The purpose of this article is to present some of the most significant image processing technologies that are utilised in dental restoration, as well as to emphasise the relevance of image processing technology in dental restoration and its applicability. The following are examples of information sources: Using the search phrases "tooth colour," relevant English papers that were published between the years 1990 and 2021 were located using a computer-based internet search of HighWire biomedical full-text electronic resources on the internet. During this time, we searched for related Chinese publications using the keywords "computer aided design, tooth, digital" and "image processing, tooth" in the VIP database from 2001 to 2007 and the Wanfang database from 2000 to 2021, respectively. Both of these databases covered the years 2001 to 2007. Choices Made Regarding Research: Over two hundred and fifty articles were compiled, and from those, the top ten were selected. The first kind of research included written materials on tooth bleaching as well as the components and production process of baked porcelain teeth. The second type of research included basic investigations, case reports, or repeated studies. Only articles that discussed the following topics were read in their entirety: 1 the current state of tooth damage in China and the importance of dental restoration; 2 the acquisition of digital tooth images and preconditioning of tooth images; 3 the three-dimensional image reconstruction of general tooth films; 4 computer-aided colour matching technology; and 5 current tooth restoration products both in China and abroad. Extraction of Data In order to conduct this research, a total of twenty-six different pieces of literature on a variety of subjects, such as digital dental image capture and preconditioning, three-dimensional image reconstruction of general dental films, and computer assisted colour matching technology, were selected as samples. The Process of Information Synthesis: Digitized X-ray imaging technology is the current development trend in the field of dental diagnostics. In picture preconditioning, the most common ways are geometrical alteration and image enhancement. In dental restoration, additional essential approaches include three-dimensional image reconstruction and computer-assisted colour matching. According to the findings, the composites with particular monomers (Digital image processing, meth acrylamide, methacrylic acid, and 1-6 hexanediol methacrylate) for group (D) that were reinforced with silica nanoparticle have elevated flexural properties as compared with other types of the prepared nanocomposite, where these values reached to (144 MPa and 5.4 GPa) for flexural strength and flexural modulus respectively.