Zhermack Information Magazine

Preparing temporary restorations from impressions 

12 January 2023

A temporary restoration is a temporary device made to improve the aesthetics, stability and function of a tooth. It is used between the preparation of the tooth and the placement of the permanent restoration.[1]  There are three main techniques for making temporary restorations: direct, pre-filling indirect and post-filling indirect.  Of the various direct techniques, the […]

Hand hygiene: clarifying the difference between sanitizer and disinfectant

20 December 2022

The EPA (United States Environmental Protection Agency) defines the antimicrobial actions of “sanitizers” and “disinfectants” as follows: Sanitizing merely removes dirt and reduces germ count through mechanical action[1],[2]. This practice  is not intended to kill viruses. Disinfection on the other hand prevents or arrests the development or action of micro-organisms by inhibiting their proliferation or […]

The Casartelli (or Bridge Guide) Impression Technique

21 October 2022

The Casartelli (or Bridge Guide) impression technique is best suited to fixed prostheses, clinical cases in which correct reproduction of the preparation margin is complex or when other previously used impression techniques have failed. We will now focus on why this technique was developed, its advantages and the procedure for its proper application. The need […]

Disinfection of noncritical surfaces in dental clinics

20 October 2022

The market offers many types of disinfectants with differing characteristics in terms of theireffectiveness and compatibility with materials. In healthcare settings, choosing the right disinfectant can be far from simple. For this reason, in 1957, Earle Henry Spaulding defined the criteria for making this choice. Let’s take a look at them. Choosing a disinfectant based […]

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]: Elastic impression materials Rigid (or non-elastic) impression materials All impression materials fall into one or the other of these categories, which differ in how they can be used after setting in the oral […]