L-shape technique with concentrated growth factor for horizontal bone defects in the maxillary anterior region: a clinical and radiographic study.

Objectives: To study the clinical effect of the L-shape technique combined with concentrated growth factor on the horizontal bone defects of maxillary anterior teeth.

Methods: Twenty-five implants from 25 patients who underwent single maxillary anterior tooth implantation with simultaneous bone grafting were selected as the study subjects. Based on the bone grafting techniques, the patients were divided into a test group (L-shaped technique with guided bone regeneration combined with concentrated growth factor, 11 cases) and a control group (traditional guided bone regeneration combined with concentrated growth factor, 14 cases).

Influence of the Type of Bulk-Fill, Resin-Based Composite on Internal Adaptation in Class V Restorations.

Objective: To investigate the effects of bulk-fill, resin-based composite types (high or low viscosity) on the internal adaptation of Class V restorations.

Study Design: Experimental study. Place and Duration of the Study: Hefei Stomatological Hospital, Hefei, China, from October 2022 to December 2023.

[Analysis of root development of maxillary inverted impacted central incisor before and after orthodontic traction by CBCT].

Purpose: To investigate the changes of root development before and after orthodontic traction of maxillary inverted impacted central incisors using CBCT and Mimics software.

Methods: Ten patients, who had a maxillary inverted impacted central incisor, were treated using a modified movable retractor combined with surgical eruption. Cone-beam computed tomography(CBCT) was taken before and after treatment.

Association of Di(2-ethylhexyl) Phthalate Exposure with Reproductive Hormones in the General Population and the Susceptible Population: A Systematic Review and Meta-Analysis.

Di(2-ethylhexyl) phthalate (DEHP), an environmental endocrine disruptor, has hormone-like activity and endocrine-disrupting effects. However, the types of reproductive hormones associated with DEHP vary across the studies. Thus, we conducted a systematic review and meta-analysis to pool existing epidemiological evidence.

[Effect of dual-wavelength laser combined with bioceramics iRoot SP to assist molar root canal treatment].

Purpose: To investigate the effect of dual-wavelength laser combined with bioceramics material iRoot SP on molar root canal treatment.

Methods: A total of 104 patients receiving root canal treatment from January 2020 to June 2023 were selected and divided into control group and experimental group according to random number table method, with 52 cases in each group. The control group was treated with iRoot SP paste, and the experimental group was treated with dual-wavelength laser(Nd:YAG and Er:YAG) combined with iRoot SP paste.

Breaking the boundaries of wound closure: A novel polyurethane tissue adhesive with enhanced healing properties.

Over the past few decades, there have been advancements in the development of high-performance tissue adhesives as alternatives to traditional sutures and staples for rapid and effective wound closure post-surgery. While tissue adhesives offer advantages such as ease of use, short application time, and minimal tissue damage, they also face challenges related to biocompatibility, biodegradability, and adhesive strength. In this study, L-lysine diisocyanate (LDI) and trimethylolpropane (TMP) were utilized as the primary raw materials to produce a prepolymer terminated with NCO, resulting in the development of a new biocompatible polyurethane tissue adhesive (TMP-LDI).

Endodontic microsurgery and prosthodontic treatment of a permanent anterior concrescence: A case report.

Concrescence is a rare dental anomaly in which two adjacent teeth are united only by their cementum. Concrescence most frequently occurs in molars, especially a third mandibular molar and a supernumerary tooth. It is rarely seen in the maxillary anterior teeth.

Three-dimensional finite element analysis of the optimal mechanical design for maximum inward movement of the anterior teeth with clear aligners.

This study aims to refine clinical designs within clear aligner therapy, exploring the appropriate ratio of anterior tooth retraction to intrusion under maximum anchorage. Using a three-dimensional finite element model and evaluating 19 load scenarios with first premolar extraction, the research identifies the optimal force angle for anterior tooth retraction as 45 to 55°. For clinical planning, it is recommended to design a retraction of 0.

Enhancing the Solubility, Stability, and Bioavailability of Retinol Acetate through Mechanochemistry.

This study utilizes mechanochemistry to prepare retinol acetate (RA) solid dispersion (RA-sodium starch octenyl succinate (SSOS)), resulting in improved solubility, stability, and bioavailability compared with raw RA and commercial RA microcapsules. RA, poloxamer 188, SSOS, and milling beads (8 mm) were mixed in a ratio of 2:1:8:220 (w/w) and ball-milled at 100 rpm for 3 h. RA-SSOS exhibited a solubility of 1020.

Periodontitis is associated with altered brain structure and function in normal cognition middle-aged and elderly individuals.

Background: Numerous studies have proposed that periodontitis is a potential risk factor for Alzheimer's disease. However, the association between periodontitis and brain normal cognition in aged and elderly individuals (NCs) is unclear. Such a link could provide clues to Alzheimer's disease development and strategies for early prevention.

Effect of Ultrasonic Irrigation Combined with Epoxy Resin Paste in Single Visit Root Canal Treatment in Chronic Pulpitis.

Objective: To determine the clinical efficacy of ultrasonic irrigation combined with epoxy resin-based sealer in single visit root canal treatment of chronic pulpitis.

Study Design: Randomised controlled trial. Place and Duration of the Study: Department of Stomatology, Hefei BOE Hospital, Hefei, China, from March 2019 to December 2021.

[Long-term quality of life in patients with BrownⅡ maxillary defect repaired by different methods].

To analyze the long-term quality of life of patients with Brown Ⅱ maxillary defect repaired by tissue flap or prosthesis. Patients who underwent surgery for maxillary malignant tumors in the First Affiliated Hospital of Bengbu Medical College from 2014 to 2017 were selected to investigate the postoperative long-term (>5 years) quality of life using the fourth edition of the University of Washington quality of life questionnaire (UW-QOL). Mann Whitney test was used to examine the differences between two groups.

The association between greenery type and gut microbiome in schizophrenia: did all greenspaces play the equivalent role?

In recent years, attention has been focused on the benefit of greenspace on mental health, and it is suggested this link may vary with the type of greenspace. More and more studies have emphasized the influence of the gut microbiome on schizophrenia (SCZ). However, the effects of greenspaces on the gut microbiota in SCZ and the effect of different types of greenspaces on the gut microbiota remain unclear.

[Clinical study of a adjustable movable retractor for maxillary labially inverted impacted central incisor].

Purpose: To evaluate the orthodontic treatment outcome of a new adjustable movable retractor for patients with maxillary labially inverted impacted central incisors.

Methods: Ten patients, aged 7 to 10 years, who had a maxillary labially inverted impacted central incisor, were treated using a new adjustable movable retractor. Cone-beam CT(CBCT) was taken before treatment and after treatment immediately.

Uptight responses between clenching and forearm raising with factors of visual feedback and maintenance effort in healthy young women: An experimental study on factorial design.

Background: To achieve different central preset force levels requires various fine-tuning efforts and may elicit different uptight responses. The mandibular lever system has a distinct regularity in the fine-tuning function of the upper limbs. The purpose of the present study was to detect whether the uptight responses elicited from motivating clenching differ from those induced by motivating forearm raising at different force levels.

Comparative frenectomy with conventional scalpel and dual-waved laser in labial frenulum.

Aim: The purpose of the study is to compare the labial frenectomy between the laser surgery (erbium yttrium aluminum garnet and neodymium-doped yttrium aluminum garnet (Er:YAG and Nd:YAG)) and the scalpel method.

Methods: The trial was a randomized controlled test. Thirty four patients aged from 5 to 10 years requiring the frenectomy were included in this study.

Effect of platelet-rich plasma on the attachment of periodontal ligament fibroblasts to the diseased root surface and the attendant collagen formation.

Objective: To investigate the effect of different concentrations of platelet-rich plasma (PRP) on collagen formation via periodontal ligament fibroblasts (PDLFs) on the surface of demineralised diseased tooth roots.

Methods: Various PDLFs were grown from tissue explants, with the cells between the fifth and eighth passage in the culture used. Human whole blood obtained from healthy subjects was collected in tubes containing an anticoagulant (acid-citrate-dextrose) and centrifuged (1300 rpm for 10 min) before the supernatant PRP layer was removed.

Effect of archwire plane and archwire size on anterior teeth movement in sliding mechanics in customized labial orthodontics: a 3D finite element study.

Background: The aim of this study was to evaluate anterior teeth movement with different archwire planes and archwire sizes during space closure with and without miniscrew in sliding mechanics.

Methods: A 3D finite element method was applied to simulate anterior teeth retraction with and without miniscrew and power arm. Initial displacements and pressure stresses of periodontal tissue in anterior teeth were calculated after the teeth were applied with retraction forces with different archwire planes and archwire sizes.