机器人外科学杂志（中英文）2026，Vol.7Issue(1)：70-74,5.DOI:10.12180/j.issn.2096-7721.2026.01.010
网格简化对口腔种植机器人手术规划与操作中模型精度的影响
Impact of mesh simplification on model accuracy in dental implant robot-assisted surgical planning and operation
摘要
Abstract
Objective:To evaluate the effect of mesh simplification on the accuracy of digital models in dental implant robot-assisted surgical planning and operation.Methods:Ten maxillary dentate plaster models and ten maxillary edentulous plaster models were scanned using an intraoral scanner and saved as stereolithography(STL)files to serve as reference models(R0).The original models underwent mesh simplification using Geomagic software,reducing the mesh count to 75％,50％,25％,and 10％of the original file respectively.The number of triangular facets,vertices,and the file size of each simplified model were compared,and the three-dimensional(3D)root mean square(RMS)deviation between these models and the reference model was calculated.Results:The number of triangular facets and the STL file size were negatively correlated with the degree of mesh simplification.As the mesh count decreased,the 3D deviation gradually increased.When mesh simplification did not exceed 50％,the median deviation for both maxillary dentulous and edentulous models was less than 0.005 mm.At 75％simplification,the median deviation for maxillary dentulous models was 0.0097(0.0067,0.0126)mm and for maxillary edentulous models,0.0059(0.0026,0.0061)mm.At 90％simplification,the median deviation rose to 0.2264(0.2060,0.2934)mm for maxillary dentulous models and 0.1019(0.0962,0.1302)mm for maxillary edentulous models.Conclusion:Mesh simplification has a greater impact on the trueness of maxillary dentate models compared to edentulous models,particularly evident in structurally complex areas such as cusps and fissures/pits.The accuracy of dentate models is more sensitive to mesh simplification.When the degree of mesh simplification exceeds 75％,the model's morphological trueness decreases significantly,which may further affect the registration accuracy of the implant robot.关键词
网格简化/真实度/三维偏差/种植机器人Key words
Mesh Simplification/Trueness/3D Deviation/Implant Robot分类
医药卫生引用本文复制引用
李新平,赵瑞峰,白石柱,刘昱晨..网格简化对口腔种植机器人手术规划与操作中模型精度的影响[J].机器人外科学杂志（中英文）,2026,7(1):70-74,5.基金项目
国家自然科学基金(82471035) （82471035）
陕西省创新能力支撑计划(2023-CX-PT-27)National Natural Science Foundation of China(82471035) （2023-CX-PT-27）
Innovation Capability Support Program of Shaanxi Province(2023-CX-PT-27) （2023-CX-PT-27）
