What is the recommended ratio of alginate to water for mandibular impressions?

The recommended ratio of alginate to water for mandibular impressions is commonly 1:2. This means that for every part of alginate, two parts of water are used. This specific ratio allows for optimal consistency and working time, which is essential for capturing accurate impressions. A thicker mix, which would occur if the ratio were more alginate than water, can lead to a more challenging manipulation and a lack of detail in the impression. Conversely, a diluted mixture with less alginate could compromise the structural integrity and allow for deformation as the impression material sets. Thus, the 1:2 ratio is ideal for achieving the necessary viscosity and flow, facilitating precise detail capture and ease of use during the impression-taking process.