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Journal of Prosthetic Dentistry

A chairside digital radiographic guide for registering digital casts to cone beam computed tomography scans with strong metallic artifacts

  • Qin Wu
    Affiliations
    Doctoral candidate, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
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  • Jiacheng Wu
    Affiliations
    Graduate student, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
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  • Ying Tan
    Affiliations
    Graduate student, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
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  • Jikui Sun
    Affiliations
    Graduate student, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
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  • Haiyang Yu
    Correspondence
    Corresponding author: Dr Haiyang Yu, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, 14 Renmin South Rd, 3rd Section, Chengdu, Sichuan 610041, PR CHINA
    Affiliations
    Professor, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
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      Abstract

      Accurate registration of digital casts and cone beam computed tomography (CBCT) scans with strong metallic artifacts is essential for the accuracy of guided implant surgery. This article describes a procedure for mapping digital casts onto CBCT scans containing significant scatter artifacts in the virtual implant planning stage. The technique uses a chairside segmented occlusal wing-like radiographic guide, which is constructed of digital splints fabricated using a desktop 3-dimensional printer and composite resin spheres as markers to accurately superimpose the bimaxillary digital scans onto the CBCT scans in a single procedure. This cost-effective technique is timesaving for clinicians and patients, and the digital information for implant planning can be collected in a single visit.
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