• 구강회복응용과학지
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• 제31권2호
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• pp.150-157
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• 2015

이 증례 보고의 목적은 임플란트 근단병소를 가진 임플란트를 다양한 임상적 치료 적용 후 5 - 12년간 관찰하여 효과적인 임상적 접근 방법을 제시하고자 한다. 세 명의 환자 중 한 명은 병적 증상이 관찰되지 않아 비활성형(inactive form)으로 진단하고, 부가적인 치료 없이 주기적 관찰을 시행하였다. 두 명의 환자는 통증을 호소하여 감염형(infected form)으로 진단하고, 2 - 3주간 전신적인 항생제를 처방하였다. 한 명은 증상이 개선되어 주기적인 관찰을 시행하고 있으나, 다른 한 명에서는 임플란트 근단병소의 크기가 증가하고 통증의 개선도 보이지 않아 임플란트를 제거한 후 재식립 후 보철치료를 완료하였다. 세 환자 모두 현재까지 기능적 이상 없이 임플란트를 사용하고 있다. 임플란트 근단병소의 발생을 예방하기 위해서는 수술 과정 중 골 괴사를 유발할 수 있는 과열 등의 수술적 외상을 최소화하는 것이 필요하며, 임플란트 근단병소가 발생하였을 경우에는 조기 진단을 통해 적절한 전신적 항생제 처방이나 필요한 경우 외과적 처치를 통해 임플란트의 성공을 높일 수 있을 것으로 생각된다.

• 한국임상수의학회지
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• 제23권4권
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• pp.476-479
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• 2006

A 9-year-old, female Yorkshire terrier and a 10-year-old, female Maltese were referred to the Veterinary Medical Teaching Hospital of Konkuk University. The dogs were presented with severe swelling and cutaneous sinus tract on the left suborbital lesion. Under general anesthesia, we performed physical, intraoral examinations and survey radiography, and diagnosed as periapical abscess in a left fourth premolar tooth. They were treated with tooth extraction, and the sinus tracts were drained with 0.05% chlorhexidine solution. After teeth extractions, medication applied by the result of antibiotic sensitivity test. During follow-up 10 months later, the left suborbital swelling had completely resolved.

• 치과방사선
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• 제21권2호
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• pp.261-273
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• 1991

This study was undertaken to document and better defined this condition to help clarify this clinical and radiographical appearances by the analysis of clinical and radiographical features of fibro-osseous lesions in the jaws. A study was made of a series of 128 cases with fibro-osseous lesions. The obtained results were as follows. 1. Fibrous dysplasia of the jaws occurred with equal predilection for males and females. But the females occurred in 68% of cemento-ossifying fibroma and 75% of periapical cemental dysplasia. 2. 43% of fibrous dysplasia and 32% of cemento-ossifying fibroma occurred in the 2nd decades and 33% of periapical cemental dysplasia in 5th decades. 3. 62% of fibrous dysplasia occurred in the maxilla, 73% of cemento-ossifying fibroma in mandible, 90% of periapical cemental dysplasia in mandible. 4. 98% of fibrous dysplasia occurred in premolar-molar region, 77% of cemento-ossifying fibroma in molar region, 68% of periapical cemental dysplasia in incisor region. 5. In serial radiographic features, mature stage were 55% of fibrous dysplasia, 45% of cemento-ossifying fibroma, 59% of periapical cemental dysplasia. 6. 87% of fibrous dysplasia had monostotic lesion, 67% of periapical cemental dysplasia had multiple lesions. 7. In fibrous dysplasia and cemento-ossifying fibroma, migration of tooth occurred in 61.7% and 36.4%, retention of tooth occurred in 4.3% and 9.1%, loss of lamina dura occurred in 6.4% and 9.1%, and root resorption had not occurred in fibrous dysplasia, but occurred in 18% of cemento-ossifying fibroma, displacement of mandibular canal occurred in 14.9% and 31.8%.

• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2003년도 제120회 추계학술대회 제 5차 한ㆍ일 치과보존학회 공동학술대회
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• pp.591-591
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• 2003

Apical periodontitis is inflammation of the periodontium caused by infection of the pulp canal system. Moreover, a dental periradicular lesion occurs as a periradicular tissue reaction to bacterial infection and consists of periradicular inflammation with alveolar bone destruction and root resorption, a consequence of the interaction between oral flora and the existing host defenses. Many investigations dealing with the pathogenesis and history of periradicular lesions have described histologically, immunologically, biochemically the development of the periradicular lesion；but none of these studies have shown any correlation between this lesion and several factors, the whole body disease in the worldwide.(omitted)

• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2001년도 춘계학술대회
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• pp.245-246
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• 2001

No Abstract, See Full Text

• Restorative Dentistry and Endodontics
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• 제33권6호
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• pp.560-569
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• 2008

본 review 논문의 목적은 통상의 근관치료로 해결되지 않는 persistent periapical lesion의 원인이 되는 주요 세균을 제거하고자 시행한 여러가지 실험을 비교분석하여 과연 (1) Enterococcus faecalis가 근관치료 실패의 주요 원인균인지 (2) 그리고 과연 그렇다면 근관치료에 실패한 증례에서 E. faecalis와 biofilm을 제거할 수 있는 치료 protocol이 있는 것인지를 확인하여 보다 나은 근관치료 성공을 위한 치료 protocol의 확립과 앞으로의 연구방향을 재조명하는 것이다. 지금까지 진행되어온 연구 결과에 대한 객관적인 분석이나 적절한 평가가 이루어지지 않은 가운데 어떤 특정한 연구를 통해 E. faecalis를 제거하는데 유의성있는 효과를 보인다고 알려진 세척액이나 약제를 막연한 기대감을 가지고 실제 임상에 사용하고 있는 실정에서 현재 진료실에서 사용하고 있는 치료 protocol에 대한 검증이 절실한 시점에서 review해 본 결과 현재까지 진행되어 왔던 여러 연구 결과를 통해 확신할 수 있는 것은 치료 protocol에 따라 현재 사용하고 있는 근관세척액이나 근관내 약제만으로도 E. faecalis나 그 biofilm을 대부분 제거할 수 있다는 사실이다. 하지만 이 그 protocol에 따라 근관치료 술식을 충실하게 이행한다 해도 근관치료가 100% 성공한다고 보장할 수는 없다. 물론 세균이 아닌 다른 요소에 의해 근관치료의 실패가 일어난다고도 할 수 있지만 그보다는 결국 체내의 면역반응에 저항하는 세균의 능력에 기인하는 것으로 보인다. 따라서 높은 수준의 치료 성공률을 지속적으로 유지하기 위해서는 위에서 언급된 바와 같은 제대로 된 치료 protocol을 따라 근관치료를 진행하면서 좀더 나은 결과를 얻기 위해 새로운 protocol을 개발하고 정립하는 과정이 계속되어야 한다.

• 치과방사선
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• 제17권1호
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• pp.233-248
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• 1987

The author studied the effect of periapical bone loss on radiographic interpretation by using a dry adult human mandible. Artificial bony lesions were created at the apices of two mandibular second molars and four mandibular bicuspids. The jaw was stabilized and various artificial lesions were radiographed under ideal circumstances. Radiographic pictures were recorded and compared with the size of the actual lesions. The obtained results were as follows: 1. The size of actual lesions were always larger than their radiographic pictures. 2. The size of actual lesion had a greater discrepancy in the molar area where the cortical plates were havier, but the lesions in the bicuspid areas were only slightely larger than their radiographic pictures, and in these areas the cortical plates were quite thin. 3 Periapical lesions located in cancellous bone did not appear on a radiograph, regardless of the size of the created lesion, but when the junctional bone was involved or the cortical plate was perforated, the definite bone destructive change was observed on the roentenogram. 4. Removal of the entire buccal or lingual plate did not affect the trabecular pattern of bone on the roentgenogram. 5. When the cancellous bone and junctional bone were removed simultaneously, altered trabecular patterns were observed on the roentgenogram.

• 치과방사선
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• 제24권1호
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• pp.137-147
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• 1994

A digital imaging system using Machintosh Ⅱ ci computer, high resolution Sony XC-77 CCD camera, Quickcapture Frame Grabber Board was evaluated for quantitative analysis of standardized periapical film with aluminum step wedge. The results were as follows: 1. Correlation between Al thickness and gray level was high-positively associated(r²=0.99, p<0.001). 2. Correlation between measured weight of experimental lesion and estimated relative lesion volume by digital subtracted radiography was also high-positively associated (r²=0.98, p<0.001). 3. As exposure time was increased, mean gray level was decreased(p<0.01) and slope of regression line between Al thickness and gray level was also decreased (p<0.01). And when the exposure time was shorter than 0.2 second, the value of r² was relatively low. On the basis of the above results, it is considered that this digital imaging system using a Macintosh Ⅱ ci computer & a high resolution CCD monochrome camera will be useful in evaluating digitized image from standardized periapical film quantitatively.

• Imaging Science in Dentistry
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• 제35권4호
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• pp.199-202
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• 2005

Purpose : To report the incidence of radiological findings from screening panoramic radiographs and verify the validity of the panoramic radiography for screening purposes. Materials and Methods : Six thousand one hundred and sixty panoramic radiographs taken from the patients visiting the Health Promotion Center of CNUH were selected for this retrospective study. Panoramic radiographs were examined into the following pathologic conditions : the presence of periodontal bone loss, dental caries, periapical radiolucencies, retained roots, impacted supernumerary teeth, impacted third molars, odontoma, cystic lesions other than radicular cyst, sialoliths, and mixed radiolucent-radiopaque lesions. Number of pathologic conditions and Prevalence values were recorded. Results: The prevalences of pathologic conditions were $72.9\%$ of periodontal bone loss, $32.2\%$ of dental caries, $11.9\%$ of periapical radiolucencies, $10.8\%$ of retained roots, $0.4\%$ of root fracture, $1.0\%$ of impacted supernumerary teeth, $1.0\%$ of impacted third molars, $0.06\%$ of odontoma, $0.08\%$ of cystic lesion other than radicular cyst, $0.2\%$ of prolonged retention of deciduous tooth, $0.1\%$ of sialolith, and $0.04\%$ of mixed radiopaque and radiolucent lesion. Conclusion : Although the panoramic radiograph should not be used to replace intraoral radiographic and clinical examinations, this study showed that many dental pathologic conditions could be detected on panoramic radiographs. The panoramic radiograph might serve as a diagnostic aid in dental health evaluation programs.

• 대한디지털의료영상학회논문지
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• 제13권2호
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• pp.91-97
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• 2011

This study was conducted to know usefulness of panoramic radiography by comparing clinical evaluation and dental panoramic radiography in case of oral examination. Following results were concluded by analyzing difference between the result of Clinical evaluation and dental panoramic radiography. According to comparison the result of clinical evaluation and panoramic radiography, In Shin's research, dental caries was higher by 23.1%, periodontal disease was 31.9%, in An's research, dental caries was 24.2%. From new point of view from panoramic radiography, impacted tooth was 33.6%, Sinus abnormalities was 11.6%, periapical lesion was 5.4% in Shin's research and periapical lesion was 17.4%, 3rd molar impaction was 15.3% and retained root was 5.3% in An's research. Any kind of caries were not found in oral examination in the 66.7% of patients among patients with dental root caries in An's research. There were misdiagnose in oral examination(even side(59.5%),proximal side(59.5%), seconds caries(44.0%).