Two- and three-dimensional accuracy of dental impression materials: Effects of storage time and moisture contamination

2010 ◽  
Vol 20 (5) ◽  
pp. 243-249 ◽  
Author(s):  
Deepa T. Chandran ◽  
Daryll C. Jagger ◽  
Robert G. Jagger ◽  
Michele E. Barbour
Keyword(s):  
Storage Time ◽  
Three Dimensional ◽  
Dimensional Accuracy ◽  
Impression Materials ◽  
Dental Impression

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.

Volumetric evaluation and three-dimensional accuracy of different elastomeric impression materials

Measurement ◽  
2018 ◽  
Vol 127 ◽  
pp. 436-442 ◽  
Author(s):  
Faruk Emir ◽  
Simel Ayyildiz ◽  
Bulent Piskin ◽  
Cumhur Sipahi
Keyword(s):  
Three Dimensional ◽  
Dimensional Accuracy ◽  
Impression Materials

scholarly journals Impression Materials and Storage Time Influence on Cast Models Accuracy

2013 ◽  
Vol 2 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Daniela Araújo Veloso Popoff ◽  
Fabiana Santos Gonçalves ◽  
Wallace de Freitas Oliveira ◽  
Luiza Anjos Soares ◽  
Hugo Lemes Carlo ◽  
...  
Keyword(s):  
Storage Time ◽  
Dimensional Accuracy ◽  
Biological Properties ◽  
Reference Points ◽  
Human Teeth ◽  
Type Iv ◽  
Fixed Prosthodontics ◽  
Impression Materials ◽  
Elastomeric Materials ◽  
And Storage

ABSTRACT Background There are a great amount of materials and techniques to use during dental prosthesis production that may confuse the dentist at the time of choice. Material's choice should be done considering ideal chemicophysical and biological properties and high detail reproduction. Aims The present study aimed to test the influence of differents impression materials and storage times on the dimensional accuracy of casting models. Materials and methods Four elastomeric materials– polysulfide, polyether, condensation silicone and addition silicone–were used to reproduce a master model of human teeth which were prepared for metaloceramic fixed prosthodontics. Six reference points were established on each tooth in order to determine four intervals: MD–mesial-distal, BL–buccal-lingual and CO–cervical-occlusal distance from premolar, and INT– interpillar distance–from the distal surface of the premolar to the mesial surface of the molar. The impressions were stored for half, 2 and 12 hours and pondered with a type IV gypsum. Results Cast measurements data were subjected to ANOVA (4 × 3), Tukey's – α = 0.05, Kruskal-Wallis and Dunn's tests – α = 0.05. The interaction between materials and storage time presented statistically significant for VP and CO intervals. For each storage time, materials presented dimensional alteration statistically significant. Conclusion Impression materials accuracy was affected by the storage time. All materials presented different dimensional accuracy when evaluated in a same period of time. Polysulfide was the only material that presented stable behavior over the time. How to cite this article Gonçalves FS, de Freitas Oliveira W, Soares LA, Carlo HL, da Mota AS, Popoff DAV, Soares CJ. Impression Materials and Storage Time Influence on Cast Models Accuracy. Int J Experiment Dent Sci 2013;2(1):18-23.

scholarly journals Performance of dental impression materials: Benchmarking of materials and techniques by three-dimensional analysis

2015 ◽  
Vol 34 (5) ◽  
pp. 572-584 ◽  
Author(s):  
Heike RUDOLPH ◽  
Michael R. S. GRAF ◽  
Katharina KUHN ◽  
Stephanie RUPF-KÖHLER ◽  
Alfred EIRICH ◽  
...  
Keyword(s):  
Dimensional Analysis ◽  
Three Dimensional ◽  
Impression Materials ◽  
Dental Impression

scholarly journals Effect of the disinfection technique on the linear dimensional stability of dental impression materials

2004 ◽  
Vol 12 (3) ◽  
pp. 244-249 ◽  
Author(s):  
Sávio Marcelo Leite Moreira da Silva ◽  
Milton Carlos Gonçalves Salvador
Keyword(s):  
Stainless Steel ◽  
Dimensional Stability ◽  
Three Dimensional ◽  
Control Group ◽  
Running Water ◽  
Impression Materials ◽  
Dimensional Measurements ◽  
Disinfectant Solution ◽  
Dental Impression ◽  
Mixing Method

The purpose of this study was to evaluate the dimensional stability of heavy and light bodied condensation silicones after immersion in disinfectant solution for 10 or 20 minutes. The impression materials were Optosil Comfort and Xantopren VL Plus and the disinfectant solutions were 1% sodium hypochlorite and 2% glutaraldehyde. Impressions were made on a perforated stainless steel tray, according to the American Dental Association specification No. 19, adding up to a total of 50 samples. The double mixing method (one time, two viscosities) was used. Impressions were removed from the roulette block after 7 minutes to ensure complete curing and then immersed in the solutions. Impressions not submitted to treatment composed the control group. After these steps, the impressions were removed from the solution, rinsed in running water and air-dried. Three-dimensional measurements were calculated using an optic microscope graduated at 0.001 mm. The two-way ANOVA indicated no differences (p>0.05) for any combination between variables. The results showed that the solution studied can be safely used to disinfect condensation silicone in clinical prosthodontic procedures.

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