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Artykuły w czasopismach na temat „Extraoral scanner”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Cai, HongXin, Bing Cheng Zhao, Yueyi Tian, et al. "Design of a Single-Tooth Model and Its Application in Oral Scan System Assessment." Scanning 2021 (March 21, 2021): 1–8. http://dx.doi.org/10.1155/2021/8891396.

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Intraoral scanners have been widely used in the application of dentistry. Accuracy includes trueness and precision; they have an important position in the assessment of intraoral scanners. The existing standard models are divided into the inlay and the crown, but the operation is relatively complicated. In this study, in order to simplify the current standard model, we designed a new integration model to compare the accuracy of two intraoral scanners (CEREC and TRIOS) and an extraoral scanner (SHINING). The coordinate measuring machine measured value is the gold standard. Values of the length

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Sampaio-Fernandes, Manuel António, Ricardo Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Marques, and Maria Helena Figueiral. "Accuracy of Extraoral Digital Impressions with Multi-Unit Implants." Applied Sciences 13, no. 15 (2023): 8769. http://dx.doi.org/10.3390/app13158769.

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The aim of this in vitro study was to evaluate the accuracy of impressions made using two different silicones and corresponding stone casts in full-arch implant rehabilitation, using two laboratory scanners. A master model with six dental implants was created, scanned with a 12-megapixel scanner and used as digital master model. Ten implant impressions were obtained via two silicone impressions systems—Coltene® and Zhermack®—using the open-tray technique and poured gypsum. Two extraoral scanning systems (S600 ARTI Zirkonzhan® and Identica T500 Medit®) were used to scan the impressions and ston

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Pawar, Prasanna, Akanksha Katkade, Kishor M. Mahale, Smita Khalikar, and Vilas Rajguru. "Comparative evaluation of accuracy of post space scanned with three different techniques." International Journal of Oral Health Dentistry 9, no. 3 (2023): 201–4. http://dx.doi.org/10.18231/j.ijohd.2023.037.

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The aim of this in vitro study is to compare three different techniques of scanning post space at different depths.The important factor for success of treatment depends on endodontic treatment as well as by restoring it with prosthodontic treatment. The post is mainly used to retain and hold the core so that crown prosthesis can be given.Fifteen freshly extracted single rooted teeth were selected and endodontically treated. Post space were created. Total Sample size taken was fifteen. There were three groups each with sample size of five. First group consist of Post space scanned with Omnicam

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Lee, Sang J., Soo-Woo Kim, Joshua J. Lee, and Chan W. Cheong. "Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision." Dentistry Journal 8, no. 2 (2020): 52. http://dx.doi.org/10.3390/dj8020052.

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The aim of this study was to evaluate the surface topography and the precision measurements of different intraoral and extraoral digital scanners. A reference model of a maxillary arch with four implant analogs was prepared and scanned by three intraoral and two extraoral scanners. The reference model was scanned fifteen times with each digital scanning system, investigating the surface topography and precision measurements for the same-arch and cross-arch measurements. The data was exported to 3D inspection and mesh-processing software (GOM Inspect, Braunschweig, Germany). Statistical analysi

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Costa, Vitória, António Sérgio Silva, Rosana Costa, Pedro Barreiros, Joana Mendes, and José Manuel Mendes. "In Vitro Comparison of Three Intraoral Scanners for Implant—Supported Dental Prostheses." Dentistry Journal 10, no. 6 (2022): 112. http://dx.doi.org/10.3390/dj10060112.

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With continuing technological developments, there have been advances in the field of fixed prosthetics, particularly in impression-taking techniques. These technological advances mean that a wide variety of diagnostic and/or rehabilitation possibilities can be explored without the need for physical models. The aim of this study was to evaluate the accuracy of three intraoral scanners used in oral implant rehabilitation using an extraoral scanner as a reference and varying the scanning area. Three models representing different clinical scenarios were scanned 15 times by each intraoral scanner a

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Gomes, Grazielle Franco, Mónica Estefanía Tinajero Aroni, Lucas Portela Oliveira, João Neudenir Arioli Filho, Carolina Mollo Binda, and Francisco de Assis Mollo Júnior. "Implant digital impression accuracy using extraoral scanners." Brazilian Journal of Oral Sciences 22 (July 10, 2023): e238354. http://dx.doi.org/10.20396/bjos.v22i00.8668354.

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Aim: To analyze the accuracy of extraoral systems (Ceramill Map400+, AutoScan-DS200+, and E2) in full implantprosthetic rehabilitation three-dimensionally. Methods: A metallic edentulous maxilla with four implants was digitalized by a contact scanner (MDX-40 - Roland, control) and used as a control image to compare with other images generated by three laboratory scanners (10 samples per group). Letters identified all the four components: A and D angled 45º, and B and C parallel. The BioCAD software exported the images (.STL) to compare and verify deviations of the analogs on the X, Y, and Z ax

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7

Shah, Naisargi, Mrinmyaee Thakur, Shruti Gill, et al. "Validation of Digital Impressions’ Accuracy Obtained Using Intraoral and Extraoral Scanners: A Systematic Review." Journal of Clinical Medicine 12, no. 18 (2023): 5833. http://dx.doi.org/10.3390/jcm12185833.

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Background: At present, the evidence regarding digital impressions’ accuracy recorded by using digital scanners is lacking. This systematic review aimed to evaluate whether the type of scanning (intraoral/extraoral) affects the Accuracy of Digital Impressions. Method: Two independent reviewers performed a systematic search in the database both electronically and manually (PubMed, Ebsco HOST, the Cochrane Library, and Google Scholar) for articles published from 1 January 2010 to 1 December 2022. This study was registered with the International Prospective Register of Systematic Reviews (PROSPER

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8

Cui, Naiyu, Jiayin Wang, Xingyu Hou, et al. "Bias Evaluation of the Accuracy of Two Extraoral Scanners and an Intraoral Scanner Based on ADA Standards." Scanning 2021 (June 10, 2021): 1–13. http://dx.doi.org/10.1155/2021/5535403.

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The spread and application of computer-aided design/computer-aided manufacturing (CAD/CAM) technology have contributed to the rapid development of digitalization in dentistry. The accuracy of scan results is closely related to the devising subsequent treatment plans and outcomes. Professional standards for evaluating scanners are specified in the American National Standard/American Dental Association Standard 132 (ANSI/ADA No. 132). The aims of this study were to use the three samples mentioned in ANSI/ADA No. 132 and evaluate the accuracy and reproducibility of two extraoral scanners and an i

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9

Al-Dulaijan, Yousif A., Haidar Alalawi, Mohammed M. Gad, Faisal D. Al-Qarni, Shaimaa M. Fouda, and Passent Ellakany. "Trueness and precision of complete denture digital impression compared to conventional impression: an in vitro study." PeerJ 13 (February 26, 2025): e19075. https://doi.org/10.7717/peerj.19075.

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Background This study aimed to compare the precision and trueness of digital impressions of the edentulous arch made with different scanners to conventional physical impressions. Methods A total of 40 impressions of a completely edentulous maxillary arch model (n = 10) were made using different digital impressions with an extraoral scanner, E3 3Shape desktop scanner, as the reference scan, intraoral scanner (TRIOS IOS, and Medit IOS) and Vinyl Polysiloxane impressions (VPS) impression using a Computer-Aided Design and Computer-Aided Manufacturing (CAD-CAM) custom tray. The VPS impression was s

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10

Kasahara, Takumi, Meiko Oki, Shingo Kamijo, and Hidekazu Takahashi. "Accuracy of the Conventional Facial Impression Method and Three-Dimensional Auricular Shape Data Obtained Using Extra- and Intraoral Optical Scanners." Dentistry Journal 12, no. 11 (2024): 354. http://dx.doi.org/10.3390/dj12110354.

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Background: Facial impression methods have been used to fabricate auricular prostheses; however, deformation due to the weight of the impression material remains. This study aimed to investigate the accuracy of auricular three-dimensional (3D) data obtained using a 3D optical extraoral scanner and an intraoral scanner compared with that of a conventional facial impression method. Methods: Six auricles were digitized using an extraoral scanner with and without a reference board around the auricle and an intraoral scanner. Auricle casts fabricated using auricle impressions were scanned using a l

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11

Sampaio-Fernandes, Manuel António, Ricardo Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Marques, and Maria Helena Figueiral. "Trueness of Extraoral Digital Impressions for Full-Arch Implant Impressions—In Vitro Study." Materials 17, no. 12 (2024): 2932. http://dx.doi.org/10.3390/ma17122932.

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Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the trueness of impressions obtained with two types of silicone and their corresponding stone casts, using two laboratory scanners in a full-arch implant rehabilitation. A master cast with six dental implants was scanned with a 12-megapixel scanner to obtain a digital master cast. Ten implant impressions were made using two silicones (Zhermack and Coltene) with the open-tray technique. The impressions and stone casts were scanned b

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12

Şentürk, Ayben, Bora Akat, Mert Ocak, Mehmet Ali Kılıçarslan, and Kaan Orhan. "Comparison of Marginal and Internal Fit of CAD/CAM Ceramic Inlay Restorations Fabricated Through Model Scanner, Intraoral Scanner, and CBCT Scans." Applied Sciences 15, no. 9 (2025): 4626. https://doi.org/10.3390/app15094626.

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Background and Objectives: CBCT images have been successfully used for CAD/CAM crown restorations; however, their use for ceramic inlay restorations remains unclear. This study aimed to evaluate the marginal and internal fit of CAD/CAM ceramic inlay restorations fabricated using intraoral scanner, model scanner, and CBCT data. Materials and Methods: Inlay preparations were performed on 11 mandibular molar typodont teeth. The teeth were scanned using an intraoral scanner, an extraoral scanner, and CBCT (0.075 mm voxel size). CBCT-generated DICOM data were converted to STL format with dedicated

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13

Jivanescu, Anca, Andrei-Bogdan Faur, and Raul Nicolae Rotar. "Can Dental Office Lighting Intensity Conditions Influence the Accuracy of Intraoral Scanning?" Scanning 2021 (May 27, 2021): 1–10. http://dx.doi.org/10.1155/2021/9980590.

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The aim of this study was to evaluate the influence of different settings of ambient light intensity inside the dental office on the accuracy (trueness and precision) of an intraoral scanner (IOS). A full crown preparation was conducted on a resin molar which was scanned using a high resolution extraoral scanner to obtain a reference model. Six light settings were chosen based on the most clinically relevant light conditions inside the workspace, and the preparation was scanned using an intraoral scanner (PlanScan, Planmeca). The obtained data was analyzed using a professional 3D quality contr

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14

Nulty, Adam Brian. "An In Vivo Comparison of Trueness and Precision of Two Novel Methods for Improving Edentulous Full Arch Implant Scanning Accuracy: A Pilot Study." Dentistry Journal 12, no. 11 (2024): 367. http://dx.doi.org/10.3390/dj12110367.

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Background: This retrospective in vivo study evaluated the trueness and precision of two digital intraoral scanners—Dentsply Sirona Primescan and Medit i900—, both with and without two variants of the novel Scan Ladder aids, and compared their performance to a new intraoral photogrammetry scanner (Shining 3D Elite). Methods: Data from ten edentulous patients, previously collected during routine clinical treatment, were analyzed using a master STL generated from traditional impression casts as the reference. A custom positional change calculator and comprehensive statistical analysis were used

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15

Cai, Hong Xin, Qi Jia, HaoYu Shi, et al. "Accuracy and Precision Evaluation of International Standard Spherical Model by Digital Dental Scanners." Scanning 2020 (December 8, 2020): 1–6. http://dx.doi.org/10.1155/2020/1714642.

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With the popularization of digital technology and the exposure of traditional technology’s defects, computer-aided design and computer-aided manufacturing (CAD/CAM) has been widely used in the field of dentistry. And the accuracy of the scanning system determines the ultimate accuracy of the prosthesis, which is a very important part of CAD/CAM, so we decided to evaluate the accuracy of the intraoral and extraoral scanners. In this study, we selected the sphere model as the scanning object and obtained the final result through data analysis and 3D fitting. In terms of trueness and precision, t

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16

Zotti, Francesca, Luca Rosolin, Massimo Bersani, Andrea Poscolere, Davide Pappalardo, and Nicoletta Zerman. "Digital Dental Models: Is Photogrammetry an Alternative to Dental Extraoral and Intraoral Scanners?" Dentistry Journal 10, no. 2 (2022): 24. http://dx.doi.org/10.3390/dj10020024.

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Background: 3D models are nowadays part of daily clinical practice. Photogrammetry is a brand-new method for transforming small objects into 3D models while keeping their original shape and size. The aim of this study was to evaluate the accuracy, in terms of precision and trueness, of a digital dental model acquired with photogrammetry compared with those obtained using extraoral scanners and intraoral scanners, starting from the same plaster model. Methods: A plaster model was converted into a digital model using photogrammetry, an extraoral scanner and an intraoral scanner. Different refere

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17

Katbeh, I., T. F. Kosyreva, N. S. Tuturov, and A. S. Birukov. "Optimization of Dentition Measurements in Orthodontic Practice." RUDN Journal of Medicine 23, no. 4 (2019): 373–80. http://dx.doi.org/10.22363/2313-0245-2019-23-4-373-380.

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Orthodontic treatment planning is a practice that depends on the accuracy of teeth and dental arches’ size measurement. The purpose of the study is to compare the accuracy and the duration of teeth and dental arches’ measurement, utilizing different approaches from conventional plaster models to virtual 3D models obtained by intraoral and extraoral scanners. Fifteen patients were included in the study (7 males, 8 females, mean age 21.7 ± 0.7 years), with a moderate anterior teeth crowding and class I Angle’s classification of malocclusion. Plaster models, as well as virtual 3D scans were obtai

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Pantea, Mihaela, Robert Ciocoiu, Ana Maria Cristina Tancu, et al. "Comparative Study on Two Methods Used in Obtaining 3D Printed Dental Models." Materiale Plastice 56, no. 4 (2019): 812–16. http://dx.doi.org/10.37358/mp.19.4.5270.

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The purpose of this study was to assess the accuracy of two 3D printed dental models manufactured after intraoral/IO and extraoral/EO scanning. A dental study model (KaVo Dental GmbH/Germany) was used as a reference for this research; this model was scanned with an industrial scanner (XT H 225 ST/Industrial CT scan/Nikon Metrology Inc./U.S.A.) and a reference STL file was generated (coded M1). Two 3D printed models (Form2/FormLabs Inc./U.S.A.) were produced via IO scanning (TRIOS 3 Battery Cart/3 Shape/Denmark), respectively via EO scanning (Swing Dental Scanner/Dof Inc./South Korea) of the re

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Szczerbaniewicz, Blazej, Marcin Kneć, and Jan Szczerbaniewicz. "3D teeth micromovements with DIC technique and novel extraoral scanner." Journal of Dentistry 147 (August 2024): 105170. http://dx.doi.org/10.1016/j.jdent.2024.105170.

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Su, Ting-shu, and Jian Sun. "Comparison of repeatability between intraoral digital scanner and extraoral digital scanner: An in-vitro study." Journal of Prosthodontic Research 59, no. 4 (2015): 236–42. http://dx.doi.org/10.1016/j.jpor.2015.06.002.

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Akhlaghian, Marzieh, Amir-Alireza Khaledi, Seyed Ali Mosaddad, et al. "The internal and marginal adaptation of lithium disilicate endocrowns fabricated using intra and extraoral scanners: An in-vitro study." PLOS ONE 19, no. 4 (2024): e0301361. http://dx.doi.org/10.1371/journal.pone.0301361.

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Objectives The impression technique highly influences the adaptation of ceramic restorations. Not enough information is available to compare the marginal (MF) and internal fit (IF) of endocrowns fabricated with various digitization techniques. Therefore, this in-vitro study aimed to compare the MF and IF of lithium disilicate (LDS) endocrowns fabricated through direct and indirect digital scanning methods. Materials and methods One extracted maxillary molar was used to fabricate endocrowns. The digitization of the model was performed with (G1) direct scanning (n = 10) utilizing an intraoral sc

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Bawa, Dr Shubh Karmanjit Singh, Dr Parul Sharma, Dr Gurnoor Kapur, and Dr Shamsher Sandlas. "The Adoption and Impact of Dental Scanners in Dental Clinics across Punjab, India: Need of the Hour - A Questionnaire Study." Scholars Journal of Dental Sciences 11, no. 08 (2024): 90–94. http://dx.doi.org/10.36347/sjds.2024.v11i08.001.

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Background: The aim of this article was to determine the adoption and impact of dental scanners in dental clinics across Punjab, India. Materials and Methods: A questionnaire was distributed via Google Forms to 450 dental clinics to gather data on the usage, benefits, and challenges associated with dental scanners. The findings highlight the growing trend of digital dentistry and its implications for clinical practice. Results: The survey conducted across 450 clinics in Punjab revealed that 60% of clinics do not use dental scanners, highlighting a significant gap in the adoption of this techno

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Pasini, Marco, Elisabetta Carli, Federico Giambastiani, Maria Rita Giuca, and Domenico Tripodi. "Three-Dimensional Analysis of Upper and Lower Arches Using Digital Technology: Measurement of the Index of Bolton and Correspondence between Arch Shapesand Orthodontic Arches." Dentistry Journal 11, no. 8 (2023): 188. http://dx.doi.org/10.3390/dj11080188.

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Introduction: Thanks to the great development of digital technology, viaCAD (computer-aided design) and CAM (computer-aided manufacturing) systems, digital models canbe used as an aid for orthodontic planning decision-making processes as there are numerous studies in the literature that support the validity ofthe digital model measurements of anterior teeth and the total coefficient of Bolton analysis. The aim of the present study isto compare the average length value of the current upper and lower arches with that of a hypothetical nickel–titanium wire and to confirm the reliability and accur

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Sampaio-Fernandes, Manuel António, Ricardo Jorge Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Nuno Silva Marques, and Maria Helena Figueiral. "Direct vs. Indirect Digital Implant Impressions: A Time and Cost Analysis." Dentistry Journal 12, no. 11 (2024): 340. http://dx.doi.org/10.3390/dj12110340.

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Background/Objectives: This study aimed to compare the cost and time implications for implant-supported prosthesis comparing three digital impression techniques: digitization with an intraoral scanner, digitization of the conventional impression (without dental casts) and digitization of the stone models. Methods: To assess the time and cost of digital impression techniques on implants, time records on intraoral scans were consulted and three models were created with one, two and six implants to assess extraoral procedures time. Costs were evaluated based on material consumption, time expendit

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Alubaidi, Ahmed Abduljawad, Nagham Kassab, and Hasan Mohialdeen. "A Comparative Evaluation of the Accuracy between the Extraoral Scanner (Rainbow) and Intraoral Scanner (Medit I500) Digital Impressions in Vitro." Al-Rafidain Dental Journal 24, no. 2 (2024): 373–79. http://dx.doi.org/10.33899/rdenj.2022.136720.01178.

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Alubaidi, Ahmed Abduljawad, Nagham Kassab, and Hasan Mohialdeen. "A Comparative Evaluation of the Accuracy between the Extraoral Scanner (Rainbow) and Intraoral Scanner (Medit I500) Digital Impressions in Vitro." Al-Rafidain Dental Journal 24, no. 2 (2024): 0. http://dx.doi.org/10.33899/rdenj.2022.136720.1178.

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Garaicoa, Jorge, Carlos A. Jurado, Kelvin I. Afrashtehfar, Abdulaziz Alhotan, and Nicholas G. Fischer. "Digital Full-Mouth Reconstruction Assisted by Facial and Intraoral Scanners: A Case Report and Technique Description." Applied Sciences 13, no. 3 (2023): 1917. http://dx.doi.org/10.3390/app13031917.

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This report describes a technique integrating facial and dental scanners for treatment planning and execution of a tooth-borne full-mouth reconstruction (FMR) with zirconia fixed prostheses. A partially edentulous female adult presented generalized worn dentition in the incisal and occlusal surfaces. The patient accepted the option for treatment with a fixed FMR solution using a fully digital workflow. An intraoral scan (IoS) for both arches and facial scans collected the initial clinical situation. A digital diagnostic wax-up was generated as part of the treatment plan, and the models were pr

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Tae-Hee, Lee, Lee Ha-Bin, and Kim Ji-hwan. "Comparison of 2-dimensional marginal and internal fitness for the monolithic zirconia prosthesis using intraoral scanner and extraoral scanner: in vitro." Journal of Korean Acedemy of Dental Technology 41, no. 3 (2019): 187–93. http://dx.doi.org/10.14347/kadt.2019.41.3.187.

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Arcuri, Lorenzo, Fabrizio Lio, Veronica Campana, et al. "Influence of Implant Scanbody Wear on the Accuracy of Digital Impression for Complete-Arch: A Randomized In Vitro Trial." Materials 15, no. 3 (2022): 927. http://dx.doi.org/10.3390/ma15030927.

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The aim of this study was to evaluate the influence of implant scanbody (ISB) wear on the accuracy of digital impression for complete-arch. A polymethylmethacrylate (PMMA) edentulous mandibular model with four internal hexagonal interlocking conical connections was scanned with an extraoral optical scanner to achieve a reference file. Four cylindrical polyetheretherketone (PEEK) ISBs were scanned 30 times with IOS, and the test files were aligned to the reference file with a best-fit algorithm. For each analog linear (ΔX, ΔY and ΔZ-axis) and angular deviations (ΔANGLE) were assessed. Euclidean

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Alyammahi, Bayan, Amar Hassan Khamis, and Ahmed Ghoneima. "Accuracy of One-Piece vs. Segmented Three-Dimensional Printed Transfer Trays for Indirect Bracket Placement." Dentistry Journal 12, no. 11 (2024): 352. http://dx.doi.org/10.3390/dj12110352.

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Objective: To assess the accuracy of three-dimensional (3D) printed one-piece vs. multiple segmented transfer trays for indirect bonding techniques in moderate and severe crowding cases. Methods: Eighty digital maxillary dental models were produced by an extraoral scanner. 3D-printed one-piece and segmented trays were virtually designed utilizing Maestro 3D Ortho Studio® v4 and printed using a NextDent printer. The sample was classified into two groups: Group 1 (moderate crowding) included 40 digital models with a space deficiency of 6–7 mm, and Group 2 (severe crowding) included 40 digital mo

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Bud, Eugen S., Vlad I. Bocanet, Mircea H. Muntean, et al. "Accuracy of Three-Dimensional (3D) Printed Dental Digital Models Generated with Three Types of Resin Polymers by Extra-Oral Optical Scanning." Journal of Clinical Medicine 10, no. 9 (2021): 1908. http://dx.doi.org/10.3390/jcm10091908.

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Digital impression devices are used alternatively to conventional impression techniques and materials. The aim of this study was to evaluate the precision of extraoral digitalization of three types of photosensitive resin polymers used for 3D printing with the aid of a digital extraoral optical scanner. The alignment of the scans was performed by a standard best-fit alignment. Trueness and precision were used to evaluate the models. The trueness was evaluated by using bias as a measure and the standard deviation was used to evaluate the precision. After assessing the normality of the distribut

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Dzhendov, Dzh, Iv Katreva, and Ts Ts. Dikova. "Development of treatment protocol with selective laser melted fixed partial dentures." Archives of Materials Science and Engineering 2, no. 90 (2018): 68–73. http://dx.doi.org/10.5604/01.3001.0012.0664.

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Purpose: of the present paper is to offer treatment protocol with fixed partial dentures, produced by selective laser melting, including clinical and laboratory parts. Design/methodology/approach: The treatment protocols with selective laser melted fixed partial dentures was developed on the basis of literature survey and our previous research about accuracy and mechanical properties of dental bridges, manufactured by additive technologies. Findings: The treatment protocol with fixed partial dentures, produced by selective laser melting, consisting of clinical and laboratory parts, was develop

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Martínez-Rodríguez, César, Junco-Plana Patricia, Ortega-Aranegui Ricardo, and Iglesias-Linares Alejandro. "Personalized Dental Medicine: Impact of Intraoral and Extraoral Clinical Variables on the Precision and Efficiency of Intraoral Scanning." Journal of Personalized Medicine 10, no. 3 (2020): 92. http://dx.doi.org/10.3390/jpm10030092.

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(1) Objectives: The aim is to measure the influence of different intraoral (crowding and molar inclination) and extraoral (surface material and ambient light) conditions on the efficacy and efficiency of intraoral scanning. (2) Methods: In a controlled in vitro experimental study, the samples were divided into six groups showing two types of intraoral conditions—lower incisor crowding (groups 1–3) and lower molar mesial tipping (groups 4–6). Each modified model was replicated using three types of materials with different light-absorption properties (n = 18 models). Each sample was scanned 30 t

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Shenoy, Amrutha, Subhabrata Maiti, Deepak Nallaswamy, and Varun Keskar. "An in vitro comparison of the marginal fit of provisional crowns using the virtual tooth preparation workflow against the traditional technique." Journal of Indian Prosthodontic Society 23, no. 4 (2023): 391–97. http://dx.doi.org/10.4103/jips.jips_273_23.

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Aim: This study investigates the effectiveness of an innovative virtual tooth preparation workflow for the fabrication of dental crowns using cone-beam computed tomography (CBCT) and intraoral scanners (IOSs) with conventional workflow using extraoral/laboratory scanners. Settings and Design: This in vitro experimental study was conducted in the laboratory of a university in Chennai, India. The dental laboratory and research facilities at the institution were utilized for the fabrication of the temporary crowns and the data acquisition process. Materials and Methods: Institutional approval was

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Flügge, Tabea V., Stefan Schlager, Katja Nelson, Susanne Nahles, and Marc C. Metzger. "Precision of intraoral digital dental impressions with iTero and extraoral digitization with the iTero and a model scanner." American Journal of Orthodontics and Dentofacial Orthopedics 144, no. 3 (2013): 471–78. http://dx.doi.org/10.1016/j.ajodo.2013.04.017.

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Elhaddad, Esraa Esmeail H., Mohamed M. A. Mohsen, and Dina Ezz Eldin Mohamed. "Clinical performance and wear resistance of milled resin composite material versus direct nanohybrid bulk-fill resin composite in the restoration of endodontically treated posterior teeth over 1 year: Randomized clinical trial." Journal of Conservative Dentistry and Endodontics 27, no. 4 (2024): 400–407. http://dx.doi.org/10.4103/jcde.jcde_46_24.

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Abstract Context: The restorative complexities associated with endodontically treated teeth surpass those encountered with vital ones. The field of adhesive dentistry experienced a significant advancement that led to a shift in treatment approach toward bonded restorations. Aim: The aim of the study was to assess the clinical performance of using indirect Milled composite or direct bulk-fill resin composite restorations for endo-treated teeth, as well as to measure the amount of wear on the occlusal tables of both restorations using a digital scanner. Subjects and Methods: Participants were di

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International, Journal of Medical Science and Innovative Research (IJMSIR). "Awareness about The Knowlegde of Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) Technologies among The Dental Professions – A Survey." International Journal of Medical Science and Innovative Research (IJMSIR) 9, no. 4 (2024): 174–84. https://doi.org/10.5281/zenodo.15422782.

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<strong>Abstract</strong> Computer-aided design (CAD) and computer-aided manufacturing (CAM) have become an increasingly popular part of dentistry over the past 25 years. Computer-aided design (CAD) and computer-aided manufacturing (CAM) have been applied in implant dentistry for the design and fabrication of prosthetic frameworks and prosthetic abutments, smile designing, intraoral scanner, and many more. To take certain steps regarding increase awareness among dentist, this study aimed to evaluate the awareness in dentist’s professions about CAD-CAM systems technologies. We randomly se

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Çin, Vahap, Ayça Deniz İzgi, Ediz Kale, and Burak Yilmaz. "Marginal and Internal Fit of Monolithic Zirconia Crowns Fabricated by Using Two Different CAD-CAM Workflows: An In Vitro Study." Prosthesis 5, no. 1 (2023): 35–47. http://dx.doi.org/10.3390/prosthesis5010003.

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Objectives: Few studies have evaluated the marginal fit of computer-aided design—computer-aided manufacturing (CAD-CAM) monolithic zirconia crowns fabricated through completely digital workflow; however, the internal fit of these restorations is not well known. The purpose of this in vitro study was to evaluate the marginal and internal fit of monolithic zirconia crowns fabricated by using digital workflow, including intraoral scanner (IOS) scans, and compare the results to those of a semi-digital workflow, which combined conventional impressions, poured casts, and extraoral scanner (EOS) scan

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Meshni, Abdullah A., Saurabh Jain, Hanan Nasser Marie Osaysi, Khadijah Nasser Hezam, and Samar Samir Gomaan Adlan. "The Comparison of Accuracy of Post Space Digital Impressions Made by Three Different Intraoral Scanners: An In Vitro Study." Diagnostics 14, no. 24 (2024): 2893. https://doi.org/10.3390/diagnostics14242893.

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Background and Objectives: The present study aims to assess and compare the accuracy of post-space impressions captured by three different intraoral scanners (IOS) using various canal diameters. Methods: Three extracted natural maxillary central incisors were selected and prepared for a 1 mm wide margin and a 3 mm ferrule. All steps required for the endodontic procedure were performed, and the post space was prepared using post drills. The post length was kept constant at 12 mm, whereas the width was varied (Group 1: 1.4 mm, Group 2: 1.6 mm, and Group 3: 1.8 mm). Three IOSs (Trios3, iTero2, an

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Ceylan, Gülsüm, and Faruk Emir. "Evaluating the accuracy of CAD/CAM optimized stones compared to conventional type IV stones." PLOS ONE 18, no. 3 (2023): e0282509. http://dx.doi.org/10.1371/journal.pone.0282509.

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This study compared the accuracy (trueness and precision) of stone models fabricated using two brands of CAD/CAM optimized stones Cerec Stone (BC) and Elite Master (EM), and a conventional type IV stone Elite Rock Fast (ERF). 30 conventional Type IV and scannable stone complete-arch models were scanned with a blue LED extraoral scanner, and root mean square values were obtained. 6 abutments were used in complete-arch models. The digital models were compared with the master model to evaluate their trueness using model superimposition with Geomagic software. Precision was determined for each cas

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Vyas, Vaidehi V., Rashmi Gubbi, Dharmesh G. Vasavada, Yashrajsingh R. Rathod, and Mehul Ojha. "Evaluation of palatal rugae pattern for gender determination and personal identification by comparing simulated antemortem and post mortem records in edentulous patients using a digital method." Journal of Oral and Maxillofacial Pathology 29, no. 2 (2025): 293–300. https://doi.org/10.4103/jomfp.jomfp_212_24.

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Abstract Background: Palatal rugoscopy offers a potential solution for identifying victims with severely damaged remains. Unlike teeth, rugae remain stable, even in extreme conditions. This study focuses on edentulous individuals, a previously unexplored area, to assess the potential of digital rugae analysis for personal identification and gender determination. Materials and methods: This study involved 138 edentulous patients seeking dentures. Maxillary casts were created from both intraoral impressions (Set A) which simulated ante mortem record and denture tissue surfaces (Set B) which simu

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Agus, Dahlan, and Melinda Iradani Putri. "Custom made orbital prosthesis using digital approach: A case report." World Journal of Advanced Research and Reviews 23, no. 1 (2024): 997–1001. https://doi.org/10.5281/zenodo.14792840.

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Factors that affect a person's quality of life can be influenced by aesthetics. In the case of involving orbits, it is a big problem in aesthetic factors and must be done immediately so as not to affect the quality of life of a person. A 76-year-old male patient came to the prosthodontic dental and oral hospital on a referral from an ophthalmologist to have an eye prosthesis because he wanted to improve his appearance. The patient wants to have an eye prosthesis immediately because of embarrassment. The creation of an eye prosthesis by printing with extraoral scans and orbital contour design i

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Oh, Kyung Chul, and Ji-Man Park. "Use of an Extraoral Transfer Jig and a Handheld Face Scanner App for Integrating Face Scan Data into Prosthesis Design." Korean Academy of Oral and Maxillofacial Implantology 23, no. 2 (2019): 106–10. http://dx.doi.org/10.32542/implantology.2019009.

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Aretxabaleta, Maite, Ariadne Roehler, Christian F. Poets, Alexander B. Xepapadeas, Bernd Koos, and Christina Weise. "Automation of Measurements for Personalized Medical Appliances by Means of CAD Software—Application in Robin Sequence Orthodontic Appliances." Bioengineering 9, no. 12 (2022): 773. http://dx.doi.org/10.3390/bioengineering9120773.

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Measuring the dimensions of personalized devices can provide relevant information for the production of future such devices used in various medical specialties. Difficulties with standardizing such measurement and obtaining high accuracy, alongside cost-intensive measuring methodologies, has dampened interest in this practice. This study presents a methodology for automatized measurements of personalized medical appliances of variable shape, in this case an orthodontic appliance known as Tübingen Palatal Plate (TPP). Parameters such as length, width and angle could help to standardize and impr

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Sezer, Taygun, Emir Esim, and Erkan Yilmaz. "Accuracy of an intraoral scanner that uses optical triangulation and confocal microscopy technology for full-arch digital implant impression: in vivo and in vitro evaluation." Selcuk Dental Journal 12, no. 1 (2025): 93–98. https://doi.org/10.15311/selcukdentj.1524111.

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Background: The purpose of this study was to analyse the accuracy of the full-arch digital implant impressions under both in vivo and in vitro conditions. Methods: A provisional prosthesis was fabricated for a patient with four implants placed in the edentulous maxilla. The master model was obtained using provisional prostheses. Both intraoral scans (IOS group) and extraoral scans (EIOS group) of the master model were performed using an intraoral scanner. The accuracy of the IOS and EIOS groups was calculated for three distances and three angles between the scan bodies (A-B, A-C, and A-D), as

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Cattoni, F., F. Mastrangelo, E. F. Gherlone, and G. Gastaldi. "A New Total Digital Smile Planning Technique (3D-DSP) to Fabricate CAD-CAM Mockups for Esthetic Crowns and Veneers." International Journal of Dentistry 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/6282587.

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Purpose.Recently, the request of patients is changed in terms of not only esthetic but also previsualization therapy planning. The aim of this study is to evaluate a new 3D-CAD-CAM digital planning technique that uses a total digital smile process.Materials and Methods.Study participants included 28 adult dental patients, aged 19 to 53 years, with no oral, periodontal, or systemic diseases. For each patient, 3 intra- and extraoral pictures and intraoral digital impressions were taken. The digital images improved from the 2D Digital Smile System software and the scanner stereolithographic (STL)

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Mertsöz, Burak, Salim Ongun, and Mutahhar Ulusoy. "In-Vitro Investigation of Marginal Adaptation and Fracture Resistance of Resin Matrix Ceramic Endo-Crown Restorations." Materials 16, no. 5 (2023): 2059. http://dx.doi.org/10.3390/ma16052059.

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The aim of this study was to evaluate the fracture resistance and marginal adaptation of endo-crown restorations produced from different resin-matrix ceramics (RMS) and the effects of these materials on marginal adaptation and fracture resistance. Three frasaco models were used by preparing (first) premolar teeth in three different margin preparations: butt-joint, heavy chamfer and shoulder. Each group was further divided into four subgroups according to the type of restorative material used: Ambarino High Class (AHC), Voco Grandio (VG), Brilliant Crios (BC) and Shofu (S) (n = 30). Master mode

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Emara, Nermine Fayez, Safaa E. Asal, and Tamer M. N. Mostafa. "Comparative study of conventional and digital implant impression techniques with different implant angulations (in-vitro study)." Tanta Dental Journal 22, no. 1 (2025): 8–14. https://doi.org/10.4103/tdj.tdj_10_24.

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Abstract Purpose Comparing cast accuracy of unsplinted open tray implant impression technique to digital impressions at different implant angulations using two measurement methods [Coordinate Measuring Machine (CMM) and Geomagic software]. Materials and methods Two mandibular completely edentulous epoxy resin models (A and B) representing a clinical scenario: model A four implant analogs parallel to each other, two at the canine region and two at the first molar region, and model B four implant analogs with different angulation; two at the canine region with 15º angles, and two at the first mo

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Corte-Real, Ana, Rita Ribeiro, Pedro Armelim Almiro, and Tiago Nunes. "Digital Orofacial Identification Technologies in Real-World Scenarios." Applied Sciences 14, no. 13 (2024): 5892. http://dx.doi.org/10.3390/app14135892.

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Three-dimensional technology using personal data records has been explored for human identification. The present study aimed to explore two methodologies, photography and orofacial scanning, for assessing orofacial records in forensic scenarios, highlighting their impact on human identification. A pilot and quasi-experimental study was performed using Canon 5D-Full Frame equipment (Tokyo, Japan) and an i700 scanner (Medit, Lusobionic, Portugal) (Seoul, Republic of Korea) with Medit Scan for Clinics (MSC) and Smile Design software (V3.3.2). The sample included living patients (n = 10) and indiv

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Ribeiro, Paulo, Mariano Herrero-Climent, Carmen Díaz-Castro, et al. "Accuracy of Implant Casts Generated with Conventional and Digital Impressions—An In Vitro Study." International Journal of Environmental Research and Public Health 15, no. 8 (2018): 1599. http://dx.doi.org/10.3390/ijerph15081599.

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Purpose: The aim of this study was to compare the accuracy of digital dental impressions with the accuracy of impressions obtained via conventional techniques. Methods: Two different master models were created, one with parallel implants (model 1) and the other with non-parallel implants (model 2). These reference master models included 4 Klockner KL RP implants (Klockner Implant System SA, Barcelona, Spain), which were juxta-placed and equidistant in the intermentoneal region. In model 1 the implants were placed parallel to each other, whereas in model 2 the implants were placed such that the

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