Effect of index thickness on the accuracy of direct restorations using composite resin injection technique with VPS indices.

Objectives: To evaluate the accuracy of direct restorations using transparent vinyl polysiloxane (VPS) indices with different thicknesses for composite resin injection technique.

Methods: Thirty-six standard resin teeth of tooth #11 were divided into 3 groups based on the index thickness including 2, 4, and 6 mm (n = 12). VPS indices were fabricated using customized trays corresponding to each thickness.

Exploring Relationships Between Circulating Interleukins and Pulp and Periapical Diseases: A Bidirectional Mendelian Randomization Study.

Introduction: The aim of this study was to comprehensively evaluate the links of genetic predisposition among 13 common circulating interleukins (ILs) and endodontic diseases by using a 2-sample Mendelian randomization method.

Methods: Single nucleotide polymorphisms were chosen as instrumental variables from summary data of genome-wide association studies (GWASs), using the inverse-variance-weighted method as the primary analysis. In addition, a variety of sensitivity analyses was conducted to evaluate the resilience of the primary outcomes and identify any inherent pleiotropic effects.

Configurable multiple virtual lenses conjugated with singlet physical lens for achromatic extended depth-of-field imaging.

An achromatic extended depth-of-field (EDOF) system can obtain clear scene information that is crucial for target recognition, dynamic monitoring, and other applications. However, the imaging performance of most optical systems is depth-variant and wavelength-variant, which leads to the generation of chromatic aberrations. Traditional optical design and image post-processing algorithms cannot effectively eliminate these chromatic aberrations.

Chairside live biotherapeutic hydrogel for comprehensive periodontitis therapy.

Periodontitis, characterized by microbial dysbiosis and immune dysregulation, destroys tooth-supporting tissues and negatively affects overall health. Current strategies face significant challenges in restoring damaged tissues while halting periodontitis progression. In this study, we introduce a live biotherapeutic product (LBP) in an engineered living hydrogel for comprehensive periodontitis therapy.

Masking ability of CAD-CAM resin-matrix ceramics with different translucencies and thicknesses combined with four cement shades against varying background colors when facing veneer restorations.

Background: To evaluate the comprehensive effect of translucency, thickness, cement shades, and background color on the masking ability of resin-matrix ceramic veneer restorations.

Methods: Resin-matrix ceramic specimens with 2 translucencies (LT, HT) and 3 thicknesses (0.5, 1.

Comparison of three implant systems under preload loss: A finite element analysis validated by digital image correlation methods.

Purpose: This study evaluated the effects of screw preload loss on three implant systems, both in silico and in vitro.

Methods: Three finite element analysis (FEA) models of implant restorations were created using bone-level (BL, 4.8×12 mm; BLX, 4.

Effects of stamp material and restoration depth on the accuracy of direct composite resin restorations using stamp technique.

Objectives: To evaluate the effects of different stamp materials and restoration depths on the accuracy of direct composite resin restorations using stamp technique.

Methods: Eighty standard resin teeth were divided into four groups based on different stamp materials: flowable composite resin (FR), vinyl polydimethyl siloxane (VPS) for bite registration (VB), VPS for impression (VI) and transparent VPS (TV). Each material group was further divided into two subgroups based on restoration depth (1 and 2 mm; n = 10).

Influence of short-span scans on trueness in the digital transfer of the maxillomandibular relationship.

Objectives: This study aimed to assess the influence of the location and distribution of short-span scans, serving as intermediate registration data, on the trueness of digitally transferring the maxillomandibular relationship in full-mouth rehabilitation.

Methods: Maxillary and mandibular complete-arch preparation casts mounted on an articulator were scanned, with and without interim restorations, using an intraoral scanner. Four types of short-span scans-right anterior, left anterior, right posterior, and left posterior-were captured from maxillary and mandibular casts.

Application of Chairside CAD/CAM and Its Influencing Factors among Chinese Dental Practitioners: a Crosssectional Study.

Objective: To examine the increased use of chairside CAD/CAM among Chinese dental practitioners, and to explore the existing barriers influencing its further application and satisfaction levels.

Methods: A semi-structured questionnaire was developed to gather respondents' demographic information, as well as their experiences and behaviours regarding the implementation of chairside CAD/CAM. A specialised web-based survey system and WeChat were used to display and distribute the final questionnaire.

An NIR-propelled janus nanomotor with enhanced ROS-scavenging, immunomodulating and biofilm-eradicating capacity for periodontitis treatment.

Periodontitis is an inflammatory disease caused by bacterial biofilms, which leads to the destruction of periodontal tissue. Current treatments, such as mechanical cleaning and antibiotics, struggle to effectively address the persistent biofilms, inflammation, and tissue damage. A new approach involves developing a Janus nanomotor (J-CeM@Au) by coating cerium dioxide-doped mesoporous silica (CeM) with gold nanoparticles (AuNPs).

Influence of prosthetic index structures and implant materials on stress distribution in implant restorations: a three-dimensional finite element analysis.

Background: Mechanical complications affect the stability of implant restorations and are a key concern for clinicians, especially with the frequent introduction of new implant designs featuring various structures and materials. This study evaluated the effect of different prosthetic index structure types and implant materials on the stress distribution of implant restorations using both in silico and in vitro methods.

Methods: Four finite element analysis (FEA) models of implant restorations were created, incorporating two prosthetic index structures (cross-fit (CF) and torc-fit (TF)) and two implant materials (titanium and titanium-zirconium).

Evaluation of direct restorations for pit-and-fissure caries using stamp combined with single-shade composite resin technique: A 12-month follow-up in vivo study.

Objectives: To evaluate the clinical performance of direct restorations for pit-and-fissure caries in molars using stamp combined with single-shade composite resin (S/SCR) technique, and assess the effect of the number of stamp pressing on the trueness of S/SCR technique.

Methods: Twenty molars of fifteen patients with pit-and-fissure caries but with an intact or micro-cavitated occlusal morphology were restored using S/SCR technique and were randomly divided into single pressing group (n = 10) and double pressing group (n = 10). Intraoral scans were obtained before treatment (scan 1), after filling (scan 2) and after polishing (scan 3).

Erythrocyte-Mimicking Nanovesicle Targeting for Periodontitis.

has been demonstrated to have the strongest association with periodontitis. Within the host, relies on acquiring iron and heme through the aggregation and lysis of erythrocytes, which are important factors in the growth and virulence of . Additionally, the excess obtained heme is deposited on the surface of , protecting the cells from oxidative damage.

Esthetic rehabilitation of labial tooth defects caused by caries of the anterior teeth using a composite resin injection technique with veneer-shaped 3D printing indices.

Patients: An 18-year-old woman sought treatment for caries of the anterior teeth after completing orthodontic treatment. Direct composite resin restoration was chosen because the patient preferred a minimally invasive and cost-effective treatment whenever possible. Based on diagnostic wax-up, veneer-shaped indices for composite resin injection were designed to replicate and restore tooth defects rapidly and accurately.

Different surface treatments and adhesive monomers for zirconia-resin bonds: A systematic review and network meta-analysis.

This review examined the efficacy of surface treatments and adhesive monomers for enhancing zirconia-resin bond strength. A comprehensive literature search in PubMed, Embase, Web of Science, Scopus, and the Cochrane Library yielded relevant in vitro studies. Employing pairwise and Bayesian network meta-analyses, 77 articles meeting inclusion criteria were analyzed.

Nutrient requirements determined by grain yield and protein content to optimize N, P, and K fertilizer management in China.

Nutrient requirement for crop growth, defined as the amount of nutrient that crops take up from soil to produce a specific grain yield, is a key parameter in determining fertilizer application rate. However, existing studies primarily focus on identifying nitrogen (N), phosphorus (P), and potassium (K) requirements solely in relation to grain yield, neglecting grain protein content, a crucial index for wheat grain quality. Addressing this gap, we conducted multi-site, multi-cultivar, and multi-year field trials across three ecological regions of China from 2016 to 2020 to elucidate variations in nutrient requirements for grain yield and grain protein.

A digital guide device to facilitate CAD-CAM veneer cementation for mandibular incisors: A dental technique.

The novel design of a digital guide to facilitate the cementation of computer-aided design and computer-aided manufacturing (CAD-CAM) veneers for mandibular incisors by using a polymer infiltrated ceramic network (PICN) material is described. This guide provided an efficient, reliable, and accurate approach to facilitating multiple veneers with minimally invasive preparation during cementation, reducing the technique sensitivity of freehand practice and chairside time.

Does an incomplete ferrule affect the fracture of endodontically treated teeth? A systematic review of in vitro studies.

Objective: The purpose of this systematic review was to assess the impact of the incomplete ferrule on the fracture of endodontically treated teeth (ETT).

Data: The keywords such as "incomplete ferrule," "ferrule," "ferrule effect," "residual dentin," "remaining dentin," or "remaining coronal dentin" were used for searching, and only in vitro studies investigating the incomplete ferrule effect on natural teeth were included.

Sources: PubMed, Medline, Embase, Cochrane Library, and Science Direct databases, and manual-searching.

Advances in ceramics for tooth repair: From bench to chairside.

Objectives: To give a comprehensive review of advancement in dental ceramics, fabrication methods, and the challenges associated with clinical application.

Data, Sources And Study Selection: Researches on chemical composition, biomechanical behaviors, optical properties, bonding strategies and fabrication methods were included. The search of articles was independently conducted by two authors in the PubMed, Scopus, Medline and Web of Science.

Application of deep learning in isolated tooth identification.

Background: Teeth identification has a pivotal role in the dental curriculum and provides one of the important foundations of clinical practice. Accurately identifying teeth is a vital aspect of dental education and clinical practice, but can be challenging due to the anatomical similarities between categories. In this study, we aim to explore the possibility of using a deep learning model to classify isolated tooth by a set of photographs.

IRX5 suppresses osteogenic differentiation of hBMSCs by inhibiting protein synthesis.

In our previous study, IRX5 has been revealed a significant role in adipogenesis of hBMSCs. Considering the expansion of adipose tissue in bone marrow in aged and ovariectomy-related osteoporosis, the effect of IRX5 on the osteogenesis of BMSCs still needs to be elucidated. In vivo, models of aging-induced and ovariectomy-induced osteoporotic mice, and in vitro studies of IRX5 gene gain- and loss-of-function in hBMSCs were employed.

Association of periodontitis with gastrointestinal tract disorders: A bidirectional Mendelian randomization study.

Background: The bidirectional link of periodontitis (PD) and gastrointestinal tract (GIT) disorders has been investigated in previous epidemiological studies; however, the conclusions still remain controversial. The aim of this study was to comprehensively explore the bidirectional causal effect between PD and various GIT diseases.

Methods: Based on summary-level data of genome-wide association studies (GWASs), a two-sample bidirectional Mendelian randomization (MR) study was undertaken.

Effect of aging and bleaching on the color stability and surface roughness of a recently introduced single-shade composite resin.

Objectives: To assess the effects of aging and bleaching procedures on the color stability and surface roughness of a new single-shade composite versus multi-shade composite resins.

Methods: A single-shade composite resin (Charisma Diamond One, CDO) and 3 multi-shade composite resins (Tetric NCeram, Filtek Z350 XT, Clearfil Majesty Posterior) were tested. Thirty specimens of each material were subjected to one of the aging procedures respectively: immersion in distilled water (12 days/37 °C), immersion in coffee (12 days/37 °C), or water thermocycling (10,000 cycles/5-55 °C).

The research on the particle concentration distribution of directed airflow in cleanrooms for operators.

Existing research of non-unidirectional cleanrooms generally suggests that lower-side return air outlets provide better control effect on indoor particle concentration. As a result, there has been relatively less focus on return air outlets. However, installing return air outlets oriented towards operators as particle emission sources can reduce the impact on process layout and improve space utilization, while also provide less impact from upper particle emission sources on the workbench area.

Association between pulp and periapical disease with type 2 diabetes: A bidirectional Mendelian randomization.

Aim: This current Mendelian randomization (MR) study aims to comprehensively explore the potential bidirectional link between pulp and periapical disease (PAP) with type 2 diabetes mellitus (T2DM).

Methodology: Summary level data of European-based population genome-wide association studies (GWASs) were employed to undertake this MR study. With the selection of single nucleotide polymorphisms (SNPs) as the instrumental variable, the radial inverse-variance weighted (radial IVW) method with modified second-order weights was applied as the primary method.