• 대한소아치과학회지
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• 제36권2호
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• pp.175-188
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• 2009

어린이 치과 진료 시 진료에 도움을 얻고자 연구한 설문지조사 시 진료진들의 복장에 대한 선호도에 응한 650명의 어린이에 치과 진료진들에 대한 선호도에서 다음과 같은 결과를 얻었다. 1. 남 여 치과의사의 복장으로 정장가운과 일상복 중 전반적으로 정장가운을 대상자의 특정별로 남자 67.7$\sim$87.6% 여자 59.2$\sim$75.9% 선호하였다. 2. 남자 치과의사의 정장가운 중 전형적인 흰색 긴가운을 가장 선호하였으며 일반 긴가운, 짧은 자켓이나, 짧은 수술복 순으로 선호하였다. 3. 여자 치과의사의 가운 중 전형적인 흰색 긴가운을 가장 선호하였으며 일반 긴가운, 짧은 자켓가운, 짧은 수술복 순으로 선호하였다. 4. 치과위생사의 가운에 대한 선호도에서는 투피스 바지에 대한 선호도가 높았으나, 원피스, 투피스 치마, 만화 캐릭터, 에이프런 가운에 대한 선호도의 차이는 크지 않았다. 5. 가운의 색에 대한 선호도에서는 흰색에 대한 선호도가 높았다. 6. 가운의 무늬에 대한 선호도에서는 전형적인 형태의 민무늬에 대한 선호도가 높았다.

• 구강회복응용과학지
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• 제24권1호
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• pp.1-17
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• 2008

이 연구의 목적은 고정성 보철물의 제거와 지대치의 생존율을 위한 원인을 조사하는 것이었다. 총 192개의 고정성 보철물이 조선대 치과병원에서 제거되었고 308개의 지대치가 조사되었다. 제거의 가장 빈번한 이유는 치주 문제였고(30.7%), 그 다음이 우식(29.7%), 그리고 치근단 문제(18.8%) 였다. 금속도재관에서 치주 문제는 가장 빈번한 제거의 원인이었다. 완전주조관에서는 우식이 제거의 가장 흔한 이유였다. 치근단과 치주의 문제는 각각 40대 이하와 50대 이상의 사람들에서 가장 흔한 원인이었다. 308개의 지대치 중 생활치와 실활치는 각각 135(43.8%)와 173(56.2%) 이었다. 135개의 생활치 중에서 39(28.9%)개가 발거되었고, 173개의 실활치 중에서 85(49.1%)개가 발거되었다. 고정성 보철물의 제거와 지대치의 발거를 위한 각각의 위험 요소는 최종 보철물과 지대치의 예상과 진단을 위해 더 명확히 평가되어야만 한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제39권1호
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• pp.9-13
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• 2013

Objectives: Bisphosphonates (BP) are widely used in medicine for inhibiting bone resorption; however bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a major side effect of BP. To date, there have been no specific reports on the incidence of BRONJ among Koreans. This study investigated the preliminary results from a nationwide survey of BRONJ in the Departments of Oral and Maxillofacial Surgery (OMFS) at individual training hospitals. Materials and Methods: A total of 15 OMFS departments (10 from dental schools, 4 from medical schools, and 1 from a dental hospital) participated in a multi-centric survey. This study assessed every BRONJ case diagnosed between January 2010 and December 2010. The patient age and BP type were evaluated. Results: A total of 254 BRONJ cases were collected. The majority of BRONJ cases were associated with oral BP therapy, while 21.8% of the cases were associated with intravenous administration. Alendronate was the drug most frequently related to BRONJ (59.2% of cases), followed by risedronate (14.3%) and zolendronate (17.0%). The average age of BRONJ patients was $70.0{\pm}10.1$ years, with a range of 38-88 years of age. With the number of BP patients in Korea reported to be around 600,000 in 2008, the estimated incidence of BRONJ is at least 0.04% or 1 per 2,300 BP patients. Conclusion: The results suggest that the estimated incidence of BRONJ in Korea is higher than the incidence of other countries. Future prospective studies should be carried out to investigate the exact epidemiological characteristics of BRONJ in Korea.

• Restorative Dentistry and Endodontics
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• 제41권1호
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• pp.55-62
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• 2016

Objectives: The purpose of this study was to investigate the incidence of root fusion and C-shaped root canals in maxillary molars, and to classify the types of C-shaped canal by analyzing cone-beam computed tomography (CBCT) in a Korean population. Materials and Methods: Digitized CBCT images from 911 subjects were obtained in Chosun University Dental Hospital between February 2010 and July 2012 for orthodontic treatment. Among them, a total of selected 3,553 data of maxillary molars were analyzed retrospectively. Tomography sections in the axial, coronal, and sagittal planes were displayed by PiViewstar and Rapidia MPR software (Infinitt Co.). The incidence and types of root fusion and C-shaped root canals were evaluated and the incidence between the first and the second molar was compared using Chi-square test. Results: Root fusion was present in 3.2% of the first molars and 19.5% of the second molars, and fusion of mesiobuccal and palatal root was dominant. C-shaped root canals were present in 0.8% of the first molars and 2.7% of the second molars. The frequency of root fusion and C-shaped canal was significantly higher in the second molar than the first molar (p < 0.001). Conclusions: In a Korean population, maxillary molars showed total 11.3% of root fusion and 1.8% of C-shaped root canals. Furthermore, root fusion and C-shaped root canals were seen more frequently in the maxillary second molars.

• Journal of Oral Medicine and Pain
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• 제44권2호
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• pp.54-58
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• 2019

Purpose: The aim of this study is to evaluate the correlation between tongue pain and tenderness of tongue by digital palpation (DP) in Burning Mouth Syndrome (BMS) patients. Methods: One hundred thirty-four consecutive patients (60 BMS with tongue pain and 74 non-BMS) who attended the Department of Oral Medicine (Chosun University Dental Hospital, Gwangju, Korea) from January 2018 to December 2018 were included in this study. The examined sites were anterior, lateral (right and left) and central part of the tongue. The pain sites were reported by the patients and the tender points on DP test were recorded by the clinicians. DP test was performed by well-trained clinicians with palpation of the tongue with 0.5 kg pressure using the thumb and index finger. Obtained results for BMS and non-BMS group were compared using t-test (p<0.05). Results: 1. The BMS group had higher tender score on DP test of the tongue and there was a significant difference between the BMS and non-BMS groups. 2. The accuracy of the pain site and the tender point was shown to be 0.68 total (anterior 0.68; right lateral 0.69; left lateral 0.70; central 0.61). Conclusions: This study suggests that the tenderness to DP of the tongue could be related to the painsites in the BMS patients. Further study is needed to confirm the usefulness of DP test of the tongue to examine the BMS patients.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제37권3호
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• pp.225-228
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• 2011

This study evaluated the mineral crystalline structure of an autogenous tooth bone graft material. The crystalline structures of the autogenous tooth bone graft material enamel (AutoBT E+), dentin (AutoBT D+), xenograft (BioOss), alloplastic material (MBCP), allograft (ICB) and autogenous mandibular cortical bone were compared using XRD. The XRD pattern of AutoBT dentin and ICB was similar to that of autogenous bone.

• 구강회복응용과학지
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• 제36권4호
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• pp.232-241
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• 2020

목적: 이 연구는 정출된 자연치와 대합되는 임플란트에 발생하는 합병증과 그 양상에 대해 고찰하여 대합치 정출이 임플란트 합병증에 어떠한 영향을 미치는지에 대해 알아보고자 하였다. 연구 재료 및 방법: 조선대학교 치과병원에서 2006년부터 2018년 사이에 임플란트치료를 받은 환자 중에서 유지관리기간이 최소 5년 이상이면서 구치부 임플란트와 대합되는 자연치가 방사선 사진상으로 측정 및 비교 가능한 임플란트만을 선택하였다. 정출된 구치부 자연치와 대합되는 임플란트를 실험군인 Group 1 (n = 167: 상악(Group 1max) = 92, 하악(Group 1man) = 75)과 정출소견이 없는 구치부 자연치와 대합되는 임플란트를 대조군인 Group 2 (n = 656: 상악(Group 1max) = 272, 하악(Group 1man) = 384)로 분류하였다. 두 그룹 사이에 합병증의 발생빈도와 변연골 흡수에 대해 조사하였다. 결과: Group 1과 Group 2 사이에 합병증의 발생빈도는 통계학적으로 유의성이 있었다. 특히, 상악골의 치조골 소실 빈도와 치조골 소실 양이 통계적으로 유의한 차이를 나타내었다. 결론: 정출된 자연치는 대합되는 임플란트에 골흡수를 비롯한 합병증을 더 빈번하게 유발할 수 있다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제40권5호
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• pp.233-239
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• 2014

Implants are typically placed after performing ridge expansion by inserting screws of gradually increasing thickness and good clinical outcomes are often obtained. We placed 11 implants in 6 patients, and one implant failed during osseointegration but it was replaced immediately after removal and successful prosthetic treatments were completed. During these surgeries, buccal cortical plate complete fractures do not occur. Inserting screws for ridge expansion is a successful and predictable technique for implant placement in narrow alveolar bone.

• 대한치과의사협회지
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• 제50권12호
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• pp.743-754
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• 2012

urpose : The purpose of this study was to evaluate the US II plus/GS II Osstem$^{(R)}$ implants through the study for the clinical success rate during the installation of the Osstem¢Á implants after bone graft. Materials and Methods : This study was researched in the 4 medical institutions: Chonnam National University, Chosun University, Bundang Seoul National University Hospital, and FM dental clinic from May, 2002 to September, 2009. Based on the total number of 60 patients whose treatment was the installation of the US II plus/GS II Osstem¢Á implants after bone graft, we evaluated success rate of implants. We analysis the distribution of patient's age and gender, edentulous area, bone type, fixture length and diameter, installation and loading time, donor site, bone graft material and method, antagonistic teeth, and survival and success rate. From these analyses we got the following results. Results : 1. In this study, the total number of patients who have been installed with US II plus implant was 27, and total of 52 implants were installed. The average age was 38.9, with 16 male, and 11 female patients. 2. The total number of patients who have been installed with GS II implant was 33, and total of 54 implants were installed. The average age was 49.7, with 24 male, and 9 female patients. 3. As for bone graft method, either autogenous bone or a mix of autogenous and heterogenous bone was used(88.4%) for US II plus. Chin, iliac, and Maxillary tuberosity were the donor sites for autogenous bone graft, and onlay method of bone graft was performed. 4. Allogenic bone or a mix of autogenous and heterogenous bone was used(77.8%) for GS II. Chin, ramus, and tibia were the donor sites for autogenous bone graft, and GBR method of bone graft was performed. 5. The duration from the installation of implants to setting of final prosthesis was average of 16 months and 10 months for US II plus and GS II respectively. Also, the final follow up period was average of 31 months and 28 months respectively. During this period, one GS II implant was removed from 1 patient due to failure of early osteointegration. 6. The survival rates were 100% and 98.1%, and success rates were 94.2% and 94.4% for US II plus and GS II implant respectively. Conclusion : On the evaluation of our clinical study, both US II plus and GS II Osstem¢Á implants showed the excellent clinical results after bone graft.

• Journal of Oral Medicine and Pain
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• 제34권3호
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• pp.325-331
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• 2009

본 연구는 측두하악장애와 연관된 두통의 유병율을 평가하고 측두하악장애와 연관된 두통의 양상을 평가함으로써 두통과 측두하악장애와의 관계를 평가하기 위하여 시행되었다. 2008년 1월부터 2008년 6월까지 측두하악장애 관련 증상을 주소로 조선대학교 치과병원 구강내과에 내원한 환자 중 일차성 두통을 가지고 있는 환자 66명을 대상으로 하여, 측두하악장애, 두통에 관한 평가를 시행하였다. 연구결과는 다음과 같다. 1. 측두하악장애을 기준으로 분류하였을 경우, 측두하악관절 및 저작근이 동시에 이환된 경우가 66명 중 36명(54.5%)로 가장 많았다. 2. 두통을 기준으로 분류하였을 경우, 긴장성 두통이 66명중 59명(89.39%)로 가장 많았다. 3. 66명 중 36명(54.5%)이 측두하악장애와 연관된 두통을 호소하였다. 4. 측두하악장애와 연관된 두통을 호소한 36명 중 19명(52.78%)이 본래 존재한 일차성 두통과는 다른 양상이 측두하악장애와 연관되어 나타난다고 하였다. 즉 측두하악장애와 일차성 두통을 동시에 가지고 있는 경우, 측두하악장애와 연관된 두통이 상대적으로 흔하게 발생된다고 볼 수 있을 것이다. 또한 그 중 과반수 이상이 기존 두통양상과는 다른 증상을 호소하는 것으로 보아, 측두하악장애와 두통의 연관성을 연구하는데 있어 새로운 두통양상에 대한 연구가 추가적으로 이루어져야 할 것이다. 또한 측두하악장애와 두통과의 연관성을 평가하기 위해서는 보다 많은 모집단을 대상으로, 보다 세분화된 기준을 가지고 대조군을 설정하여 평가하는 것이 추후에 필요할 것으로 사료된다.