• Journal of Dental Rehabilitation and Applied Science
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• v.31 no.4
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• pp.378-386
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• 2015

Overdenture has the advantage of improving the stability and retention of the denture but the abutment may be easily affected by caries or periodontal disease and the thin denture can be easily broken. The magnetic attachment overdenture has a high vertical retention but a low horizontal retention, thus, exerting a less disruptive force to the abutment or implant and shows less abrasion or damage compared to other mechanical retainers. Denture fractures in overdenture is caused by the thin denture base as the attachment is inserted, but it may also be caused by the difference in detrusion between soft tissue and hard tissue, and between an implant and a natural tooth. To compensate this shortcoming, a magnetic attachment with a silicone ball inserted in the magnet was developed as we report a successful case using this specific type of magnetic attachment overdenture.

• Journal of dental hygiene science
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• v.5 no.4
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• pp.251-258
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• 2005

The objective of this research was to analyze curriculum of dental hygiene education program for B.S degree in US and compare with Korea and Japan. The curriculum was classified six domain based on job classification and National Board Examination in Korea. Oral biology content included oral anatomy,dental anatomy,oral histology,oral pathology. Oral physiology was excluded. Clinical dentistry content included only oral radiology, periodontics, dental material,pain control. Most program integrated clinical dental hygiene courses. Most program provided dental practice management content and dental hygiene research courses. Diverse program such as A.S degree,B.S degree,degree completion,distance education programs enabled students to develop their career effectively.

• Journal of dental hygiene science
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• v.7 no.1
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• pp.49-54
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• 2007

This research was conducted to provide standardization method for new dental hygiene curriculum by identifying the overlapping of education content of the Department of Dental Hygiene and analytic syllabus. To complement these overlapping education programs, I would like to make some proposals. First, unified course shall be provided by compromising specific terms of overlapping subject, overlapping curriculums for the necessary skills required for job analysis of dental hygienist and overlapping class time. This shall increase the efficiency the class time and required curriculums. Next, proactive and continuos research for standardized approach to the Department of Dental Hygiene education content is necessary and Dental Hygiene academic circle shall build trust.

• Journal of Dental Rehabilitation and Applied Science
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• v.28 no.3
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• pp.277-290
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• 2012

Dental implants are universal restorative method on edentulous site in oral cavity and generally recognized by patients as well as clinicians. Rapid bone resorption of labial portion of maxillary anterior area is performed due to dental trauma, chronic periodontitis, and so on. Accordingly, Implants on maxillary anterior alveolar ridge with narrow labiopalatal width would lead to bony defects of dehiscence or fenestration. In this case, guided bone regeneration procedure is used to augment maxillary anterior alveolar ridge. It can have mechanical and biological advantages to mix tissue adhesive with bone graft materials in guided bone regeneration procedure. In these cases, when the dehiscence or fenestration defects was occurred by dental implants on maxillary anterior alveolar ridge with narrow labiopalatal width, guided bone regeneration procedures were performed with various combination of particle bone graft materials(allograft, xenograft, and alloplast) mixed with fibrin glue, excepting autogerous bone. We reported that all of 4 cases showed favorable alveolar ridge augmentations.

• Journal of Dental Rehabilitation and Applied Science
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• v.33 no.1
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• pp.25-33
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• 2017

The lower $2^{nd}$ molar eruption is beginning to mesiolingually, then rotate to distobuccally so it has a tendency to be tilted and impacted mesially. Signs and symptoms of impacted $2^{nd}$ molar are similar to impacted $3^{rd}$ molar's. However, treatment plan for impacted $2^{nd}$ molar is different from that of impacted $3^{rd}$'s. The former is the preservation and uprighting of $2^{nd}$ molar so that it could act to recovery of mastication, symmetrical facial growth, maintaining the symmetry of dental arch, stable occlusion, while the latter is the extraction of tooth. If the uprighting treatment is planned, most proper protocol of treatment and the additional treatment opition should be applied with consideration for it's crown exposure, present of $3^{rd}$ molar which interrupt the uprighting process, extrusion of opposite tooth. Although it could not improve the esthetic result, it could prevent many dental problems. Therefore, uprighting for impacted lower $2^{nd}$ molar is meaningful treatment.

• Journal of Dental Rehabilitation and Applied Science
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• v.27 no.4
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• pp.449-454
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• 2011

Recently, jawbone osteonecrosis has been largely reported as a potential adverse effect of bisphosphonate (BP)administration. Currently available published incidence data for BRONJ are based on retrospective studies and estimates of cumulative incidence range from 0.8 to 12%. The mandible is more commonly affected than the maxilla (2:1 ratio), and 60-70% of cases are preceded by a dental surgical procedure. The signs and symptoms that may occur before the appearance of clinical evident osteonecrosis include changes in the health of periodontal tissues, non-healing mucosal ulcers, loose teeth and unexplained soft-tissue infection. Tooth extraction as a precipitating event is a common observation. The significant benefits that bisphosphonates offer to patients clearly surpass the risk of potential side effects; however, any patient for whom prolonged bisphosphonate therapy is indicated, should be provided with preventive dental care in order to minimize the risk of developing this severe condition.

• Journal of the korean academy of Pediatric Dentistry
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• v.33 no.3
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• pp.504-509
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• 2006

Pediatric dentistry is differentiated from other fields of dentistry in that it provides comprehensive dental care for children and adolescents. In early days, pediatric dentistry used to be confined to the caries treatment and extraction of primary teeth However, the practice spectrum of pediatric dentistry has broadened to the orthodontic, surgical, esthetic and preventive treatments A survey that contained questions about practice patterns were mailed to 50 pediatric dentists, and 21 surveys were returned. Results were as follows: 1. The average number of patients per week was 82.4, and the average number of treated teeth per patient was 2.35. 2. Preventive treatments comprised 15.7%, restorative treatments 55.7%, endodontic treatments 15.6%, surgical treatments 10.5%, and orthodontic treatments 2.4%. 3. In restorative treatments, amalgam restoration comprised 3.8%, glass ionomer 5.5%, composite resin 63.0%, and stainless steel crown 27.7%.

• Journal of Life Science
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• v.20 no.3
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• pp.321-325
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• 2010

Among endogenous oral microflora, Streptococcus mutans plays a critical role in dental plaque formation, which mainly contributes to the development of caries and periodontal disease. Phytochemicals are plant-derived chemical compounds that have been studied as beneficial nutrients to human health. The purpose of this study was to determine the effects of phytochemicals against S. mutans. Among them, oleanolic acid (OA) and 5-(hydroxymethyl)-2-furfural (HF) from Thomson seedless raisins were tested for anti-microbial effects against various clinically important bacteria. OA inhibited the growth of Gram-positive bacteria, but not Gram-negative bacteria. However, HF did not display any antibacterial effect against any of the strains tested. OA also exhibited inhibitory effects in surface adherence and biofilm formation of S. mutans. The results suggest that OA can be utilized as a potential anti-plaque and anti-caries agent by controlling the physiological characteristics of S. mutans on teeth.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.7 no.2
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• pp.103-106
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• 2011

다운 증후군(Down syndrome, Trisomy 21)은 가장 흔하게 나타나는 증후군으로 대략 1/1000의 확률로 태어난다. 세 개의 유전적 유형이 있지만, 95% 정도가 3개의 21번 염색체를 갖는 비분리 염색체 유형이다. 주된 구강 증상으로는 거대설, 균열설, 과잉치, 결손치, 왜소치, 유치와 영구치의 맹출지연 그리고 이에 따른 부정교합 등이 있다. 75%의 환자에서는 어린 나이에 치주질환에 이환되기 쉬우며, 치아우식증에는 낮은 이환율을 보인다는 보고가 있다. 급성 림프구성 백혈병(Acute Lymphoblastic Leukemia)은 주로 어린이에서 나타나며, 특히 다운 증후군 환자에서의 발병율은 정상인에 비해 20배 높다. 치은비대와 출혈의 양상이 주로 나타나며, 간혹 상악골과 구개골에 종괴가 관찰 되기도 한다. 본 증례에서는 서울대학교치과병원 소아치과에 내원한 환자 중 급성림프구성 백혈병을 앓고 있는 다운 증후군 환아가 있어 이를 보고하고자 한다.

• Journal of dental hygiene science
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• v.12 no.5
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• pp.486-492
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• 2012

Immunostaing intensity of Dynamin II protein in ameloblast during mouse tooth development showed a significant increase of 48% at the postnatal day 3 and a significant increase of 50% at the postnatal day 5 as compared with the postnatal day 1, but showed a significant decrease of 16% at the postnatal day 7 and a significant decrease of 12% at the postnatal day 10 as compared with the postnatal day 1. From the above results, Dynamin II had relevance to secretion of amelogenin, ameloblastin, enamelin and matrix metalloproteinase-20 proteins for enamel formation in ameloblast. Dynamin II may be involved in the transport of vesicles containing proteins for enamel formation through the acceleration of vesicular formation and may be had a good possibility of secretory regulation of proteins for enamel formation in ameloblast. Therefore, Dynamin II have potential for being used in the field of gene theraphy for periodontal disease and in the regeneration for enamel and dentin tissues lost to dental caries.