Zhermack Information Magazine

Impression silicones: addition and condensation types compared

30 August 2022

There are a many different impression materials on the market. Some of these, like hydrocolloids, are intended only for preliminary impressions while others, like elastomers, offer better performance and can therefore be used for final, precision impressions. Elastomers are also used to make other materials in addition to impression silicones. Impression silicones come in two types: […]

The ideal properties of stone models: the importance of basics

30 August 2022

The production of a stone model is a key part of most procedures that result in a prosthesis or orthodontic device [1]. Stone models are positive reproductions of the patient’s intraoral anatomy. They are made from negative moulds, themselves obtained from intraoral impressions made using impression materials (alginates, polyvinylsiloxanes, etc.). They are then mounted in an articulator […]

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 pyramid […]

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 from a replica of the patient’s anatomy, as part of a […]

Additive dentistry and aesthetic reconstruction methods

8 July 2022

Abrasion and erosion are the two most frequent causes of loss of dental tissue. Abrasion is a mechanical phenomenon caused by repeated abrasive movements, which may be either parafunctional, like bruxism, or traumatic, such as incorrect brushing techniques and, possibly, the use of highly abrasive toothpastes. Erosion, on the other hand is a phenomenon of […]

The advantages of scanning a dental impression

8 July 2022

Over the last decade, the spread of Computer Aided Design and Computer Aided Manufacturing (CAD/CAM) has led to the development of digital technologies and new workflows in the field of dentistry. [1] Dentists are making an increasing use of intraoral scanners, which produce STL files and generate three-dimensional (3D) images of scanned objects, to obtain […]

Dental veneer cementing

9 May 2022

The clinical success of dental veneers depends on various factors, including proper cementing. (1) As far as the materials and techniques for the preparation of dental veneers are concerned (add internal link to the “Dental veneers: materials and preparation techniques”), they are usually fabricated using feldspathic ceramic or lithium disilicate, although zirconia and composite resin […]