Making impressions has always been an essential part of dentistry. Due to difficulties such as gagging, disagreeable taste, and many others, it was formal accomplished with traditional impression materials such as alginate, agar-agar, and elastomeric impressions. Digital impressions and digital scanners were among the latest methods. The entire way of taking classical impressions that includes a lot of stages like tray selection, material blending trying to load, tray placing, and withdrawal, has been excluded along the evolution of classical impressions, and the act of collecting smart impressions is much faster and uncomplicated. So, in order to learn more about the digital impression, this force was chosen. We have considered advantages and disadvantages of digitized impression techniques vs. conventional impression. The reliability of digitized impressions in restorative dentistry is determined by a number of factors. The accuracy of digital imprints in restorative dentistry may be influenced by the depth/angulations of the implants, the operator's skill, the intra-oral scanner employed, and environmental factors. The goal of this research was to see what factors could influence the reliability of digital imprints in restorative dentistry. In dentistry, Intra Oral Scanners (IOSs) are utilized to capture optical transmission impressions. The advancement of 3D technology, as well as the growing usage of IOSs in dental clinics, has required a review of the integrity of intra-oral digitized impressions. In dentistry, Intra Oral Scanners (IOSs) are utilized to capture optical transmission impressions. The advancement of 3D technology, as well as the growing usage of IOSs in dental clinics, has required a review of the integrity of intra-oral digitized impressions. The outcomes of the various IOS systems were found to be variable in the investigations. While the efficiency of IOS systems looks to be prospective and similar to traditional approaches, they are not without faults.
