• Journal of Periodontal and Implant Science
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• 제27권4호
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• pp.767-783
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• 1997

Guided tissue regeneration, bone graft procedures, and application of growth factors have been used to regenerate lost periodontal tissues. Recently, enamel matrix derivative has been introduced into periodontal regeneration procedures in expectation of promoting new bone and cementum formation. The purpose' of this study was to evaluate the effect of enamel matrix derivative in 1-wall intrabony defects in beagle dogs. For this purpose, each dog was anesthesized using intravenous anesthesia and mandibular 1st, 3rd premolars were extracted. 2 months later, the 1-wall intrabony defects(mesio-distal width: 4mm, depth: 4mm) were created on the distal side of 2nd premolars and mesial side of 4th premolars. The control group was treated with debridement alone, and experimental group was treated with debridement and enamel matrix derivative application. The healing processes were histologically and histometrically observed after 8 weeks and the results were as follows : 1. The length of junctional epithelium was $0.94{\pm}0.80mm$ in the control group, $0.57{\pm}0.42mm$ in the experimental group, with no statistically significant difference between groups. 2. The connective tissue attachment was $1.36{\pm}0.98mm$ in the control group. $0.38{\pm}0.43mm$ in the experimental group, with statistically significant difference between groups(P<0.05). 3. The new cementum formation was $2.49{\pm}1.06mm$ in the control group, $3.59{\pm}0.74mm$ in the experimental group. with statistically significant difference between groups(P<0.05). 4. The new bone formation was $1.92{\pm}0.97mm$ in the control group, $2.32{\pm}0.59mm$ in the experimental group. with no statistically significant difference between groups. Within the limitation to this study protocol, enamel matrix derivative application in 1-wall intrabony defect enhanced new cementum formation. Although there was no statistically significant difference, enamel matrix derivative also seems to be effective in inhibition of apical migration of junctional epithelium and new bone formation.

• 대한치과의료관리학회지
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• 제8권1호
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• pp.15-23
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• 2020

The aim of this study is to identify future-oriented tasks for Korean dental hygienists based on a literature review. A literature search is performed using 14 keywords related to tasks carried out by dental hygienists, and included articles published from 2000 to 2019 in the databases KISS, RISS, DBpia, NDSL, Papersearch, Pubmed, and Google Scholar. Six reviewers assessed the titles and abstracts of articles, and an article was selected if the study was considered to cover future-oriented tasks for Korean dental hygienists. Based on the results six local studies and two foreign studies were used for literature review and data extraction. In total, 38 tasks were classified as future-oriented tasks of dental hygienists according to the following criteria: 1) tasks that were specifically referred to as future-oriented tasks, and 2) tasks that could be classified as future-oriented tasks although no specific reference was made. Of these, the most frequently mentioned tasks were measuring periodontal pocket depth, dental hygiene assessment, providing dietary advice, infiltration anesthesia, and root planing. These were extracted from five of the eight studies, including both local and foreign studies. Dental hygiene planning, emergency, emergency management, and smoking cessation were the next most common tasks based on four studies. Even though some of these future-oriented tasks for Korean dental hygienists are included in the dentistry curriculum, and are currently performed as clinical practice for dental hygienists. Nonetheless, the reference to the legal scope is unclear. It is necessary to reconsider the scope of tasks of dental hygienists to reflect changes in domestic and foreign dental care delivery, thereby contributing to the oral health promotion of the public, where safety is guaranteed under legal protection.

• Archives of Plastic Surgery
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• 제37권6호
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• pp.831-834
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• 2010

Purpose: Congenital absence of the vagina is a rare case. It occurs as a result of Mullerian duct aplasia or complete androgen insensitivity syndrome. The reconstructive modality includes skin graft, use of intestine and various methods of flap. We report a patient who underwent vulvoperineal fasciocutaneous flap to reconstruct congenital absence of the vagina, while the external genitalia and ovaries are normal. Methods: A 26-year-old woman presented with vaginal agenesis. Under general anesthesia, a U-shaped incision was made between the urethral meatus and the anus. The new vaginal pocket was created up to the level of the peritoneal reflection between the urinary structures and the rectum. Next, the vulvoperineal fasciocutaneous flaps were designed in a rectangular fashion. Flap elevation was begun at the lateral margin which the adductor longus fascia was incised and elevated, and the superficial perineal neurovascular pedicle was invested by the fascial layer. The medial border was then elevated. A subcutaneous tunnel was created beneath the inferior of the labia to rotate the flaps. The left vulvoperineal flap was rotated counterclockwise and the right was rotated clockwise. The neovaginal pouch was formed by approximating the medial and lateral borders. The tubed neovagina was then transposed into the cavity. Results: In 3 weeks, the vaginal canal remained supple After 6 weeks, the physical examination showed normalappearing labia majora and perineum with an adequate vaginal depth. A year after the operation, the patient had a 7 cm vagina of sufficient width with no evidence of contractures nor fibrous scar formation. The patient was sexually active without difficulty. Conclusion: Although many methods were described for reconstruction of vaginal absence, there is not a method yet to be approved as a perfect solution. We used the vulvoperineal fasciocutaneous flap to reconstruct a neovagina. This method had a following merits: a single-stage procedure, excellent flap reliability, the potential for normal function, minimal donor site morbidity and no need for subsequent dilatation, stents, or obturators. We thought that this operation has a good anatomic and functional results for reconstruction of the vagina.

• 대한소아치과학회지
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• 제41권4호
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• pp.283-291
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• 2014

심한 치과적 공포와 불안으로 치과적 행동조절에 문제를 일으키는 환자의 경우, 진정법과 같은 약물적 행동 조절 방법이 요구될 수 있다. 이번 연구에서는 소아 환자에서 세보플루란 흡입진정시에 추가적으로 0.1 mg/kg의 미다졸람을 근육주사하였을 때 진정 깊이와 심폐기능에 미치는 영향을 알아보기 위해 2013년 1월부터 2014년 3월 사이 본원에서 세보플루란 흡입진정 하에 치과치료를 받은 환자의 마취기록지를 후향적으로 분석하였다. 3~6세의 환자를 대상으로 하였으며, 세보플루란 단독 사용군이 18명, 미다졸람 병용 투여군이 18명이었다. 미다졸람 병용 투여군의 평균 엔트로피 값은 세보플루란 단독 사용군에 비해 10정도 낮게 측정되었으나 통계적 유의성은 없었으며(p > 0.05), 분당 심박수와 평균동맥압은 미다졸람 병용 투여군이 세보플루란 단독 사용군에 비해 높은 값을 보였다(p < 0.05). 즉, 0.1 mg/kg의 미다졸람 근육주사는 세보플루란 흡입진정시 진정의 질을 높이는데 큰 도움이 되지는 않았으며, 추후 세보플루란 흡입진정과 병용 사용하기에 적절한 미다졸람의 용량을 결정하기 위한 추가적인 연구가 필요할 것으로 사료된다.

• Journal of Dental Anesthesia and Pain Medicine
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• 제24권1호
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• pp.19-35
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• 2024

Background: This study investigated a safe and effective bolus dose and lockout time for patient-controlled sedation (PCS) with dexmedetomidine for dental treatments. The depth of sedation, vital signs, and patient satisfaction were investigated to demonstrate safety. Methods: Thirty patients requiring dental scaling were enrolled and randomly divided into three groups based on bolus doses and lockout times: group 1 (low dose group, bolus dose 0.05 ㎍/kg, 1-minute lockout time), group 2 (middle dose group, 0.1 ㎍/kg, 1-minute), and group 3 (high dose group, 0.2 ㎍/kg, 3-minute) (n = 10 each). ECG, pulse, oxygen saturation, blood pressure, end-tidal CO₂, respiratory rate, and bispectral index scores (BIS) were measured and recorded. The study was conducted in two stages: the first involved sedation without dental treatment and the second included sedation with dental scaling. Patients were instructed to press the drug demand button every 10 s, and the process of falling asleep and waking up was repeated 1-5 times. In the second stage, during dental scaling, patients were instructed to press the drug demand button. Loss of responsiveness (LOR) was defined as failure to respond to auditory stimuli six times, determining sleep onset. Patient and dentist satisfaction were assessed before and after experimentation. Results: Thirty patients (22 males) participated in the study. Scaling was performed in 29 patients after excluding one who experienced dizziness during the first stage. The average number of drug administrations until first LOR was significantly lower in group 3 (2.8 times) than groups 1 and 2 (8.0 and 6.5 times, respectively). The time taken to reach the LOR showed no difference between groups. During the second stage, the average time required to reach the LOR during scaling was 583.4 seconds. The effect site concentrations (Ce) was significantly lower in group 1 than groups 2 and 3. In the participant survey on PCS, 8/10 in group 3 reported partial memory loss, whereas 17/20 in groups 1 and 2 recalled the procedure fully or partially. Conclusion: PCS with dexmedetomidine can provide a rapid onset of sedation, safe vital sign management, and minimal side effects, thus facilitating smooth dental sedation.

• 디지털융복합연구
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• 제11권8호
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• pp.219-225
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• 2013

본 연구는 아동의 안면 연부조직에 발생되는 열상에 영향을 미치는 요인을 확인하기 위한 서술적 조사 연구이다. 자료 수집은 2010년 4월부터 2011년 5월까지 인천 I 종합병원의 응급실에 내원 후 성형외과에 의뢰되어 치료한 소아 안면열상 환자 126명을 대상으로 실시하였다. 분석결과 모든 연령별로 남녀의 발생 빈도는 유의한 차이를 보였다(p<.05). 손상 발생 장소는 집 밖에서 발생된 경우가 49%, 손상의 원인은 미끄러짐(42%), 부딪침(40%)이 많았다. 계절별로는 여름이 30.2%로 가장 많았고, 발생 시간대는 12~16시가 56%로 가장 많이 발생되었다. 손상 후 내원시간은 1시간 이내의 경우가 대부분(83%) 이었다. 손상 부위는 이마부위 발생 빈도가 가장 높게 나타났고(26%), 손상의 깊이는 피하조직까지 손상된 경우가 54%, 손상의 길이는 1~2cm가 46%로 가장 많았다. 손상 국소마취를 통해 봉합치료한 경우는 40%, 동반골절이 있는 경우는 4명(1.53%)이었다. 결론적으로 안면 열상 후 봉합으로 영구적인 상흔을 남길 수 있으며, 외모의 기형을 초래할 수 있으므로 발생 상황과 손상기전에 대한 상세한 조사를 통해 보다 안전한 생활환경을 조성하는 방법을 모색하고 아동의 사고 발생을 예방하기 위한 안전 교육이 필요하겠다.

• 한국임상수의학회지
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• 제19권3호
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• pp.277-282
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• 2002

본 실험은 각각의 마취방법이 체성감각유발전위 (SEPs) 파형에 미치는 영향을 알아보고 SEP의 측정에 적절한 마취방법을 찾고자 시행하였다. 임상적으로 건강하고 크기와 나이가 비슷한 다섯 마리의 잡종견을 대상으로 SEPs를 측정하고 각각의 측정값을 분석하였다. SEPs측정을 위해 후 경골신경을 자극하였고 요추 5-6번 사이에서 channel 1의 LP1과 LN1, 흉추 11-12사이에서 channel 2의 TP1, TN1을 기록하였다. 실험에 사용한 마취방법 중. Acepromazine + Thiopental Na + Isoflurane, Acepromazine + Propofol + Isoflurane, Diazepam + Xylazine, Xylazine + Ketamine, Acepromazine + Propofol infusion, 및 Propofol infusion등의 방법만이 SEPs측정이 가능하였고, 파형은 명확하였으며, 측정에 요구되어지는 일정 시간인 25분 이상 동안 마취 유지가 가능하였다. 또한 각 마취군에서의 SEPs 파형을 Acepromazine + Thiopental Na + Isoflurane군과 비교해 보았을 때 latency의 경우, Acepromazine + Propofol + Isoflurane군의 ST(stimulating point)-LN1, SP-TP1, Diazepam + Xylazine 군의 Chl-Ch2, Xylazine + Ketamine군의 Chl-Ch2, Acepromazine + Propofol infusion군의 ST-LP1와 Chl-Ch2에서 부분적으로 유의적인 차가 있었다. Conduction velocity의 경우, Acepromazine + Propofol + Isoflurane군의 ST-LN1, Diazepam + Xylazine군의 Chl-Ch2, Xylazine + Ketamine군의 Chl-Ch2, Acepromazine + Propofol infusion군의 ST-LP1, 그리고 Propofol infusion군의 ST-LN1의 측정값에서 유의적인 차가 있었지만 전반적으로는 전체적인 파형의 유의적인 변화는 없었다. 이상의 결과를 토대로 SEPs 측정시 흡입마취로는 Acepromazine + Thiopental + Isoflurane과 Acepromazine + Propofol + Isoflurane, 주사마취로는 Diazepam + Xylazine과 Xylazine + Ketamine, 점적마취로는 Acepromazine + Propofol infusion과 Propofol infusion 방법이 사용 가능한 것으로 확인되었다.

• 대한소아치과학회지
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• 제34권1호
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• pp.91-98
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• 2007

Chloral hydrate (CH)와 Hydroxyzine의 경구 복용을 이용한 진정과 Midazolam을 점막하 주사로 추가 투여한 진정을 Bispectral(BIS) index를 이용하여 두 진정법의 진정 깊이의 차이를 비교 평가하고자 하였다. 모든 환아는 2세-6세 사이의 미국 마취과학회 신체평가 등급 I의 건강한 환아로 진정 요법이 요구되었으며 국소마취와 최소 2개 이상의 치아에 대한 수복 치료가 치료에 포함되었다. 무작위 방법으로 환아를 CH(60mg/kg)와 Hydroxyzine(1mg/kg)을 복용하는 군과 CH(60mg/kg)와 Hydroxyzine(1mg/kg)을 복용하고 점막하 주사로 Midazolam(0.1mg/kg)을 추가 투여하는 군으로 나누었다. 진정 요법 동안 Nitrous Oxide는 두 군 모두 50%로 유지하였다. 환아 행동 평가는 녹화된 비디오 테이프를 보며 매 2분마다 Behavior scale을 이용하여 quiet(Q), crying(C), movement(M), or struggling(S)으로 측정하였다. 두 군의 진정 깊이 비교 평가를 위해 치료가 시작된 시점부터 40분 동안 2분 간격으로 측정한 Pulse rate(PR), Saturation percentage of $O_2(SpO_2)$, behavior scale과 매 2분 단위로 계산된 평균 BIS index를 t-test와 Levene's test를 이용하여 분석하였다. 두 군의 평균 BIS index와 BIS index의 분포는 유의할 만한 차이를 보였다(P<0.001). 점막하 주사로 Midazolam을 추가 투여한 군에서 평균 BIS index가 더 낮은 값을 가지며 표준 편차가 작았다 PR와 $SpO_2$는 두 그룹 모두 정상범위내의 값을 보였다. 점막하 주사를 이용한 Midazolam의 추가 투여는 안전성을 크게 침해하지 않는 범위 내에서 진정 깊이를 깊게 해주며 안정적인 진정을 이루게 함으로써 보다 바람직한 진정을 유도해 줄 수 있는 것으로 사료된다.

• Tuberculosis and Respiratory Diseases
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• 제63권3호
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• pp.261-267
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• 2007

배경: 삼출성 흉수 환자의 적지 않은 빈도에서 원인이 불명확하다. 삼출성 흉수를 진단하기 위한 다양한 방법 중에서 내과적 흉강경은 국소마취 하에서 시행할 수 있으며 악성 종양이나 결핵에서 진단율이 높으며, 진정제와 국소마취상태에서 시행할 수 있다. 본 연구의 목적은 내과적 흉강경의 진단적 정확성과 안전성에 대해 알아보고자 하였다. 대상 및 방법: 2005년 10월부터 2006년 9월까지 25명의 원인을 알 수 없는 삼출성 흉수 환자를 대상으로 내과적 흉강경을 시행하였다. 성별, 연령 시술 전 폐기능, 흉부 측와위 사진에서 흉수의 두께(LDR) 등의 정보를 얻었다. 내과적 흉강경 시행도중 활력징후를 기록하였고 동맥혈 가스 분석을 5차례 시행하여 혈역학적 상태와 산-염기 균형 상태를 파악할 수 있도록 하였다. 결과: 환자의 평균 연령은 56.8(22-79)세였고, 흉부 측와위 사진에서 흉수의 두께는 27.49 mm이었다. 내과적 흉강경을 이용한 흉막 조직 생검으로 24명(96%)이 진단되었으며, 결핵성 흉막염이 9명(36%), 악성 흉수가 8명(32%), 부폐렴성 흉수가 7명(28%)이었다. 내과적 흉강경으로 흉수의 원인을 알아낼 수 없었던 1명(4%)은 추후에 심장막 조직 생검으로 결핵으로 진단되었다. 내과적 흉강경 중 혈압, 심박동수, 산-염기 상태의 변화는 보이지 않았다(p>0.05). 결론: 내과적 흉강경은 진단율이 높으면서도 안전한 시술이다.

• Journal of Periodontal and Implant Science
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• 제29권1호
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• pp.1-14
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• 1999

Ursodeoxycholic acid(UDCA) is a hydrophilic gall bladder acid and has been used as a effective drug for liver disease related to in1munity. This drug inhibits secretions of IL-2, IL-4, and $IFN-{\gamma}$ from T-cells and production of immunoglobulin from B-cells. Also it has been reported that UDCA inhibits production of IL-1 related to the progression of periodontal disease and activation of collagenases. The purpose of the present study was to elucidate the effects of UDCA on inhibition of periodontal disease progression using clinical, microbiological and histometrical parameters. Twelve pure bred, 16 month-old-beagle dogs were used in the study. After ligature-induced periodontal diseases were formed, experimental drugs were applied twice a day and then the results of clinical, microbiological, and histometrical parameters were measured at baselie(initiation of experiment) , 4weeks and 8weeks. The gel with UDCA(concentration 0.5%, 5% 3 dogs in each) was applied to experimental group, chlorhexidine to positive control group(3dogs) and the gel without UDCA(base) to negative control group. After induction of general anesthesia, the maxillary 2nd, 3rd premolars and 1st molar and the mandibular 2nd, 3rd, 4th premolars and 1st molar were ligated in one side selected randomly and were not ligated in the opposite side. The plaque index(PI), gingival index(GI), pocket depth(PD) and gingival crevicular fluid(GCF) volum were measured clinically. The PI and GI were measured at 3 buccal points of all experimental teeth and the GCF was measured only at the 3rd premolar in the maxilla and the 4th premolar in the mandible. In the microbiological study, the samples extracted from the 3rd premolar of the maxilla and the 4th premolar of the mandible at the center of buccal surface were analyzed aerobics, anaerobics and Streptococcus colony forming units, After clinical and microbiological examination at 8weeks, the dogs were sacrificed by carotid artery perfusion. The samples were fixed and sectioned including interproximal area, and the distance from cementoenamel junction(CEJ) to alveolar crest was measured. The results were that PI, GI and PD increased until 4 weeks and decreased at 8 weeks in three groups but the differences between all the groups were not significant. The 0.5% UDCA in non-ligated group showed remarkable decrease of GCF. The experimental group applied 5% UDCA decreased the number of aerobics and anaerobics. The distance from CEJ to alveolar crest was greater in the negative control group on both ligated and non-ligated sides, but the differences were not significant stastically.