Ideal Properties Of Impression Materials

Ideal Properties Of Impression Materials

“What are the ideal properties of impression materials? A detailed question and answers guide”

Ideal Requirements of an Impression Material:

• Have a pleasant taste, odor, and aesthetic color.
• Not contain any toxic or irritating ingredients.
• Have an adequate shelf-life for storage and distribution.
• Be economic.
• Be easy to use with the minimum equipment.
• Have adequate setting characteristics that meet clinical requirements.
• Possess a satisfactory consistency and texture.
• Have an adequate strength so that it will not break or tear while removing from the mouth.
• Possess elastic properties with freedom from permanent deformation after strain.
• Exhibit dimensional stability.
• Be compatible with the die and cast materials.

“Understanding ideal properties of impression materials through FAQs: Accuracy, stability, and biocompatibility explained”

“Importance of studying ideal properties for dental professionals: Questions explained”

Disinfection Of Impressions

Disinfection of impression is a concern because of viral diseases such as hepatitis B, AIDS, and herpes simplex.

The viruses can contaminate the gypsum mould and present a risk to dental laboratory and operating personnel. As impression is removed from the mouth, it is disinfected before pouring the cast to prevent cross-contamination.

• As per protocol of Centers for disease control and Prevention, hydrocolloid impressions should be immersed in household bleach, iodophors or synthetic phenols.
• As the impression is taken out from mouth, it is thoroughly rinsed and then disinfectant is sprayed over the impression.
• Now the impression is wrapped in a disinfectant-soaked towel, and is sealed for 10 minutes.

“Common challenges in mastering impression material knowledge effectively: FAQs provided”

• As disinfection get complete impression is thoroughly rinsed with water to remove remnants of disinfectant which can affect surface of cast when gypsum is poured.
• For disinfecting the elastomeric impression materials recommended disinfectant solutions except for polyether are 2% glutaraldehyde, chlorine compounds, complex phenolic and phenolic glutaraldehyde compounds.
• As polyethers are hydrophilic their disinfectant protocol is same as hydrocolloids.
• Impressions are disinfected for 10 minutes in 2% glutaraldehyde and for 3 minutes in chlorine compounds.