• 구강회복응용과학지
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• 제33권3호
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• pp.199-206
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• 2017

최종 수복물을 가철성 국소의치로 계획하였을 때 구강내 소수 잔존 치근을 유지하고 활용한다면, 기능적으로 좀더 나은 결과를 얻을 수 있다. 이번 증례는 소수 치아와 잔존 치근을 갖고 있는 환자에서 'Locator Root Attachment'를 활용하여 상악 가철성 피개의치로 최종 수복한 증례이다. 잔존 치근에 대한 정확한 임상적, 방사선학적 평가 후 어태치먼트를 적용하여 기능적으로 우수한 결과를 얻을 수 있었기에 이에 보고하고자 한다.

• 대한치과보철학회지
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• 제35권3호
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• pp.486-503
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• 1997

The purpose of this study was to evaluate the stress patterns developed in abutment and residual ridge according to removable denture design in case of remaining mandibular canines. The removable denture designs in this study were as foolows : 1. Removable partial denture with non-splinted abutment 2. Removable partial denture with splinted abutment 3. Overdenture with telescopic crown 4. Overdenture with O-Ring attachment 5. Overdenture with combination bar attachment Photoelastic stress analysis was used to record the isochromatic fringe patterns and to calculate principal stress components at measuring points. The results were as follows : 1. In case of removable partial denture with non-splinted abutment, stress of root area at the loaded side was the largest. No significant differences in stress of root area were observed between loaded side and unloaded side. 2. No significant differences in stress of residual ridge at the loaded side were observed between removable partial denture with splinted abutment and removable partial denture with non-splinted abutment. 3. In case of combination bar attachment retained overdenture, stress of root area was the largest and in case of telescopic crown retained overdenture, stress of root area was the lowest. 4. In case of attachment retained overdenture, stress of residual ridge was lower but stress of root area was larger than in case of removable partial denture.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제42권4호
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• pp.205-208
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• 2016

Actinomycosis is an infection caused by the actinomyces genus and is associated with trauma or previous infection. A 58-year-old male patient was referred from a private dental clinic for root extraction of the lower right molar. The x-ray showed fractured root-like material distal to the distal root of the lower right second molar. A biopsy during extraction of the root-like material was performed, which revealed a sequestrum with actinomycosis by a pathological examination. In this case, the radiopacity of the suspicious lesion was higher than that of the surrounding alveolar bone, which confused it with the root tip. The diagnosis of actinomycosis required long-term antimicrobial therapy, which is very different from simple extraction or removal of sequestrum.

• Journal of Korean Dental Science
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• 제9권2호
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• pp.63-68
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• 2016

Pressure root resorption can be observed during the eruption of permanent dentition, especially of the maxillary canines (affecting lateral incisors) and mandibular third molars (affecting mandibular second molars). Since the cause of root resorption of the adjacent affected teeth is evident, treatment simply involves extraction of the impacted tooth. However, there have been few reports on the prognosis of the remaining resorbed tooth, as dentists often choose to extract them when damage due to root resorption is observed. We report a case involving a tooth that was severely resorbed due to pressure from an adjacent impacted tooth. After extraction of the impacted tooth, the remaining tooth retained vital pulp and survived as a functional tooth.

• 대한치과의사협회지
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• 제58권8호
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• pp.486-494
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• 2020

Objectives: Management of a horizontal root fracture of an anterior teeth is challenging and often requires multiple approaches for improving the functional and esthetic outcomes. This case report describes the treatment and 2-yr follow up of 3 maxillary incisors with horizontal root fracture. Two maxillary central incisors were treated with Mineral Trioxide Aggregate (ProRoot MTA, Dentsply, Tulsa, OK, USA). Left maxillary lateral incisors were treated with endodontic treatment and submerged. During 2-yr of follow-up evaluation, the root-fractured teeth of the present patients were well retained in the arch, showing periodontal healing even after endodontic treatment.

• Restorative Dentistry and Endodontics
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• 제39권2호
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• pp.126-131
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• 2014

Among dental traumas, horizontal root fractures are relatively uncommon injuries. Proper initial management and periodical evaluation is essential for the successful treatment of a root-fractured tooth. If pulpal necrosis develops, endodontic treatment is indicated, exclusively for the coronal fragment. Fragment diastases exert a great influence on healing at the fracture line and on pulpal necrosis. An adequately treated root-fractured tooth has a good prognosis. This case report describes the treatment and 2-yr follow up of 3 maxillary central incisors, first with horizontal root fracture, second with horizontal root fracture and avulsion, and third with horizontal root fracture and lateral luxation. All three cases were treated with mineral trioxide aggregate (ProRoot, Dentsply). During 2 yr of follow-up evaluation, the root-fractured teeth of the present patients were well retained in the arch, showing periodontal healing, even after endodontic treatment.

• Journal of Ginseng Research
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• 제15권3호
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• pp.183-187
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• 1991

Effect of ginseng hairy and native roots on body absorption, fecal and urinary excretion of Ingested radiostrontium were investigated in the mouse(NIH-strain, male) treated with or without pre-feeding of each ginseng soluble fraction. The test groups were fed with basic diet supplemented with 1% each ginseng soluble fraction for 7 darts before the radiostrontium were administered by intragastric intubation. In the groups of treated with soluble fraction from ginseng hairy roots, the radioactivities of fecal and urinary excretion increased about 15% over than that of control groups and the whole body retention were about 38%. In the groups of treated with soluble fraction from native ginseng roots, the radioactivities of fecal and urinary excretion increased about 25% over than that of control groups and the whole body retention were about 28%. Also, the levels of radiostrontium accumulation retained significantly the higher percent in skeletons than in other organs.

• 생물환경조절학회지
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• 제14권3호
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• pp.182-189
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• 2005

본 연구는 혼합상토의 보수성 증가를 위하여 polyacrylamide 고흡수성 수지 Stocksorb C를 혼합할 경우 상토의 물리성에 미치는 영향을 밝히기 위하여 수행하였다. 네종류 혼합상토, 피트모쓰 + 버미큘라이트(1:1 , v/v; PV), 피트모쓰+부숙왕겨(1:1, v/v; PR), 피트모쓰+부숙톱밥(1:1, v/v; PS), 그리고 피트모쓰+부숙수피(1:1, v/v; PB)를 조제하는 과정에서 STSB를 혼합하고, 플라스틱 포트에 충전하였으며, 5주 후에 상토의 물리적 특성을 측정하였다. STSB의 혼합비율이 증가할수록 PV, PS 및 PB 상토의 공극률이 증가하여 $5{\%}$ 수준의 통계적인 차이가 인정되었고, 직선 또는 2차곡선회귀가 성립하여 경향을 찾을 수 있었다. STSB의 혼합비율 증가로 PS와 PB상토의 용기용수량이 뚜렷하게 증가하였으나 PV 및 PR상토에서는 STSB의 혼합비율에 따른 처리간 차이가 인정되지 않았다. 특히 STSB의 혼합은 PV PS및 PB 상토의 기상률을 뚜렷하게 증가시켜 처리간 통계적인 차이와 함께 직선 및 2차곡선회귀가 성립하여 경향이 뚜렷하였다. 고흡수성 수지의 혼합비율이 높아질수록 4.90 kPa, 9.81 kPa, 29.4 kPa및 1.5 MPa 토양 수분장력 하에서 존재하는 수분량이 많았다. 각 상토별로 29.4 kPa이나 1.5 MPa에서 존재하는 수분은 PV 혼합상토에서 적었고, PB와 PR 혼합상토에서 유사한 수준이었으며, PS 혼합상토에서 가장 많았다. 이는 고흡수성 수지의 혼합비율이 높아짐에 따라 상토가 보유하는 수분량이 증가하지만 식물이 쉽게 흡수할 수 있는 수분량이 증가하지 않음을 의미한다.

• The Plant Pathology Journal
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• 제34권3호
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• pp.241-249
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• 2018

Commercial biocontrol of microbial plant diseases and plant pests, such as nematodes, requires field-effective formulations. The isolate Pseudomonas chlororaphis O6 is a Gram-negative bacterium that controls microbial plant pathogens both directly and indirectly. This bacterium also has nematocidal activity. In this study, we report on the efficacy of a wettable powder-type formulation of P. chlororaphis O6. Culturable bacteria in the formulated product were retained at above $1{\times}10^8$ colony forming units/g after storage of the powder at $25^{\circ}C$ for six months. Foliar application of the diluted formulated product controlled leaf blight and gray mold in tomato. The product also displayed preventative and curative controls for root-knot nematode (Meloidogyne spp.) in tomato. Under laboratory conditions and for commercially grown melon, the control was at levels comparable to that of a standard commercial chemical nematicide. The results indicated that the wettable powder formulation product of P. chlororaphis O6 can be used for control of plant microbial pathogens and root-knot nematodes.

• Journal of Periodontal and Implant Science
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• 제20권2호
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• pp.164.1-164.1
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• 1990