RESUMEN
Prosthodontic treatment is being performed for morphology and functional restoration due to damage and loss of teeth. As the aesthetic demands of patients increase, interest in ceramic materials with shades and translucency similar to natural teeth has increased.Recently, the manufacturing and processing technology of ceramic materials has greatly improved, and the market for dental ceramic materials is growing rapidly. The purpose of this literature review and evaluation is to provide information on the classification and properties of dental ceramic materials with excellent aesthetics and fracture resistance. In this article, it is classified as follows: I) Dental porcelain; II) Sinterable all-ceramic; III) Glass-ceramic for casting; IV) Glass-infiltrated alumina ceramic; V) Glass-ceramic ingots for heat-pressing technique; Vl) Blocks for CAD/CAM; Vll) Ceramic for CAD/3D printing. Dental ceramic materials and their restoration manufacturing methods have evolved significantly over the past decade. As a result, the manufacturing method of restorations has progressed from the layered firing technique of powdered materials or heat-pressing technique to the cutting and processing of single and multi-layer blocks using CAD/CAM technology, leading to the introduction of CAD/3D printing technology. In this manuscript, we will review the types of ceramic materials used in the fabrication of dental restorations and their advantages and disadvantages.
RESUMEN
Improvements in the mechanical and optical properties of ceramic materials and the development of dentin adhesives have resulted in more successful results in anterior teeth restorations. Among them, porcelain laminate veneer (PLV) can achieve aesthetic improvement in a conservative way while minimizing tooth reduction. A female patient in her 20s visited for aesthetic improvement of the maxillary anterior teeth. The patient's chief complaint was aesthetic improvement of tooth discoloration after trauma and endodontic treatment, and a PLV restoration was decided to reflect the patient’s demand for minimal tooth reduction. IPS e.max Press, a lithium disilicate-based ceramic with high light transmittance and high strength, was chosen for porcelain laminate veneer. Inner surface of the veneer was treated with liner in order to block discoloration of the abutment teeth while maintaining translucency in the incisal edge. The patient was satisfied with the aesthetic result.
RESUMEN
Lithium disilicate gradation block that have been recently introduced and used in dental clinics have superior light transmittance compared to zirconia-based restorations, so that when applied to anterior restorations, better esthetic results are expected. In addition, it has the advantage that the flexural strength is sufficient and chemical bonding with resin cement is possible. However, high transparency could be a disadvantage in the restoration of abutment teeth with severe discoloration, and various methods have been tried to compensate for this. In this study, in the restoration of central incisors with severe discoloration of the abutment, the inner surface of the crown made of lithium disilicate-based polychromatic blocks was treated with a liner to block the discoloration, and thus aesthetically satisfactory results were obtained.
RESUMEN
Based on rapid improvement in digital fields, many advanced digital technologies are utilized in prosthodontic treatment. Especially, intraoral scanners and 3D printing technology are commonly used, and facial scanning technology is recently being attempted to be part of these digital routines. This case report aims to introduce a digital procedure using the intraoral scanner, facial scanner, and 3D printing technology to create definitive restorations, which are esthetic and harmonious with patient’s face. From thoroughly evaluated full-mouth provisional restoration which was manufactured and fitted conventionally, definitive prostheses were fabricated using various digital technique. Stable occlusion with functionally and aesthetically satisfying results were achieved.
RESUMEN
The aim of the present study was to investigate the effects of N-acetyl cysteine (NAC) loading on the bone formation surrounding sandblasted, large-grit and acidetched(SLA) implants. Materials and methods: Implantation of NAC loaded SLA implants (NSI group) and SLA implants (SI group) was performed bilaterally in themandible of 4 adult beagle dogs (each group, n = 8). The animals were sacrificed after a healing period of 3 and 6 weeks, respectively (n = 2 animal each). Dissected blockswere processed for histomorphometrical analysis. Bone to implant contact percentage (BIC%) and bone volume (BV%) were assessed histomorphometrically. Results:BIC% of NAC loaded SLA implants were about 50% higher than that of SLA implants at 3 weeks of bone healing, but not significantly (51.79 vs 35.43%; P=.185). BV% ofNAC loaded SLA implants were significantly higher than that of SLA implants at 3 weeks of bone healing (45.09 vs 37.57 %; P=.044). At 6 weeks of bone healing, BIC%and BV% of two experimental groups were similar (P>.05). Conclusion: Within the limits of the present study, NAC loading have a positive effects on the early bone formationsurrounding SLA implants. So, it might be concluded that NAC loading enhance the osseointegration and shorten the healing time after implantation of the SLAimplants. (J Korean Acad Prosthodont 2020;58:77-85)