Dermal and mucosal reactions to an antimicrobial irreversible hydrocolloid impression material: A clinical report

2006 ◽  
Vol 95 (3) ◽  
pp. 190-193 ◽  
Author(s):  
Philip S. Baker ◽  
Kevin D. Plummer ◽  
Gregory R. Parr ◽  
M. Harry Parker
Keyword(s):  
Clinical Report ◽  
Impression Material ◽  
Irreversible Hydrocolloid

Sodium hypochlorite disinfection of irreversible hydrocolloid impression material

1992 ◽  
Vol 67 (5) ◽  
pp. 628-631 ◽  
Author(s):  
Frederick A. Rueggeberg ◽  
F. Eugene Beall ◽  
Michael T. Kelly ◽  
George S. Schuster
Keyword(s):  
Sodium Hypochlorite ◽  
Impression Material ◽  
Irreversible Hydrocolloid

scholarly journals A self-disinfecting irreversible hydrocolloid impression material mixed with povidone iodine powder

2016 ◽  
Vol 10 (04) ◽  
pp. 507-511 ◽  
Author(s):  
Hussien Abdalfatah Ismail ◽  
Hani Asfour ◽  
Souaad Abdulelah Shikho
Keyword(s):  
Dimensional Stability ◽  
Povidone Iodine ◽  
Antimicrobial Effect ◽  
Control Group ◽  
Impression Material ◽  
Irreversible Hydrocolloid ◽  
Weight Test ◽  
The Mean ◽  
And Staphylococcus Aureus ◽  
Stability Results

ABSTRACT Objectives: The aim was to evaluate the effect of adding povidone (PVP) iodine powder with different concentrations to irreversible hydrocolloid on both microbiological and dimensional stability. Materials and Methods: Regular set of (alginate) irreversible hydrocolloid was selected as control group. PVP-iodine powder was mixed with the alginate powder at concentrations of 1, 5, 10, 15, and 20% by weight (test groups). All specimens were tested for their antimicrobial effect against Streptococcus mutans and Staphylococcus aureus as well as dimensional stability. Results: The results of test groups showed that concentrations 1, 5, and 10, weight % had little effect against S. mutans and S. aureus microorganisms. While concentrations 15 and 20 weight % had demonstrated greater effect on microbial growth. The mean of dimensional stability in mm of modified alginate with PVP-iodine at 15 and 20 weight % was –0.119 ± 0.255 and –0.035 ± 0.074, respectively. While the mean dimensional stability in mm of unmodified alginate was –0.112 ± 0.176 . The results of dimensional stability showed that 15 and 20 concentrations of test groups adversely affect the dimensional stability. The adverse effect was noticed to be significant in concentration 20%, where as it was nonsignificant in 15% concentration. Conclusion: Modified alginate impression material with 15 weight % PVP-iodine powered give the material, a self-disinfected properties with less deteriorating effect on dimensional stability.

A Clinical Report on the Use of Closed-Tray, Hex-Lock-Friction-Fit Implant Impression Copings

2014 ◽  
Vol 40 (4) ◽  
pp. 449-453
Author(s):  
Eli Raviv ◽  
Jan Hanna ◽  
Roy Raviv ◽  
Mili Harel-Raviv
Keyword(s):  
Relevant Literature ◽  
Clinical Report ◽  
Impression Material ◽  
Impression Technique ◽  
Implant Dentistry ◽  
Clinical Cases

The precision of an impression determines the subsequent accuracy and fit of the final restoration. Therefore, the ultimate search is for the most accurate impression material and the most efficient and least time consuming technique. One of the major debates in implant dentistry has focused on the advantages of the pick-up versus the transfer impression technique. The pick-up technique is widely accepted as the more accurate. However, the conventional transfer technique is simpler and less time consuming. The Hex-Lock-Friction-Fit impression coping (AB Dental Devices) combines the advantages of the transfer impression technique and the pick-up impression technique. In this article we will review the relevant literature, discuss the advantages of this unique implant impression technique, and present some related clinical cases.

scholarly journals The Effects of Custom Tray Material on the Accuracy of Master Casts

2008 ◽  
Vol 9 (6) ◽  
pp. 49-56 ◽  
Author(s):  
Ramin Mosharraf ◽  
Sina Shafa ◽  
Zeinab Zaree
Keyword(s):  
Stainless Steel ◽  
Visible Light ◽  
Polymethyl Methacrylate ◽  
Impression Material ◽  
Significant Difference ◽  
Irreversible Hydrocolloid ◽  
Light Curing ◽  
Master Model ◽  
Visible Light Curing ◽  
Digital Caliper

Aim In addition to the impression material, the type of impression tray influences the accurate dimensional transfer of the size and position of the teeth to the master cast. The aim of this study was to determine the accuracy of master casts produced from an alginate impression material using a visible-light-curing resin and autopolymerizing polymethyl methacrylate resin custom tray materials. Methods and Materials Two types of custom trays were fabricated from a stainless steel master model with three index studs. Twenty-two irreversible hydrocolloid impressions were made of the master model and then poured with a Type III dental stone. The distances between the reproduced index studs were measured to +/- 0.01 mm with a digital caliper. A one-way analysis of variance (ANOVA) and T-test were used for data analysis. Results There were no significant differences between the two tray materials for any of the three distances. There were no statistical differences between the master model and the casts made from the two tray materials in the length dimension, but there were significant differences in the vertical dimension. In terms of the width dimension there was a significant difference only between the cold curing group and the master model. Conclusion Within the limitations of this study, the dimensions of stone casts poured from an impression made using a light-cured tray did not differ significantly from those created from impressions made using autopolymerizing acrylic trays. However, working dies from the light-curing tray impressions were more accurate buccolingually than those from the autopolymerizing acrylic trays. Clinical Significance The accuracy of master cast reproduction using visible-light-curing resin or an autopolymerizing polymethyl methacrylate resin custom tray material is acceptable. Although autopolymerizing resin materials require less equipment and are relatively more inexpensive, light-cure tray materials may be the material of choice for custom tray fabrication due to greater accuracy in the buccolingual dimension. Citation Shafa S, Zaree Z, Mosharraf R. The Effects of Custom Tray Material on the Accuracy of Master Casts. J Contemp Dent Pract 2008 September; (9)6:049-056.

Sign in / Sign up

Export Citation Format

Share Document