Zirconia toughened mica glass ceramics for dental restorations
One of the global goals of oral health is to increase the number of individuals with functional dentition by the year 2020 [1]. The present global statistics demonstrate an alarming need for dental crowns and prosthetic rehabilitation. According to National Commission on Macroeconomics and Health (NCMH), the incidence of complete edentulism has been reported to be 7 –69% world-wide, with developing nations, having edentulism at 11–37% in the age group of 65–75 years [2,3]. Addressing the above clinical problem of edentulism, dental ceramics have been popular as indirect restorative materials due to their esthetics, b...
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Sivaranjani Gali, Ravikumar K., B.V.S. Murthy, Bikramjit Basu Source Type: research
Multitechnique characterization of conventional and experimental Ag-based brazing alloys for orthodontic applications
To characterize the microstructure, mechanical properties, ionic release and tarnish resistance of conventional and experimental Ag-based soldering alloys for orthodontic applications. (Source: Dental Materials)
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Argyro Ntasi, Youssef S. Al Jabbari, Nick Silikas, Theodore Eliades, Spiros Zinelis Source Type: research
Development of a novel dental resin cement incorporating FGF-2-loaded polymer particles with the ability to promote tissue regeneration
Dental adhesives are widely used for dental restoration. Recently, they have been used for many other applications, such as root-end filling [1 –3], perforation sealing [4], and repair of fractured roots [5–8], owing to the improvement of their physical and sealing properties. However, conventional adhesive resins have no ability to promote tissue regeneration, and a favorable prognosis cannot be expected in cases with severely damaged periodontal tissue. To increase the success rate of treatments using adhesive resins in periodontal tissue, it would be beneficial to provide the ability to promote tissue regeneration. ...
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Ririko Tsuboi, Jun-Ichi Sasaki, Haruaki Kitagawa, Itsumi Yoshimoto, Fumio Takeshige, Satoshi Imazato Source Type: research
The effect of hydrofluoric acid concentration on the fatigue failure load of adhesively cemented feldspathic ceramic discs
Among a wide range of CAD/CAM blocks available to produce monolithic restorations, the feldspathic ceramic Vitablocs Mark II (Vita Zanhfabrik, Bad S äckingen, Germany) is fabricated using fine-structure ceramic powders under industrial sintering process, resulting in good polishing properties, decreased enamel wear, and increased strength due to a nearly pore free ceramic [1]. Also, the fracture resistance of the feldspathic ceramic restoration s may be improved with appropriate bonding procedures [2]. (Source: Dental Materials)
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Andressa B. Venturini, Catina Prochnow, Gabriel K.R. Pereira, Arie Werner, Cornelis J. Kleverlaan, Luiz Felipe Valandro Source Type: research
The two sides of the C-factor
The aim of this paper is to investigate the effects on shrinkage strain/stress development of the lateral constraints at the bonded surfaces of resin composite specimens used in laboratory measurement. (Source: Dental Materials)
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Alex S.L. Fok, Wondwosen A. Aregawi Source Type: research
8DSS peptide induced effective dentinal tubule occlusion in vitro
Dentin hypersensitivity is a common dental problem with a prevalence of 15 –25% in the general population [1]. It is characterized as transient acute pain associated with thermal, chemical, mechanical and osmotic stimuli. It has been confirmed that opened dentinal tubules, dentin permeability and dentin hypersensitivity are in close relationship according to the hydrodyn amic hypothesis [2], which is the most accepted theory to explain the mechanism of dentin hypersensitivity. Under the condition of dentin hypersensitivity, dentinal tubules are often open with an enlargement of the diameter, which result in an increase i...
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Kunneng Liang, Shimeng Xiao, Hongling Liu, Wenyuan Shi, Jianshu Li, Yuan Gao, Libang He, Xuedong Zhou, Jiyao Li Source Type: research
Influence of thread shape and inclination on the biomechanical behaviour of plateau implant systems
To assess the influence of implant thread shape and inclination on the mechanical behaviour of bone-implant systems. The study assesses which factors influence the initial and full osseointegration stages. (Source: Dental Materials)
Source: Dental Materials - February 3, 2018 Category: Materials Science Authors: Michele Cal ì, Elisabetta Maria Zanetti, Salvatore Massimo Oliveri, Riccardo Asero, Stefano Ciaramella, Massimo Martorelli, Cristina Bignardi Source Type: research
Approximate relative fatigue life estimation methods for thin-walled monolithic ceramic crowns
The objective is to establish an approximate relative fatigue life estimation method under simulated mastication load for thin-walled monolithic restorations. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Sadia Nasrin, Noriko Katsube, Robert R. Seghi, Stanislav I. Rokhlin Source Type: research
Synthesis and characterization of Ciprofloxacin-containing divinyl oligomers and assessment of their biodegradation in simulated salivary esterase
More than half of the estimated 500 million direct dental restorations placed annually worldwide are resin composites [1]. The growing interest in resin composites has been driven primarily by their superior aesthetics, ease of polymerization and facile handling. Despite the extensive use of resin composites, the resultant restorations lack the durability and chemical stability of amalgam fillings in the oral cavity [2]. This is primarily due to the inherent susceptibility of the ester linkages (which are introduced upon coupling of the methacrylate moiety) to chemical hydrolysis. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Yasaman Delaviz, Mitchell A. Nascimento, Michael W. Laschuk, Timothy W. Liu, Meilin Yang, J. Paul Santerre Source Type: research
Predicting refractive index of fluoride containing glasses for aesthetic dental restorations
Dental restoration aesthetics, particularly the translucency of modern dental restorative filling materials depends on the refractive index (RI) match between the different components in the material. In the case of dental composites (DC), the RI of the polymer must match the RI of the filler otherwise the material is optically opaque and has limited depth of cure. In the case of glass ionomer cements (GICs), the RI of the ion-leachable glass must match the RI of the polysalts to engineer a smart material with a tooth-like appearance. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Tomas Duminis, Saroash Shahid, Natalia G. Karpukhina, Robert G. Hill Source Type: research
Optical properties of composite restorations influenced by dissimilar dentin restoratives
High esthetic requirements present a challenge in restorative dentistry due to the complex structure of dental tissues. This complexity is reflected in the specific micro-morphology, variable thickness, anisotropic and polychromatic nature as well as different composition of enamel and dentin [1,2]. The characteristic layout of enamel prisms and dentinal tubules and different amounts of organic substance cause differences in the optical parameters of these two tissues. Optical properties of contemporary composite restorations and natural teeth, despite differences in chemical composition and micro-structure, contribute to ...
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Jovana Marjanovic, Djordje N. Veljovic, Jovana N. Stasic, Tatjana Savic-Stankovic, Branka Trifkovic, Vesna Miletic Source Type: research
44Ca doped remineralization study on dentin by isotope microscopy
Dental caries is caused by an action of acids on an enamel surface and developed into dentin lesion. Unlike bone, tooth-regeneration is not a feasible physiological process. We have to consider prevention of caries, detection incident of caries at an early stage and strategies of remineralization for decayed lesions. Cariology researchers have worked on in vitro models to investigate caries progress, remineralization possibility of decalcified lesions and effects of anticariogenic agents such as fluoride. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: N. Hiraishi, S. Kobayashi, H. Yurimoto, J. Tagami Source Type: research
Approximate relative fatigue life estimation methods for thin-walled monolithic ceramic crowns
The objective is to establish an approximate relative fatigue life estimation method under simulated mastication load for thin-walled monolithic restorations. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Sadia Nasrin, Noriko Katsube, Robert R. Seghi, Stanislav I. Rokhlin Source Type: research
Synthesis and characterization of Ciprofloxacin-containing divinyl oligomers and assessment of their biodegradation in simulated salivary esterase
More than half of the estimated 500 million direct dental restorations placed annually worldwide are resin composites [1]. The growing interest in resin composites has been driven primarily by their superior aesthetics, ease of polymerization and facile handling. Despite the extensive use of resin composites, the resultant restorations lack the durability and chemical stability of amalgam fillings in the oral cavity [2]. This is primarily due to the inherent susceptibility of the ester linkages (which are introduced upon coupling of the methacrylate moiety) to chemical hydrolysis. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Yasaman Delaviz, Mitchell A. Nascimento, Michael W. Laschuk, Timothy W. Liu, Meilin Yang, J. Paul Santerre Source Type: research
Long-term dentin remineralization by poly(amido amine) and rechargeable calcium phosphate nanocomposite after fluid challenges
The objective of this study was to develop a long-term remineralization method to via poly(amido amine) (PAMAM) and rechargeable composite containing nanoparticles of amorphous calcium phosphate (NACP) after fluid challenges for the first time. (Source: Dental Materials)
Source: Dental Materials - February 2, 2018 Category: Materials Science Authors: Kunneng Liang, Shimeng Xiao, Junling Wu, Jiyao Li, Michael D. Weir, Lei Cheng, Mark A. Reynolds, Xuedong Zhou, Hockin H.K. Xu Source Type: research
