Comparison of the dimensional accuracy of a combined reversible/irreversible hydrocolloid impression system with other commonly used impression materials

1984 ◽  
Vol 52 (6) ◽  
pp. 795-799 ◽  
Author(s):  
H.W. Herring ◽  
M.A. Tames ◽  
L.D. Zardiackas
Keyword(s):  
Dimensional Accuracy ◽  
Impression Materials ◽  
Irreversible Hydrocolloid

scholarly journals Implant Impression Making: Take-Off Guide for Beginners

2021 ◽  
Author(s):  
Aaina Dhanda ◽  
Tarun Kalra ◽  
Manjit Kumar ◽  
Ajay Bansal ◽  
Ruchi Sharma
Keyword(s):  
Computer Aided Design ◽  
Dimensional Accuracy ◽  
Computer Assisted ◽  
Impression Materials ◽  
Starting Point ◽  
Irreversible Hydrocolloid ◽  
Passive Fit ◽  
Edentulous Patients ◽  
Aided Design ◽  
Relationship Of

AbstractDental implants are fixtures that constitute for the replacements of the root of a missing natural tooth. Dental implant therapy has been widely used for the restoration of partially and fully edentulous patients. The implant literature emphasizes the importance of a passively fitting prosthesis to prevent prosthodontic complications or even loss of fixture integration. Failure to achieve a passively fitting prosthesis and force tightening of superstructure may result in complications such as abutment, framework, and gold screw loosening or fracture. Various materials that can be used for making an implant impression are polyether, polyvinylsiloxane, condensation silicone, polysulfide, irreversible hydrocolloid material, and various others. There are various studies in relation to the accuracy of these impression materials out of which various scientists concluded different results with most studies stating polyether with the maximum amount of dimensional accuracy in comparison to other materials. An accurate implant impression plays a significant role and serves as a starting point in the process of producing good working casts. Thus, the accuracy of impression techniques becomes a significant issue in consideration of passive fit. Reproduction of intraoral relationship of implants through impression procedures is the first step in achieving accurate fit prosthesis. This transference is still complicated by the number, angulation, depth, and position of implants. The advent of computer-aided design/computer-assisted manufacturing technology improved the framework fabrication procedures and has increased the precision of fit of implant prosthesis.

Effect of disinfection of irreversible hydrocolloid impression materials with 1% sodium hypochlorite on surface roughness and dimensional accuracy of dental stone casts

2014 ◽  
Vol 3 (2) ◽  
pp. 113 ◽  
Author(s):  
JoãoMaurício Ferraz da Silva ◽  
EduardoShigueyuki Uemura ◽  
Eron ToshioColauto Yamamoto ◽  
AlexandreLuizSouto Borges ◽  
AndressaRodrigues Dorner ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Sodium Hypochlorite ◽  
Dimensional Accuracy ◽  
Impression Materials ◽  
Irreversible Hydrocolloid

scholarly journals A Promising Potential of Brown Algae Sargassum polycystum as Irreversible Hydrocolloid Impression Material

Marine Drugs ◽  
2022 ◽  
Vol 20 (1) ◽  
pp. 55
Author(s):  
Nurlindah Hamrun ◽  
Bahruddin Talib ◽  
Muhammad Ruslin ◽  
Hasminar Pangeran ◽  
Mochammad Hatta ◽  
...  
Keyword(s):  
Dimensional Stability ◽  
Brown Algae ◽  
Dimensional Accuracy ◽  
Impression Material ◽  
Sargassum Polycystum ◽  
Impression Materials ◽  
Measurement Results ◽  
Irreversible Hydrocolloid ◽  
Dental Cast ◽  
Digital Caliper

This study aimed to investigate the potential use of brown algae Sargassum polycystum as irreversible hydrocolloid (alginate) impression material. Potassium alginate extracted from Sargassum polycystum was prepared in three different compositions (14%, 15%, and 16%) and mixed with other standard components to form an alginate impression material. Prior to that, the purity of potassium alginate was quantified with Fourier Transform Infrared Spectroscopy (FTIR) analysis. As a control material, the alginate impression material from a commercially available product was used. All alginate impression materials were then applied to a die stone model. Dimensional accuracy was measured by calculating the mesiodistal width of incisors in the generated dental cast using a digital caliper 0.01 accuracy (five replications). In addition, to evaluate the dimensional stability, the impression results were poured at four different periods (immediately, 5 min, 10 min, and 15 min). An independent t-test was performed to compare the measurement results with p < 0.05 considered significant. Analytical results confirm that the impression material containing 15% potassium alginate gives the best dimensional accuracy similar to control (p > 0.05). Meanwhile, the optimal dimensional stability was produced in the impression material containing 16% potassium alginate. Our study suggested that brown algae Sargassum polycystum has a promising potential to be used as an alginate impression material in clinical application.

Dimensional accuracy of combined reversible and irreversible hydrocolloid impression materials

1988 ◽  
Vol 59 (4) ◽  
pp. 404-409 ◽  
Author(s):  
M.L. Supowitz ◽  
R.J. Schnell ◽  
R.W. Dykema ◽  
C.J. Goodacre
Keyword(s):  
Dimensional Accuracy ◽  
Impression Materials ◽  
Irreversible Hydrocolloid

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

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.

scholarly journals Evaluation and Comparison of Dimensional Accuracy of Newly Introduced Elastomeric Impression Material using 3D Laser Scanners: An in vitro Study

2013 ◽  
Vol 14 (2) ◽  
pp. 265-268 ◽  
Author(s):  
Naveen S Yadav ◽  
Teerthesh Jain ◽  
Amrita Pandita ◽  
SMA Feroz ◽  
Pradeep LNU ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Laser Scanner ◽  
In Vitro Study ◽  
Dimensional Accuracy ◽  
Time Intervals ◽  
Impression Material ◽  
Impression Materials ◽  
Laser Scanners ◽  
Master Model

ABSTRACT Aim Aim of the present study was to comparatively evaluate dimensional accuracy of newely introduced elastomeric impression material after repeated pours at different time intervals. Materials and methods In the present study a total of 20 (10 + 10) impressions of master model were made from vinyl polyether silicone and vinyl polysiloxane impression material. Each impression was repeatedly poured at 1, 24 hours and 14 days. Therefore, a total of 60 casts were obtained. Casts obtained were scanned with three-dimensional (3D) laser scanner and measurements were done. Results Vinyl polyether silicone produced overall undersized dies, with greatest change being 0.14% only after 14 days. Vinyl polysiloxane produced smaller dies after 1 and 24 hours and larger dies after 14 days, differing from master model by only 0.07% for the smallest die and to 0.02% for the largest die. Conclusion All the deviations measured from the master model with both the impression materials were within a clinically acceptable range. Clinical significance In a typical fixed prosthodontic treatment accuracy of prosthesis is critical as it determines the success, failure and the prognosis of treatment including abutments. This is mainly dependent upon fit of prosthesis which in turn is dependent on dimensional accuracy of dies, poured from elastomeric impressions. How to cite this article Pandita A, Jain T, Yadav NS, Feroz SMA, Pradeep, Diwedi A. Evaluation and Comparison of Dimensional Accuracy of Newly Introduced Elastomeric Impression Material using 3D Laser Scanners: An in vitro Study. J Contemp Dent Pract 2013;14(2):265-268.

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