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关键词： 固定保持器   计算机辅助设计/计算机辅助制造舌侧丝   麻花舌侧丝   牙弓稳定性   脱落率   牙周健康  

摘要： 目的比较压膜保持器联合新型计算机辅助设计/计算机辅助制造(CAD/CAM)技术生产的纯钛舌侧丝或传统不锈钢麻花舌侧丝对正畸治疗结束后患者保持效果的影响。方法选取西安交通大学口腔医院自2023年7月至2024年7月收治的接受固定矫治或隐形矫治结束的80例患者为研究对象。将患者随机分入A组和B组,每组各40例。A组正畸治疗结束后接受压膜保持器联合不锈钢麻花舌侧丝保持;B组正畸治疗结束后接受压膜保持器联合CAD/CAM技术生产的纯钛舌侧丝保持。在矫治器拆除时(T0)佩戴保持器,并在保持器戴用6个月时(T1)及12个月时(T2)进行随访。比较两组的牙弓稳定性指标、舌侧丝脱落率及牙周指标。结果与T0比较,两组T1、T2的下颌前牙不齐指数均增大,A组T2的下颌尖牙牙弓宽度缩小,差异有统计学意义(P<0.05)。B组上颌尖牙牙弓宽度、下颌尖牙牙弓宽度变化值小于A组,差异有统计学意义(P<0.05)。两组舌侧丝脱落率比较,差异无统计学意义(P>0.05)。B组T2的下颌舌侧出血指数、下颌菌斑指数均低于A组,差异有统计学意义(P<0.05)。结论与压膜保持器联合传统不锈钢麻花舌侧丝比较,压膜保持器联合CAD/CAM纯钛舌侧丝能够更好地维持尖牙间牙弓宽度,且下颌前牙的菌斑积累和牙龈炎症更少。

关键词： Inflammation   Coronary artery disease   Depression   Group psychotherapy   Comorbidities   BMI   Body-Mass-Index   CAD   Coronary Artery Disease   CI   Confidence Interval   HADS-D   Hospital Anxiety and Depression Scale (German version)   HAM-D   Hamilton Depression Rating Scale   hsCRP   High-sensitive C-reactive protein   IFS   Inflammatory factors score   IL-6   Interleukin-6   NYHA   New York Heart Association   OR   Odds Ratio   SF-36   Short-Form-36 Health Survey   SF-36 MCS   Short-Form-36 Health Survey-Mental Component Summary Score   SF-36 PCS   Short-Form-36 Health Survey-Physical Component Summary Score   SPIRR-CAD   Stepwise Psychotherapy Intervention to Reduce Risk in Coronary Artery Disease   TNF-α   Tumor necrosis Factor-α  

摘要： Inflammation contributes to the bidirectional relationship between depression and coronary artery disease (CAD). However, the impact of group psychotherapy on inflammatory levels in CAD patients with comorbid depression has not been elucidated.

关键词： 微塑料   纺织品   洗涤条件  

摘要： 以日常穿着的不同材质衣物为研究对象,使用家用洗衣机在不同洗涤条件下对衣物进行洗涤,收集洗涤过程中释放的微塑料,研究织物特性、洗涤条件对微塑料释放量的影响。结果表明:衣物纤维成分及织物编织方式影响微塑料释放量,耐磨性好的合成纤维比天然纤维释放的微塑料少,机织结构织物比针织结构释放更多微塑料;升高洗涤温度、增加洗涤剂用量和洗涤水量均会使纤维微塑料释放量增加;随着洗涤次数增加和洗涤条件严苛,纤维微塑料的形态结构发生显著变化,高温和多次洗涤产生的微塑料长度变短、微塑料出现劈裂、剥离、扭曲现象。另外,医用口罩也会释放微塑料。

关键词： Feasibility Studies   Dialysis   Cardiovascular Disease  

摘要： Introduction Colchicine has been shown to reduce cardiovascular events and may improve outcomes in arteriovenous fistulas used for haemodialysis due to antiproliferative effects. However, it is often avoided in patients receiving dialysis. Therefore, a large trial assessing the potential benefits of colchicine in dialysis patients cannot begin without further data on feasibility. The primary objective of this study is to assess the feasibility of carrying out future trials of colchicine in dialysis *** and analysis This is an open-label, single centre, single arm study with 100 participants. The primary outcome is feasibility and the decision to progress to a full-scale trial. This will be based on the consent rate and the colchicine discontinuation rate. Secondary objectives are testing the feasibility of data collection procedures relating to quality-of-life measures, vascular access interventions and safety. Other secondary objectives are to assess the utility of the electronic health record for collecting trial data and to explore patients' and healthcare providers' experiences and attitudes towards colchicine and a feasibility *** and dissemination The study has Research Ethics Committee approval (Wales REC 6;24/WA/0277). It is intended that the results of the study will be reported in peer-reviewed scientific *** registration number ISRCTN91308625.

摘要： Digital workflows integrating computer-aided design and computer-aided manufacturing (CAD-CAM) have improved precision in implant-supported prostheses. This article describes a step-by-step technique for guided mandibular implant placement and the CAD-CAM fabrication of a patient-specific titanium bar based on cone beam computed tomography (CBCT) segmentation, anatomic reconstruction, and a functional digital waxing. The workflow combines prosthetically driven planning with anatomic reference alignment to enhance bar adaptation and prosthetic accuracy. The digital sequence allows clinicians and dental laboratory technicians to virtually design and verify the bar on a 3-dimensionally printed mandibular model before clinical application, minimizing chairside adjustments and improving interdisciplinary communication when providing complex complete arch implant-supported prostheses.

关键词： Full-arch implant prosthesis   digital workflow   CAD   multi-source data integration   precision matching   time efficiency  

摘要： In contemporary dental laboratories, leveraging advanced digital technologies is transforming the production of full-arch implant prostheses.

关键词： 共轭凸轮   MATLAB程序   参数化   快速设计  

摘要： 为了实现凸轮的参数化设计,以共轭凸轮为例,将凸轮轮廓曲线设计方法集成在MATLAB程序中,通过将常用的凸轮机构搭建成为独立的运动模块,针对不同的模块编写相关的凸轮参数化设计程序,根据不同的设计相位要求,仅需修改模块中的相关参数,即可快速设计出新的凸轮。最后根据MATLAB软件产生的参数,利用Parametric 2.0软件建立了凸轮机构的三维模型,并对其进行运动学仿真,验证了凸轮设计的正确性。

关键词： Delirium   Intensive care units   Nursing   Sensitivity and specificity   Clinical assessment tools  

摘要： Analizar la concordancia entre las escalas NU-DESC y CAM-ICU en la detección de delirio hiperactivo e hipoactivo en pacientes adultos de un hospital de tercer nivel, validando la hipótesis de concordancia significativa (HA).

关键词： 肺血管发育畸形   异常体循环动脉供血正常肺组织   肺隔离症   介入治疗  

摘要： 异常体循环动脉供血肺组织是一种少见的先天性肺部血管发育畸形的疾病。在1946年Pryce[1]首次提出根据供血动脉与隔离肺组织的关系将其分为3种类型:Ⅰ型为异常动脉供血正常肺组织,无隔离肺组织;Ⅱ型为异常动脉供应隔离肺组织及部分周围正常肺组织;Ⅲ型为异常动脉仅供应隔离的肺组织。其中Ⅰ型最为罕见,主要表现为只有异常体循环动脉供血,无隔离肺,相应肺组织具有正常支气管肺解剖结构和肺功能,又称为肺功能正常的肺异常体循环动脉供血或异常体循环动脉供血正常肺组织[2-4]。

关键词： CAD/CAM   Short fiber composites   Hardness   Sorption   Solubility   Acidity  

摘要： This study investigates hardness and mass changes, sorption, and solubility of CAD/CAM resin composites reinforced with short fibers, woven fibers, or filler particles after storage in three buffer solutions for up to 60 days. Plate-shaped specimens were prepared from three resin composite blocks: the experimental short-fiber-reinforced composite (SFRC), TRINIA (TR), and Lava Ultimate (LU). For sorption and solubility measurements, specimens were immersed in three buffer solutions (pH 4, 7, and 10) for 60 days, weighed at intervals, then dried for a further 90 days at 37 +/- 1 degrees C. Measurements included Vickers hardness and mass changes over 1, 7, 30, and 60 days of storage and SEM images. SFRC and LU were significantly harder than TR (p = 0.001). The average percentage hardness decrease after 60 days of immersion was comparable across the three materials (overall range: 26.8-32.88%), regardless of the acidity of the solution. SFRC showed minimal decreases in hardness and mass change across the study groups. The solubility range was between - 1.0 and 1.7 mu g/mm. LU exhibited the highest sorption (p = 0.001). The experimental short fiber-reinforced composite (SFRC) exhibited relatively favorable outcomes more than the nanoceramic resin composite (LU) and greater stability than the woven fiber-reinforced composite (TR) after storage in aggressive acidic solutions over 60 days. The experimental short fiber-reinforced CAD/CAM resin composite exhibited relative mechanical stability among the studied materials and aging conditions. Generally, the studied materials were most greatly affected by alkaline storage compared to the other two buffer solutions.