• Journal of Dental Rehabilitation and Applied Science
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• v.32 no.4
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• pp.274-279
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• 2016

Purpose: The purpose of this study was to evaluate the transmission of candida in denture by dental polishing lathe. Materials and Methods: Maxillary complete dentures made from the same model were infected with Candida albicans. Polishing wheels were keep in various chlorhexidine solution and distilled water for an hour. The infected dentures were polished by prepared dental polishing lathe with sterile pumice and distilled water. And then sterile maxillary complete dentures were polished with same method. Polishing surface was wiped with a cotton swab and the sample was regrown for checking Candida albicans. Results: All polishing wheel with chlorhexidine resist fungal infection. But the polishing wheel with distilled water is infected with Candida albicans. Conclusion: A chlorhexidine is highly efficient in fungal infection prevention on dental polishing lathe.

• Journal of Dental Rehabilitation and Applied Science
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• v.30 no.3
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• pp.199-205
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• 2014

Purpose: The purpose of this study was to evaluate the transmission of candida in denture by dental polishing lathe. Materials and Methods: Maxillary complete dentures made from the same model were infected with Candida albicans. The infected dentures were polished by dental polishing lathe with sterile pumice and distilled water. And then sterile maxillary complete dentures were polished with same method. Polishing surface was wiped with a cotton swab and the sample was checked for Candida albicans. The polishing wheel at room temperature was checked for Candida albicans every 24 hours for 3 days. Results: A considerable number of Candida was found on the polished sterile dentures. And the Candida albicans in polishing wheel was detected at up to two days. Conclusion: An anti-infection measure is urgently needed when dental polishing lathe is used for denture polishing, because of the possibility of fungal infection.

• 대한치과보철학회:학술대회논문집
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• 1996.11a
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• pp.85-86
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• 1996

• 대한치과보철학회:학술대회논문집
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• 1997.11a
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• pp.33-33
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• 1997

• Journal of Dental Rehabilitation and Applied Science
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• v.37 no.1
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• pp.16-22
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• 2021

Purpose: The purpose of this study is to investigate the effect of surface polishing and fabrication method on the flexural strength of temporary restorative resin. Materials and Methods: Each of four fabrication methods was used to make 30 temporary restorative resin specimens and the specimens were divided into two groups depending on whether they were polished by mechanical polishing. Specimens were stored in 37℃ thermostat for 24 hours. Flexural strength was measured using a universal testing machine (UTM). The data obtained through the experiment were analyzed with Two-way ANOVA, Tukey's HSD test and Paired t-test. Results: CAD/CAM milling group showed the highest flexural strength regardless of surface polishing. In decreasing order, the flexural strength of the other fabrication method group was as follows SLA 3D printing, DLP 3D printing, and Conventional method group. Conclusion: Surface polishing did not affect flexural strength of the temporary restorative resin (P > 0.05). However, there were statistically significant differences in flexural strength depending on fabrication method (P < 0.05).

• Journal of the Korean Academy of Esthetic Dentistry
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• v.24 no.2
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• pp.78-85
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• 2015

Although the finishing of ceramic restorations affects overall results of prosthetic procedures, the importance of finishing procedures has been underestimated. Finishing procedures have influence on the esthetics, and strength of ceramic restorations, and attrition of opposite tooth. For achieving the appropriate results of these factors, the overall understanding related to the finishing procedures of ceramic restoration is necessary.

• The Journal of Korean Academy of Prosthodontics
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• v.34 no.1
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• pp.15-30
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• 1996

저작은 치아, 악골, 저작근 뿐만 아니라 근 신경계, 고위 중추까지 복합적으로 관여되는 기능적 행위이다. 저작 형태는 다양한 모양을 가지나 두 가지 전형적인 군, 즉, 전방에서 관찰 시 그 양상이 수직적이며 절단 (chopping) 운동을 하는 군과 주로 측방으로 이루어지며 연마 (grinding)를 하는 군으로 나눌 수 있다. 본 연구의 목적은 저작 형태의 차이가 교합면 마모에 미치는 영향을 조사하는 것이다. 두개 하악 관절과 저작 습관에 이상이 없으며 교합면에 수복물이 없는 치과 대학생으로 하악 운동 궤적 기록기를 이용하여 상기의 전형적인 2가지 저작 형태를 보이는 각 15명씩을 피검자로 선택하였다. 각 피검자에 대한 임상 검사를 통해 ordinal scale로 교합면 마모의 등급을 조사하여, 평균 치아 마모도와 부위에 따른 치아 마모도를 비교 조사하였다. 각 피검자에 대한 인상 채득 후 모형을 제작하고 arbitrary scale로 교합면 마모의 등급을 조사하여, 평균 치아 마모도와 부위에 따른 치아 마모도를 비교 조사하고 저작측과 비저작측 마모를 비교 조사하였으며 수평 마모면과 수직 마모면을 비교 조사하였다. 1. 평균 치아 마모도는 ordinal scale로 측정하였을 때, 절단형과 연마형간에 유의할 만한 차이가 없었다.(p >0.05) 2. 부위에 따른 치아의 마모도는 ordinal scale로 측정하였을 때, 절단형과 연마형간에 유의할 만한 차이가 없었다.(p >0.05) 3. 평균 치아 마모도는 arbitrary scale로 측정하였을 때, 절단형에 비교하여 연마형에서 높은 마모도를 보였다.(p<0.05). 4. 절단형에 비교하여 연마형은 arbitrary scale로 측정하였을 때, 구치부에서는 높은 마모도를 보였으며 전치부에서는 유의할 만한 차이가 없었다(p<0.05) 5. 구치 평균 치아 마모도와 부위에 따른 치아의 마모도는 균형측에서 절단형과 연마형간에 유의할 만한 차이를 보이지 않았다(p>0.05). 6. 전치 평균 치아 마모도와 부위에 따른 치아의 마모도는 수평 마모면과 수직 마모면 비교시, 절단형과 연마형간에 유의할 만한 차이를 보이지 않았다.(p>0.05)

• Journal of the korean academy of Pediatric Dentistry
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• v.50 no.2
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• pp.205-216
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• 2023

This study aimed to compare the color stability and surface roughness of three-dimensional (3D) printing resin according to polishing methods. 3D-printed resin specimens were fabricated at TC-80DP (Graphy, Seoul, Korea) with a stereolithography 3D printer, and the specimens were divided into three groups, each of which was not polished, was polished using Enhance^®, and was polished using a Sof-Lex^TM disc. The CIE L^*a^*b^* value and the surface roughness of each group were measured and immersed in artificial saliva and orange juice after 0, 1, 7, 30, and 60 days, and the color difference (ΔE^*) was calculated. As a result of the study, no noticeable color change was observed in artificial saliva, but a noticeable color change was demonstrated in orange juice after 60 days of immersion, and the difference was significant. In the Sof-Lex^TM group, surface roughness according to the solution was found to be significantly higher in the orange juice than that in artificial saliva. No significant difference in color change was found according to the polishing method, but surface roughness was significantly lower in the Sof-Lex^TM group than both that of the unpolished group and that of the Enhance^® group. Nevertheless, all groups exhibited clinically acceptable properties regardless of their higher surface roughness than the threshold for plaque accumulation. Overall, this study recommends utilizing Sof-Lex^TM for polishing 3D printing resin when used in primary anterior tooth coverage.

• The Journal of the Korean dental association
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• v.18 no.8 s.137
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• pp.609-612
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• 1980

• 대한치과보철학회:학술대회논문집
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• 1995.12a
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• pp.43-44
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• 1995