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Tensile Bond Strength of Etched Porcelain
... Sir, a number of Americans claimed to have invented ceramic veneers, including Simonsen & Calamia (1983), Calamia (1983) and Horn (also 1983). 1 In the mid-1980s, one enterprising USA company claimed that it had obtained a patent for 'Chameleon Veneers' as well as their associated luting products. Their patent lawyers demanded royalties from UK dentists to use 'their' technique and claimed that all dentists had to use a 'Chameleon certified' laboratory for the manufacture of any ceramic veneers. ...
... Sir, a number of Americans claimed to have invented ceramic veneers, including Simonsen & Calamia (1983), Calamia (1983) and Horn (also 1983). 1 In the mid-1980s, one enterprising USA company claimed that it had obtained a patent for 'Chameleon Veneers' as well as their associated luting products. Their patent lawyers demanded royalties from UK dentists to use 'their' technique and claimed that all dentists had to use a 'Chameleon certified' laboratory for the manufacture of any ceramic veneers. ...
... Sir, a number of Americans claimed to have invented ceramic veneers, including Simonsen & Calamia (1983), Calamia (1983) and Horn (also 1983). 1 In the mid-1980s, one enterprising USA company claimed that it had obtained a patent for 'Chameleon Veneers' as well as their associated luting products. Their patent lawyers demanded royalties from UK dentists to use 'their' technique and claimed that all dentists had to use a 'Chameleon certified' laboratory for the manufacture of any ceramic veneers. ...
... Sir, a number of Americans claimed to have invented ceramic veneers, including Simonsen & Calamia (1983), Calamia (1983) and Horn (also 1983). 1 In the mid-1980s, one enterprising USA company claimed that it had obtained a patent for 'Chameleon Veneers' as well as their associated luting products. Their patent lawyers demanded royalties from UK dentists to use 'their' technique and claimed that all dentists had to use a 'Chameleon certified' laboratory for the manufacture of any ceramic veneers. ...
... Sir, a number of Americans claimed to have invented ceramic veneers, including Simonsen & Calamia (1983), Calamia (1983) and Horn (also 1983). 1 In the mid-1980s, one enterprising USA company claimed that it had obtained a patent for 'Chameleon Veneers' as well as their associated luting products. Their patent lawyers demanded royalties from UK dentists to use 'their' technique and claimed that all dentists had to use a 'Chameleon certified' laboratory for the manufacture of any ceramic veneers. ...
... In the 1980s, the adhesive technology needed to fuse indirect restorations to the tooth structure was initially developed [1,2] . Since then, indirect adhesive restorations have emerged as a key component of restorative dental care. ...
... (Horn HR). [13][14] [15] A porcelain laminate veneer is extremely thin preformed shell of porcelain applied directly to tooth structure [16] . In aesthetic dentistry, laminates are not only used to restore the misshaped teeth but to restore the original colour of those teeth, as well as change the original colour of the teeth to impart a more natural look. ...
... 10 Daha sonra, seramik vener tekniklerindeki dönüm noktası Rochette'in çalışmaları ve sonrasında ise Simonsen ve Calamia tarafından daha da geliştirilmeleri olmuştur. 11,12 Yetmişli yılların ortalarında, bu konsept daha da geliştirildi ve bağlayıcılarla kullanılan direkt kompozit venerler piyasaya sürüldü. 1980'li yılların sonlarında, seramik venerler için kullanılan preparasyon teknikleri tekrar revize edildi ve preparasyonsuz uygulamalar piyasaya tanıtıldı. ...
Estetik olarak kullanılan dental materyaller portföyü son yıllarda ciddi şekilde genişlemiştir. Prefabrik kompozit rezin venerler, diş hekimlerinin işlerini kolaylaştırmak ve seramik venerlere göre maddi olarak daha uygun tedavi seçenekleri sunmak üzere geliştirilmiştir. Bu derlemenin amacı, anterior restoratif teknikler için yeni geliştirilen materyallerin klinik performansları ve uzun dönemli yüzey özelliklerini seramiklerle karşılaştırmaktır. Son yıllarda yapılan çalışmalar anterior kompozit rezinlerin çok iyi orta dönemli klinik performansları olduğunu göstermiştir. Diğer yandan, prefabrik kompozit rezin venerler hakkında elimizde sadece kısa dönemli sonuçlar mevcuttur. Rezin esaslı restorasyonların yüzey özellikleri, hastaların alışkanlıklarına ve kullanılan materyalin yapısına bağlıdır. Düzenli kontroller, düzenlemeler ve tekrar cilalama işlemleri kompozit rezin restorasyonların uzun dönemli başarıları için gereklidir. Prefabrik kompozit rezin venerler veya şeffaf şablonların kullanılması, seramik restorasyonların maliyetlerini karşılayamayan ancak yine de güzel bir gülüşe tek seansta sahip olmak isteyen hastalar için, indirekt venerlere bir alternatif teşkil etmektedir.
ABSTRACT The armamentarium of dental materials for esthetic procedures has increased exponentially. Prefabricated resin veneers were introduced to facilitate the dentist's work and provide an affordable alternative to ceramic veneers. The objective of this review is to discuss the clinical performance and long-term surface quality of anterior restorative techniques with resin composites and prefabricated resin veneers in comparison to ceramic. Studies have proved that resin composite anterior restorations had good middle-term clinical performance. On the other hand, prefabricated resin composite veneers have only documented short-term results. The surface quality of resin-based restorations depends on the patients' habits and the material's nature. Periodic recalls, refurbishment, and re-polishing procedures need to be performed to extend their longevity. Prefabricated resin veneers can be advocated as an alternative to direct veneers for patients who cannot afford the cost of ceramic veneers but still want to have a harmonious smile in a single visit.
... In order to ensure direct adhesion to the restoration surfaces, various surface roughening methods should be applied. In addition to mechanical methods such as green stone, emery, diamond milling, sandblasting with aluminum oxide, chemical agents such as hydrofluoric acid, phosphoric acid, acidulated phosphate fluoride and laser applications such as Er:YAG, Nd:YAG, CO2 have also been studied in the literature [14][15][16][17][18][19]. ...
The aim of this study was to evaluate the effects of different surface conditioning method combinations on the shear strength of orthodontic brackets bonded various temporary crown materials used in computer aided design and computer aided manufacturing systems. 100 polymethyl methacrylate, 100 bis-acrylic composite and 100 polyetherketoneketone surfaces were prepared from provisional temporary crown blocks. Five different conditioning protocols (etching with 9.6 % hydrofluoric acid, sandblasting with 50 μm Al2O3 particles, roughening with ultrafine diamond bur, Er,Cr:YSGG laser irradiating and priming with methylmethacrylate monomer were applied to the surfaces for each material group. Shear test was performed to half of the bonded samples after 24 hours while the other half 14 days later. The share strengths of the bonded brackets were measured in Newton and Megapascals. In all material groups, the highest share strength values were found in samples sandblasted with Al2O3 particles. For bis-acrylic composite and polymethyl methacrylate groups, the lowest bond strength value were found in samples irradiated with Er,Cr:YSGG laser. The shear bond strengths of the orthodontic brackets bonded to the temporary crown materials produced in CAD/CAM systems vary according to the structure of the material and surface conditioning processes.
... One of the most popular rehabilitation techniques for the anterior segment of the mouth is the veneering of the teeth introduced by Dr. Pincus in 1937 [13] to enhance movie stars' smiles in Hollywood. Later, the turning point in the ceramic veneer technique started with the work of Rochette [14] which was afterward revised and improved by Simonsen and Calamia [15]. Furthermore, this concept was elaborated in the mid-1970s with the introduction of direct resin composite bonding. ...
Purpose of Review
The armamentarium of dental materials for esthetic procedures has increased exponentially. Prefabricated veneers were introduced to facilitate the work of the dentist and provide an affordable alternative to ceramic veneers. The objective of this review is to discuss the clinical performance and long-term surface quality of anterior restorative techniques with resin composites and prefabricated veneers in comparison to ceramic.
Recent Findings
Recent studies have proved that resin composite anterior restorations had a very good middle-term clinical performance. On the other hand, prefabricated resin composite veneers have only documented short-term results.
Summary
The surface quality of resin-based restorations depends on the habits of the patients and the nature of the material used. Periodic recalls, refurbishment, and re-polishing procedures need to be performed to extend their longevity. Prefabricated veneers or the use of clear templates can be advocated as an alternative to direct veneers for patients that cannot afford the cost of ceramic veneers but still wants to have a harmonious smile in a single visit.
Objectives
To evaluate the clinical performance of adhesively bonded lithium disilicate glass-ceramic (LDG) partial-coverage crowns in restoring posterior endodontically treated teeth (ETT).
Methods and Materials
A total of 121 morphologically compromised posterior ETT were restored with LDG partial-coverage crowns between October 2015 and January 2018. The restorations were fabricated in the laboratory or at the chairside. Two adhesive systems and resin cements were used to cement the restorations. Tooth and restoration survival rates were calculated. The restorations were evaluated clinically using the modified United States Public Health Service (USPHS) criteria for an observation period of 5-7 years. The Cox proportional hazards model was used to estimate relative failure risks such as tooth type, resin cements, gender, and sleep bruxism. The standard chi-squared test was used to compare the survival of different tooth types for significant differences (α=0.05). In addition, survival probability was calculated using the Kaplan–Meier algorithm.
Results
Among seven failed cases, one was a tooth fracture, and six were restoration fractures. According to the Kaplan–Meier analysis, the estimated survival rate of the teeth was 99% for seven years, while the estimated survival rate of the restorations was 94.8% for 5 years and 92.8% for 7 years. Tooth type and resin cements did not influence restoration survival rates (p>0.05), while sleep bruxism and male patients might increase the risk of failure (p<0.05).
Conclusions
The indirect adhesively bonded LDG partial-coverage crowns of posterior ETT exhibited favorable clinical outcomes. Ceramic fracture was the most common failure pattern.
Esta obra está dirigida a profesionales de la salud y a la comunidad en general, ya que trata sobre diferentes mitos en odontología los cuales han sido difundidos en nuestra sociedad a través del tiempo. Mediante una búsqueda sistematizada de la literatura en las principales bases de datos científicas, y desde su propia experiencia, los autores tratan de descubrir la verdad sobre estos temas y defender el sustento científico del quehacer odontológico diario.
¿Qué debemos saber del bruxismo?, ¿es bueno sacarse las llamadas “muelas del juicio”?, ¿hay que lavarse los dientes después de comer?, ¿qué no sabemos de la relación azúcar-caries?, ¿son mejores las carillas de resina o de cerámica?... aquí hay respuestas serias a temas que importan. Mejor leer estos nueve ensayos y discutirlos en confianza, porque existen muchos tratamientos innecesarios e incluso dañinos, así como prácticas y señales que deberían alertarnos antes y más que el sonido del taladro en la sala de espera.
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