Zhermack Information Magazine

The classification of elastic and rigid impression materials

8 September 2022

What impression materials are used in dentistry and how are they classified?

Impression materials can be divided into two main types [1,2]:

  1. Elastic impression materials
  2. Rigid (or non-elastic) impression materials

All impression materials fall into one or the other of these categories, which differ

ISO 4823: the standard governing impression materials

8 September 2022

187 ISO standards have been published in the field of dentistry, regulating almost all aspects of the dental industry and establishing the requirements that need to be respected. (1)

ISO is an independent, international, non-governmental organisation. Its membership is made up of the national …

The uses of gypsum in dentistry

30 August 2022

Gypsum is a mineral form of calcium sulphate dihydrate. It has been known for millennia and has been used for many purposes. 5000 years ago, the ancient Egyptians used to fire “plaster of Paris” in open air furnaces. They then added water to make cement for assembling the blocks of the pyramids (e.g. the…

Safety in the laboratory: risks and precautions

30 August 2022

As things stand today, most rehabilitative processes in dentistry involve one or more phases distributed between the dental practice and the laboratory.

The dental technician is the lab professional who works in close collaboration with the dentist and produces various types of devices starting…