A Comparative Study of the Accuracy of Dies Made from Digital Intraoral Scanning vs. Elastic Impressions: An In Vitro Study

Serag, Mahmoud; Nassar, Talal al; Avondoglio, Dane; Weiner, Saul

doi:10.1111/jopr.12481

Cited by 24 publications

(18 citation statements)

References 21 publications

(45 reference statements)

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“…Yet, recent studies confirm that models obtained from a digital intra-oral scanning have a dimensional accuracy equivalent to that of plaster stone casts models obtained after traditional impressions (M. Serag et al, 2018) [12] and that intraoral scanners have an equally or higher accuracy and precision than conventional impressions, and these can be used when restoring up to ten units, without extended edentulous spans (R. Nedelcu et al, 2018) [13].…”

Section: Resultsmentioning

confidence: 90%

“…On the other hand, most of the recent studies conclude that intraoral scanning provides higher precision and trueness when compared to the conventional impression or to extraoral scanning [12,13,22,23]. It was also shown that the new generations of printers produce clinically acceptable models that represent a good, viable option for clinical applications [24,25].…”

Section: Resultsmentioning

confidence: 99%

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3D Printed Dental Models A comparative analysis

Țâncu¹,

Pantea²,

Totan³

et al. 2019

Mat.Plast.

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The aim of this study is to compare two different methods used for obtaining printed dental models -intraoral scanning and extraoral scanning; the comparative analysis was made in correlation to the accuracy of the traditional plaster cast model. Nine dental models were obtained: three plaster cast ones, three printed after intraoral scanning and there printed after impression scanning. A total of 137 measurements (arch and tooth measurements) were done on the three types of models and a statistical evaluation was performed (t-test, Fisher Test). Our results highlighted that 3D printed dental models represent a reliable option for clinical application.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

3D Printed Dental Models A comparative analysis

Țâncu¹,

Pantea²,

Totan³

et al. 2019

Mat.Plast.

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“…Ender et al (2019) [19], specifies that: "certain current IOS devices are well within the required accuracy required for full-arch scansˮ and -corresponding to partial-arch impressions -"IO scanninig represents a suitable alternative to conventional impression methodsˮ. The intraoral scanning is described by many authors as being able to provide greater accuracy of dental models, compared to the laboratory (extraoral) scanning or to the conventional method of obtaining dental models, represented by conventional oral impression [20,21,22,14]. Sason et al (2018) [20] presented an in vivo study performed on 10 clinically healthy patients, aged 18-45, highlighting that the intraoral scanner offers greater accuracy (precision and trueness) than the extraoral scanner.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study on Two Methods Used in Obtaining 3D Printed Dental Models

Pantea¹,

Ciocoiu²,

Țâncu³

et al. 2019

Mat.Plast.

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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 reference dental model. The 3D printed models obtained were scanned with the industrial scanner, resulting in other two STL files (coded M2, respectively M3). All the STL files obtained (reference M1; M2; M3) were compared in pairs, using a 3D analysis software. Good results were achieved in obtaining 3D printed dental models via IO or EO scanning, yet, the 3D printed dental model obtained via IO scanning (M3) showed slightly improved dimensional compatibility with the reference model (M1) in comparison with the 3D printed dental model manufactured via EO scanning (M2).

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“…Deste modo, as chances de alterações interproximais causadas pela serra do troquel diminuem 5,14 . Várias etapas laboratoriais podem ser eliminadas, como: o vazamento do gesso nas moldagens, a confecção das réplicas, a colocação dos pinos nos modelos além de não necessitar recortar e modelar troqueis 2,15,16 . O registro oclusal também é realizado durante o escaneamento, e os modelos são impressos com guia de articulação 16,17 .…”

Section: Ciência Pluralunclassified

“…Alguns estudos já evidenciam que o escaneamento intra oral apresenta boa capacidade de cópia dos preparos 5,6,12,16,17,18 . Sendo o objetivo do presente artigo, relatar em um caso clínico a confecção de nove laminados cerâmicos em que foi empregado escaneamento intra oral e confecção dos modelos em impressora 3D.…”

Section: Ciência Pluralunclassified

Escaneamento Digital E Prototipagem 3d Para Confecção De Laminados Cerâmicos: Relato De Caso Clínico

Espíndola-Castro¹,

Ortigoza²,

Monteiro³

2019

REV. CIÊNC. PLURAL

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ciência pluralRevista Ciência Plural. 2019; 5(1):113-123 114 RESUMO Introdução: lentes de contato dentais podem ser uma excelente opção para correção de cor, forma, tamanho e posicionamento dental. Entretanto é um tratamento que requer várias etapas laboratoriais com riscos de distorções nas etapas de moldagem e vazamento do modelo. Desta forma, desadaptações dos laminados em boca podem ser frequentes. Objetivo: relatar um caso clínico de nove laminados cerâmicos em que foi empregado o escaneamento digital, troquelização virtual e prototipagem do modelo em 3D. Método: paciente do gênero feminino, 59 anos, buscou atendimento odontológico queixando-se de desproporcionalidade dentária ao sorrir. Ao exame clínico foi observada uma inclinação maxilar que causava aquela desarmonia. Foi proposta a confecção de laminados cerâmicos para compensar a discrepância óssea bem como melhorar forma, contorno e cromia dentária. Após planejamento digital, confecção do enceramento diagnóstico, mock up, e aceita do planejamento por parte da paciente, iniciaram-se os preparos dentários. Finalizada esta etapa, os dentes foram escaneados (Trios 3Shape), troquelizados e prototipados em impressora 3D. O modelo foi encaminhado ao laboratório que confeccionou as peças protéticas em dissilicato de lítio de forma injetada e maquiada. Por fim, foram realizadas as provas secas, úmidas, ajustes necessários e cimentação dos laminados com cimento resinoso fotopolimerizável. Conclusão: a tecnologia empregada se mostrou eficiente na resolução do caso, sendo uma técnica rápida, que causou pouco desconforto à paciente e oportunizou uma boa adaptação dos laminados cerâmicos. ABSTRACTIntroduction: laminates veneers can be an excellent choice for color correction, shape, size and dental positioning. However, it is a technique that requires several laboratory steps with risks of distortion in the molding and casting steps of the model. Thus, maladjustments of laminates in the mouth may be frequent. Objective: to report a clinical case of nine ceramic laminates through the digital scanning, virtual punching and 3D prototyping of the model. Methods: A 59 years old woman showed up to dental clinic searched dental care complaining of dental disproportionality when smiling. At the clinical examination, a maxillary inclination was observed that caused disharmony. It was proposed the making of ceramic laminates to compensate the bone discrepancy as well as improve shape, contour and dental color. After the digital planning, preparation diagnostic wax-up, mock up, and acceptance of patient planning, the dental preparations were started. After this step, the teeth were scanned (Trios 3Shape), punched and prototyped in a 3D printer. The model was sent to the laboratory to do the prosthetic parts in lithium disilicate in an injected and makeup manner. At last, it were made the tests dry, wet, required adjustments finally cementation of the ceramic laminates with photopolymerizable resin cement. Conclusions: the technology employed was efficient in solving this case,...

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A Comparative Study of the Accuracy of Dies Made from Digital Intraoral Scanning vs. Elastic Impressions: An In Vitro Study

Abstract: PVS/Die and iTero groups offered superior reproduction of the master die in terms of dimensional accuracy, but these differences are likely of little clinical significance.

Cited by 24 publications

References 21 publications

3D Printed Dental Models A comparative analysis

3D Printed Dental Models A comparative analysis

Comparative Study on Two Methods Used in Obtaining 3D Printed Dental Models

Escaneamento Digital E Prototipagem 3d Para Confecção De Laminados Cerâmicos: Relato De Caso Clínico

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