Fig. 4From: Immediate and Delayed Post Space Preparations in Endodontically Treated Teeth: A Scoping ReviewAuthor hot topics among 67 included articles using density visualization. Red–yellow–green–blue color scheme was used; red corresponds to the highest and blue corresponds to the lowest density of keyword co-occurrence. The distance-based approach was used; smaller the distance between two item means the higher relatednessBack to article page