• 제목/요약/키워드: indirect restoration

검색결과 82건 처리시간 0.02초

범용 상아질 접착제에 따른 간접 수복물의 교합 변화 (Changes in occlusion of indirect restorations according to universal adhesives)

  • 변지은
    • 대한치과의료관리학회지
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    • 제9권1호
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    • pp.7-13
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    • 2021
  • The present randomized controlled trial aimed to evaluate changes in occlusion of indirect restorations before and after attachment using resin cement according to universal adhesives. This study included patients who underwent indirect restoration treatment at the Yonsei University Dental Hospital between April and October 2016. Universal adhesives requiring light curing and those not requiring light curing were used in this study. Changes in occlusion before and after adhesion of the indirect restoration were evaluated using articulating paper and shimstock as well as through the discomfort felt by the patients. To analyze the differences between the universal adhesive, Fisher's exact tests were performed using SPSS ver. 22.0 software. Of the 39 cases of indirect restoration, 29 were included in the study. A change in occlusion after adhesion of the indirect restoration was observed in only one case of universal adhesive that required light curing. The patient felt that the occlusion increased after the attachment of the restoration, and it was observed that the occlusion point was different from that before attachment. However, the results of the analysis were not statistically significant. Based on the findings, the universal adhesives did not affect the occlusion before and after indirect adhesion restoration using RelyX Ultimate.

임상가를 위한 특집 1 - 간접 복합레진 수복의 이론과 실제 (Indirect Composite Restoration)

  • 황인남;장지현
    • 대한치과의사협회지
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    • 제50권7호
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    • pp.368-376
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    • 2012
  • The demand for tooth-colored restorations has grown considerably during the last decade. Posterior composite restorations have risen in popularity as a result of the development of improved resin composites, bonding systems and operating techniques. A major limitation of direct composite restoration is the difficulty of controlling the polymerization shrinkage. To overcome this limitation, the indirect fabrication of a composite restoration and cementation with resin cement has been advocated. Unfortunately, the current available resin cements with indirect restorations do not always bond to dentin as strongly as dentin adhesive systems bond with direct resin composite restorations. Several procedural strategies have been proposed for indirect composite restoration. In this regard, the rationale for the indication, characteristics and clinical application is described in this paper. As a result, we will try to suggest the evidence-based guidelines for indirect composite restorations by reviewing each available indirect composite products, technical procedure and pronosis.

Cementation technique in indirect tooth colored restoration

  • Park, Sung-Ho
    • 대한치과보존학회:학술대회논문집
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    • 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
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    • pp.595-595
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    • 2001
  • As the interest for esthetic restoration is increasing, the usage of composite resin is increasing. The usage of composite resin is not limited to anterior teeth but is spreading to posterior area using direct & indirect methods. Generally, dual or chemical cure resin cement has been used for setting composite or porcelain inlay restoration. However, chemical cure resin cement has limited working time and it's difficult to remove excess cement from the tooth and the restoration. The dual cured composite is also difficult to remove from the tooth surface.(omitted)

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Indirect short resin post Crown을 이용한 유전치부 심미수복 (ESTHETHIC RESTORATION OF PRIMARY ANTERIOR TEETH BY INDIRECT SHORT RESIN POST CROWN : CASE REPORT)

  • 김효석;한국재;이창섭;이상호
    • 대한소아치과학회지
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    • 제25권3호
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    • pp.627-634
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    • 1998
  • Children who have severely destructive anterior primary dentition, as in nursing-bottle caries, in trauma, in rampant caries and in developmental defects, present the dentist with one of the most perplexing situations in dentistry. Especially, children with managed behavor difficultly is very severly situations. This paper reported a new technique for the utilization of resin post and strip crown to indirect methods on severely destructive primary anterior teeth. We name it "indirect short resin post crown" in this paper. Indirect technique be considered to be a simple, a retentive, intensive, color-stable and esthetic restoration.

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Wear resistance of indirect composite resins used for provisional restorations supported by implants

  • Tsujimoto, Akimasa;Jurado, Carlos;Villalobos-Tinoco, Jose;Barkmeier, Wayne;Fischer, Nicholas;Takamizawa, Toshiki;Latta, Mark;Miyazaki, Masashi
    • The Journal of Advanced Prosthodontics
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    • 제11권4호
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    • pp.232-238
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    • 2019
  • PURPOSE. The aim of this study was to investigate simulated localized and generalized wear of indirect composite resins used for implant supported provisional restorations. MATERIALS AND METHODS. The study investigated ten indirect composite resins. Two kinds of wear were simulated by 400,000 cycles in a Leinfelder-Suzuki (Alabama) machine. Localized wear was simulated with a stainless-steel ball bearing antagonist and generalized with a flat-ended stainless-steel cylinder antagonist. The tests were carried out in water slurry of polymethyl methacrylate beads. Wear was measured using a Proscan 2100 noncontact profilometer in conjunction with Proscan and AnSur 3D software. RESULTS. Both localized and generalized wear were significantly different (P<.05) among the indirect composite resins. SR Nexco and Gradia Plus showed significantly less wear than the other indirect composite resins. The rank order of wear was same in both types of wear simulation. CONCLUSION. Indirect composite resins are recommended when a provisional implant-supported restoration is required to function in place over a long period. Although only some indirect composite resins showed similar wear resistance to CAD/CAM composite resins, the wear resistance of all the indirect composite resins was higher than that of bis-acryl base provisional and polymethyl methacrylate resins.

A CAD/CAM-based strategy for concurrent endodontic and restorative treatment

  • Escobar, Patricia Maria;Kishen, Anil;Lopes, Fabiane Carneiro;Borges, Caroline Cristina;Kegler, Eugenio Gabriel;Sousa-Neto, Manoel Damiao
    • Restorative Dentistry and Endodontics
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    • 제44권3호
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    • pp.27.1-27.12
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    • 2019
  • This case report describes a technique in which endodontic treatment and permanent indirect restoration were completed in the same clinical appointment with the aid of a computer-aided design/computer-aided manufacturing (CAD/CAM) system. Two patients were diagnosed with irreversible pulpitis of the mandibular first molar. After access preparation, root canals were located, irrigation was performed until bleeding ceased, and the coronal tooth structure was prepared for indirect restoration. Then, utilizing an interim 3-mm build-up of the endodontic access cavity, a hemi-arch digital scan was performed with an intraoral scanner. Subsequent to digital scanning, restoration design was performed simultaneously with the endodontic procedure. The root canals were shaped using the Race system under irrigation with 2.5% sodium hypochlorite followed by root canal filling. The pulp chamber was subsequently filled with a 3-mm-thick composite resin restoration mimicking the interim build-up previously utilized to facilitate block milling in the CAD/CAM system. Clinical try-in of the permanent onlay restoration was followed by acid etching, application of a 5th generation adhesive, and cementation of the indirect restoration. Once the restoration was cemented, rubber dam isolation was removed, followed by occlusal adjustment and polishing. After 2 years of follow-up, the restorations were esthetically and functionally satisfactory, without complications.

직접법과 간접법으로 수복한 복합레진의 1년간의 임상적인 평가 (1 YEAR FOLLOW-UP STUDY OF DIRECT AND INDIRECT COMPOSITE RESTORATIONS)

  • 박성호
    • Restorative Dentistry and Endodontics
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    • 제27권3호
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    • pp.284-289
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    • 2002
  • Background : The purpose of the present study was to evaluate the direct and indirect composite restorations which had been placed for 1 year Methods : The composite restorations which had been placed between 1999. Mar and 1999, Dec was evaluated after 1 year For direct restorations. Spectrum (Dentsply, USA) and Z100 (3M, USA) were used in the anterior teeth and Surefil (Dentsply, USA) were used. For class V restorations of anterior and posterior teeth. Spectrum was used. For indirect restorations, Targis/Vectris system (Vivadent/Ivoclar, Liechtenstein) was used 2 examiners evaluated marginal quality, proximal contact. discoloration, presence of 2$^{nd}$ caries, loss of filling and hypersensitivity of restorations. The restorations was clinically evaluated by modified methods based on USPHS. Results : 60 teeth were evaluated. 59 were clinically acceptable and 1 restoration which was placed in class v cavity in the posterior tooth was fallen out. In most cases, the restorations were clinically accept-able. For restorations which had been directly placed in the class II cavities, loose proximal contact was indicated as the main complaints. Conclusions : Most of Anterior and posterior restorations which bad been directly or indirectly placed for 1 year were clinically acceptable. For posterior teeth, loose proximal contact was indicated as the main problem in the directly placed Class II restorations. Long term clinical study is needed.

문자 인식을 위한 영상 복원 (Image Restoration for Character Recognition)

  • 유석원
    • 문화기술의 융합
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    • 제4권3호
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    • pp.241-246
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    • 2018
  • 영상 기기의 기계적인 문제로 인해 실험 데이터에 발생한 잡음으로 인한 인식 오류를 최소화하기 위해서 영상복원 과정을 거친다. 영상 복원 방법은 실험 데이터를 구성하는 각각의 픽셀에 대해 Direct Neighbor와 Indirect Neighbor의 개수와 위치를 조사해서 잡음을 해결한다. 결과적으로, 영상 복원 과정을 통해 실험 데이터에 발생한 잡음을 최대한 제거하고, 영역 단위로 학습 데이터와 실험 데이터의 차이를 계산해서 잡음에 의한 인식 오류 가능성을 낮춤으로써 만족할만한 인식 결과를 얻을 수 있다.

TARGIS & VECTRIS SYSTEM을 이용한 심미적 수복 (Esthetic Restoration Using Targis & Vectris System)

  • 최현식;황정원;신상완;서규원
    • 대한심미치과학회지
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    • 제7권1호
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    • pp.18-26
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    • 1998
  • The improvement of esthetic dentistry has been accelerated from the development of composite resin and dentin-enamel adhesive since 1980's. The indirect composite resin restorations have more accurate proximal contact point and occlusal form than direct restoration. And the side effect of resin shrinkage is minimal because the amount of composite used in oral cavity is limited in cement space. As a results, marginal leakage, hypersensitivity, secondary caries, and discoloration are significantly diminished. The first generation laboratory composite resin used in indirect resin restoration had been widespread in 1980's and the second generation laboratory composite resins were developed in 1990's. The second generation laboratory composite resins are called Ceramic Polymer. The physical properties of Ceramic Polymer are improved because of high content of inorganic filler, and the esthetics and biocompatibility are better than that of the first generation resin. So the application range using composite resin have been broadened. The purpose of this paper is to introduce Targis & Vectris system that is classified to second generation laboratory composite and to report several cases in which the system was utilized for restoration.

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Preparation and problem solving in indirect esthetic restorations

  • Choi, Kyoung-Kyu
    • 대한치과보존학회:학술대회논문집
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    • 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
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    • pp.594-594
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    • 2001
  • Increased demand for esthetic restorations has promoted a growing interest in tooth-colored restorations even in the posterior regions. Preparation for specific types of indirect inlay and onlays may vary because of differences in fabrication steps for each commercial system and variations in the physical properties of the restorative materials. Preparations for indirect inlay/onlay basically are meant to provide adequate thickness for restorative material and at the same time a passive insertion pattern with rounded internal angles and well defined margins after deciding what type of restoration is indicated.(omitted)

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