"Evaluation of the influence of different build angles on the surface characteristics, accuracy, and dimensional stability of the complete denture base printed by digital light processing"

作者全名："Yan, Shan; Zhou, Jia-Ling; Zhang, Ruo-Jin; Tan, Fa-Bing"

作者地址："[Yan, Shan; Zhou, Jia-Ling; Zhang, Ruo-Jin; Tan, Fa-Bing] Chongqing Med Univ, Coll Stomatol, Chongqing 400015, Peoples R China; [Tan, Fa-Bing] Chongqing Key Lab Oral Dis & Biomed Sci, Chongqing 401147, Peoples R China; [Zhou, Jia-Ling; Zhang, Ruo-Jin; Tan, Fa-Bing] Chongqing Municipal Key Lab Oral Biomed Engn Highe, Chongqing 401147, Peoples R China; [Tan, Fa-Bing] Chongqing Med Univ, DDS Coll Stomatol, Chongqing 400015, Peoples R China"

通信作者："Tan, FB (通讯作者)，Chongqing Med Univ, DDS Coll Stomatol, Chongqing 400015, Peoples R China."

来源：HELIYON

ESI学科分类：　

WOS号：WOS:001156251900001

JCR分区：Q2

影响因子：4

年份：2024

卷号：10

期号：1

开始页：　

结束页：　

文献类型：Article

关键词：Build angle; Denture base; Surface characteristics; Accuracy; Dimensional stability

摘要："Purpose This study aims to investigate the influence of the build angle on the surface characteristics, accuracy, and dimensional stability of digital light processing (DLP) printed resin bases. Material and methods Rectangular and complete denture base samples were fabricated at 0, 45, and 90-degree angles (n = 5 for rectangular samples; n = 10 for maxillary and mandibular denture base samples) using a DLP printer. Surface morphology and roughness were assessed using a profilometer, followed by measuring hydrophilicity with a contact angle meter. Accuracy (trueness and precision) and dimensional stability were evaluated at intervals of 1, 3, 7, 14, 28, and 42 days after base printing using best-fit-alignment and deviation analysis in 3D software. Statistical analysis was performed using one-way ANOVA for surface characteristics (alpha = 0.05), multi-way ANOVA for accuracy and dimensional stability data, and Tukey's test for post-hoc comparisons. Results The 0-degree group exhibited significantly lower mean roughness (1.27 +/- 0.19 mu m) and contact angle (80.50 +/- 3.71 degrees) (P < 0.001) compared to the 90-degree and 45-degree groups. The 0-degree build angle led to superior trueness (maxilla: 77.80 +/- 9.35 mu m, mandible: 61.67 +/- 10.32 mu m) and precision (maxilla: 27.51 +/- 7.43 mu m, mandible: 53.50 +/- 15.16 mu m) compared to other groups (P < 0.001). Maxillary base precision was superior to mandibular base precision (P < 0.001). The maxillary base exhibited less dimensional deviation than the mandibular base. The 90-degree group showed the highest deviation compared to the other two groups, and all groups' deviations increased over time (P < 0.001). Conclusions The build angle significantly influences the surface characteristics, accuracy, and dimensional stability of DLP-printed denture bases. A 0-degree build angle provides the most favorable performance. The maxillary base displayed superior precision and dimensional stability than the mandibular base."

基金机构："Joint Medical Research Project between Chongqing Science and Technology Bureau and Health Commission [2023MSXM094]; Scientific and Technological Research Program of Chongqing Municipal Education Commission, China [202100439]"

基金资助正文："This work was supported by the Joint Medical Research Project between Chongqing Science and Technology Bureau and Health Commission (No.2023MSXM094) ; Scientific and Technological Research Program of Chongqing Municipal Education Commission, China (No. KJQN 202100439) ."