These specialised surgical instruments can be found in various variants to meet medical professionals' desires. Rubber dam: Prevents entry of moisture to your cavity, Primarily prior to insertion of silicate fillings, and during root canal therapy. Cusco's speculum In gynaecology, Cusco's self-retaining bivalved speculum can be a kind of speculums, https://dentstarint.com/product-category/general-surgery/needle-holders/