Intraoral scanner comparison 2022. Almost double a Medit i500. The options of not filling holes and excluding unreliable data RMSD values between each intraoral scan were calculated to assess precision. An award winning scanner! Virtuo Vivo™ won the Most Improved Intraoral Scanner as well as the People’s Choice Awards 3 rd Place best scanner of 2022, voted by over 3,500 dentists from around the world. Dent. Similar to other three-dimensional (3D) scanners, they project a light source (laser, or more recently, structured light) onto the object to be scanned, in this case the dental arches, including prepared teeth and implant scanbodies (i. 08. e. CEREC, TRIOS, Medit, Itero etc price comparison. Among so many products, it is important to know how to sort, recognize and choose the best best intraoral scanner for you. 2022 May 5;S0022-3913(22)00195-0. This allows dentists to get a detailed image of the patient’s mouth. In addition to their recognized value for obtaining 3D digital dental models, intraoral scanners (IOSs) have recently been proven to be promising tools for oral health diagnostics. In this comparison we have focused on scanners that were announced and available for demo. 2022, 10, 112 3 of 14 However, despite these advantages, intraoral scanners require an initial investment and that the clinician has the ability to ensure adequate scanning [34]. Ahmad Al-Hassiny, BDS (Hons) Dentistry is undergoing a radical evolution with the adoption of digital technologies and, in particular, intraoral scanners (IOSs) skyrocketing worldwide. Higher accuracy means fewer repeat impressions are required, restorations fit the patient better and treatment times are shorter which leads to improvements across the practice and a better patient experience overall. Róth et al. Below you will find our comparison of the intraoral scanners at IDS 2019. Objectives: to evaluate trueness and precision of digital casts from intraoral scanning (IOS) and cone beam computed tomography (CBCT); trueness and precision of 3D-printed casts using digital light processing (DLP) and fused deposition modeling (FDM); the influence of digitizing method in the 3D-printed casts and, to compare STL data after DICOM segmentation and conversion. If we are looking all the way back to 2022, this award goes to 3Shape TRIOS 5. The scans made with a OBJECTIVE: Digital dentistry uses digital technologies and computers. Oct 24, 2023 · The analysis demonstrated that the accuracy of intraoral scanning is influenced by various factors such as scanner selection, operator skill, calibration, patient’s oral anatomy, ambient conditions, and scanning aids. 1. Schubert O, Erdelt KJ, Tittenhofer R, et al. Objectives: To assess the validity of an intraoral scanner system featuring near-infrared (NIR) transillumination to aid the detection of proximal caries lesions, and to compare the diagnostic performance of this system with that of conventional caries detection methods and with that of an intraoral camera featuring NIR transillumination (DIAGNOcam). (2021). Feb 10, 2022 · Key Players - Align Technologies, Sirona, 3Shape, Carestream, PlanmecaPune, Feb. Prices start from $14,000 USD. J Prosthet Dent 2022; 128 Bilhan H, Bilgin T. Maintaining updated software and understanding factors beyond scanner resolution are crucial for optimal accuracy. com Mar 17, 2023 · The Best Intraoral Dental Scanners. 10, 2022 (GLOBE NEWSWIRE) -- Intraoral Scanner market was valued at 18. May 9, 2023 · In the present study, the scanning time of both intraoral scanner devices (Trios 4 and Primescan) decreased during 15 digital impressions obtained by dental students. Public Health 2022, 19, 1407 Jan 27, 2022 · Intraoral scanners, especially, have gained traction within orthodontics. 1. 1016/j. The report on the intraoral scanners market provides a holistic analysis, market size and forecast, trends, growth drivers, and challenges, as well as vendor analysis covering around 25 vendors. Methods: Search without restrictions in seven databases (Pubmed, CENTRAL, Cochrane Reviews Mar 8, 2023 · Primescan is a fast intraoral scanner. The aim of the present in vivo study was to determine the learning curve required by dental students for intraoral Apr 18, 2023 · ISO 12836:201 5. Jan 12, 2024 · Official Website. 77), Medit i700 (4. , 2022;Mizumoto & Yilmaz, 2018 Dec 1, 2022 · The purpose of this in vitro study was to evaluate the trueness of scanning the post space up to 20 mm with an intraoral scanner (IOS). In regards to support - Medit i700 wireless was rated the highest (4. jdent. 2014. 2017;2017:8427595. When comparing to other popular scanners on the market, these tend to range from $18,000 - $70,000 USD depending on what generation scanner you purchase. ’s study broadens the scope of QLF from dental caries or cracks to periodontal disease detection for the first time. Medit i700 Wireless (Premium Choice) 4. Intraoral scanners, especially, have gained traction within orthodontics. by Jessica Baron. 03. This will continue into 2022. doi: 10. 11. Fifteen complete-arch, mandibular, post-orthodontic treatment casts were scanned with a laboratory scanner (Identica SE 3D, Medit) as the gold standard, and with an intraoral May 20, 2020 · 2. Table of Contents. Jul 1, 2017 · Additionally, implant position, angulation, and depth (Carneiro Pereira et al. DIs are taken by IOSs, which, such as an ordinary camera, collect information about projecting light. It is one of the more affordable intraoral scanners on the market. It offers excellent lab compatibility, high-definition color, NIRI, and 3D imaging, and stands heads and shoulders above other options when it comes to ease of use. This new scanner release Rankings based on Survey Results. He is one of the few in the world who owns and has tested all mainstream scanners and CAD/CAM systems in his clinic. , (2021) In-vitro Primescan was recommended by the author for long-span prostheses. This is not a new scanner like the others we have reviewed, as it was actually released in 2019. 4 μm), followed by the Medit ® (26. The purpose of the present study was to examine the impact of scanning strategy on trueness and precision of the impression acquired from an intraoral scanner. Oral scanning is quickly replacing molding for accurate impressions in digital dentistry. , et al. BMC Oral Health (2022) 22:140 Page 3 of 17 At the time of every experiment each examined intraoral scanner were primarily used and had the newest hard- Jun 1, 2022 · Keywords: Intraoral scanners; validation; time; accuracy ∗ Contact: Dr. Shining 3D Aoralscan 3 (Best Value) 3. 6; Omnicam 5. Clin Oral Investig. OBJ - colour. That’s five generations of pushing the limits of innovation in digital dentistry. When using a digital scanner, the quality of the scan determines the accuracy of the lab Jul 22, 2022 · If you plan on simply scanning and then sending to your lab, you should check with your lab to see what file format they are comfortable with to make collaboration as easy as possible. It can do a full arch in less than 90 seconds. It stands out for making the scanning experience more comfortable for both the dentist and the patient. Three-way analysis of variance (ANOVA) was used to evaluate the influence of each variable, and Tukey HSD tests were used for multiple comparisons (α=. Dec 12, 2017 · Background. , 2021;Zhang et al. It’s perfect for getting high-precision results that patients will be happy with. *Vág, J. Judged out of Hamburg in Germany, iF awards recognize products from around the world that exhibit superior innovation and exemplary design. 2023. It involves a small wand camera — an intra-oral scanner — connected to a computer. pii: S0022–3913(17)30350–5 ; Logozzo S, Franceschini G, Kilpela A, Caponi M, Governi L, Blois L. 31). Awarded to the most aesthetically pleasing and well-designed intraoral scanner released in 2023. IOS Reviews, News Intraoral Scanner Reviews from IDS 2021 + IOS Market Update. Dentsply Sirona's Primescan (4. It usually takes 80s to scan the upper jaw with the Runyes 3DS. Objectives: The study aimed to compare the precision of ATOS industrial, 3ShapeE4, MeditT710, CeramillMap400, CSNeo, PlanScanLab desktop, and Mediti700 intraoral scanners. Oh SH et al. We also list all the scanners so you can compare which is the most expensive and which scanner is the cheapest. 05. }, author={Robert Nedelcu and Anna S K Persson}, journal={The Journal of Jan 27, 2022 · The use of digital technology has exponentially increased over recent years. The 2021 International Dental Show (IDS) in Cologne, Germany, was a drastically pared-down event this year in terms of the number of exhibitors and attendees due to the ongoing global pandemic. 2017 Jul 7. 1 μm). For a standardized analysis of occlusal and proximal caries lesions, human permanent and primary teeth (n = 64) were e … Sep 1, 2023 · DOI: 10. Right now, embracing intraoral 3D scanning can advance your work, make it easier, and elevate even further your hygiene Richert R, Goujat A, Venet L, et al. It offers clear dental impressions. Jan 24, 2020 · @article{Bilmenoglu2020InVC, title={In vitro comparison of trueness of 10 intraoral scanners for implant-supported complete-arch fixed dental prostheses. Overall, based on the survey results the top three scanners in terms of satisfaction were. J. Materials and Methods. May 7, 2021 · Intraoral scanners comparison: choose the best intraoral scanner between top brands and models. 75 million during 2023-2028, accelerating at a CAGR of 11. Dec 8, 2023 · Most of the intra-oral scanners employed in vitro provided acceptable accuracy (below a threshold of 150 μm). And of breaking barriers by seamlessly connecting dentists with leading solutions and labs through the Feb 10, 2022 · Key Players - Align Technologies, Sirona, 3Shape, Carestream, Planmeca. But to be fair we will award it to a scanner that was actually released in 2023. Dr Ahmad is a global leader in digital dentistry and intraoral scanners, carrying out lectures as a KOL for many companies and industry. Overall, this is an easy-to-use, moderately functional, and good-value intraoral scanner. Unboxing Straumann's Virtuo Vivo 2022 Update Intraoral Scanner by the Institute of Digital DentistryEDIT: The current RRP is $13,000 to $14,000 USD now. Popular products in category Intraoral 3D scanners - best products by price, features and reviews ️ Buy today - The largest online catalog of medical devices - Bimedis. Popular products in category Intraoral 3D scanners - best products by price, features and reviews ️ Buy today - The largest online catalog of medical devices - Bimedis - India. Learn about the cost of each intraoral scanner and any Dec 23, 2020 · Dr Ahmad Al-Hassiny. Moreover, the burden on the patient is low. Róth Ivett E-mail address: [email protected] doi: 10. Beck and Henry W. The reference model of a maxillary arch (Figure 1) was prepared with four implant analogs (Straumann, Basel, Switzerland) at the location of the maxillary lateral incisors and first premolars (#5, 7, 10 and 12, respectively by Universal Numbering System) by customizing a typodont (Columbia Dentoform, Lancaster, PA, USA). Mar 10, 2022 · The aim of this in vitro study was to systematically investigate new caries diagnostic tools, including three intraoral scanners, and compare them to established diagnostic methods. , 2022) IOS, which can be color‐coded, is used to assess the plaque adhesion status. The intraoral scanner you choose should enable more efficiency to your practice. Feb 1, 2024 · An IOS can record intraoral conditions as digital images, and measurements can be performed by a single operator. This study is aimed at investigating the accuracy of 10 scanners developed from 2015 to 2020. Intraoral scanners (IOS) are devices for capturing direct optical impressions in dentistry [1–3]. Methods: Search without restrictions in seven databases (Pubmed, CENTRAL, Cochrane Reviews Link to Full Article: https://dentalresourceasia. 2017. In vitro comparison of trueness Nov 5, 2022 · The research hypothesis was that intraoral scanners would indicate acceptable shade matching accuracy and precision compared with a standard device or method in tooth shade selection. Jul 1, 2021 · The Medit i700 is one of the most recent intraoral dental 3D scanners to enter the market, in fact, it was just launched in April of this year, 2021. intraoral. Mar 20, 2019 · Intraoral Scanner Reviews from IDS 2019. Four years ago, it met limited success due to several factors surrounding its unsatisfactory performance. Top 7 Intraoral Dental 3D Scanners in 2024. 5), and. This validation study aimed to compare different IOSs based on objective and comprehensive Jul 3, 2023 · Abstract. Jan 27, 2022 · Conversely, Park et al. The PICO-guided research question is as follows: when shade matching, are intraoral scanners as valid as visual or other digital shade measuring Feasibility of using an intraoral scanner for a complete-arch digital scan, part 2: A comparison of scan strategies Son et al. The primary aim of this study was to compare the accuracy and veracity of three intraoral scanners (iTero ® Element Plus Series, Medit ® i500, and Planmeca ® PlanScan) in oral implant rehabilitation using an extraoral scanner as a reference. Three key features to look for are scanning speed, resolution and size, according to Park. Sep 13, 2021 · Abstract. The intraoral scanners market is forecasted to grow by USD 915. The difference between the first and last average total impression taking time showed a very significant improvement in both cases. We also see a very rapid growth in the number of IOS cases that drive digitalization throughout the clinic and across workflows. recognized. Duri Feasibility of using an intraoral scanner for a complete-arch digital scan, part 2: A comparison of scan strategies Son et al. Mar 22, 2024 · The present study aimed to systematically review the studies comparing the accuracy of intraoral scan (IOS) and conventional implant impressions (CI) in completely edentulous patients. Feasibility of using an intraoral scanner for a complete-arch digital scan, part 2: A comparison of scan strategies Son et al. , 2022; Jung et al. Intraoral cameras use video Feasibility of using an intraoral scanner for a complete-arch digital scan, part 2: A comparison of scan strategies Son et al. In this work, the most recent literature on IOSs was reviewed with a focus on their applications as detection systems of oral cavity pathologies. https: 3D optical intraoral scanners and comparison of The present in vitro study compared nine different intra-oral scanners (Omnicam 4. The scanner helps clinicians always achieve predictable results and create dental restorations that fit precisely. 2022. prosdent. Dec 1, 2014 · DOI: 10. Before scanning with TDS, a single layer of titanium dioxide powder (Lava Powder, 3M, USA) was sprayed onto the surface of the master model, according to the manufacturer’s instructions, to minimize Feb 6, 2024 · The IOS Trios 4 was studied as one of the two intraoral-scanner-based caries detection tools. There is no uniform rating system based on a defined set of aspects that has reported in the literature that can be used to compare these devices. Fields and Toru An award winning scanner! Virtuo Vivo™ won the Most Improved Intraoral Scanner as well as the People’s Choice Awards 3 rd Place best scanner of 2022, voted by over 3,500 dentists from around the world. The iDD Intraoral Scanner Awards 2022 were chosen by the Institute Of Digital Dentistry, one of the largest global digital dentistry Jan 28, 2023 · 1. Sep 1, 2022 · by Dr Ahmad Al-Hassiny. 00 μm) followed by the iTero ® (19. Jun 1, 2023 · The Virtuo Vivo features: When you do an intraoral scanner comparison, iTero stands out as the best option for most practices. See full list on meetdandy. Of surpassing expectations to deliver unmatched ease-of-use, award-winning design, and peace of mind. It is also mentioned that, as per patients’ comfort and convenience, iTero was rated higher in comparison with TRIOS [46]. Intraoral scanner technologies: a review to make a successful impression. Concerning the limitations of this study, we have to point out that the intraoral scanners is a light optical system. scanner brand. The aim of this systematic review is to provide a comprehensive and in-depth assessment of available studies to determine the viability of using intraoral scanners for the purpose of shade matching. Methods: Four plastic dentate models with 7-12 abutments prepared for complete In this PDF you will have access to an accurate and regularly updated price guide which clearly explains the cost of each scanner. Scanning speed is becoming less of a differentiating factor, as the technological advancement has plateaued. 027 Corpus ID: 24469911; Scanning accuracy and precision in 4 intraoral scanners: an in vitro comparison based on 3-dimensional analysis. The objective of the present review is to investigate the available evidence to create an up-to-date presentation of various clinical aspects of intraoral scanners in orthodontics. 2022, 10, 123 3 of 10 At the end of each scan, scanning time was recorded and the files were post-processed by Medit Link. Apr 26, 2022 · Background The evolution of intraoral scanners (IOSs) is rapid, and new IOSs appear on the market with different properties depending on the manufacturers. J Healthc Eng. The 4-day event was delayed from its traditional March date in 2021 to September in hopes Jun 15, 2022 · In all clinical scenarios, the iTero ® scanner had the best trueness (24. Medit i700 wireless (4. Accuracy. 49). It’s all thanks to its scanning speed. Here's our breakdown: 1. Results: For trueness evaluation, tip size was the only significant factor (P<. 3SHAPE D750. Within the development of digital technologies, dental professionals aim to integrate virtual diagnostic articulated casts obtained by using intraoral scanners (IOSs), the mandibular motion of the patient recorded by using an optical jaw tracking system, and the information provided by computerized occlusal analysis systems. ajodo. iTero Element 2 (Best Choice) 2. 001). But like Fussen, this one doesn’t have AI to remove distractions, so dentists still face distractions from non-dental structures during the scan. Alliedstar AS 200E. 20 μm) and Planmeca ® (34. com/Best Intraoral Jun 15, 2022 · We have used the best-fit algorithm in our study. The cost of the CS 3700 is $47,000 NZD or approximately $32,000 USD. STL is the file type most commonly exported. , 2021), as well as the implant scan body design (Lawand et al. May 9, 2023 · Background The appearance of intraoral scanners (IOSs) in dental offices was an important milestones for the digital innovations in dentistry. Digital Scanners. 05). 61), followed by Planmeca Emerald (4. On the 20th of April 2022, Medit announced the newest member of the Medit scanners at their online launch event- the i700 wireless. 72 Million USD in 2021 and will grow with a Jul 4, 2022 · Abstract. In contrast to the Emerald S, the same scanning tip can be used for 3D scanning and caries detection. The model was scanned 5 times with each intraoral scanner (IOS Feasibility of using an intraoral scanner for a complete-arch digital scan, part 2: A comparison of scan strategies Son et al. Reproducible tissues are shown on the hardware display as natural looking. Updated Mar 17, 2023. Take your dentistry to the next, digital level! 3SHAPE D750. How To Choose The best intraoral scanner On Customer Reviews in 2022. The model was scanned 5 times with each intraoral scanner (IOS Feb 11, 2022 · systems has been accompanied by the introduction of digital impression (DI) using intraoral scanners (IOSs) within a fully digital workflow. Dental 3D scanners are the future – they are also the present that patients are asking for. Nov 3, 2021 · Based on our findings, we established the four criteria every dentist should consider while choosing an intraoral scanner—accuracy, price, software capability, and ease of use—and there's one scanner that stands out. Planmeca Emerald S captures digital impressions in vivid and true-to-life colours. The trueness and accuracy of Planmeca Emerald S intraoral scanner has been proven in an independent scientific study*. 104697 Corpus ID: 261673981; Comparison of intraoral and laboratory scanners to an industrial-grade scanner while analyzing the fabrication trueness of polymer and titanium complete-arch implant-supported frameworks. Thus, a full-arch scan was performed following a standardized scan path that included the occlusal surface, oral surfaces and buccal surfaces. [52] found in a questionnaire study among practicing orthodontists that, among digital users, 56% reported using intraoral scanners, with iTero being the most popular (86%). In some developed countries, as many as 40% to 50% of practitioners are using these devices, and this percentage is expected to continue to rise globally. @article{Nedelcu2014ScanningAA, title={Scanning accuracy and precision in 4 intraoral scanners: an in vitro comparison based on 3-dimensional analysis. Apr 1, 2018 · DOI: 10. Knowing the learning curve for intraoral scanning is crucial, because it can serve as a guideline for clinicians before buying a new IOS. The second aim was to compare the trueness of Mediti700 assessed by ATOS and desktop scanners. Unbox Dec 7, 2023 · The VivaScan is Ivoclar Vivadent’s very first intraoral scanner. Introduction. Methods We captured 20-, 18-, 16-, 14-, 12-, and 10-mm length post space scans using an IOS (Primescan) eight times each by shortening the apical 2 mm end of the same mandibular canine tooth . A comparative analysis of intraoral 3D digital scanners for restorative dentistry. Average price: 2 985. September 1, 2022. Oct 1, 2022 · Standalone scanners: These scanners convert intraoral scanning data into 3D models, which they either store as image files or finish the design using CAD software [4] [T able/Fig-1]. It is the same as the Planmeca Emerald S scanner but with a different software and price point. We concluded that the iTero ® scanner had the highest reproducibility and accuracy The adaption of Intraoral scanner IOS dramatically accelerated in 2021. Apr 6, 2023 · Objectives. The Medit ® showed the best precision (18. 36), and Medit i500 (4. Accuracy, scanning time, and number of photograms of various scanning patterns for the extraoral digitalization of complete dentures by using an intraoral scanner J Prosthet Dent . 68% during the forecast period. The world’s most. Penetration is already reaching 30-35% in the US and mature markets. * For 12 of 14 teeth Primescan showed no differences in accuracy (RMS value) to one or both laboratory scanners. 4 μm) and Planmeca ® (42. A maxillary dental model with reference points was printed from Form 2 (FormLabs, Somerville, MA, USA). 30 μm). As one of the world’s most celebrated and valued design competitions, the iF DESIGN AWARD is recognized as a symbol of design excellence around the world. Download : Download high-res image (333KB) Download : Download full-size image; Figure 1. Scanning resolution is important, as it determines how clean and detailed the image is. Jun 15, 2022 · The primary aim of this study was to compare the accuracy and veracity of three intraoral scanners (iTero® Element Plus Series, Medit® i500, and Planmeca® PlanScan) in oral implant rehabilitation using an extraoral scanner as a reference. Jan 27, 2022 · Intraoral scanners, especially, have gained traction within orthodontics. A secondary aim was to determine whether the area scanned influences the accuracy of the data obtained Mar 10, 2022 · Among children and adolescents, for whom regular bitewing radiographs may be contraindicated with regard to X-ray exposure, a radiation-free intraoral scan could be an additional helpful tool for routine dental examinations. The 4-day event was delayed from its traditional March date in 2021 Feb 8, 2022 · Intraoral Scanner Reviews from IDS 2021 + IOS Market Update. The VivaScan is a standalone intraoral scanner that is said to be easily integrated into your clinical workflow. 017. Pune, Feb. Today, BLZ announced that it has received one such award for INO100 Intraoral Scanner in 2022 May 9, 2022 · Key Features. The iDD Intraoral Scanner Awards 2022 were chosen by the Institute Of Digital Dentistry, one of the largest global digital dentistry . 017 Corpus ID: 4746314; Comparison of digital intraoral scanners and alginate impressions: Time and patient satisfaction @article{Burzynski2018ComparisonOD, title={Comparison of digital intraoral scanners and alginate impressions: Time and patient satisfaction}, author={Jennifer A Burzynski and Allen Firestone and Michael F. The most common file types to look for are: STL - monochrome. There have been various developments in intraoral 3D scanning technology. 2022. PLY - colour. }, author={Caglar Bilmenoglu and Altug Cilingir and Onur Geçkili and Hakan Bilhan and Tayfun Bilgin}, journal={The Journal of prosthetic dentistry}, year={2020}, url={https://api Apr 13, 2022 · In this study, the following intraoral scanners were used: 3M True Definition Scanner (TDS, 3M, USA) and 3Shape Trios3 (TR3, 3Shape, Denmark). The Virtuo Vivo is an intraoral scanner made by Dental Wings which is owned by the Straumann Group. Influence of intraoral scanning on the quality of preparations for all-ceramic single crowns. cylinders screwed on the implants, used for Sep 16, 2022 · Runyes is a brand born in Ningbo, China. Compared to its predecessor, the Medit i500, the i700 is 25% smaller and 12% lighter (245g). Intraoral scanners (IOS) have revolutionized conventional impression-taking in all dentistry fields, especially in prosthodontics, which facilitates the fabrication of fixed restorations in the digital workflow []. com/product-update-intraoral-scanners-2022Link to DRA Website: https://dentalresourceasia. 103964 Journal of Dentistry 121 (2022) 103965 Analysis of cervical movements with accelerometer: Comparison between healthy and TMD patients Laura Gamba ∗ , Chiara Clerici , Alessandro Sep 13, 2021 · Abstract. With the development of the internet, online platforms offer a variety of products to their audience. This comparison is based on the combined effort and opinions of Dr Hamid Al-Hassiny, Dr Haidar Al-Hassiny and myself, Dr Ahmad Al-Hassiny. An intraoral scanner for digital impressions is a must-have device to optimize clinic workflows and improve the patient experience. 1; Primescan Jan 27, 2022 · The accuracy and reproducibility of intraoral scanners, in comparison to conventional methods, were investigated in several studies, with controversial results. Flow diagram for tooth shade matching of intraoral scanners. 2020;24 (12):4511-4518. Dr Ahmad Al-Hassiny is a full-time private dentist in New Zealand and Apr 12, 2022 · Contrary to the CBCT and intraoral scanner technology, quantitative light-induced fluorescence (QLF) technology mainly focuses on the early detection of pathologic lesions of the teeth surface. 72 Million USD in 2021 and will grow with May 4, 2023 · Comparison of digital intraoral scanner reproducibility and image trueness considering repetitive experience. J Prosthet Dent. Electronic searches were performed in PubMed, Embase and Cochrane CENTRAL up to December 1, 2023. Intraoral assessment using IOS has been reported in recent years (Giese‐Kraft et al. jy xe ji va nj nh lx ey xi xk