• Title/Summary/Keyword: RPD

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Removable prosthetic rehabilitation in patient with maxillofacial defects caused by gunshot: A case report (총상으로 인한 악안면 결손을 가진 환자에 대한 가철성 보철물 수복증례)

  • Lee, Donggyu;Kang, Jeongkyung
    • The Journal of Korean Academy of Prosthodontics
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    • v.55 no.2
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    • pp.198-204
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    • 2017

  • Maxillofacial defect comes from congenital defect, trauma and surgical resection. Patients with intraoral defect are commonly related to maxillary defect and they need prosthetic rehabilitation. Functional reconstruction of partially edentulous mandible has many limitations. However, if both condyles are intact, maxillofacial prosthesis using partial denture give competent results. In this case, a patient of 58 year-old male has a defect on palate and left mandibular posterior teeth from gunshot. The maxillary defect of this patient is Class IV according to Aramany classification and the mandibular one is Type V according to Cantor and Curtis classification. For retention of the obturator, remaining teeth are fully utilized and artificial teeth are arranged harmoniously to provide stable occlusion. Mandibular RPD covered limited range of deformed soft tissue derived from mandibular resection surgery. With these treatments, the patient in this case showed improvements in mastication, swallowing and speech.

  • https://doi.org/10.4047/jkap.2017.55.2.198 인용 PDF

Comparison of In-Field Measurements of Nitrogen and Other Soil Properties with Core Samples (코어샘플을 이용한 질소 등 토양성분 현장 측정방법의 비교평가)

  • Kweon, Gi-Young;Lund, Eric;Maxton, Chase;Kenton, Dreiling
    • Journal of Biosystems Engineering
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    • v.36 no.2
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    • pp.96-108
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    • 2011

  • Several methods of in-field measurements of Nitrogen and other soil properties using cores extracted by a hydraulic soil sampler were evaluated. A prototype core scanner was built to accommodate Veris Technologies commercial Vis-NIRS equipment. The testing result for pH, P and Mg were close to RPD (Ratio of Prediction to Deviation = Standard deviation/RMSE) of 2, however the scanner could not achieve the goal of RPD of 2 on some other properties, especially on nitrate nitrogen ($NO_3$) and potassium (K). In situ NIRS/EC probe showed similar results to the core scanner; pH, P and Mg were close to RPD of 2, while $NO_3$ and K were RPD of 1.5 and 1.2, respectively. Correlations between estimations using the probe and the core scanner were strong, with $r^2$ > 0.7 for P, Mg, Total N, Total C and CEC. Preliminary results for mid-IR spectroscopy showed an $r^2$ of 0.068 and an RMSE for nitrate (N) of 18 ppm, even after the removal of calcareous samples and possible N outlier. After removal of calcareous samples on a larger sample set, results improved considerably with an $r^2$ of 0.64 and RMSE of 6 ppm. However, this was only possible after carbonate samples were detected and eliminated, which would not be feasible under in-field measurements. Testing of $NO_3$ and K ion-selective electrodes (ISEs) revealed promising results, with acceptable errors measuring soil solutions containing nitrate and potassium levels that are typical of production agriculture fields.

  • https://doi.org/10.5307/JBE.2011.36.2.96 인용 PDF KSCI