http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 주제어 : 3D printing denture base resin (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
실험용 3D 프린팅 의치상용 레진의 기계적 성질과 생체적합성
박다령,배지명 대한치과재료학회 2019 대한치과재료학회지 Vol.46 No.4
This study was conducted to compare the flexural properties and biocompatibility of experimental 3D printing resins withcommercial 3D-printing resins and conventional denture base resin. Auto polymerized pour-type denture base resin (RESS LT;Retec, Germany) was used as a control group. A commercial 3D printing denture base resin, NextDent (Base, Vertex Dental,Soesterberg, Netherlands) and two 3D printing resins, White prototyping resin (PR57-W, Autodesk, USA) and Clear prototypingresin (PR48, Autodes, usa) were compared. Experimental 3D printing resins (E1, E2, E3) were made with different ratios ofdimethacrylates. DLP 3D printer (VIDA, Envisiontec) was used for 3D printing. The specimens (64×10×3.3 mm) were madebased on the protocol of ISO 20795-1. The flexural strength and flexural modulus were measured by a universal testing machine(Z020, Zwick, Germany) at a crosshead speed of 5 mm/min. MTT test was performed to evaluate the cell viability. The flexuralstrength and flexural modulus of E2 were significantly higher than those of other groups (p<0.05). Biocompatibility of all experimental3D printing resins were not significantly different from negative group (p>0.05). E2 is considered to be a promising materialas a denture base resin for 3D printing. 본 연구에서는 실험용 3D 프린팅 의치상용 레진을 시판되는 3D 프린팅 의치상용 레진과 유동성 의치상용 레진그리고 일반적인 3D 프린팅 레진의 기계적 성질과 생체적합성을 비교하였다. 대조군으로 자가중합형 유동성 의치상용레진(Press LT, Retec, Germany)을 사용하였다. 3D 프린팅 의치상용 레진으로 제작된 NextDent (Base, Vertex Dental,Netherlands)과 두 가지 일반 3D 프린팅 레진인 White prototyping resin (PR57-W, Autodesk, USA)과 Clear prototypingresin (PR48, Autodesk)도 비교하고자 하였다. 실험용 3D 프린팅 의치상용 레진(E1, E2, E3)이 조성의 비율을 다르게하여 제작되었다. 3D 프린팅에는 DLP 3D 프린터(VIDA, Envisiontec)를 사용하였다. 모든 시편은 ISO 20795-1 규격에따라 64 mm×10 mm×3.3 mm로 제작하였다. 굴곡강도와 굴곡계수는 만능시험기(Z020, Zwick, Ulm, Germany)를이용하여 cross-head speed 5 mm/min으로 측정하였다. 생체적합성에 대한 평가방법으로서 MTT 시험을 수행하였다. E2의 굴곡강도 및 굴곡계수는 다른 그룹보다 유의하게 높았고(p<0.05), white를 제외한 모든 실험군의 생체 적합성은음성대조군과 유의차가 없었다(p>0.05). E2는 3D 프린팅용 의치상 레진으로 응용될 가능성이 높은 재료로 사료된다.
-
The mechanical properties of 3D printed denture base resin incorporating essential oil microcapsules
Steve An,Jane Lesleigh Evans,Stephen Hamlet,Robert Matthew Love 대한치과보철학회 2023 The Journal of Advanced Prosthodontics Vol.15 No.4
Purpose. The aim of this study was to investigate the mechanical properties of three-dimensional (3D) printed denture base resin incorporating microcapsules containing plant essential oils. Materials and Methods. Denture base specimens containing up to 3% w/v essential oil microcapsule powders (MCPs), i.e., eucalyptus, geranium, lavender, menthol, and tea tree, in two resins (Detax and NextDent 3D+) were 3D printed using two printers (Asiga and NextDent 5100). The dispersion and interaction of the MCPs in the resin were assessed by SEM while the mechanical properties of the incorporated denture base including flexural strength (MPa), flexural modulus (MPa), Vickers hardness (VHN), and surface roughness (Ra) were also subsequently evaluated. Statistical analysis of any differences in mean values was determined using a two-way ANOVA with Tukey’s post hoc testing (α = .05). Results. The spherical shape of the MCPs was maintained during the mixing and polymerization/printing process. However, the Detax-Asiga group showed significant agglomeration of the MCPs even at the lowest MCP concentration levels (0.5% w/v). Overall, as the microcapsule concentration increased, the mean flexural strength decreased, though the menthol MCP groups remained compliant with the ISO standard. The flexural modulus and harness remained relatively unchanged, and the flexural modulus complied with the ISO standard regardless of the MCP concentration. Surface roughness increased with the addition of the MCPs but also remained below that required for clinical acceptance. Conclusion. Incorporation of microencapsulated plant essential oils into 3D printed denture base resin was successfully achieved. While incorporation negatively influenced flexural strength and surface roughness, little effect on flexural modulus and Vickers hardness was demonstrated.
-
-
RISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
