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Rieshy V, Balakrishnan N, Arvind TRP. Awareness and practice pertaining to the use of digital imaging for orthodontic purposes among undergraduate dental students. J Adv Pharm Technol Res 2022; 13:S568-S572. [PMID: 36798584 PMCID: PMC9926623 DOI: 10.4103/japtr.japtr_156_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 07/22/2022] [Indexed: 02/18/2023] Open
Abstract
The current study aimed at evaluation of the awareness of undergraduate dental students regarding the use of digital imaging that are used for orthodontic diagnosis and treatment. An online survey using google forms was conducted among the undergraduate dental students as a part of this study setting. The sample size of participants was 109. The survey was composed of a set of 14 questions including demographics. Ethical clearance was obtained from the Institutionalized ethical committee. SPSS software was used for data analysis and descriptive statistics. Among the entire population, 46.2% participants said that they would be using digital dental imaging during their practices and in their career and the remaining 53.8% participants said that they would not be using digital imaging due to various reasons. This study found out that undergraduate dental students have an average level of awareness regarding the use of digital dental imaging that are used for orthodontic diagnosis and treatment.
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Affiliation(s)
- V. Rieshy
- Department of Orthodontics and Dentofacial Orthopedics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Nivethigaa Balakrishnan
- Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India,Address for correspondence: Dr. Nivethigaa Balakrishnan, Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India. E-mail:
| | - T. R. Prasanna Arvind
- Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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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.
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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
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Magkavali-Trikka P, Halazonetis DJ, Athanasiou AE. Estimation of root inclination of anterior teeth from virtual study models: accuracy of a commercial software. Prog Orthod 2019; 20:43. [PMID: 31754914 PMCID: PMC6872682 DOI: 10.1186/s40510-019-0298-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 11/08/2019] [Indexed: 11/11/2022] Open
Abstract
Background The aim of the study was to assess the accuracy of commercially available software in estimating anterior tooth root inclination from digital impressions of the crowns of the teeth. Subjects and methods Following sample size calculation and application of inclusion and exclusion criteria, 55 anterior natural teeth derived from 14 dry human skulls were selected. Impressions were taken and plaster study models were fabricated. Plaster models were scanned using the high-resolution mode of an Ortho Insight 3D laser scanner. The teeth on the digital scans were segmented and virtual roots were predicted and constructed by the Ortho Insight 3D software. The 55 natural teeth were removed from the dry skulls and scanned using the Identica extraoral white-light scanner in order to calculate their actual root angulation. The teeth were scanned twice, once to acquire the crown and the cervical part of the root, and a second time to acquire the remaining part of the root, including the apex. The two scanned segments were joined in software by superimposing them along their common part. The accuracy of the digital models generated by the Ortho Insight 3D scanner in predicting root angulation was assessed by comparing these results to the corresponding measurements of the 55 natural teeth. The long axes of the tooth models obtained from the software prediction and the scanning of the actual teeth were computed and the discrepancy between them was evaluated. The error of the methods was evaluated by repeating the measurements on 14 teeth and showed an acceptable range. Results The predicted tooth angulation was found to differ significantly from the actual angulation, both statistically and clinically. The angle between the predicted and actual long axes ranged from 2.0 to 37.6°(average 9.7°; median 7.4°). No statistically significant difference was found between tooth categories. Conclusions Further investigations and improvements of the software are needed before it can be considered clinically effective.
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Affiliation(s)
- Panagiota Magkavali-Trikka
- Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates.
| | - Demetrios J Halazonetis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
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