray absorptiometry was used to calculate bone mineral density (BMD) and bone mineral content (BMC) before and 6 and 12 months after implant placement.

Preoperative nutritional risk assessment in predicting postoperative outcome in patients undergoing major surgery.

Introduction: Although a variety of nutritional indices have been found to be valuable in predicting patient outcome when used alone, there is no consensus on the best method for assessing the nutritional status of hospitalized patients. Therefore, the aim of this study was to assess the nutritional status of a cohort of patients who underwent major elective surgery using the Nutritional Risk Index (NRI), Maastricht Index (MI), Subjective Global Assessment (SGA), and Mini Nutritional Assessment (MNA) to determine the best possible nutrition screening system in surgical practice.

Methods: The study population consisted of 460 patients who underwent major elective surgery between December 1999 and March 2002.

Assessment of whole saliva flow rate in denture wearing patients.

It has been suggested that salivary flow rate decreases with age. As is known, the presence of a thin salivary film layer is essential for the comfort of the mucosa beneath a denture base and for denture retention. The purpose of this study was to determine the flow rates, viscosity and the pH of resting and stimulated whole saliva before and after prosthetic treatment in complete denture wearing patients.

Bond strength and failure analysis of lining materials to denture resin.

Objectives: This study was conducted to investigate the bonding properties of five lining materials to a denture base resin. Two hard (chemical-cured resin: Kooliner "Coe Labs, USA" and light-cured VLC resin: Triad "Dentsply, USA") and three soft (chemical-cured resin: Express "Alcos,-USA", heat-temperature vulcanized 'HTV' silicone material: Molloplast-B "Regneri GmbH, Germany" and room-temperature vulcanized 'RTV' silicone material:Ufi Gel-P "Voco, Germany") liners were used.

Methods: Paladent 20 "Heraeus Kulzer GmbH, Germany", a conventional heat-cured polymethylmethacrylate (PMMA), was used as the denture base resin and as the control material.

Wetting properties of saliva substitutes on acrylic resin.

The good wetting of the acrylic resin by saliva substitutes is of clinical importance in xerostomic patients. This study evaluated the wetting properties of different artificial saliva formulations that were mucin-based, carboxymethylcellulose-based, and concentrated ion-based on poly(methyl methacrylate) denture base resin, and compared these properties with natural saliva. The wetting properties of the test materials were examined by contact angle measurements.