Appraisal of Dimensional Accuracy in Five Brands of Extended Pour Irreversible Hydrocolloid Materials for FDP Impression

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.

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

European Journal of General Dentistry ◽

10.4103/2278-9626.134835 ◽

2014 ◽

Vol 3 (2) ◽

pp. 113 ◽

Cited By ~ 1

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

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Disinfection procedures: their effect on the dimensional accuracy and surface quality of irreversible hydrocolloid impression materials and gypsum casts

Dental Materials ◽

10.1016/s0109-5641(01)00027-6 ◽

2002 ◽

Vol 18 (2) ◽

pp. 103-110 ◽

Cited By ~ 42

Author(s):

Rebecca L. Taylor ◽

Paul S. Wright ◽

Christopher Maryan

Keyword(s):

Surface Quality ◽

Dimensional Accuracy ◽

Impression Materials ◽

Irreversible Hydrocolloid

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

Marine Drugs ◽

10.3390/md20010055 ◽

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.

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A Self-Disinfecting Irreversible Hydrocolloid Impression Material Mixed with Chlorhexidine Solution

The Angle Orthodontist ◽

10.2319/070606-277 ◽

2007 ◽

Vol 77 (5) ◽

pp. 894-900 ◽

Cited By ~ 10

Author(s):

Jian Wang ◽

Qianbing Wan ◽

Yonglie Chao ◽

Yifan Chen

Keyword(s):

Antibacterial Effect ◽

Setting Time ◽

Three Dimensional ◽

Dimensional Accuracy ◽

Impression Material ◽

Tukey Test ◽

Accuracy Test ◽

Irreversible Hydrocolloid ◽

Inhibition Zones ◽

Chlorhexidine Solution

Abstract Objective: To examine the antibacterial effect and several physical properties of an irreversible hydrocolloid impression material mixed with chlorhexidine solution. Materials and Methods: The experimental irreversible hydrocolloid specimens were prepared and allocated into four groups (Group0.1 g/L, Group0.2 g/L, Group0.5 g/L, Group1.0 g/L) according to the concentrations of chlorhexidine solution used as the mixing liquid. Specimens mixed with distilled water served as a control. The antibacterial effect, three-dimensional accuracy, flowability, and setting time were tested. Statistical analysis was performed using a one-way analysis of variance and a Tukey test, which was used for multiple comparisons (α = .05). Results: Zones of growth inhibition were observed around the test specimens, but not around the control specimens, and there were significant intergroup differences in the diameters of the inhibition zones. In the accuracy test, no significant differences (P > .05) were detected among all the measurements for all groups, and the accuracy was clinically acceptable. Also, no significant differences in the flowability (P = .987) and setting time (P = .103) were detected. Conclusion: Chlorhexidine self-disinfecting irreversible hydrocolloid impression material can exhibit varying degrees of antibacterial activity without influencing the three-dimensional accuracy, flowability, and setting time.

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