• Proceedings of the KACD Conference
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• 2003.05a
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• pp.288-288
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• 2003

1960년대 중반부터 도입된 구치부 복합레진 수복은 복합레진과 접착시스템의 향상된 물성 때문에 구치부 사용에 대한 주목할 만한 결과를 보고하고 있다. 현재는 다수의 1급, 2급 수복물에 복합레진이 적응증으로 기술되며, 사실상 미국치과의사 협회(ADA)도 초기와 중등과 크기의 병소를 보존적 I, II급 와동으로 형성된 뒤 복합레진으로 수복하는 시술의 적절성을 인정하고 있다. ADA는 "복합레진을 유치나 영구치의 I급, II급, V급 수복에 올바르게 적용하면 아발감의 수명에 뒤지지 않는다."라고 기술하고 있다. 이에 본 강연에서는 I급과 II급 복진레진 수복을 위한 관련된 재료들의 특성과 단점들을 극복하기 위한 노력들을 설명하고자 한다. 특히 중합수축과 관련된 문제점들을 해결하기 위해 제시되고 있는 방법들의 임상적 적용 가능성의 한계와 술후 과민증을 줄이기 위한 방법, 그리고 구치부에 적용된 레진들의 마모를 줄일 수 있는 방법들을 모색하고 한다. 더불어 구치부 복합레진 수복을 위한 임상 시술 시 가장 흔하게 발생되는 단조로운 인접면 외형 형성 및 접촉점 개방의 문제점을 인식하고 이를 막기 위한 노력 및 기구들의 사용 조작에 대해 토의해 보고자 한다.

• Journal of Dental Rehabilitation and Applied Science
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• v.38 no.1
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• pp.60-68
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• 2022

A patient with severe periodontitis has causative factors that cause pathological tooth movement, the occlusion is disintegrated, and the vicious cycle of worsening periodontitis is repeated. In particular, when pathological tooth movement occurs in the maxillary anterior region, the patient has an aesthetic sense of atrophy, and the quality of life was reduced. Therefore, when orthodontic treatment was added to patients with severe periodontitis, it promotes the formation of new bone, reduces periodontal cysts, and obtains clinical attachment, which leads to favorable results in prosthetic restoration, thereby enabling ideal occlusion, function and aesthetics. Periodontal treatment, orthodontic treatment, natural tooth restoration, and implant prosthesis were planned for patients with pathological tooth movement in the anterior region due to loss of occlusal support in the posterior region. As a result, an ideal restoration space was secured, a stable restoration of occlusal contact was formed, and the maxillary anterior teeth were aesthetically improved.

• Restorative Dentistry and Endodontics
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• v.31 no.6
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• pp.460-469
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• 2006

This article complies a survey on the replacement of the posterior restorations and accesses possible factors that influence the replacement of posterior restorations. The data was collected from patients that visited department of conservative dentistry from Dec 1st 2003, to Sep 3rd 2004. Teeth was restricted to posterior permanent teeth. 9 dentists recorded age, gender of patients, tooth location, cavity farm and restorative material. They rated marginal adaptation, anatomic form, secondary caries of old restoration by modified Ryge criteria system. The statistical analysis was performed with Chi square test (p < 0.05) for replacement ratio according to patients, tooth factor and One way ANOVA was performed for comparison of old restoration according to restorative material. The results were as follows; 1. The female (62%) was statistically higher ratio than the male (38%). 2. The distribution of replacement case according to age, the rate of replacement was in descending order, 20's (38.3%), 40's (16.8%), 30's (15.9%), 10's (11.1%), 50's (9.2%), 60's (8.7%). 3. The rate of replacement was 88% for molar and 12% for premolar (p $gt; 0.05). 4. The rate of replacement was 39% for maxillar and 61% for mandible (p $gt; 0.05). 5. The material of restorations was amalgam (69%), gold inlay (17%), composite resin (13%). 6. In rating system by modified Ryge criteria system on margin adaptation, there was statistically significant difference between amalgam and gold inlay. But on anatomic form and caries, there was no statistically significant difference among the material of restorations.

• The Journal of the Korean dental association
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• v.58 no.7
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• pp.435-442
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• 2020

Porcelain is the first ceramic material to be introduced into dentistry. Porcelain jacket crown was introduced by Dr. Charles H Land in 1886, which was an excellent aesthetic dental restoration but has not been widely used due to high firing shrinkage and low tensile strength. Then metal-ceramic system, which combines the esthetic properties of ceramics and the mechanical properties of metals, was introduced and nowadays it is still used in dental clinical field. However, the metal-ceramic system has shown some problems, such as increased lightness by reflection of light at opaque layer, shadow beneath the gingival line due to the block-out of light by metal coping, exposure of metal in margin part, bond failure between metal and porcelain, oxidation of metal coping during firing the porcelain, etc. Recently, along with the advance of fabrication methods of dental ceramics, the all-ceramic restorations with high esthetic and mechanical properties has increased and gradually replaced metal-ceramic restorations. Especially, CAD/CAM technology has opened a new era in fabricating the dental ceramic restorations. This overview will take a look at the past, present and future possibility of the dental ceramic materials.

• The Journal of the Korean dental association
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• v.34 no.12 s.331
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• pp.861-865
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• 1996

복합레진의 성질과 삽입기술에 대한 많은 개선들이 1970년대부터 이루어져 왔으며 많은 실험적 연구와 임상적 연구를 통해 제 1급 및 제 2급 와동에 적용가능한 다양한 복합레진이 개발되었다. 1980년대 초반부터 많은 제품들이 아말감이나 금수복물의 대용물로써 소개되고 있으며, 장기적인 임상연구에서 색깔의 안정성, 적은 미세파절, 감소된 마모도와 재발성 우식증의 감소등 좋은 개선점들이 알려졌으며, 교합접촉을 하지 않거나 거의 하지 않는 구치부 복합레진 수복에서 표면 상실이 거의 나타나지 않음이 관찰되었다. 그러나 많은 힘이 가해질 때 외형을 상실한다는 점이 아직도 가장 큰 문제점으로 남아있다.

• Restorative Dentistry and Endodontics
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• v.28 no.6
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• pp.467-474
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• 2003

복합레진에 의한 구치부 2급 와동의 수복에서 치은부 변연이 법랑-백아 경계 하방에 위치하는 경우 복합레진의 중합 수축에 의한 응력은 변연부의 폐쇄능력을 저하시키고 이로인한 미세누출은 2차적인 우식이나 술후과민증을 일으켜 임상에서의 성공을 위협한다. 본 연구에서는 2급 와동에서 복합레진으로 수복하기 전에 치은 변연부를 중합수축에 의한 응력을 완화시킬 수 있는 것으로 알려진 몇가지 재료들을 중간층으로 먼저 충전한 후 충전용 복합레진으로 충전한 뒤 치은부 변연에서 이들 중간층과 치질 사이의 미세누출의 정도를 비교하였다. 20개의 발거된 구치의 근, 원심면에 각각 상자 모양의 2급 와동을 형성하고 40개의 와동을 무작위로 10개씩, 4개의군으로 나누었다. 1군은 중간층의 수복없이 Clearfil SE Bond과 Clearfil AP-X로 충전하였으며 2, 3 및 4군은 중간층으로 각각 Revolution, Dyract그리고 FujiII LG를 먼저 충전한 후 1군과 동일한 방법으로 복합레진을 충전하였다. 충전된 시편은 열순환후 2% methylene blue 용액에 12시간 침잠시킨 후 색소의 침투도를 stereomicroscope로 관찰하였으며 실험결과는 Kruskal-Wallis non-parametric independent analysis 및 Mann-Whitney U test로 통계분석하여 다음의 결론을 얻었다. 1. 레진강화형 글라스아이오노머를 중간층으로 먼저 수복하고 복합레진으로 충전한 경우에서 더 적은 미세누출을 보였다(p<0.05). 2. 유동성 레진과 콤포머를 중간층으로 수복한 경우와 복합레진만으로 수복한 경우는 미세누출에 있어서 유의한 차이를 나타내지 않았다(p>0.05).

• The Journal of Korean Academy of Prosthodontics
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• v.55 no.2
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• pp.205-211
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• 2017

Loss of posterior support may cause extrusion of antagonistic teeth and excessive wear of remaining teeth which often leads to the destruction of the occlusal plane. In such cases, it is critical to verify the need to increase vertical dimension of occlusion (VDO). Should you increase VDO, provisionalization is crucial in evaluating function and esthetics. Double scanning technique is a useful method when fabricating definitive restoration that mimic provisional restoration. In this case, a patient with apparently no loss of VDO and insufficient interocclusal space for dental materials due to loss of posterior support and extrusion of antagonistic teeth was rehabilitated using double scanning technique.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.1
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• pp.91-95
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• 2009

The use of stainless steel crowns are indicated for restoration of primary or permanent molars with proximal dental caries, extensive dental caries, or previous pulp treatment with increased danger of tooth fracture. Stainless steel crowns were introduced by Humphrey in 1950. For their improved durability, longevity, and success rate, they have been strongly considered for restoring extensive and multi-surfaced dental caries of molars in pediatric dentistry. However, they also have shortcomings, such as possibility of pulpal exposure or damaging proximal surface of adjacent teeth. In addition, when oversized stainless steel crowns are used, eruption of the adjacent permanent teeth may be disturbed by their prominent margin. As a means to compensate the shortcomings of stainless steel crowns, use of orthodontics bands may be considered. It is an alternative restoration method, where an orthodontic band is placed on a tooth first and cavity is restored with filling material, such as composite resin, glass ionomer, or amalgam. The use of an orthodontic band is indicated for molar restoration with cervical dental caries, extensive dental caries, enamel hypoplasia, or previous pulp treatment. Because it requires shorter chair time compared to stainless steel crown, its application is very useful for children with poor behavior. However, restoration using an orthodontic band requires good oral hygiene after its application. This case report illustrates the conservative restoration of primary molars and permanent molars with extensive dental caries using orthodontic bands.

• The Journal of Korean Academy of Prosthodontics
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• v.58 no.2
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• pp.153-160
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• 2020

Gradual tooth wear is a natural process of aging, but pathological wear over physiologic ranges leads to functional and esthetic problems. The loss of posterior support may cause pathological wear of anterior teeth, which results in reduction of vertical dimension and disharmony of occlusal plane. To solve this problem, determination of proper vertical dimension considering centric relation is necessary. This case report presented 71-year-old male, who had the severe wear of lower anterior teeth due to loss of posterior support. By meticulous evaluation, a full mouth rehabilitation with elevation of vertical dimension was planned. After 8 months of follow-up, stable occlusal scheme is maintained and patient was satisfied with clinical outcome functionally and esthetically.

• The Journal of Korean Academy of Prosthodontics
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• v.61 no.4
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• pp.284-292
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• 2023

Stable posterior occlusal support is crucial for adequate masticatory function and facial aesthetics. In elderly patients over the age of 65, masticatory ability has a significant impact on nutritional intake and overall health. This case report presents a prosthetic treatment of an elderly patient with edentulous maxilla and bilateral posterior edentulous mandible. The upper jaw was restored with a complete denture to establish an ideal occlusal plane, and the three-dimensional positions of the mandibular implants were determined accordingly. The implants were placed through computer-guided implant surgery and were immediately loaded with fixed provisional restorations. The implant-fixed zirconia final restorations were inserted in the lower posterior region, and the occlusal surface of posterior artificial teeth in the upper denture was substituted with cobalt-chrome alloy to resist occlusal wear. The patient's posterior occlusal support and masticatory function were promptly restored through this treatment process, and long-term stability against wear was also obtained.