Application of CAD/CAM technologies and materials for prosthetic restoration of severely damaged teeth-clinical cases

Accuracy of CAD/CAM Technology in Fabricating Custom Post-and-Core Restorations: A Comparative Analysis

OBJECTIVE

This study aims to compare the accuracy of various intraoral scanners and traditional analog impressions in scanning root canals for CAD/CAM post-fabrication.

METHODS

A dental mannequin with a factory-made #21 tooth root canal was used to simulate clinical settings. Three intraoral scanners were tested: CEREC Primescan, TRIOS 3, and CEREC Omnicam. The inEos X5 desktop scanner provided high-resolution control images. The analog impression polyvinyl siloxane (PVS) material was used with custom trays, following standard protocols. The surface areas were measured with CAD software and compared with the desktop scanner's reference.

RESULTS

Primescan demonstrated the highest accuracy among the intraoral scanners, followed by Trios 3 and Omnicam. Significant differences were found between each scanner and the true surface area. The analog impression method demonstrated superior accuracy compared with intraoral scanners; however, this high precision is attributed to irregularities in the silicone material.

CONCLUSIONS

The analog impression method was more accurate in capturing the details of complex root canal anatomy; however, material irregularities can affect its clinical efficacy. Intraoral scanners showed high accuracy but had some limitations in capturing complex geometries. Further development of scanner technology will increase precision and, therefore, the clinical outcome.

CLINICAL SIGNIFICANCE

The use of CAD/CAM technology and intraoral scanners offers potential for precise, custom-fit post-and-core restorations.

Comparative Analysis of the Mechanical Properties and Biocompatibility between CAD/CAM and Conventional Polymers Applied in Prosthetic Dentistry

Modern media often portray CAD/CAM technology as widely utilized in the fabrication of dental prosthetics. This study presents a comparative analysis of the mechanical properties and biocompatibility of CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) polymers and conventional polymers commonly utilized in prosthetic dentistry. With the increasing adoption of CAD/CAM technology in dental laboratories and practices, understanding the differences in material properties is crucial for informed decision-making in prosthodontic treatment planning. Through a narrative review of the literature and empirical data, this study evaluates the mechanical strength, durability, esthetics, and biocompatibility of CAD/CAM polymers in comparison to traditional polymers. Furthermore, it examines the implications of these findings on the clinical outcomes and long-term success of prosthetic restorations. The results provide valuable insights into the advantages and limitations of CAD/CAM polymers, informing clinicians and researchers about their suitability for various dental prosthetic applications. This study underscores the considerable advantages of CAD/CAM polymers over conventional ones in terms of mechanical properties, biocompatibility, and esthetics for prosthetic dentistry. CAD/CAM technology offers improved mechanical strength and durability, potentially enhancing the long-term performance of dental prosthetics, while the biocompatibility of these polymers makes them suitable for a broad patient demographic, reducing the risk of adverse reactions. The practical implications of these findings for dental technicians and dentists are significant, as understanding these material differences enables tailored treatment planning to meet individual patient needs and preferences. Integration of CAD/CAM technology into dental practices can lead to more predictable outcomes and heightened patient satisfaction with prosthetic restorations.

Materials and Methods for All-Ceramic Dental Restorations Using Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) Technologies-A Brief Review

The materials used in dentistry for the fabrication of all-ceramic restorations have undergone great and rapid developments over the last two decades. Among the most common ceramic materials in dentistry are those based on zirconium and lithium disilicate. Due to the properties of these materials, they are in great demand in the field of dental restoration production. Thus, dental restorations that will use those materials are commonly machined in CAD/CAM systems, which offer the possibility of manufacturing all-ceramic dental restorations in a very short period of time. This article reviews the modern materials in the field of all-ceramic dental restorations, their manufacturing processes, as well as what determines which ceramic materials are used for the production of CAD/CAM blanks and their production technology.

Recent Advances in 3D Printing of Polymers for Application in Prosthodontics

Contemporary mass media frequently depict 3D printing as a technology with widespread utilization in the creation of dental prosthetics. This paper endeavors to provide an evidence-based assessment of the current scope of 3D printing's integration within dental laboratories and practices. Its primary objective is to offer a systematic evaluation of the existing applications of 3D-printing technology within the realm of dental prosthetic restorations. Furthermore, this article delves into potential prospects, while also critically examining the sustained relevance of conventional dental laboratory services and manufacturing procedures. The central focus of this article is to expound upon the extent to which 3D printing is presently harnessed for crafting dental prosthetic appliances. By presenting verifiable data and factual insights, this article aspires to elucidate the actual implementation of 3D printing in prosthetic dentistry and its seamless integration into dental practices. The aim of this narrative review is twofold: firstly, to provide an informed and unbiased evaluation of the role that 3D printing currently plays within dental laboratories and practices; and secondly, to instigate contemplation on the transformative potential of this technology, both in terms of its contemporary impact and its future implications, while maintaining a balanced consideration of traditional dental approaches.