scholarly journals Fabrication Technique of Dental Restoration Using Hybrid Ceramic With Cad Cam Method

2017 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Meita Andriyani ◽  
Sonya Harwasih ◽  
Eny Inayati
Keyword(s):  
Ceramic Material ◽  
Load Capacity ◽  
Polymer Network ◽  
High Strength ◽  
Hybrid Structure ◽  
Dental Restoration ◽  
Hybrid Network ◽  
Dental Restorations ◽  
Cad Cam ◽  
Hybrid Ceramic

Background :  Ceramic is superior in aesthetic but fragile and breakable under bite pressure . Lack of understanding of material requirements for resistance in the oral cavity and minimal ceramic processing techniques is the initial cause of the failure. Hybrid ceramic dental restoration is a material that combines the good properties of ceramics and composites that have elasticity and ensures high strength and minimize the wall thickness of the restoration. Mechanical manufacture of dental restorations currently growing, CAD CAM systems are becoming popular in the field of dentistry. CAD CAM provides the advantage that the effectiveness of the time, does not require a lot of human resources, and produce a restoration with good quality. Purpose:  To explain hybrid ceramic material and techniques of making  hybrid ceramic dental restorations with CAD CAM system. Review: Hybrid ceramic is a material that combines the advantages of ceramics and composite elasticity. This material contains a hybrid structure with two networks, ceramic and polymer are linked to each other, known as double hybrid network. It added that the structure of the ceramic feldspathic network (86% wt) is reinforced by a polymer network (14% wt) are integrated as a polymer network filling cavities that exist in the network and make its structure ceramic hybrid ceramic material becomes denser. Conclusion: Hybrid ceramic having chewing load capacity and high elasticity, flexural strength  150-160 Mpa and fracture toughness 1.5 Mpa, higher than conventional ceramics. Mechanical manufacture of dental restorations using ceramic hybrid materials with CAD CAM method begins with scanning, selection of materials and tooth shade, designing, milling, followed by finishing, polishing, ends with staining and glazing.

Performance Study on Miniaturized Rapid Denture Repair System

2012 ◽  
Vol 591-593 ◽  
pp. 315-318
Author(s):  
Lin Zhang ◽  
Fen Fen Tu ◽  
Jie Wang
Keyword(s):  
Processing System ◽  
Dental Restoration ◽  
System Structure ◽  
Repair System ◽  
Performance Study ◽  
Technical Parameters ◽  
Dental Restorations ◽  
Cad Cam ◽  
Machining System ◽  
Laser Interferometers

The paper presents a miniaturized two-spindle rapid denture repair system with applications on CAD/CAM dental restorations. The necessary functions possessed by denture processing system in medical treatment environment were defined, and the main technical parameters of the machining system were determined. The modal tests of the system structure were conducted for the key areas vibration mode. The volumetric geometric errors of the system were measured with laser interferometers. At last, the milling experiments of human molar crown denture were carried out with the mean surface roughness Ra value 0.8μm, which is consistent with the requirement of dental restoration.

Semi-Sintered Medical Zirconia Ceramic Used for Denture CAM Processing

2016 ◽  
Vol 693 ◽  
pp. 597-604
Author(s):  
Xiao Bao Lei ◽  
Feng Xie
Keyword(s):  
High Strength ◽  
Dental Restoration ◽  
Zirconia Ceramic ◽  
Revolutionary Change ◽  
Zirconium Ceramic ◽  
Cad Cam ◽  
Good Biocompatibility ◽  
Materials Used ◽  
Machining Properties ◽  
Dental Restorative

CAD/CAM technology has been widely applied in the field of oral restoration, which creates a revolutionary change in the pattern of traditional handmade denture and puts forward new demands on the past medical dental restorative material. The materials used for making dentures should own good machining properties and biocompatibilities. Medical zirconium ceramic have a broad prospect in the field of oral restoration because of its features are high strength, high toughness, good biocompatibility, high similarity of performance and aesthetic effect of processed dentures to real dentals. Dental restoration was obtained initially by NC machining using the feature that zirconium ceramic was not fully hardened but had a definite range of strength in the semi-sintered state. Experimental results shown that the ceramic denture machined by this processing has better surface quality and can satisfy requirements of oral restoration. Observation results shown that cutting surfaces were smooth, grinding cracks were tiny and uniform, and there were no obvious fracture gaps on edges and complex irregular surface of neck could be better reflected.

scholarly journals Evaluation of Bleaching on a CAD/CAM Hybrid Ceramic Material

2017 ◽  
Vol 62 (1) ◽  
pp. 61-71 ◽  
Author(s):  
Bogdan Culic ◽  
◽  
Cristina Gasparik ◽  
Mihai Varvara ◽  
Carina Culic ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Cad Cam ◽  
Hybrid Ceramic

scholarly journals Mechanical Properties of Polymer-Based Blanks for Machined Dental Restorations

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7293
Author(s):  
Lucian Toma Ciocan ◽  
Jana Ghitman ◽  
Vlad Gabriel Vasilescu ◽  
Horia Iovu
Keyword(s):  
Mechanical Properties ◽  
Dental Materials ◽  
Clinical Problem ◽  
Morphological Properties ◽  
Dental Restorations ◽  
Wide Range ◽  
Cad Cam ◽  
Treatment Technologies ◽  
Restorative Dental Materials ◽  
Hybrid Ceramic

The tremendous technological and dental material progress led to a progressive advancement of treatment technologies and materials in restorative dentistry and prosthodontics. In this approach, CAD/CAM restorations have proven to be valuable restorative dental materials in both provisional and definitive restoration, owing to multifarious design, improved and highly tunable mechanical, physical and morphological properties. Thus far, the dentistry market offers a wide range of CAD/CAM restorative dental materials with highly sophisticated design and proper characteristics for a particular clinical problem or multiple dentistry purposes. The main goal of this research study was to comparatively investigate the micro-mechanical properties of various CAD/CAM restorations, which are presented on the market and used in clinical dentistry. Among the investigated dental specimens, hybrid ceramic-based CAD/CAM presented the highest micro-mechanical properties, followed by CAD/CAM PMMA-graphene, while the lowest micro-mechanical features were registered for CAD/CAM multilayered PMMA.

scholarly journals Evaluation of the Feasibility of NaCaPO4-Blended Zirconia as a New CAD/CAM Material for Dental Restoration

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3819
Author(s):  
Ting-Hsun Lan ◽  
Yu-Feng Chen ◽  
Yen-Yun Wang ◽  
Mitch M. C. Chou
Keyword(s):  
Computer Aided Design ◽  
Optical Microscope ◽  
Dental Restoration ◽  
Numerical Control ◽  
Test Results ◽  
Cnc Machine ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Better Than

The computer-aided design/computer-aided manufacturing (CAD/CAM) fabrication technique has become one of the hottest topics in the dental field. This technology can be applied to fixed partial dentures, removable dentures, and implant prostheses. This study aimed to evaluate the feasibility of NaCaPO4-blended zirconia as a new CAD/CAM material. Eleven different proportional samples of zirconia and NaCaPO4 (xZyN) were prepared and characterized by X-ray diffractometry (XRD) and Vickers microhardness, and the milling property of these new samples was tested via a digital optical microscope. After calcination at 950 °C for 4 h, XRD results showed that the intensity of tetragonal ZrO2 gradually decreased with an increase in the content of NaCaPO4. Furthermore, with the increase in NaCaPO4 content, the sintering became more obvious, which improved the densification of the sintered body and reduced its porosity. Specimens went through milling by a computer numerical control (CNC) machine, and the marginal integrity revealed that being sintered at 1350 °C was better than being sintered at 950 °C. Moreover, 7Z3N showed better marginal fit than that of 6Z4N among thirty-six samples when sintered at 1350 °C (p < 0.05). The milling test results revealed that 7Z3N could be a new CAD/CAM material for dental restoration use in the future.

Crystal Phase Formation and Mechanical Properties of Lithium Disilicate Glass-Ceramics for Dental Restoration

2010 ◽  
Vol 177 ◽  
pp. 447-450 ◽  
Author(s):  
Xin Zhang ◽  
Yi Wen Hu ◽  
Yin Wu ◽  
Wen Jie Si
Keyword(s):  
Mechanical Properties ◽  
Phase Formation ◽  
Glass Ceramics ◽  
High Strength ◽  
Lithium Disilicate ◽  
Sem Analysis ◽  
Dental Restoration ◽  
Bending Test ◽  
Crystal Phase ◽  
High Temperature Xrd

The purpose of this study was to evaluate the crystal phase formation behavior and its influence on the mechanical properties of LiO2-SiO2-P2O5 glass-ceramics system. High temperature XRD was used to analyze the crystal phase formation in situ. The crystalline phases in the material both before and after heat-treatment were also analyzed. The flexural strength was measured by three-point bending test according to ISO 6872:2008(E). The SEM analysis showed that the high strength of the glass-ceramics is attributed to the continuous interlocking microstructure with fine lithium disilicate crystallines.

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