• Restorative Dentistry and Endodontics
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• v.35 no.2
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• pp.116-124
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• 2010

This study aimed to assess whether the gender of the dental practitioner affects operative techniques in class 2 and class 5 resin composite restorations. In 2008, a nationwide survey was given to Korean dentists. Total 12,193 e-mails were distributed, 2,632 were opened by recipients, and 840 responses were collected. Of the respondents, 78.9% were male and 21.1% were female. The gender distribution in the age groups between respondents and the total population did not differ (p > 0.05). A chi-square test was used to compare technical differences between female and male dentists. A multiple logistic regression analysis was performed to assess the association between gender and operative techniques in resin composite restoration. For class 2 resin composite restoration, female dentists were 1.87 times more likely than male dentists to do multiple incremental fillings (four layers or more) and 2.72 times more likely than males to spend 30 minutes or more for the treatment (p < 0.05). For class 5 resin composite restoration, female dentists were 2.69 times more likely than their male counterparts to use a cavity base or liner, 1.83 times more likely to do multiple incremental fillings (four layers or more) and 1.63 times more likely to spend 20 minutes or more for the procedure (p < 0.05). The gender factor was influential to individual operative techniques in restorative treatment.

• Journal of the Korean Academy of Esthetic Dentistry
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• v.21 no.1
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• pp.4-22
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• 2012

치경부에 발생된 병소 부위(cervical lesion)는 "우식성 병소(caries lesion)"와 "비우식성 병소(non-caries lesion)"로 분류할 수 있다. 우식성 병소는 구강 내 세균들의 활동에 기인하여 발생된 병소로서 경조직 손상 부위의 수복과 함께 우식이 재발하지 않도록 체계적으로 대응하는 것이 필요하다. 비우식성 병소는 산성 물질, 저작력 및 이물질에 의한 마모 작용과 같은 다양한 원인에 의해 발생될 수 있으며, 수복 치료에 앞서 병소에 발생 원인을 규명하는 것이 중요하다. 먼저 병소 유발 원인에 대한 분석과 이에 대한 적절한 조치를 취한 후에 수복 치료를 시행하는 것이 바람직하다. 심미적인 요구가 높은 치경부 병소의 수복을 위하여 사용될 수 있는 재료는 "불소를 방출하는 재료"와 "불소를 방출하지 않는 재료"로 나뉘어지는데, 세균의 활동에 의해 형성된 우식성 병소의 수복에는 불소를 방출하는 재료를 사용하는 것이 추천된다. 우수한 심미성과 보다 강력한 유지력이 요구되는 경우에는 복합 레진계 수복 재료들을 사용하여 수복하게 되는데, 이 경우에는 "접착 술식(bonding procedure)"이 중요한 역할을 수행하게 된다. "접착 술식"은 수복물의 일차적인 유지 뿐 아니라 지각과민을 해소하고 2차 우식을 방지하며, 궁극적으로 수복물의 수명을 좌우하는 결정적인 역할을 수행한다. 자연 치아를 최대한 보존하고자 하는 "최소침습(minimum intervention)" 개념에 바탕을 두고 세심하게 형성된 와동에 각각의 증례에 최적화된 수복 재료를 선택하여 수복치료를 시행한다면 보다 심미적이고 환자가 편안한 치경부 수복물을 완성할 수 있을 것이다.

• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.2
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• pp.240-247
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• 1999

Primary anterior teeth requiring extensive restorative therapy due to caries, trauma or developmental defects can present a particularly challenging problem for the pediatric dentist. The ideal restorative technique would combine strength, durability esthetics and efficiency in placement. Couple these concerns with the technical difficulties of operating on children with behavior management problems, and the dentist is left with the difficult task of choosing from a variety of restorative options. Restorative modalities currently in use to treat primary anterior teeth include bonding with composite resin as in celluloid strip crowns, conventional stainless steel crowns, open-faced stainless steel crowns, commercially and chairside veneered stainless steel crowns and epoxy-coated stainless steel crowns. Each of these techniques presents technical, functional or esthetic compromises that complicate their efficient and effective usage. This is a report of the results obtained at the Department of Pediatric Dentistry, College of Dentistry Seoul National University, through the use of these various methods of treating primary anterior teeth.

• Journal of Dental Rehabilitation and Applied Science
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• v.24 no.3
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• pp.243-251
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• 2008

A subgingival crown-root fracture presents a restorative problem to the clinician because restoration is complicated by the need to maintain the sound tooth structures. Forced eruption offers a method of treatment of teeth fractured close to the alveolar crest. Extrusion of such teeth allows elevating the fracture line above the epitherial attachment and so the proper finishing margins can be prepared. The purpose of this case is to report successful tooth restoration using forced eruption in case of crown-root fractures.

• 대한치과보철학회:학술대회논문집
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• 1997.11a
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• pp.22-22
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• 1997

• The Journal of the Korean dental association
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• v.42 no.1 s.416
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• pp.24-31
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• 2004

• Journal of the korean academy of Pediatric Dentistry
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• v.29 no.4
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• pp.519-528
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• 2002

It is not a rare occasion that certain dental procedures involving tooth reduction being peformed under inadequate water cooling due to a variety of reasons. This situation could possibly inflict the critical insult to the pulpal tissue of indicated tooth. The purpose of this experiment was to study the pattern of diffusion of external heat produced during routine dental procedures into the pulpal tissue. 30 stone blocks containing three lower second primary molars were used for certain restorative procedures and the temperature of the indicated tooth surface was measured by thermography(Inframetrics 600) and further used as a baseline data for the finite element analysis model fabrication designed in order to evaluate the pattern of thermal diffusion. The ranges of highest surface temperature measured from several dental procedures under water cooling and non-water cooling were $30.8^{\circ}C{\sim}43.6^{\circ}C$ and $51.2^{\circ}C{\sim}103.4^{\circ}C$ respectively. Among procedures studied, crown preparation showed the highest value and amalgam removal showed the lowest. Comparisons between data measured under water cooling and non-water cooling conditions have shown the statistically significant difference(p<0.05). All the non-cooling conditions have shown the relatively larger increment of temperature change at the pulp horn area than the cooling conditions. The results of this study strongly indicate that the water coolant is the essential element in restorative procedures for the maintenance of healthy pulp. Further related studies involving more procedures and conditions are recommended.

• 대한치주과학회:학술대회논문집
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• 1998.11a
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• pp.67-68
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• 1998

• The Journal of the Korean dental association
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• v.34 no.12 s.331
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• pp.855-860
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• 1996

치과용 복합레진은 bis GMA형의 monomer가 개발되고, 무기 filler가 첨가되어 물리적인 성질이 더욱 향상되었으며, 또한 법랑질에 대한 산부식법을 통하여 치아에 대한 결합력을 높을 수 있는 방법이 도입되면서 치과용 수복물로서 각광을 받아 왔다. 특히 복합레진은 이전까지 이용되었던 silicate cement 이나 acrylic resin에 비하여 변색이 적고, 원래의 형태를 비교적 잘 유지하는 장점을 가져서 전치부의 수복에 유용한 재료로 인식되었다. 복합레진을 이용한 전치부의 수복은 비교적 적은 치질의 삭제만으로도 가능하고, 심미적으로도 우수한 결과를 보이고 있어서 올바른 술식을 통하여 적절히 이용한다면 좋은 임상적인 결과를 얻을 수 있는 것이 사실이지만 재료학적인 한계가 아직 까지는 엄연히 존재한다. 복합레진을 이용한 전치부의 수복에 있어서, 복합레진의 문제점과 이를 줄이기 위한 방법, 임상시의 주의점 등에 관해 살펴보도록 한다.

• Journal of Dental Rehabilitation and Applied Science
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• v.36 no.4
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• pp.262-271
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• 2020

To restore a tooth with a fracture line extending below the marginal bone level, a surgical crown lengthening procedure accompanied by ostectomy could be considered to expose the fracture line and reestablish the biologic width. However, this procedure could lead to esthetic failure, especially in the anterior teeth. Therefore, orthodontic extrusion, which elevates the fracture line from within the alveolar socket without sacrificing the supporting bone and gingiva, is recommended. This technique allows for the proper placement of the crown on a sound tooth structure, with the reestablishment of the biologic width. Alternatively, surgical extrusion is an one-step procedure that is simpler and less time-consuming than orthodontic extrusion; placing and adjusting the orthodontic appliance does not require multiple visits. This study presents successful restoration in 2 cases with a crown-tooth root fracture of the maxillary central incisor treated using a multidisciplinary approach through orthodontic extrusion or surgical extrusion followed by successful restoration.