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MULTI-OBJECTIVE SHAPE DESIGN IN AERODYNAMICS USING GAME STRATEGY 被引量:1
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作者 唐智礼 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2005年第3期195-199,共5页
Multi-objective optimization for the optimum shape design is introduced in aerodynamics using the Game theory. Based on the control theory, the employed optimizer and the negative feedback are used to implement the co... Multi-objective optimization for the optimum shape design is introduced in aerodynamics using the Game theory. Based on the control theory, the employed optimizer and the negative feedback are used to implement the constraints. All the constraints are satisfied implicitly and automatically in the design. Furthermore,the above methodology is combined with a formulation derived from the Game theory to treat multi-point airfoil optimization. Airfoil shapes are optimized according to various aerodynamics criteria. In the symmetric Nash game, each “player” is responsible for one criterion, and the Nash equilibrium provides a solution to the multipoint optimization. Design results confirm the efficiency of the method. 展开更多
关键词 Game theory multi-objective optimization aerodynamic design constrained optimal control theory
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Satellite Constellation Design with Multi-Objective Genetic Algorithm for Regional Terrestrial Satellite Network 被引量:12
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作者 Cuiqin Dai Guimin Zheng Qianbin Chen 《China Communications》 SCIE CSCD 2018年第8期1-10,共10页
Constellations design for regional terrestrial-satellite network can strengthen the coverage for incomplete terrestrial cellular network. In this paper, a regional satellite constellation design scheme with multiple f... Constellations design for regional terrestrial-satellite network can strengthen the coverage for incomplete terrestrial cellular network. In this paper, a regional satellite constellation design scheme with multiple feature points and multiple optimization indicators is proposed by comprehensively considering multi-objective optimization and genetic algorithm, and "the Belt and Road" model is presented in the way of dividing over 70 nations into three regular target areas. Following this, we formulate the optimization model and devise a multi-objective genetic algorithm suited for the regional area with the coverage rate under simulating, computing and determining. Meanwhile, the total number of satellites in the constellation is reduced by calculating the ratio of actual coverage of a single-orbit constellation and the area of targets. Moreover, the constellations' performances of the proposed scheme are investigated with the connection of C++ and Satellite Tool Kit(STK). Simulation results show that the designed satellite constellations can achieve a good coverage of the target areas. 展开更多
关键词 regional terrestrial-satellite net-work constellation design multi-objective optimization genetic algorithm coverage performance
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Method of Designing Missile Controller Based on Multi-Objective Opti mization
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作者 林波 孟秀云 刘藻珍 《Journal of Beijing Institute of Technology》 EI CAS 2006年第2期152-155,共4页
A method of designing robust controller based on genetic algorithm is presented in order to overcome the drawback of manual modification and trial in designing the control system of missile. Specification functions wh... A method of designing robust controller based on genetic algorithm is presented in order to overcome the drawback of manual modification and trial in designing the control system of missile. Specification functions which reflect the dynamic performance in time domain and robustness in frequency domain are presented, then dynamic/static performance, control cost and robust stability are incorporated into a multi-objective optimization problem. Genetic algorithm is used to solve the problem and achieve the optimal controller directly. Simulation results show that the controller provides a good stability and offers a good dynamic performance in a large flight envelope. The results also validate the effectiveness of the method. 展开更多
关键词 controller design multi-objective optimization genetic algorithm
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Application of the optimal Latin hypercube design and radial basis function network to collaborative optimization 被引量:16
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作者 ZHAO Min CUI Wei-cheng 《Journal of Marine Science and Application》 2007年第3期24-32,共9页
Improving the efficiency of ship optimization is crucial for modem ship design. Compared with traditional methods, multidisciplinary design optimization (MDO) is a more promising approach. For this reason, Collabora... Improving the efficiency of ship optimization is crucial for modem ship design. Compared with traditional methods, multidisciplinary design optimization (MDO) is a more promising approach. For this reason, Collaborative Optimization (CO) is discussed and analyzed in this paper. As one of the most frequently applied MDO methods, CO promotes autonomy of disciplines while providing a coordinating mechanism guaranteeing progress toward an optimum and maintaining interdisciplinary compatibility. However, there are some difficulties in applying the conventional CO method, such as difficulties in choosing an initial point and tremendous computational requirements. For the purpose of overcoming these problems, optimal Latin hypercube design and Radial basis function network were applied to CO. Optimal Latin hypercube design is a modified Latin Hypercube design. Radial basis function network approximates the optimization model, and is updated during the optimization process to improve accuracy. It is shown by examples that the computing efficiency and robustness of this CO method are higher than with the conventional CO method. 展开更多
关键词 multidisciplinary design optimization (MDO) collaborative optimization (CO) optimal Latin hypercube design radial basis function network APPROXIMATION
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Multi-objective forest harvesting under sustainable and economic principles 被引量:1
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作者 Talles Hudson Souza Lacerda Luciano Cavalcante de Jesus Franca +5 位作者 Isáira Leite e Lopes Sammilly Lorrayne Souza Lacerda Evandro OrfanóFigueiredo Bruno Henrique Groenner Barbosa Carolina Souza Jarochinski e Silva Lucas Rezende Gomide 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第5期1379-1394,共16页
Selective logging is well-recognized as an effective practice in sustainable forest management.However,the ecological efficiency or resilience of the residual stand is often in doubt.Recovery time depends on operation... Selective logging is well-recognized as an effective practice in sustainable forest management.However,the ecological efficiency or resilience of the residual stand is often in doubt.Recovery time depends on operational variables,diversity,and forest structure.Selective logging is excellent but is open to changes.This may be resolved by mathematical programming and this study integrates the economic-ecological aspects in multi-objective function by applying two evolutionary algorithms.The function maximizes remaining stand diversity,merchantable logs,and the inverse of distance between trees for harvesting and log landings points.The Brazilian rainforest database(566 trees)was used to simulate our 216-ha model.The log landing design has a maximum volume limit of 500 m3.The nondominated sorting genetic algorithm was applied to solve the main optimization problem.In parallel,a sub-problem(p-facility allocation)was solved for landing allocation by a genetic algorithm.Pareto frontier analysis was applied to distinguish the gradientsα-economic,β-ecological,andγ-equilibrium.As expected,the solutions have high diameter changes in the residual stand(average removal of approximately 16 m^(3) ha^(-1)).All solutions showed a grouping of trees selected for harvesting,although there was no formation of large clearings(percentage of canopy removal<7%,with an average of 2.5 ind ha^(-1)).There were no differences in floristic composition by preferentially selecting species with greater frequency in the initial stand for harvesting.This implies a lower impact on the demographic rates of the remaining stand.The methodology should support projects of reduced impact logging by using spatial-diversity information to guide better practices in tropical forests. 展开更多
关键词 Amazon rainforest management Computational intelligence multi-objective functions Evolutionary computing
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Multi-Objective Structural Optimization of Wind Turbine Tower Using Nondominated Sorting Genetic Algorithm 被引量:1
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作者 Yuqiao Zheng Lu Zhang +1 位作者 Fugang Dong Bo Dong 《Journal of Beijing Institute of Technology》 EI CAS 2020年第3期417-424,共8页
A multi-objective optimization process for wind turbine steel towers is described in present work.The objective functions are tower top deformation and mass.The tower's height,radius and thickness are considered a... A multi-objective optimization process for wind turbine steel towers is described in present work.The objective functions are tower top deformation and mass.The tower's height,radius and thickness are considered as design variables.The mathematical relationships between objective functions and variables were predicted by adopting a response surface methodology(RSM).Furthermore,the multi-objective non-dominated sorting genetic algorithm-II(NSGA-II)is adopted to optimize the tower structure to achieve accurate results with the minimum top deformation and total mass.A case study on a 2MW wind turbine tower optimization is given,which computes the desired tower structure parameters.The results are compared with the original tower:a reduction of tower top deformation reduction by about 16.5%and a reduction of a mass by about 1.5%could be achieved for such an optimization process. 展开更多
关键词 wind turbine tower statics analysis experiment design multi-objective optimization
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Analysis of solution findings in the conceptual design of function structures 被引量:1
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作者 SHIDong-yan QIUChang-hua +1 位作者 XUEJun-fang HUANGMei 《Journal of Marine Science and Application》 2005年第1期65-70,共6页
In the conceptual stage the function design process is realized by the computer aided application. After surveying on the function specification methods and the function modeling, a computer aided function design envi... In the conceptual stage the function design process is realized by the computer aided application. After surveying on the function specification methods and the function modeling, a computer aided function design environment is analyzed. Subsequently based on a module library and principle catalogue, a solution finding process as a part of conceptual design is proposed for a creative design. In addition, a search algorithm to find the solution of adaptable function structure is also discussed. The concepts proposed in this paper can support the subsequent design stages, especially simulation for checking the function structure defects. 展开更多
关键词 conceptual design function structure computer aided design
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The action mechanisms and structures designs of F-containing functional materials for high performance oxygen electrocatalysis 被引量:1
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作者 Gang Wang Shuwei Jia +7 位作者 Hongjing Gao Yewen Shui Jie Fan Yixia Zhao Lei Li Weimin Kang Nanping Deng Bowen Cheng 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第1期377-397,I0010,共22页
Non-renewable fossil fuels have led to serious problems such as global warming,environmental pollution,etc.Oxygen electrocatalysis including oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)plays a cent... Non-renewable fossil fuels have led to serious problems such as global warming,environmental pollution,etc.Oxygen electrocatalysis including oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)plays a central role in clean energy conversion,enabling a number of sustainable processes for future air battery technologies.Fluorine,as the most electronegative element(4.0)not only can induce more efficient regulation for the electronic structure,but also can bring more abundant defects and other novel effects in materials selection and preparation for favorable catalysis with respect to the other nonmetal elements.However,an individual and comprehensive overview of fluorine-containing functional materials for oxygen electrocatalysis field is still blank.Therefore,it is very meaningful to review the recent progresses of fluorine-containing oxygen electrocatalysts.In this review,we first systematically summarize the controllable preparation methods and their possible development directions based on fluorine-containing materials from four preparation methods.Due to the strong electron-withdrawing properties of fluorine,its control of the electronic structure can effectively enhance the oxygen electrocatalytic activity of the materials.In addition,the catalytic enhancement effect of fluorine on carbonbased materials also includes the prevent oxidation and the layer peeling,and realizes the precise atomic control.And the catalytic improvement mechanism of fluorine containing metal-based compounds also includes the hydration of metal site,the crystal transformation,and the oxygen vacancy induction.Then,based on their various dimensions(0D–3D),we also have summarized the advantages of different morphologies on oxygen electrocatalytic performances.Finally,the prospects and possible future researching direction of F-containing oxygen electrocatalysts are presented(e.g.,novel pathways,advanced methods for measurement and simulation,field assistance and multi-functions).The review is considered valuable and helpful in exploring the novel designs and mechanism analyses of advanced fluorine-containing electrocatalysts. 展开更多
关键词 Fluorine-containing functional materials Action mechanisms and structure designs Density functional theory Oxygen evolution reaction Oxygen reduction reaction
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Optimal Test Points Selection Based on Multi-Objective Genetic Algorithm
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作者 Yong Zhang Xi-Xiang Chen Guan-Jun Liu Jing Qiu Shu-Ming Yang 《Journal of Electronic Science and Technology of China》 2009年第4期317-321,共5页
A new approach to select anoptimal set of test points is proposed. The described method uses fault-wise table and multi-objective genetic algorithm to find the optimal set of test points. First, the fault-wise table i... A new approach to select anoptimal set of test points is proposed. The described method uses fault-wise table and multi-objective genetic algorithm to find the optimal set of test points. First, the fault-wise table is constructed whose entries are measurements associated with faults and test points. The selection of optimal test points is transformed to the selection of the columns that isolate the rows of the table. Then, four objectives are described according to practical test requirements. The multi-objective genetic algorithm is explained. Finally, the presented approach is illustrated by a practical example. The results indicate that the proposed method can efficiently and accurately find the optimal set of test points and is practical for large scale systems. 展开更多
关键词 design for testability multi-objective genetic algorithm system testing test points selection.
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Joint Design of ISAC Waveform Under PAPR Constraints
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作者 Chen Yating Wen Cai +4 位作者 Huang Yan Liang Le Li Jie Zhang Hui Hong Wei 《China Communications》 SCIE CSCD 2024年第7期186-211,共26页
In this paper,we formulate the precoding problem of integrated sensing and communication(ISAC)waveform as a non-convex quadratically constrained quadratic programming(QCQP),in which the weighted sum of communication m... In this paper,we formulate the precoding problem of integrated sensing and communication(ISAC)waveform as a non-convex quadratically constrained quadratic programming(QCQP),in which the weighted sum of communication multi-user interference(MUI)and the gap between dual-use waveform and ideal radar waveform is minimized with peak-toaverage power ratio(PAPR)constraints.We propose an efficient algorithm based on alternating direction method of multipliers(ADMM),which is able to decouple multiple variables and provide a closed-form solution for each subproblem.In addition,to improve the sensing performance in both spatial and temporal domains,we propose a new criteria to design the ideal radar waveform,in which the beam pattern is made similar to the ideal one and the integrated sidelobe level of the ambiguity function in each target direction is minimized in the region of interest.The limited memory Broyden-Fletcher-Goldfarb-Shanno(LBFGS)algorithm is applied to the design of the ideal radar waveform which works as a reference in the design of the dual-function waveform.Numerical results indicate that the designed dual-function waveform is capable of offering good communication quality of service(QoS)and sensing performance. 展开更多
关键词 ambiguity function integrated sensing and communication MIMO OFDM PAPR waveform design
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解读GB/T 51457—2024《医院洁净护理与隔离单元建筑技术标准》 被引量:1
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作者 沈晋明 许钟麟 +1 位作者 曹国庆 刘燕敏 《暖通空调》 2025年第2期10-18,共9页
GB/T 51457—2024《医院洁净护理与隔离单元建筑技术标准》规范了重症监护单元、易感染患者护理单元和负压洁净隔离单元的建设要求,提出以安全、适用、经济、节能和环保的原则满足卫生学要求。本文解读了该标准有关分级、功能分区、平... GB/T 51457—2024《医院洁净护理与隔离单元建筑技术标准》规范了重症监护单元、易感染患者护理单元和负压洁净隔离单元的建设要求,提出以安全、适用、经济、节能和环保的原则满足卫生学要求。本文解读了该标准有关分级、功能分区、平面布局、通风空调系统及技术参数的条文,解释了标准亮点,解析了一些容易引起困惑或误解的技术要点。 展开更多
关键词 医院 洁净护理与隔离单元 标准解读 功能分区 平面布局 设计参数 技术要点
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基于伽马函数的洪水频率适线方法研究
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作者 刘媛媛 刘正风 +2 位作者 刘业森 李匡 刘舒 《中国防汛抗旱》 2025年第3期35-38,85,共5页
在工程规划设计中,普遍采用P-Ⅲ曲线来计算设计洪水。然而,近年来全球气候变化导致实测洪峰流量频繁突破历史纪录,因此从工程安全角度出发,需要调整频率曲线,使其更倾向于大值区。传统上,这种调整是通过改变CV与CS的比值来实现的,但这... 在工程规划设计中,普遍采用P-Ⅲ曲线来计算设计洪水。然而,近年来全球气候变化导致实测洪峰流量频繁突破历史纪录,因此从工程安全角度出发,需要调整频率曲线,使其更倾向于大值区。传统上,这种调整是通过改变CV与CS的比值来实现的,但这种方法会导致曲线扭曲和变形,从而偏离理想形状。基于此,提出一种新的方法:基于伽马函数,对大值区进行适当加密,并利用伽马函数的反函数自动进行曲线拟合。这种方法不仅能够保持P-Ⅲ曲线的合理形状,确保曲线与频率点的吻合度较好,还能实现P-Ⅲ曲线向历史大值区的偏移,从而更准确地反映洪水风险。此外,这种方法还显著提高了工作效率和计算精度,为工程设计提供了更为科学和精确的洪水计算依据。 展开更多
关键词 设计洪水 洪水频率 伽马函数 频率曲线
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数字经济背景下超大城市住区中的办公新模式及其影响效应——以上海为例
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作者 庞磊 陆希刚 农美琪 《住宅科技》 2025年第2期9-16,共8页
伴随着数字经济推动下的产业转型,在住区中办公的可能性越来越大。超大城市住区中正在发生的功能转换、转型,对城市功能组织、职住关系将产生渐进的累积影响,对当前的规划、建设、运营提出新的要求。文章在宏观行业、职业调研的基础上,... 伴随着数字经济推动下的产业转型,在住区中办公的可能性越来越大。超大城市住区中正在发生的功能转换、转型,对城市功能组织、职住关系将产生渐进的累积影响,对当前的规划、建设、运营提出新的要求。文章在宏观行业、职业调研的基础上,并通过对上海典型住区居民问卷调研和半结构化深入访谈,从微观需求侧居民行为决策视角探究住区办公现象及其影响,旨在为精准的规划与设计响应提供基础研究。研究发现住区办公及其影响效应主要体现在:功能转换与转型、设施配置、空间配置与变化趋势等方面。 展开更多
关键词 居家办公 住区工作室办公 功能转换 功能转型 规划设计
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AR技术在包装交互设计功能性拓展中的应用
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作者 李娜 邵东臣 《丝网印刷》 2025年第4期103-105,共3页
从AR技术的概念内涵出发,归纳概括了AR技术驱动下包装交互设计的嬗变,分析探究了AR技术在包装交互设计中的功能性应用和拓展价值,为AR技术在包装设计中的有效应用提供借鉴参考。
关键词 AR技术 包装交互设计 功能性 应用
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宋元绘画中椅凳类家具的形制规律探究
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作者 牛晓霆 朴日弘 《家具与室内装饰》 北大核心 2025年第6期128-133,共6页
在宋元时期,随着起居方式的转变,椅凳类家具的设计与形制也随之发生了显著变化。本研究以245例宋元绘画中椅凳类家具为研究对象,以其所满足的基础功能作为划分依据,分为凳类、靠背椅类、扶手椅类;从坐这种行为的根本入手,将椅凳类家具... 在宋元时期,随着起居方式的转变,椅凳类家具的设计与形制也随之发生了显著变化。本研究以245例宋元绘画中椅凳类家具为研究对象,以其所满足的基础功能作为划分依据,分为凳类、靠背椅类、扶手椅类;从坐这种行为的根本入手,将椅凳类家具功能的需求与构造的形成分为外部框架体系与内部节点体系;利用数据统计、归纳演绎法,总结提炼宋元绘画中椅凳类家具的类型及其形制规律与特征。研究发现,宋元时期的家具设计不仅满足了基本的实用功能,还体现了当时社会的文化背景与审美趣味。这对于宋元绘画中椅凳类家具的理论研究与当代坐具设计提供一定的启示。 展开更多
关键词 功能设计 宋元绘画 椅凳类家具 形制规律
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自主船舶装备研发与应用思考
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作者 汤敏 陈华龙 +3 位作者 文元桥 董胜利 魏慕恒 李永杰 《船舶》 2025年第3期1-9,共9页
自主船舶是目前船舶工业发展的重要方向,自主船舶的健康发展需要完善的装备体系支撑。该文基于国际海事组织的《海上自主水面船舶规则》框架,以构建面向远程遥控模式的自主船舶装备体系为目标,分析自主船舶装备的技术需求,研究构建自主... 自主船舶是目前船舶工业发展的重要方向,自主船舶的健康发展需要完善的装备体系支撑。该文基于国际海事组织的《海上自主水面船舶规则》框架,以构建面向远程遥控模式的自主船舶装备体系为目标,分析自主船舶装备的技术需求,研究构建自主船舶装备的总体架构、配套设备体系,以及自主水平的设计与评估流程,提出船载自主功能系统与数智化设备的研发重点和发展建议,为自主船舶装备的商业化应用提供系统化理论框架和实践路径参考。 展开更多
关键词 自主船舶装备 自主功能系统 数智化设备 功能域集成控制 自主水平设计与评估
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防屈曲支撑-钢筋混凝土框架结构基于韧性的抗震设计方法研究
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作者 马恺泽 李兰欣 +1 位作者 邢国华 陈韵如 《振动与冲击》 北大核心 2025年第7期146-154,共9页
为实现防屈曲支撑-钢筋混凝土(buckling-restrained braced reinforced concrete,BRB-RC)框架结构基于韧性的抗震设计,引入韧性水平量化指标,建立建筑抗震韧性等级的分级,提出利用功能损失控制韧性指标的计算假定,并建立建筑多层级功能... 为实现防屈曲支撑-钢筋混凝土(buckling-restrained braced reinforced concrete,BRB-RC)框架结构基于韧性的抗震设计,引入韧性水平量化指标,建立建筑抗震韧性等级的分级,提出利用功能损失控制韧性指标的计算假定,并建立建筑多层级功能损失量化关系,提出根据建筑功能损失控制构件损伤及工程需求参数的方法。依据BRB-RC框架结构的受力机制,提出其基于韧性的抗震设计方法并建立设计流程。将设计方法应用于一幢5层的BRB-RC框架结构的抗震设计并进行罕遇地震作用下的弹塑性时程分析。分析结果表明,结构的层间位移角和层间剪力分布均满足设计要求,所提出的方法能实现预期的抗震韧性目标。 展开更多
关键词 建筑抗震韧性 防屈曲支撑(BRB) 钢筋混凝土(RC)框架结构 抗震设计 功能损失
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基于Unity3D的游戏设计与实现
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作者 巩云飞 《现代信息科技》 2025年第8期89-92,共4页
角色扮演游戏(RPG)因其丰富的故事情节、深入的角色塑造和高度自由的游戏玩法而备受玩家青睐。《拯救家园》游戏使用Unity引擎进行游戏设计开发。文章通过游戏的总体设计、游戏模型制作和场景搭建,以及游戏的主角模块、敌人模块、战斗... 角色扮演游戏(RPG)因其丰富的故事情节、深入的角色塑造和高度自由的游戏玩法而备受玩家青睐。《拯救家园》游戏使用Unity引擎进行游戏设计开发。文章通过游戏的总体设计、游戏模型制作和场景搭建,以及游戏的主角模块、敌人模块、战斗模块、UI模块、钥匙模块等模块的开发,实现了人物移动、AI人物的巡逻导航和攻击、传送门响应、音效灯光响应、摄像头扫描等功能。游戏具有良好的趣味性、互动性与多样性。 展开更多
关键词 游戏设计 建模 交互功能
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基于Green函数的轮胎冲击载荷特性反演方法
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作者 师桂杰 李强 王德禹 《中国舰船研究》 北大核心 2025年第3期165-173,共9页
[目的]旨在通过结构响应间接识别轮胎冲击载荷及其分布特性,为甲板设计与安全评估提供依据,提出一种基于Green函数的载荷反演方法。[方法]以某船甲板加筋板为研究对象,利用Green函数将冲击载荷表示为单位脉冲载荷的叠加,通过有限元仿真... [目的]旨在通过结构响应间接识别轮胎冲击载荷及其分布特性,为甲板设计与安全评估提供依据,提出一种基于Green函数的载荷反演方法。[方法]以某船甲板加筋板为研究对象,利用Green函数将冲击载荷表示为单位脉冲载荷的叠加,通过有限元仿真得到Green核函数矩阵,并结合广义交叉验证准则(GCV)的Tikhonov正则化方法,建立载荷反演模型。针对单个轮胎及多个轮胎冲击工况,分析多源载荷对反演精度的影响。对于凸型、马鞍型和凹型3种典型的轮印载荷分布形式,通过等效划分受力区域并施加单位脉冲载荷,完成载荷分布特性的反演。[结果]结果表明,所提方法能够有效识别轮胎冲击载荷的时间历程及其分布特性,反演相对误差均小于5%。其中,基于应变和位移响应的反演精度较高,误差低于2%;即使在5%噪声干扰下,反演载荷仍然与实际载荷基本一致。[结论]所提方法解决了冲击载荷作用时间短、结构响应范围有限以及多源载荷联合作用带来的反演难题,为实船轮印载荷识别提供了新思路,具有重要的工程应用价值。 展开更多
关键词 甲板设计 结构响应 动力响应 加筋板 承载能力 冲击载荷 轮印载荷分布 GREEN函数 载荷反演
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计算机辅助设计与制造高嵌体修复牙体缺损的效果评价
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作者 黄珊珊 韩群超 +2 位作者 佘睿 杨帆 龙艳华 《成都医学院学报》 2025年第1期62-65,共4页
目的观察计算机辅助设计与制造(CAD/CAM)高嵌体修复牙体缺损的效果。方法选取2021年9月至2023年9月于昆明医科大学附属口腔医院牙体牙髓病科收治的100例后牙牙体缺损(PTD)患者为研究对象,采用随机数字表法将其分对照组(采用传统印模全... 目的观察计算机辅助设计与制造(CAD/CAM)高嵌体修复牙体缺损的效果。方法选取2021年9月至2023年9月于昆明医科大学附属口腔医院牙体牙髓病科收治的100例后牙牙体缺损(PTD)患者为研究对象,采用随机数字表法将其分对照组(采用传统印模全瓷冠修复)和试验组(采用CAD/CAM高嵌体修复),每组50例(50颗)。比较两组单颗牙备牙时间、调(牙合)时间、修复效果、牙龈状况、咀嚼功能和并发症。结果试验组单颗牙备牙时间、调(牙合)时间、并发症总发生率少(或低)于对照组(P<0.05),边缘适合性、固位、牙龈健康、颜色匹配、外形、继发龋、修复体折裂成功率高于对照组(P<0.05)。修复后两组菌斑指数、牙龈指数较修复前低(P<0.05),且试验组低于对照组(P<0.05)。修复后两组咀嚼效率、咬合力较修复前提高(P<0.05),且试验组高于对照组(P<0.05)。结论CAD/CAM高嵌体修复PTD,可缩短单颗牙备牙时间、调(牙合)时间,改善牙龈状况,提升修复效果、咀嚼功能,且并发症少。 展开更多
关键词 计算机辅助设计/计算机辅助制造 高嵌体修复 牙体缺损 修复效果 咀嚼功能
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