• 대한심미치과학회지
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• 제21권1호
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• pp.51-60
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• 2012

• 대한심미치과학회지
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• 제14권1호
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• pp.7-13
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• 2005

• 대한치과의사협회지
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• 제54권1호
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• pp.8-15
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• 2016

To improve esthetics and gain beautiful smile, the maxillary anterior dentition is crucial. Through alteration of height, arrangement or color of the maxillary incisor, we can rehabilitate the esthetic smile. The perception of dental esthetics is highly subjective. Personal perceptions or judgement of dental esthetics is highly related with each individual's experience and social and cultural environment. However, there have been many efforts to establish the criteria for generally accepted esthetic norm, in order to increase the predictability of restorative treatment. For maxillary anterior restoration, not only a single tooth, but also the compositions around tooth such as facial form, lips and gum and their relationships have to be considered to create harmonious smile. It can be determined as esthetic restorations when in consonance with facial form and structures that frame the restorations. In this review article, several guidelines that are generally accepted and useful to assess the esthetics and communicate with patients and technicians will be discussed.

• 대한심미치과학회지
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• 제23권2호
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• pp.86-94
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• 2014

In recent years, perhaps the biggest driver in new material development is the desire to improve crown and bridge esthetics compared to the traditional PFM or all-metal restorations. As such, zirconia, leucite-containing glass ceramic and lithium disilicate glass ceramic have become prominent in the dental practice. Each material type performs differently regarding strength, toughness, ease of machining and the final preparation of the material prior to placement. For example, glass ceramic are typically weaker materials which limits its use to single-unit restorations. On the other hand, zirconia has a high fracture toughness which enables multi-unit restorations. This material requires a long sintering procedure which excludes its use for fast chair side production. Developed hybrid material of CAD/CAM is contained nano ceramic elements. This new material, called a Resin Nano Ceramic is unique in durability and function. The material is not a resin or composite. It is also not a pure ceramic. The material is a mixture of both and consists of ceramic. Like a composite, the material is not brittle and is fracture resistant. Like a glass ceramic, the material has excellent polish retention for lasting esthetics. The material is easily machined chair side or in a dental lab, polishes quickly to an esthetic finish and if necessary, can be useful restoratives.

• 대한치과보철학회지
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• 제38권6호
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• pp.821-828
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• 2000

Metal - ceramic restorations have been the standard of fixed oral rehabilitation for over 30 years, and while many advances have been made in materials and research, the esthetic challenges of the light reflective metal substructure will always put clinician in an esthetic dilemma, for only a very talented ceramist / dentist team can create esthetics that rival nature on a repeatable basis. All ceramic restorations have also been a choice in our restorative armamentarium, but in the past, the materials have also had their own limitation, number on being question-able strength to withstand occlusal forces generated during mastication. IPS Empress 2 offers dentistry a metal free alternative to traditional restorative techniques. This clinical report describes the treatment of patients with esthetic problem of anterior dentition using Empress 2 system.

• 대한치과기공학회지
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• 제31권2호
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• pp.45-52
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• 2009

Esthetic restorations have been widely used in dental practice, although many studies have focused on the development and improvement of all ceramic restorations. The success of esthetic restorations depends primarily on an optimal bond strength between various veneered ceramics and core materials for esthetic restorations. The purpose of this study was to compare the shear bond strength between various veneered ceramics and core materials for esthetic restorations. 30 metal cores and 20 zirconia cores were fabricated and divided into five groups according to veneered ceramic materials such as Creation porcelain powder, Cercon Ceram Kiss, and IPS e.max ZirPress. Thirty spacimens were prepared using Creation porcelain powder, veneered 3mm height and 3mm in diameter, over the metal cores (n=10). Twenty specimens were prepared using Cercon Ceram Kiss and Zirpress, veneered 3mm height and 3mm in diameter, over the zirconia cores (n=10). The shear bond strength test was performed in a universal testing machine with a crosshead speed of 1mm/min. Ultimate shear bond strength data were analyzed with One-way ANOVA and the Scheffe's test (p=.05). Within the limits of this study, the following conclusions were drawn: The mean shear bond strengths (MPa) were: 18.44 for Uni metal VH/Creation (NCUC); 18.72 for Heraenium/Creation (NCHC); 16.23 for Wirobond C/Creation (NCWC); 13.88 for Zirconia core/$110{\mu}m$ $Al_2O_3$ sandblasting/Cercon Ceram Kiss (ZS110P); 14.61 for Zirconia core/No surface treatment/IPS e.max ZirPress (ZNTH). The mean shear bond strength for NCUC (Uni metal VH/Creation), NCHC (Heraenium/Creation) and NCWC (Wirobond C/Creation) were significantly superior to ZS110P (Zirconia core/$110{\mu}m$ $Al_2O_3$ sandblasting/Cercon Ceram Kiss) and ZNTH(Zirconia core/No surface treatment/IPS e.max ZirPress) (p<0.05).

• 대한치과보철학회:학술대회논문집
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• 대한치과보철학회 1999년도 창립 40주년 기념 추계학술대회
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• pp.105-105
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• 1999

• 대한심미치과학회지
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• 제28권1호
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• pp.42-53
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• 2019

성공적인 전치부 심미 보철물이라면 다음의 몇가지 조건들이 충족되어야 한다고 생각한다. 환자의 안모와 조화, 치아와 치주 조직간의 조화, 주변 치아들과의 연속성등이 바로 그것이다. 하지만 보철물을 제작하는 기공과정에서는 치과 기공사가 환자를 직접 만나지 않고 모델 상에서 작업을 하기 때문에 제한된 정보 내에서 자신의 지식과 기술에 의존하여 보철물을 제작할 수 밖에 없다. 이 글에서는 전치부 심미보철 모델에서 제작할 때 필자가 치과기공사로서 생각하고 있는 생물학적 기준과 치주환경을 고려한 보철물 형태와 이를 부여하는 방법들을 증례를 통해 논해 보기로 한다.

• 대한심미치과학회지
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• 제13권2호
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• pp.13-24
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• 2004

In everyday dental practice, one of the most important procedures is fixed prosthodontics which includes gold and ceramic restorative treatments. This procedure can be divided into tooth preparation, impression taking, laboratory work, occlusal adjustment and cementation. The first step is tooth preparation and it needs not only good techniques but also deep knowledge and understanding of oral biology. Also, there must be good knowledge of the principles and materials of the procedure. The patient's satisfaction can be achieved from natural contour, good shade, and precise margin fit, especially in ceramic restorations on anterior regions. It is essential to fastidiously prepare the tooth to make aesthetic restorations with a good margin fit. Tooth preparation techniques and three case reports of ceramic restorations on the anterior region are presented and discussed in this paper.

• 대한심미치과학회지
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• 제8권1호
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• pp.76-82
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• 1999

Zinc phosphate cement has long been the material of choice for permanent luting of cast restorations, and through many years of use has been considered effective to retain castings. However, cast restorations cemented with this material have been susceptible to secondary caries. Glass ionomer luting agents become available in the late 1970s. These material s, through release of fluoride, show considerable promise as a means of reducing secondary caries. Other favorable traits include significantly less disintegration in vivo than zinc phosphate cements, a film thickness comparable to that of zinc phosphate cement, and adhesion to tooth structure. Compomer materials were created in 1993 as a filling material for deciduous teeth, cervical lesions, and class III cavities. In the meantime, compomer have been developed as chemical hardening cements for cast gold restorations. The aim of this paper is to review the articles on luting cements to help the choice of dental cements.