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Lin HT, Lin JCY, Salamanca E, Dorj O, Pan YH, Wu YF, Hsu YS, Fang CY, Chang WJ. Marginal Bone Level Evaluation of Fixed Partial Dental Prostheses Using Preformed Stock versus CAD/CAM Customized Abutments. J Pers Med 2022; 12:jpm12071051. [PMID: 35887548 PMCID: PMC9317139 DOI: 10.3390/jpm12071051] [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: 05/15/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 12/01/2022] Open
Abstract
Background: The maintenance of marginal bone levels around dental implants is an important criterion for evaluating the success of implants. Although computer-aided design/computer-aided manufacturing (CAD/CAM) customized abutments (CAs) provide more flexible solutions, compared with the original preformed stock abutments (PAs), there are dimensional tolerances and underlying drawbacks in the production of CAD/CAM CAs, which may change the tightness and seamless connection between fixtures and abutments set by the manufacturer and then affect the long-term stability of the abutments. This study aimed to examine the change in both mesial and distal bone levels using digital periapical radiographs to evaluate the difference between CAD/CAM CAs and original PAs.Material and methods: Radiographs were taken before delivery; after functional loading for 1 month; and after 3, 6, and 12 months; and the vertical marginal bone levels (vMBLs) of both the mesial and distal surrounding implant bones were measured. All data are presented as means ± standard errors and were analyzed using Student’s t-test. A p-value < 0.05 was judged to represent a significant difference. Results: A total of 57 implants in 50 patients were divided into 22 CAD/CAM CAs and 35 original stock abutments. The PAs appeared to have a more stable bone level. By contrast, the amount of bone level change in the CAs was higher than that in the PAs. The change in the vMBL of the CAs was significantly more than that of the PAs after functional loading for 1 month (p = 0.006), 3 months (p = 0.013), 6 months (p = 0.014), and 12 months (p = 0.002). In contrast, the distal marginal bone level was lower than the mesial marginal bone level in any period. Nevertheless, the bone levels of the CAs and PAs in any period were comparable with no significant difference. Conclusions: Significant differences were found between the mesial and distal bone levels in the PAs. The CAD/CAM CAs showed a significantly greater bone level change than the original stock abutments after functional loading.
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Affiliation(s)
- Hui-Ting Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
| | - Jerry Chin-Yi Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 01238, USA
| | - Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
| | - Odontuya Dorj
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Department of Dental technology and Dental Hygiene, School of Dentistry, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
| | - Yu-Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Graduate Institute of Dental & Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
| | - Yung-Szu Hsu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Dental Department, Taipei Medical University, Shuang Ho Hospital, New Taipei City 235, Taiwan
| | - Chih-Yuan Fang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Department of Dentistry, Taipei Municipal Wan Fang Hospital, Taipei 110, Taiwan
- Correspondence: (C.-Y.F.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (W.-J.C.)
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-T.L.); (J.C.-Y.L.); (E.S.); (O.D.); (Y.-H.P.); (Y.-F.W.); (Y.-S.H.)
- Dental Department, Taipei Medical University, Shuang Ho Hospital, New Taipei City 235, Taiwan
- Correspondence: (C.-Y.F.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (W.-J.C.)
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Accuracy of single implant scans with a combined healing abutment-scan body system and different intraoral scanners: AAn in vitro study. J Dent 2021; 113:103773. [PMID: 34384842 DOI: 10.1016/j.jdent.2021.103773] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE The aim of the present study was to evaluate the accuracy of single implant scans with a combined healing abutment-scan body (CHA-SB) system using different intraoral scanners. METHODS A partially edentulous model with an implant was fabricated, and a CHA-SB system was secured on the implant. The model was scanned using an industrial-grade blue light scanner (ATOS Core 80) and a master reference model was generated (MRM). The model was also scanned with 4 different intraoral scanners (IOSs) [(Virtuo Vivo (VV), TRIOS 3 (T3), Omnicam (CO), and Primescan (PS)]. Test scans (n = 8) were superimposed over the MRM using the best fit algorithm (GOM Inspect 2018; GOM GmbH). After superimpositions, distance and angular deviations at selected areas on CHA-SB system were calculated. The data were analyzed with a 1-way ANOVA and Tukey HSD tests for trueness and precision (α=0.05). RESULTS The differences in trueness (distance deviations) among tested IOSs were nonsignificant (P=.652). VV presented the highest angular deviations (P ≤.031), and the angular deviations in other IOS scans were not found different (P ≥.378). The precision of distance deviation data was not significantly different among scanners (P=.052). For the precision of angular deviation data, significant differences were found among IOSs (P=.002). Compared with PS (P=.007) and T3 (P=.014), VV had significantly lower precision, which was not significantly different than that of CO (P=.815). CONCLUSIONS The accuracy (angular deviation) of scans of a combined healing abutment-scan body system on a single implant varied depending on the IOS. VirtuoVivo scans had the lowest accuracy in terms of angular deviations. When the distance deviation data were considered, scan accuracy of scanners was similar. CLINICAL SIGNIFICANCE A recently introduced combined healing abutment-scan body system combines the acquisition of both the implant and the soft tissue. When different intraoral scanners scan the combined healing abutment-scan body system, the scan accuracy may vary.
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The accuracy of single implant scans with a healing abutment-scanpeg system compared with the scans of a scanbody and conventional impressions: An in vitro study. J Dent 2021; 110:103684. [PMID: 33961938 DOI: 10.1016/j.jdent.2021.103684] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 02/01/2023] Open
Abstract
PURPOSE To compare the accuracy of polyvinylsiloxane (PVS) impressions and intraoral scans when a healing abutment-scanpeg system (HASP) or a conventional scanbody (CSB) was used on a single implant. MATERIALS AND METHODS A maxillary model with an implant (4.0 × 11 mm) (Neoss) and a CSB or an HASP (Neoss) was scanned by using a laboratory scanner (Ceramill Map 600; Amann Girrbach) (reference scans) and an intraoral scanner (Trios 3) (n = 10). PVS open-tray impressions were also made and stone casts of the model with a CSB were digitized with the laboratory scanner. Intraoral scanner and cast scans were superimposed to their reference scans. On superimposed scans, points were selected on HASP and CSB to calculate distance deviations (at points 1-4) and angular deviations (at points 5 and 6 on CSB and PVS, and 5-8 on HASP) between scans (trueness), and their variation (precision). The deviation data was analyzed with ANOVA and pairwise comparisons (trueness) with Tukey's adjustment, and F-tests (precision). RESULTS At point 1, PVS had lower trueness than CSB (difference in means (DIMs) = 0.184 mm, p = 0.006) and HASP (DIMs = 0.122 mm, p = 0.042). At point 3, CSB had higher trueness than HASP (DIMs = 0.134 mm, p = 0.001). Angular deviations with PVS were higher than with CSB (DIMs = 0.6°, p = 0.013) and HASP (DIMs = 0.7°, p = 0.005). CSB had higher precision than PVS (p < 0.05). HASP had higher precision than PVS for distance (Point 1)(p < 0.001) and angular deviations (p < 0.05). Deviation differences within the HASP parts were not significant. CONCLUSION The accuracy of intraoral scans and PVS impressions of an implant was similar. CLINICAL RELEVANCE The combined healing abutment-scanpeg system and the conventional scanbody can be recommended for scans of anterior single implants with the intraoral scanner used.
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Batak B, Yilmaz B, Shah K, Rathi R, Schimmel M, Lang L. Effect of coded healing abutment height and position on the trueness of digital intraoral implant scans. J Prosthet Dent 2020; 123:466-472. [DOI: 10.1016/j.prosdent.2019.06.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 11/29/2022]
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Yilmaz B, Abou-Ayash S. A digital intraoral implant scan technique using a combined healing abutment and scan body system. J Prosthet Dent 2020; 123:206-209. [DOI: 10.1016/j.prosdent.2019.01.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/18/2019] [Accepted: 01/19/2019] [Indexed: 10/26/2022]
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Rech-Ortega C, Fernández-Estevan L, Solá-Ruíz MF, Agustín-Panadero R, Labaig-Rueda C. Comparative in vitro study of the accuracy of impression techniques for dental implants: Direct technique with an elastomeric impression material versus intraoral scanner. Med Oral Patol Oral Cir Bucal 2019; 24:e89-e95. [PMID: 30573714 PMCID: PMC6344004 DOI: 10.4317/medoral.22822] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 10/16/2018] [Indexed: 11/17/2022] Open
Abstract
Background The aim of this study was to compare a conventional technique (elastomeric impression material - EIM) and a digital technique (scanner digital model – SDM) on a six-analog master model (MM) to determine which was the most exact. Material and Methods Twenty impressions were taken of a master model (EIM) and twenty scanned impressions (SDM) (True Definition). A coordinate measuring machine (CMM) was used to measure the distances between adjacent analogues (1-2, 2-3, 3-4, 4-5, 5-6), intermittently positioned analogues (1-4, 3-6) and the most distal (1-6). Reference values were established from the master model, which were compared with the two impression techniques. The significance level was established as 5% (p<0.05). Results The precision of each technique was compared with MM. For adjacent analogues (1-2), no significant differences were found between EIM-MM (p=0,146). For intermittently positioned analogues (1-4), SDM did not show significant differences with MM (p=0.255). For the distance between distal analogues (1-6), significant differences were found between both techniques and MM (p=0.001). Conclusions In a clinical situation with < three implants, EIM is more exact than SDM, but in cases of four implants SDM is more exact. For rehabilitations (> four implants), neither technique can be considered accurate although error falls within the tolerance limits established in the literature (30-150µm). Key words:Digital workflow, full arch scan, intraoral scanner, CAD/CAM, polyether impression, accuracy.
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Affiliation(s)
- C Rech-Ortega
- Faculty of Medicine and Dentistry, (Unit of Prosthodontics and Occlusion), University of Valencia, Spain, C/ Gascó Oliag, 1, 46021 Valencia, Spain,
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Abduo J, Gade L, Gill H, Judge R, Darby I. A comparative study of encode protocol versus conventional protocol for restoring single implants: One-year prospective randomized controlled clinical trial. Clin Implant Dent Relat Res 2017; 19:1061-1067. [DOI: 10.1111/cid.12541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 08/19/2017] [Accepted: 08/30/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Jaafar Abduo
- Melbourne Dental School; Melbourne University, 720 Swanston Street; Melbourne Victoria 3010 Australia
| | - Lakshmi Gade
- Melbourne Dental School; Melbourne University, 720 Swanston Street; Melbourne Victoria 3010 Australia
| | - Harjot Gill
- Melbourne Dental School; Melbourne University, 720 Swanston Street; Melbourne Victoria 3010 Australia
| | - Roy Judge
- Melbourne Dental School; Melbourne University, 720 Swanston Street; Melbourne Victoria 3010 Australia
| | - Ivan Darby
- Melbourne Dental School; Melbourne University, 720 Swanston Street; Melbourne Victoria 3010 Australia
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Zhang J, Zhang R, Ren G, Zhang X. A method for using solid modeling CAD software to create an implant library for the fabrication of a custom abutment. J Prosthet Dent 2017; 117:209-213. [DOI: 10.1016/j.prosdent.2016.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 05/10/2016] [Accepted: 05/13/2016] [Indexed: 11/28/2022]
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Ajioka H, Kihara H, Odaira C, Kobayashi T, Kondo H. Examination of the Position Accuracy of Implant Abutments Reproduced by Intra-Oral Optical Impression. PLoS One 2016; 11:e0164048. [PMID: 27706225 PMCID: PMC5052018 DOI: 10.1371/journal.pone.0164048] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 09/19/2016] [Indexed: 11/23/2022] Open
Abstract
An impression technique called optical impression using intraoral scanner has attracted attention in digital dentistry. This study aimed to evaluate the accuracy of the optical impression, comparing a virtual model reproduced by an intraoral scanner to a working cast made by conventional silicone impression technique. Two implants were placed on a master model. Working casts made of plaster were fabricated from the master model by silicone impression. The distance between the ball abutments and the angulation between the healing abutments of 5 mm and 7 mm height at master model were measured using Computer Numerical Control Coordinate Measuring Machine (CNCCMM) as control. Working casts were then measured using CNCCMM, and virtual models via stereo lithography data of master model were measured by a three-dimensional analyzing software. The distance between ball abutments of the master model was 9634.9 ± 1.2 μm. The mean values of trueness of the Lava COS and working casts were 64.5 μm and 22.5 μm, respectively, greater than that of control. The mean of precision values of the Lava COS and working casts were 15.6 μm and 13.5 μm, respectively. In the case of a 5-mm-height healing abutment, mean angulation error of the Lava COS was greater than that of the working cast, resulting in significant differences in trueness and precision. However, in the case of a 7-mm-height abutment, mean angulation errors of the Lava COS and the working cast were not significantly different in trueness and precision. Therefore, distance errors of the optical impression were slightly greater than those of conventional impression. Moreover, the trueness and precision of angulation error could be improved in the optical impression using longer healing abutments. In the near future, the development of information technology could enable improvement in the accuracy of the optical impression with intraoral scanners.
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Affiliation(s)
- Hitoshi Ajioka
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Hidemichi Kihara
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Chikayuki Odaira
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Takuya Kobayashi
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Hisatomo Kondo
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
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Vafiadis D, Goldstein G, Garber D, Lambrakos A, Kowalski B. Immediate Implant Placement of a Single Central Incisor Using a CAD/CAM Crown-Root Form Technique: Provisional to Final Restoration. J ESTHET RESTOR DENT 2016; 29:13-21. [DOI: 10.1111/jerd.12265] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Dean Vafiadis
- Clinical Associate Professor, Department of Periodontics and Implant Dentistry; New York University College of Dentistry; New York NY
| | - Gary Goldstein
- Professor, Department of Prosthodontics; New York University College of Dentistry; New York NY
| | - David Garber
- Clinical Professor, Department of Periodontics; Georgia Health Sciences University School of Dentistry, Private Practice; Atlanta GA
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Prithviraj DR, Bhalla HK, Vashisht R, Sounderraj K, Prithvi S. Revolutionizing restorative dentistry: an overview. J Indian Prosthodont Soc 2014; 14:333-43. [PMID: 25489155 PMCID: PMC4257941 DOI: 10.1007/s13191-014-0351-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 01/12/2014] [Indexed: 10/25/2022] Open
Abstract
The field of science and research is ever changing and the scientific discipline of prosthodontics is no exception. The practice of prosthodontics and the supporting technology involved has evolved tremendously from the traditional to the contemporary. As a result of continual developments in technology, new methods of production and new treatment concepts may be expected. Clinicians must have certain basic knowledge if they are to benefit from these new procedures. This article reviews the contemporary trends in the field of prosthodontics and provides an insight into what one might expect in the near future.
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Affiliation(s)
- D. R. Prithviraj
- />Department of Prosthodontics, Government Dental College and Research Institute, Victoria Hospital Campus, Fort, Bangalore, 560002 India
| | - Harleen Kaur Bhalla
- />Department of Prosthodontics, Government Dental College and Research Institute, Victoria Hospital Campus, Fort, Bangalore, 560002 India
| | - Richa Vashisht
- />Department of Prosthodontics, Government Dental College and Research Institute, Victoria Hospital Campus, Fort, Bangalore, 560002 India
| | - K. Sounderraj
- />Department of Prosthodontics, Government Dental College and Research Institute, Victoria Hospital Campus, Fort, Bangalore, 560002 India
| | - Shruthi Prithvi
- />Department of Orthodontics, Dayanand Sagar College of Dental Sciences, Bangalore, India
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Park JM, Lee JB, Heo SJ, Park EJ. A comparative study of gold UCLA-type and CAD/CAM titanium implant abutments. J Adv Prosthodont 2014; 6:46-52. [PMID: 24605206 PMCID: PMC3942527 DOI: 10.4047/jap.2014.6.1.46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 01/24/2014] [Accepted: 02/05/2014] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the interface accuracy of computer-assisted designed and manufactured (CAD/CAM) titanium abutments and implant fixture compared to gold-cast UCLA abutments. MATERIALS AND METHODS An external connection implant system (Mark III, n=10) and an internal connection implant system (Replace Select, n=10) were used, 5 of each group were connected to milled titanium abutment and the rest were connected to the gold-cast UCLA abutments. The implant fixture and abutment were tightened to torque of 35 Ncm using a digital torque gauge, and initial detorque values were measured 10 minutes after tightening. To mimic the mastication, a cyclic loading was applied at 14 Hz for one million cycles, with the stress amplitude range being within 0 N to 100 N. After the cyclic loading, detorque values were measured again. The fixture-abutment gaps were measured under a microscope and recorded with an accuracy of ±0.1 µm at 50 points. RESULTS Initial detorque values of milled abutment were significantly higher than those of cast abutment (P<.05). Detorque values after one million dynamic cyclic loadings were not significantly different (P>.05). After cyclic loading, detorque values of cast abutment increased, but those of milled abutment decreased (P<.05). There was no significant difference of gap dimension between the milled abutment group and the cast abutment group after cyclic loading. CONCLUSION In conclusion, CAD/CAM milled titanium abutment can be fabricated with sufficient accuracy to permit screw joint stability between abutment and fixture comparable to that of the traditional gold cast UCLA abutment.
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Affiliation(s)
- Ji-Man Park
- Department of Dentistry, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Jai-Bong Lee
- Department of Prosthodontics, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Seong-Joo Heo
- Department of Prosthodontics, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Eun-Jin Park
- Department of Dentistry, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
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Lin WS, Harris BT, Morton D. The use of a scannable impression coping and digital impression technique to fabricate a customized anatomic abutment and zirconia restoration in the esthetic zone. J Prosthet Dent 2013; 109:187-91. [PMID: 23522368 DOI: 10.1016/s0022-3913(13)60041-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This report described the fabrication of a customized anatomic abutment and zirconia restoration in the esthetic zone with a digital pathway. The implant level impression was made with a scannable impression coping and intraoral digital scanner. The milled definitive polyurethane cast with corresponding implant analog, customized anatomic abutment, and definitive zirconia restoration were made with a computer-aided design and computer-aided manufacturing (CAD/CAM) process.
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Affiliation(s)
- Wei-Shao Lin
- Department of Oral Health and Rehabilitation, School of Dentistry, University of Louisville, Louisville, KY 40202, USA.
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Rationale for the use of CAD/CAM technology in implant prosthodontics. Int J Dent 2013; 2013:768121. [PMID: 23690778 PMCID: PMC3652193 DOI: 10.1155/2013/768121] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 03/28/2013] [Indexed: 11/18/2022] Open
Abstract
Despite the predictable longevity of implant prosthesis, there is an ongoing interest to continue to improve implant prosthodontic treatment and outcomes. One of the developments is the application of computer-aided design and computer-aided manufacturing (CAD/CAM) to produce implant abutments and frameworks from metal or ceramic materials. The aim of this narrative review is to critically evaluate the rationale of CAD/CAM utilization for implant prosthodontics. To date, CAD/CAM allows simplified production of precise and durable implant components. The precision of fit has been proven in several laboratory experiments and has been attributed to the design of implants. Milling also facilitates component fabrication from durable and aesthetic materials. With further development, it is expected that the CAD/CAM protocol will be further simplified. Although compelling clinical evidence supporting the superiority of CAD/CAM implant restorations is still lacking, it is envisioned that CAD/CAM may become the main stream for implant component fabrication.
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Nayyar N, Yilmaz B, McGlumphy E. Using digitally coded healing abutments and an intraoral scanner to fabricate implant-supported, cement-retained restorations. J Prosthet Dent 2013; 109:210-5. [DOI: 10.1016/s0022-3913(13)00073-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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The use of a coded healing abutment as an impression coping to design and mill an individualized anatomic abutment: A clinical report. J Prosthet Dent 2011; 105:282-5. [DOI: 10.1016/s0022-3913(11)00056-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Eliasson A, Örtorp A. The Accuracy of an Implant Impression Technique Using Digitally Coded Healing Abutments. Clin Implant Dent Relat Res 2011; 14 Suppl 1:e30-8. [DOI: 10.1111/j.1708-8208.2011.00344.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ozçelik TB, Yilmaz B. A modified plastic shell technique for cement-retained implant restorations. J ORAL IMPLANTOL 2010; 36:291-4. [PMID: 20735265 DOI: 10.1563/aaid-joi-d-09-00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The best possible fit of prosthetic components should be the aim of the clinician. The technical report presented here describes the use of a modified plastic shell technique for modeling a cement-retained single-implant restoration. This approach will help to prevent potential errors caused by the wax modeling technique.
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Affiliation(s)
- Tuncer Burak Ozçelik
- Başkent University, Faculty of Dentistry, Department of Prosthodontics, Ankara, Turkey
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19
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Design of a custom angled abutment for dental implants using computer-aided design and nonlinear finite element analysis. J Biomech 2010; 43:1941-6. [DOI: 10.1016/j.jbiomech.2010.03.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 03/10/2010] [Accepted: 03/11/2010] [Indexed: 11/20/2022]
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20
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Ganz SD. Computer-aided design/computer-aided manufacturing applications using CT and cone beam CT scanning technology. Dent Clin North Am 2008; 52:777-vii. [PMID: 18805229 DOI: 10.1016/j.cden.2008.07.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
CT and cone-beam CT technology provides clinicians with new methods to view patient anatomy exceeding conventional two-dimensional radiology. Interactive software applications allow for improved interpretation of the CT scan data. Proper use of this new technology must be based on a solid foundation of fundamental surgical and prosthodontic protocols. Advances in software and associated hardware have empowered clinicians with the necessary tools to harness the technology, while remaining true to conventional standards. The enhanced capability of innovative software applications that allow clinicians to interpret and maneuver through various three-dimensional images has far-reaching implications when interactive treatment planning software is combined with computer-aided design and manufacturing. Using all available virtual tools, true restoratively driven implant dentistry can be accomplished, ultimately benefiting patients.
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Affiliation(s)
- Scott D Ganz
- Prosthodontics, Maxillofacial Prosthetics & Implant Dentistry, 158 Linwood Plaza, Fort Lee, NJ 07024, USA.
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21
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Del Corso M, Abà G, Vazquez L, Dargaud J, Dohan Ehrenfest DM. Optical three-dimensional scanning acquisition of the position of osseointegrated implants: an in vitro study to determine method accuracy and operational feasibility. Clin Implant Dent Relat Res 2008; 11:214-21. [PMID: 18657149 DOI: 10.1111/j.1708-8208.2008.00106.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE Manufacturing complex prosthetic framework on osseointegrated implants requires precision at every step of execution. The purpose of this study was to verify the possibility of applying the technology of image acquisition to determine the spatial position of osseointegrated implants. MATERIALS AND METHODS An optical three-dimensional scanning technique was employed: its measurement systematic error (bias) was calculated by comparing the results with the detection on a coordinates measuring machine. Measurements were carried out on master casts by doing an in vitro simulation of intraoral conditions. RESULT This study showed that the bias error value of the three-dimensional optical acquiring system was situated between 14 and 21 microm. CONCLUSION As far as the accuracy is concerned, it seems possible to use the three-dimensional image acquisition technology as a valid alternative to traditional impression-making procedures. However, the bias levels obtained in this in vitro study will have to be confirmed in a clinical trial.
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Affiliation(s)
- Marco Del Corso
- Department of Periodontology, Turin University, Turin, Italy
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