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Alalawi H. A one-piece CAD-CAM printed custom implant healing abutment: A dental technique. J Prosthet Dent 2024:S0022-3913(24)00348-2. [PMID: 38797574 DOI: 10.1016/j.prosdent.2024.04.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 05/29/2024]
Abstract
This clinical technique describes a method of fabricating a 1-piece computer-aided design and computer-aided manufacturing (CAD-CAM) printed custom healing abutment. A digital surgical guide and a virtual model based on the proposed implant position were generated. Then, a digitally designed healing abutment was fabricated using the Dental Designer software program. The definitive abutment design was printed from an interim crown resin material. The described method combines the guided implant placement and a 1-piece CAD-CAM printed custom healing abutment to develop appropriate tissue contours.
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Affiliation(s)
- Haidar Alalawi
- Assistant Professor, Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
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Ou Q, Wu P, Zhou Z, Pan D, Tang JY. Complication of osteo reconstruction by utilizing free vascularized fibular bone graft. BMC Surg 2020; 20:216. [PMID: 33008361 PMCID: PMC7531124 DOI: 10.1186/s12893-020-00875-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 09/21/2020] [Indexed: 12/19/2022] Open
Abstract
The success of free vascularized fibular bone graft (FVFBG) has accelerated the osteo reconstruction which results from trauma, resection of a tumor or an infectious bone segment, or correction of congenital deformity. But the complication behind should not be overlooked. The failure could necessitate a second surgery, which prolong the rehabilitation period and produce further health cost. Worst, the patients may suffer a permanent impaired ankle function, or a sustained morpho-functional loss on reconstructive area which are hard to save. To provide an overview of the complication related to reconstruction by FVFBG, a narrative review is conducted to identify the complications including their types and rates, the contributing factors, the approaches to measure and the techniques to avoid. Methodologically, by quick research on Pubmed and abstract reading of reviews, we characterize five reconstructive areas where FVFBG were most frequently applied: extremities, mandible, spine, osteonecrosis of femoral head, and penile. Following, the complications on different reconstructive areas are retrieved, studied and presented in five (or more specifically, six) separate sections. By the way, meaningful difference between FVFBG and other bone flap was presented in a few words if necessary. Donor-site morbidities were studied and summarized as a whole. In these literatures, the evidences documented on limb and mandibular reconstruction have the fullest detail, followed by the spine and lastly the penile. In conclusion, FVFBG, though a mature technique, needs further deep and comprehensive study and maybe device-based assistance to achieve better reconstructive effect and minimize donor-site damage.
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Affiliation(s)
- Qifeng Ou
- Department of Orthopedics, Hand and Microsurgery, Xiangya Hospital, Central South University, No.87 XiangYa Road, Changsha, 410008, Hunan, China
| | - Panfeng Wu
- Department of Orthopedics, Hand and Microsurgery, Xiangya Hospital, Central South University, No.87 XiangYa Road, Changsha, 410008, Hunan, China
| | - Zhengbing Zhou
- Department of Orthopedics, Hand and Microsurgery, Xiangya Hospital, Central South University, No.87 XiangYa Road, Changsha, 410008, Hunan, China
| | - Ding Pan
- Department of Orthopedics, Hand and Microsurgery, Xiangya Hospital, Central South University, No.87 XiangYa Road, Changsha, 410008, Hunan, China
| | - Ju-Yu Tang
- Department of Orthopedics, Hand and Microsurgery, Xiangya Hospital, Central South University, No.87 XiangYa Road, Changsha, 410008, Hunan, China.
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Ead MS, Duke KK, Jaremko JL, Westover L. Investigation of pelvic symmetry using CAD software. Med Biol Eng Comput 2019; 58:75-82. [PMID: 31745838 DOI: 10.1007/s11517-019-02068-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 11/02/2019] [Indexed: 12/30/2022]
Abstract
Severe pelvic fractures often prove difficult for surgeons as they require patient-specific surgical treatment plans and customized equipment. Developing virtual patient-specific 3D pelvis models would ease the surgical planning process and enable development of custom fixation plates. This paper aims to examine pelvic symmetry to conclude whether the contralateral side may be used as a reference model for the fractured side of the pelvis. Fourteen subjects with intact pelvises were involved in this study. CT scans of the pelvises were converted to 3D models and the right sides of the pelvises were reflected and aligned with the left sides. A deviation analysis was then performed for each set of models and results showed that the average root mean square (RMS) of values was 1.14 ± 0.26 mm and the average percentage of points below a deviation threshold of ± 2 mm was 91.9 ± 5.55%. The deviation color maps (DCMs) showed that the largest deviations were on the non-articular surfaces. The volume and surface area of each model were also examined and showed no significant differences between left and right sides. These results indicate that the pelvis displays bilateral symmetry and this concept can be used to develop fully intact patient-specific 3D pelvis models for fracture reconstruction using the unfractured contralateral side. Graphical Abstract.
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Affiliation(s)
- Maha S Ead
- Department of Mechanical Engineering, University of Alberta, Edmonton, Canada.
| | - Kajsa K Duke
- Department of Mechanical Engineering, University of Alberta, Edmonton, Canada
| | - Jacob L Jaremko
- Department of Radiology and Diagnostic Imaging, Faculty of Medicine, University of Alberta, Edmonton, Canada
| | - Lindsey Westover
- Department of Mechanical Engineering, University of Alberta, Edmonton, Canada
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Li L, Hao J, Qu S, Fang Y. The diagnostic value of three-dimensional CT angiography for patients with acute coronary artery disease. Exp Ther Med 2018; 16:945-949. [PMID: 30116344 DOI: 10.3892/etm.2018.6257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/19/2018] [Indexed: 01/19/2023] Open
Abstract
Computed tomography angiography (CTA) is an efficient method for the diagnosis of heart disease. However, few contemporary studies have evaluated the prognostic value of three-dimensional (3D)-CTA for patients with acute coronary artery disease. The aim of the present study was to investigate the diagnostic value of 3D-CTA for patients with acute coronary artery disease. A total of 136 patients with suspected acute coronary artery disease were recruited and received conventional coronary angiography (CCA) and 3D-CTA. 3D-CTA was used to assess calcified plaques in the coronary arteries (CCTA), the ratio of calcified plaque volume to vessel circumference (RVTC) and diagnostic accuracy. The results revealed that 3D-CTA was a more effective diagnostic method for identifying calcified plaques in patients with acute coronary artery disease compared with CCA. 3D-CTA demonstrated a significantly better area under curve, sensitivity, specificity, positive predictive value and negative predictive value compared with CCA (P<0.01). In the present study, 3D-CTA was used to successfully diagnose 86 patients with acute coronary artery disease, 34 with myocardial infarction and 16 with stable angina. 3D-CTA images clearly showed global noise levels and target-to-background ratios determined by manually delineated coronary plaque lesions compared with CCA. Furthermore, 3D-CTA was significantly better for discriminating ischemia compared with CCA (P<0.01). In conclusion, the results of the present study suggest that 3D-CTA provides superior diagnostic performance compared with CCA alone in patients with acute coronary artery disease.
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Affiliation(s)
- Libo Li
- Department of Radiology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130017, P.R. China
| | - Jing Hao
- Department of Pediatric Ultrasound, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Shi Qu
- Department of Radiology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130017, P.R. China
| | - Yancheng Fang
- Department of Radiology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130017, P.R. China
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Da'ar OB, Alshaya A. Is it cost-beneficial to society? Measuring the economic worth of dental residency training. EVALUATION AND PROGRAM PLANNING 2018; 68:117-123. [PMID: 29549781 DOI: 10.1016/j.evalprogplan.2018.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 02/07/2018] [Accepted: 02/16/2018] [Indexed: 06/08/2023]
Abstract
This study estimated whether continued programming of a highly specialized four-year dentistry residency training in Saudi Arabia was cost-beneficial. We utilized a purposive sampling to administer a survey to trainees in major cities. Additionally, we used publically available market information about general practitioners. We employed Benefit-Cost Analysis accounting approach as a conceptual framework. Using general practitioners as the base category, we grouped overall social analytical perspectives into resident trainees and rest of society. The residency program was cost-beneficial to trainees, realizing an estimated return of SR 4.07 per SR 1 invested. The overall societal return was SR 0.98 per SR 1 invested, slightly shy of a bang for the buck, in part because the public sector largely runs the training. Benefits included increased earnings and enhanced restorative dentistry skills accruing to trainees; increased charitable contributions and programming-related payments accruing to programs and the public; and practice-related payments accruing to governmental, professional, and insurance agencies. Rest of society, notably government underwrote much of the cost of programming. A sensitivity analysis revealed the results were robust to uncertainties in the data and estimation. Our findings offer evidence to evaluate whether continued residency training is cost-beneficial to trainees and potentially to overall society.
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Affiliation(s)
- Omar B Da'ar
- Department of Health System & Quality Management, College of Public Health and Health Informatics, King Saud Bin Abdulaziz University for Health Sciences, National Guard Health Affairs, Riyadh, Saudi Arabia.
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Maroulakos G, Nagy WW, Ahmed A, Artopoulou II. Prosthetic rehabilitation following lateral resection of the mandible with a long cantilever implant-supported fixed prosthesis: A 3-year clinical report. J Prosthet Dent 2017; 118:678-685. [PMID: 28461046 DOI: 10.1016/j.prosdent.2017.01.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 11/30/2022]
Abstract
This clinical report describes the prosthetic management of the surgical reconstruction of a patient after mandibular resection. Complete oral rehabilitation was achieved with a maxillary complete denture and a mandibular implant-supported fixed prosthesis with a custom titanium framework and a long unilateral cantilever.
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Affiliation(s)
- Georgios Maroulakos
- Assistant Professor, Department of General Dental Sciences, Marquette University School of Dentistry, Milwaukee, Wis.
| | - William W Nagy
- Professor and Director, Graduate Prosthodontics, Department of Restorative Sciences, Texas A&M University College of Dentistry, Dallas, Texas
| | - Ayman Ahmed
- Clinical Assistant Professor, Department of General Dental Sciences, Marquette University School of Dentistry, Milwaukee, Wis
| | - Ioli I Artopoulou
- Lecturer, Department of Prosthodontics, National and Kapodistrian University of Athens, School of Dentistry, Athens, Greece
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Customized CAD-CAM healing abutment for delayed loaded implants. J Prosthet Dent 2016; 116:176-9. [DOI: 10.1016/j.prosdent.2016.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/15/2016] [Accepted: 01/15/2016] [Indexed: 11/19/2022]
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