1
|
Brandenburg LS, Georgii J, Schmelzeisen R, Spies BC, Burkhardt F, Fuessinger MA, Rothweiler RM, Gross C, Schlager S, Metzger MC. Reconstruction of dental roots for implant planning purposes: a retrospective computational and radiographic assessment of single-implant cases. Int J Comput Assist Radiol Surg 2024; 19:591-599. [PMID: 37523011 PMCID: PMC10881751 DOI: 10.1007/s11548-023-02996-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/03/2023] [Indexed: 08/01/2023]
Abstract
PURPOSE The aim of the study was to assess the deviation between clinical implant axes (CIA) determined by a surgeon during preoperative planning and reconstructed tooth axes (RTA) of missing teeth which were automatically computed by a previously introduced anatomical SSM. METHODS For this purpose all available planning datasets of single-implant cases of our clinic, which were planned with coDiagnostix Version 9.9 between 2018 and 2021, were collected for retrospective investigation. Informed consent was obtained. First, the intraoral scans of implant patients were annotated and subsequently analyzed using the SSM. The RTA, computed by the SSM, was then projected into the preoperative planning dataset. The amount and direction of spatial deviation between RTA and CIA were then measured. RESULTS Thirty-five patients were implemented. The mean distance between the occlusal entry point of anterior and posterior implants and the RTA was 0.99 mm ± 0.78 mm and 1.19 mm ± 0.55, respectively. The mean angular deviation between the CIA of anterior and posterior implants and the RTA was 12.4° ± 3.85° and 5.27° ± 2.97° respectively. The deviations in anterior implant cases were systematic and could be corrected by computing a modified RTA (mRTA) with decreased deviations (0.99 mm ± 0.84 and 4.62° ± 1.95°). The safety distances of implants set along the (m)RTA to neighboring teeth were maintained in 30 of 35 cases. CONCLUSION The RTA estimated by the SSM revealed to be a viable implant axis for most of the posterior implant cases. As there are natural differences between the anatomical tooth axis and a desirable implant axis, modifications were necessary to correct the deviations which occurred in anterior implant cases. However, the presented approach is not applicable for clinical use and always requires manual optimization by the planning surgeon.
Collapse
Affiliation(s)
- Leonard Simon Brandenburg
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany.
| | - Joachim Georgii
- Key Scientist Modeling and Simulation, Fraunhofer Institute for Digital Medicine MEVIS, Bremen, Max-von-Laue-Str. 2, 28359, Bremen, Germany
| | - Rainer Schmelzeisen
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Benedikt Christopher Spies
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center -University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Felix Burkhardt
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center -University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Marc Anton Fuessinger
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - René Marcel Rothweiler
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Christian Gross
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Stefan Schlager
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Marc Christian Metzger
- Department of Oral and Maxillofacial Surgery, Clinic, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| |
Collapse
|
2
|
Ying S, Huang F, Liu W, He F. Deep learning in the overall process of implant prosthodontics: A state-of-the-art review. Clin Implant Dent Relat Res 2024. [PMID: 38286659 DOI: 10.1111/cid.13307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/31/2024]
Abstract
Artificial intelligence represented by deep learning has attracted attention in the field of dental implant restoration. It is widely used in surgical image analysis, implant plan design, prosthesis shape design, and prognosis judgment. This article mainly describes the research progress of deep learning in the whole process of dental implant prosthodontics. It analyzes the limitations of current research, and looks forward to the future development direction.
Collapse
Affiliation(s)
- Shunv Ying
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Feng Huang
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Wei Liu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Fuming He
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| |
Collapse
|
3
|
Brandenburg LS, Berger L, Schwarz SJ, Meine H, Weingart JV, Steybe D, Spies BC, Burkhardt F, Schlager S, Metzger MC. Reconstruction of dental roots for implant planning purposes: a feasibility study. Int J Comput Assist Radiol Surg 2022; 17:1957-1968. [PMID: 35902422 PMCID: PMC9468133 DOI: 10.1007/s11548-022-02716-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 07/04/2022] [Indexed: 11/27/2022]
Abstract
Purpose Modern virtual implant planning is a time-consuming procedure, requiring a careful assessment of prosthetic and anatomical factors within a three-dimensional dataset. In order to facilitate the planning process and provide additional information, this study examines a statistical shape model (SSM) to compute the course of dental roots based on a surface scan. Material and methods Plaster models of orthognathic patients were scanned and superimposed with three-dimensional data of a cone-beam computer tomography (CBCT). Based on the open-source software “R”, including the packages Morpho, mesheR, Rvcg and RvtkStatismo, an SSM was generated to estimate the tooth axes. The accuracy of the calculated tooth axes was determined using a leave-one-out cross-validation. The deviation of tooth axis prediction in terms of angle or horizontal shift is described with mean and standard deviation. The planning dataset of an implant surgery patient was additionally analyzed using the SSM. Results 71 datasets were included in this study. The mean angle between the estimated tooth-axis and the actual tooth-axis was 7.5 ± 4.3° in the upper jaw and 6.7 ± 3.8° in the lower jaw. The horizontal deviation between the tooth axis and estimated axis was 1.3 ± 0.8 mm close to the cementoenamel junction, and 0.7 ± 0.5 mm in the apical third of the root. Results for models with one missing tooth did not differ significantly. In the clinical dataset, the SSM could give a reasonable aid for implant positioning. Conclusions With the presented SSM, the approximate course of dental roots can be predicted based on a surface scan. There was no difference in predicting the tooth axis of existent or missing teeth. In clinical context, the estimation of tooth axes of missing teeth could serve as a reference for implant positioning. However, a higher number of training data must be achieved to obtain increasing accuracy. Supplementary Information The online version contains supplementary material available at 10.1007/s11548-022-02716-x.
Collapse
Affiliation(s)
- Leonard Simon Brandenburg
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany. .,Department of Oral and Maxillofacial Surgery, Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany.
| | - Lukas Berger
- Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Steffen Jochen Schwarz
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Hans Meine
- Fraunhofer Institute for Digital Medicine MEVIS, Am Fallturm 1, 28359, Bremen, Germany
| | - Julia Vera Weingart
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - David Steybe
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Benedikt Christopher Spies
- Department of Prosthodontics, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Felix Burkhardt
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Stefan Schlager
- Department of Prosthodontics, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Marc Christian Metzger
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Clinic, Medical Center -University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| |
Collapse
|