Waxes In Dentistry Question And Answers

Waxes In Dentistry

 

Classify dental waxes.
Answer:

During the construction of dentures and many other appliances waxes are used as a modeling material, different types of waxes are used to prepare patterns for alloy casting.

Classification of Dental Waxes:

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1. According to use in dentistry:

2. According to origin:

Mineral waxes :  Paraffin wax and microcrystalline waxes (distillation product of petroleum)

Plant waxes   :  Carnauba wax, candelilla wax, Japan wax, and cocoa butter

Insect waxes :    Bee wax

Animal wax   :   Spermaceti (obtained from the sperm of a whale).

ISO Classification (ISO 15854: 2005) for Casting Inlay and Base Plate Wax:

As per ISO two types of wax are present which are sub-classified based on their characteristics which represent their hardness.

• Type I (casting wax) — For cast metal restorations
  • Class 1: Soft.
  • Class 2: Hard.
• Type II (base plate wax)—For denture bases and occlusal rims.
  • Class 1: Soft
  • Class 2: Hard
• Class 3: Extra hard.

Question 2. Write a short note on the dental application of waxes.
Answer: