Digital Device in Postextraction Implantology: A Clinical Case Presentation

Aim. The aim of this work is to describe a case of immediate implant placement after extraction of the upper right first premolar, with the use of CAD/CAM technology, which allows an early digital impression of the implant site with an intraoral scanner (MHT 3D Progress, Verona, Italy).Case Report. A 46-year-old female was referred with a disorder caused by continuous debonding of the prosthetic crown on the upper right first premolar. Clinically, there were no signs, and the evaluation of the periapical radiograph showed a fracture of the root, with a mesial well-defined lesion of the hard tissue of the upper right first premolar, as the radiolucent area affected the root surface of the tooth. It was decided, in accordance with the patient, that the tooth would be extracted and the implant (Primer, Edierre implant system, Genoa, Italy) with diameter of 4.2 mm and length of 13 mm would be inserted. After the insertion of the implant, it was screwed to the scan abutment, and a scan was taken using an intraoral scanner (MHT 3D Progress, Verona, Italy). The scanned images were processed with CAD/CAM software (Exocad DentalCAD, Darmstadt, Germany) and the temporary crown was digitally drawn (Dental Knowledge, Milan, Italy) and then sent to the milling machine for production with a composite monoblock. After 4 months, when the implant was osteointegrated, it was not necessary to take another dental impression, and the definitive crown could be screwed in.Conclusion. The CAD/CAM technology is especially helpful in postextraction implant for aesthetic rehabilitation, as it is possible to immediately fix a provisional crown with an anatomic shape that allows an optimal healing process of the tissues. Moreover, the removal of healing abutments, and the use of impression copings, impression materials, and dental stone became unnecessary, enabling the reduction of the chair time, component cost, and patient’s discomfort. However, it is still necessary for scientific research to continue to carry out studies on this procedure, in order to improve the accuracy, the reliability, and the reproducibility of the results.

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Comparison of Direct and Indirect Scanners in Digital Impression Systems: A Narrative Review

Journal of Isfahan Dental School ◽

10.18502/ijds.v17i2.6885 ◽

2021 ◽

Author(s):

Mahsa Abbasi ◽

Behnaz Ebadian ◽

Negin Aminianpour

Keyword(s):

Clinical Studies ◽

Dimensional Accuracy ◽

Clinical Results ◽

Digital Impression ◽

Lower Amount ◽

Intraoral Scanner ◽

Marginal Gap ◽

Accuracy Rate ◽

Impression Materials ◽

Internal Gap

Introduction: Digital impression tools are an alternative to old impression materials and have developed significantly in recent years. These systems generally include two types of scanners: direct and indirect scanners. This article aimed to review and compare these two types of scanners. Description: Data were collected by reviewing a total of forty articles on dimensional accuracy, a combination of scans, and internal and marginal gaps for comparison of direct and indirect scanners. These articles were retrieved from PubMed and Scopus and published between 2010 and 2020 using the following keywords: intraoral scanner, lab scanner, marginal gap, internal gap, and accuracy rate. Results: Direct scanners had a lower amount of marginal and internal gaps, while indirect scanners had a lower deviation in more prepared teeth in the half and full arch due to the ability of stitching scans. Regarding the dimensional accuracy, the results of studies were inconsistent, but clinical studies pointed to the superiority of indirect scanners. The type of scanner suggested being selected depending on conditions such as the size of area, time, convenience of procedure, etc. The clinical results of both types of scanners were clinically acceptable.

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3D Digital Impression Systems Compared with Traditional Techniques in Dentistry: A Recent Data Systematic Review

Materials ◽

10.3390/ma13081982 ◽

2020 ◽

Vol 13 (8) ◽

pp. 1982 ◽

Cited By ~ 4

Author(s):

Marco Cicciù ◽

Luca Fiorillo ◽

Cesare D’Amico ◽

Dario Gambino ◽

Emanuele Mario Amantia ◽

...

Keyword(s):

New Technologies ◽

Digital Impression ◽

New Device ◽

Advantages And Disadvantages ◽

Impression Technique ◽

Impression Materials ◽

Key Factor ◽

Dental Impression ◽

Digital Or

The advent of new technologies in the field of medicine and dentistry is giving improvements that lead the clinicians to have materials and procedures able to improve patients’ quality of life. In dentistry, the last digital techniques offer a fully digital computerized workflow that does not include the standard multiple traditional phases. The purpose of this study is to evaluate all clinical trials and clinical randomized trials related to the digital or dental impression technique in prosthetic dentistry trying to give the readers global information about advantages and disadvantages of each procedure. Data collection was conducted in the main scientific search engines, including articles from the last 10 years, in order to obtain results that do not concern obsolete impression techniques. Elsevier, Pubmed and Embase have been screened as sources for performing the research. The results data demonstrated how the working time appears to be improved with digital workflow, but without a significant result (P = 0.72596). The papers have been selected following the Population Intervention Comparison Outcome (PICO) question, which is related to the progress on dental impression materials and technique. The comparison between dentists or practitioners with respect to classic impression procedures, and students open to new device and digital techniques seem to be the key factor on the final impression technique choice. Surely, digital techniques will end up supplanting the analogical ones altogether, improving the quality of oral rehabilitations, the economics of dental practice and also the perception by our patients.

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Effect of different impression methods and ceramic materials on adaptation of inlays

Brazilian Dental Science ◽

10.14295/bds.2018.v21i3.1543 ◽

2018 ◽

Vol 21 (3) ◽

pp. 296

Author(s):

Marília Pivetta Rippe ◽

Elen Guerra ◽

Arianne Vallim Pinto Coelho ◽

Lilian Costa Anami ◽

Renata Marques de Melo Marinho ◽

...

Keyword(s):

Lithium Disilicate ◽

Ceramic Materials ◽

Digital Impression ◽

Marginal Adaptation ◽

Digital Impressions ◽

Cad Cam ◽

Ceramic Blocks ◽

Dental Impression ◽

Internal Adaptation ◽

Ceramic Inlay

Objective: The aim of this study was to evaluate the internal and marginal adaptation of inlays fabricated from different types of impressions (conventional and digital) and different ceramics (feldspathic and lithium disilicate). Material and Methods: Forty premolars were prepared for all-ceramic inlay restoration and assigned to 4 groups (n=10), according to the impression method (conventional with addition silicone and digital impressions) and ceramic type (lithium disilicate and feldspathic ceramic blocks). For each type of impression, 10 inlays were fabricated from lithium disilicate blocks and the other 10 from feldspathic ceramic blocks, by means of the CAD-CAM system. The internal adaptation was analyzed by replica. The marginal fit was analyzed under a stereomicroscope by directly measuring the gap formed between the inlay and the tooth in the proximal and occlusal regions. Results: The marginal or internal adaptations were not affected by type of impression (conventional = digital impression), irrespective of the ceramic type. Only the internal adaptation was affected by material, i.e., feldspathic ceramic had lower values than disilicate ceramic, when considering the digital impression. Conclusion: The conventional and digital impressions promote similar marginal and internal adaptation of tested feldspathic and disilicate ceramic inlays. For digital impression the feldspathic ceramic showed better internal adaptation than lithium disilicate. KeywordsCeramics; Dental internal adaptation; Dental marginal adaptation; Dental impression technique.

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Digital Impression

City Dental College Journal ◽

10.3329/cdcj.v9i2.12321 ◽

2012 ◽

Vol 9 (2) ◽

pp. 31-34 ◽

Cited By ~ 1

Author(s):

Aleya Begum ◽

Rubaba Ahmed ◽

Md Saiful Islam

Keyword(s):

Mechanical Properties ◽

Physical And Mechanical Properties ◽

Digital Impression ◽

Digital Dentistry ◽

Impression Material ◽

Recent Advances ◽

Impression Materials ◽

Dental Impression

The use of different impression materials is in vogue for last few years with a view of capturing more accurate dental impression, which in turn produces more accurate fitting restoration. For achieving this goal, one should have ample knowledge about the different physical and mechanical properties, as well as in different techniques with the most recent advances. In this review, we highlighted the impression material and recent updates on Digital Dentistry with the benefits which can be gained from this system by both Clinician and Dentist. DOI: http://dx.doi.org/10.3329/cdcj.v9i2.12321 City Dental College J. Volume-9, Number-2, July-2012

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Deficiencies in Silicone Impression for Crowns and Bridges

Revista de Chimie ◽

10.37358/rc.17.10.5876 ◽

2017 ◽

Vol 68 (10) ◽

pp. 2317-2319

Author(s):

Claudia Florina Andreescu ◽

Oana Botoaca ◽

Horia Mihail Barbu ◽

Doina Lucia Ghergic ◽

Anamaria Bechir ◽

...

Keyword(s):

Dental Practice ◽

Present Study Deal ◽

Dental Crowns ◽

Impression Materials ◽

Dental Practitioners ◽

Adequate Quality ◽

Dental Impression ◽

Single Crowns

There are many steps in fabrication of dental crowns and bridges at which an error can occur, and a technician can only fabricate a quality restoration if the impression itself is of adequate quality. All dental practitioners should have the ability to evaluate the quality of dental impression before sending to the laboratory. Elastomeric silicones (polysiloxane) are the most utilised impression materials in dental practice. The present study deal with the deficiencies of silicones dental impressions sent to commercial dental laboratories for fabrication of single crowns and bridges.

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The use of vinyl polysiloxanes and quick setting epoxies in paleontology

Journal of Paleontology ◽

10.1017/s002233600001934x ◽

1989 ◽

Vol 63 (2) ◽

pp. 256-256 ◽

Cited By ~ 1

Author(s):

Patrick Leiggi

Keyword(s):

Fast Method ◽

Impression Material ◽

Impression Materials ◽

Dental Impression

Quick setting dental impression materials are nothing new in the paleontology laboratory. In a paleontological note published in the Journal of Paleontology on “The Use of Dental Impression Material For Molding Macrofossils” (Quilty & Williams, 1975), the products Xantopren and Optosil were introduced as a simple and fast method of obtaining precision molds in 1-3 minutes. Since the mid-1970's these products have been replaced by vinyl polysiloxanes.

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The Use of a CAD/CAM Surgical Obturator Without Impressions to Restore a Maxillectomy Defect

Craniomaxillofacial Trauma & Reconstruction Open ◽

10.1177/2472751221992972 ◽

2021 ◽

Vol 6 ◽

pp. 247275122199297

Author(s):

Nicholas Callahan ◽

Sarah L. Moles ◽

Michael R. Markiewicz

Keyword(s):

Surgical Planning ◽

Tumor Resection ◽

Free Tissue Transfer ◽

Digital Impression ◽

Head And Neck Reconstruction ◽

Autologous Reconstruction ◽

Form And Function ◽

Virtual Surgical Planning ◽

Tissue Transfer ◽

Cad Cam

Immediate obturation of the patient undergoing maxillectomy who is not undergoing formal autologous reconstruction is important for immediate form and function of the patient. Exophytic tumors, that are large in dimension can make pre-operative obturator formation challenging. Traditional methods of obturator fabrication involve a physical or digital impression. Preoperative virtual surgical planning for tumor resection and reconstruction using free tissue transfer has become a mainstay in head and neck reconstruction. We describe a variation of this for a patient unable to undergo free tissue transfer where the authors used preoperative virtual surgical planning and CAD/CAM technologies to perform tumor resection, and fabricated an obturator based on the CT imaging alone.

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