• 대한심미치과학회지
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• 제27권1호
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• pp.51-61
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• 2018

치과 임상에서 임시치아 제작은 중요한 과정 중 하나이지만 이를 별로 신경 쓰지 않는 임상가도 있다. 대다수 임시치아는 말 그대로 잠시 쓰는 것이기에 빠르고 저렴하게 만들면 된다는 생각이 더 많을 것이다. 시대가 변화하면서 빠르고 비교적 간편하게 만들 수 있는 치과용 CAD/CAM이 보급됨에 따라, 점차 임시치아 제작도 디지털화 되고 있다. 편한 것도 좋지만 무엇이든지 장단점이 존재한다. 이 글에서는 지금이 마지막 세대일 것 같은 '아나로그식 심미적인 전치부 임시치아 제작법'에 대해 살펴보고자 한다.

• 한국산업융합학회 논문집
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• 제24권3호
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• pp.373-376
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• 2021

Tested the flexural strength and maximum load of two types of dental 3 D printed temporary tooth materials of the DLP method. The average flexural strength was 206.98 MPa in the test group and 139.77 MPa in the control group. The average flexural strength of the experimental group was 67.21 MPa higher than that of the control group. In the maximum load experiment, an average of 44.16N in the experimental group and 37.31N in the control group were measured. The average value of 6.85N was higher in the experimental group, and the durability of the artificial tooth restoration was improved.

• Journal of Yeungnam Medical Science
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• 제40권3호
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• pp.302-307
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• 2023

With recent developments in digital dentistry, research on techniques and materials for three-dimensional (3D) printing is actively underway. We report the clinical applications and outcomes of 3D printing of temporary crowns fabricated with polylactic acid (PLA) using a fused deposition modeling (FDM) printer. Five participants were recruited from among patients scheduled to be treated with a single full-coverage crown at a dental clinic in a university medical center from June to August 2022. We used 3D-printed crowns fabricated with PLA using an FDM printer as temporary crowns and were assessed for discomfort, fracture, and dislodging. The 3D-printed temporary crowns were maintained without fracture, dislodging, or discomfort until the permanent prosthesis was ready. The average time required for printing the temporary crowns was approximately 7 minutes. The 3D printing of temporary crowns with PLA using an FDM printer is a convenient process for dentists. However, these crowns have some limitations, such as rough surface texture and translucency; therefore, the 3D printing process should be improved to produce better prostheses.

• 대한치과보철학회지
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• 제41권5호
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• pp.656-673
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• 2003

Statement of problem : Long-term exposure of dental porcelain to saliva during temporary cementation of a porcelain-fused to metal (PFM) restoration could affect mechanical strength of dental porcelain if the restoration is refired. Purpose : This work was performed to verify the effect of water on the mechanical strength in aged dental porcelain. Material and method : 63 specimens(Vintage Metalbond opaque and opal powder) were distributed to three experimental groups ; non-water immersed control, immersed and pedried, and immersed and non-predired groups. The changes in flexural strength and fracture toughness after specimen refiring related to Fourier Transform Infrared (FT-IR) spectroscopy. Results : 1. The FT-IR reflectances assigned to molecular bonds of $H_2O$ were noted as significantly different between the first-fired group and three refired groups and between two water-immersed groups and control group after refiring(p<0.05). They were also significantly different between predried group and non-predried group after refiring(p<0.05) 2. For opal specimens, FT-IR absorbances for hydrogen bond of $H_2O$ and silanols were significantly higher in non-predried group than in predreid group(p<0.05). 3 Predried opal group showed the highest mean flexural strength(p<0.05). Non-predried group indicated higher mean flexural strength than control group(p<0.05). 4. The mean fracture toughness for predired group was higher than non-predried group(p<0.05). 5. The difference of leucite crystal size is noted between control group and water-immersed, predried group in scanning electron microscopic study(${\times}10000$).

• 구강회복응용과학지
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• 제36권4호
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• pp.272-281
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• 2020

영구치가 선천 결손된 아동에서 유치가 발거되면, 교정적으로 공간을 폐쇄하거나, 성장이 끝나고 임플란트 수복을 시행할 때까지 공간을 유지하게 된다. 그러나 점차 치조골은 위축되고, 향후 보철 수복을 어렵게 하거나 비심미적인 결과를 야기할 수 있으므로, 임상의는 결손 공간과 치조골의 유지 모두 고려해야 한다. 본 증례에는 2개의 하악 전치가 결손된 환아에서 교정용 골성 고정원을 이용한 임시 보철 수복을 시행한 증례이다. 2개의 골성 고정원을 치조정 2 - 3 mm 하방에 수평으로 식립하였으며, 강선이 삽입된 인공치로 고정하였다. 2년의 경과 관찰동안 치은 염증이나 골성 고정원의 탈락은 발생하지 않았다. 또한 방사선 평가에서 인접 치조골의 성장이 저해되지 않았으며, 치조골 폭경 역시 양호하게 유지되었다.

• 치위생과학회지
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• 제22권3호
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• pp.139-147
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• 2022

Background: Temporary crown resins are used prior to prosthesis placement, indicating the importance of aesthetics. The aim of this study was evaluate the color stability of various staining solutions according to the color of temporary crown resins using VITA Easyshade^Ⓡ V. Methods: The temporary crowns used were the powder-liquid type and included four shades. A total of 36 specimens were fabricated in the form of disks with a diameter of 1.8 mm and a depth of 2 mm. They were divided into four groups of nine each, and staining was performed for seven days by precipitation in 3 mL of three staining solutions composed of distilled water, black coffee, and red wine. Color and color stability evaluations were performed by a trained examiner using a digital spectrophotometer (VITA Easyshade^Ⓡ V). Color stability was analyzed using the ΔE value. Results: Because of the color stability evaluation using the ΔE value, the difference between three and seven days was significant in the specimen I and III groups (p<0.05). Further, post hoc analysis showed that the ΔE value of red wine was significant, indicating that the color stability in red wine was low. The ΔE values in group II between days three and seven were statistically significant (p<0.05). Post hoc analysis showed that distilled water, coffee, and wine had the highest ΔE values on day three. On day seven, the ΔE value for wine was significant, and the color stability was low. There was no significant difference in group IV according to the staining period and staining solution; therefore, color stability was high (p>0.05). Conclusion: This study showed that most temporary resin restorations exhibited color stability in the staining solution. The darker the color of the temporary resin restoration, the higher the color stability against extrinsic staining.

• 대한치과의사협회지
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• 제36권11호통권354호
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• pp.794-799
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• 1998

Many references report that abnormal diastema except temporary diastema existing in mixed dentition period is caused by maxilary heavy labial frenum, malocclusion, progressive periodontal disease, and loss of posterior teeth. We can diagnose patient as diastema caused by periodontal disease, especially, in case of accompanying progressively destructed anterior maxillary alveolar bone defect, and interseptal bone defect. We report Multiple disciplinary approach for diastema associated with periodontal disease. Periodontal treatment(Guided Tissue -Regeneration, alveoloplasty, bone graft), or thodontic treatment (space closure, redistribution), and the final proshodontic restoration for retention were used.

• 대한심미치과학회지
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• 제8권1호
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• pp.84-89
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• 1999

These days, Dental Technic has been contributed to make more delicating Dental Prosthesis Restoration for patient and dentist. Diagnostic wax-up and making Temporary Crown are emphasized as an important part of Dental Technic. Choosing suitable Material and working with various new Equipments like Microscope improve accuracy. Repeated practice by setting up an organized system gives better result. Also, Esthetic Prosthesis requires patient's appearance and personality as well as patient' age, sex, and shade so on. Moreover, the problem which occurs by the patient's oral condition ha to be discussed before taking final impression. At a time like this, Scientific-mind and Logical thought Ability should be considered the important issue for more progressive Dental Technic.

• 구강회복응용과학지
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• 제39권3호
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• pp.158-167
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• 2023

최근 치의학 분야에서 디지털 기술이 발달함에 따라 computer-aided design-computer-aided manufacturing (CAD/CAM)을 이용한 의치 제작 진료 단계의 변화를 가져왔다. CAD/CAM 기술을 이용한 의치 제작 방식은 제작기간과 내원 간격의 단축으로 임상적인 효율성과 편리함을 제공함과 동시에 기공을 단순화하여 오류 발생을 감소시켰다. 본 증례는 복잡한 병력과 신체적 장애를 가진 환자에게 기존의 임시의치를 디지털 방식으로 복제 및 출력하여 개인 트레이로 활용하였고, 부가중합형 실리콘 인상재로 채득한 최종 인상체에는 수직고경과 중심위, 상악 전치부의 각도 및 길이에 대한 정보가 포함되어 있으며 이를 통해 제작 기간과 내원 간격을 단축하여 환자의 만족도를 높일 수 있었다. 최종 의치는 밀링 방식 및 monolithic disc를 이용하여 제작하였고, 적절한 안정과 유지, 지지를 보여 기능적, 심미적으로 만족스러운 결과를 얻을 수 있었다.

• 대한치과보철학회지
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• 제61권1호
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• pp.26-32
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• 2023

활동이 많은 소아 청소년 시기에는 치아의 외상이 흔하게 발생한다. 그 중 탈구로 인해 유착이 일어날 경우 임상검사를 통한 진단이 중요하며 성인이 된 후 심미적인 보철 수복을 위해서는 진단에 따른 치료가 중요하다. 본 증례는 외상으로 인해 유착된 치아를 치관절제술과 임플란트 식립을 통한 상악 전치부 심미 보철 수복 증례이다. 치관절제술 후 치관을 이용하여 보철 수복을 위한 공간 유지를 시행하였다. 성인이 된 후 guide surgery를 이용하여 정교한 임플란트 식립과 심미적인 보철 수복을 가능하게 하였으며, 상악 전치부임을 고려하여 원발성 안정성(primary stability) 확인 후 즉시 부하(immediate loading)를 시행하였다. 연조직 지지를 위해 임시치아의 윤곽 변화를 주며 임시치아를 교체하였고 digital wax-up 하여 최종 보철물을 수복하였다.