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Nevertheless, due to the limitations caused by factors such as viewing angles, occlusions, and sensor resolution, the 3D scanned point clouds (PCs) could be noisy or incomplete. Hence, there is a critical need to enhance the quality of the teeth PCs to ensure a suitable dental treatment. Toward this end, we propose a systematic framework including a two-step data augmentation (DA) technique to augment the limited teeth PCs and a hybrid deep learning (DL) method to complete the incomplete PCs. For the two-step DA, we first mirror and combine the PCs based on the bilateral symmetry of the human teeth and then augment the PCs based on an iterative generative adversarial network (GAN). Two filters are designed to avoid the outlier and duplicated PCs during the DA. For the hybrid DL, we first use a deep autoencoder (AE) to represent the PCs. Then, we propose a hybrid approach that selects the best completion to the teeth PCs from AE and a reinforcement learning (RL) agent-controlled GAN. Ablation study is performed to analyze each component\u2019s contribution. We compared our method with other benchmark methods including point cloud network (PCN), cascaded refinement network (CRN), and variational relational point completion network (VRC-Net), and demonstrated that the proposed framework is suitable for completing teeth PCs with good accuracy over different scenarios.<\/jats:p>","DOI":"10.1115\/1.4056566","type":"journal-article","created":{"date-parts":[[2022,12,23]],"date-time":"2022-12-23T14:20:08Z","timestamp":1671805208000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":16,"title":["Teeth Mold Point Cloud Completion Via Data Augmentation and Hybrid RL-GAN"],"prefix":"10.1115","volume":"23","author":[{"given":"Juan Diego","family":"Toscano","sequence":"first","affiliation":[{"name":"Universidad de las Fuerzas Armadas ESPE Mechanical Engineering, , Sangolqu\u00ed 171103 , Ecuador"}]},{"given":"Christian","family":"Zuniga-Navarrete","sequence":"additional","affiliation":[{"name":"University of Louisville Industrial Engineering, , Louisville, KY 40292"}]},{"given":"Wilson David Jo","family":"Siu","sequence":"additional","affiliation":[{"name":"University at Buffalo Industrial and Systems Engineering, , Buffalo, NY 14260"}]},{"given":"Luis Javier","family":"Segura","sequence":"additional","affiliation":[{"name":"University of Louisville Industrial Engineering, , Louisville, KY 40292"}]},{"given":"Hongyue","family":"Sun","sequence":"additional","affiliation":[{"name":"University at Buffalo Industrial and Systems Engineering, , Buffalo, NY 14260"}]}],"member":"33","published-online":{"date-parts":[[2023,1,10]]},"reference":[{"issue":"S1","key":"2024011001100641600_CIT0001","doi-asserted-by":"publisher","first-page":"58","DOI":"10.1111\/adj.12480","article-title":"Clear Aligners in Orthodontic Treatment","volume":"62","author":"Weir","year":"2017","journal-title":"Aust. 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