• Title/Summary/Keyword: 교정적 처치

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ECTOPIC ERUPT10N OF TRANSPOSED MANDIBULAR PERMANENT LATERAL INCISOR (이소 맹출한 하악 측절치의 교정적 치험례)

  • Lim, Hyun-Hwa;Kim, Yong-Soo;Jang, Ki-Taek;Kim, Chong-Chul
    • Journal of the korean academy of Pediatric Dentistry
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    • v.27 no.3
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    • pp.438-443
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    • 2000
  • Ectopic eruption should be understood as a change in the course of the normal eruption path of a dental bud at any moment its origin. An example of this alteration is the dental transposition, a rare and more specific dental anomaly that may be defined as a change of position between two teeth. This case shows ectopic eruption of transposed mandibular lateral incisor beneath primary first molar at the first transitional period of the mixed dentition The crown of the lateral incisor has tipped distally, compelling root resorption and exfoliation of the adjacent primary cuspid and primary first molar. The reason for such eruption is not clearly understood, but it may involve; (1)trauma history, (2)prolonged retention of the deciduous teeth, (3)premature exfoliation of the deciduous teeth, and (4)genetic factor. Treatment is divided into interceptive and definitive treatment. Ectopically erupting mandibular incisor tends to become transposed with the adjacent cuspid and thus seems to warrant early orthodontic intervention. Early treatment may obviate later extraction or transposition of the incisor and canine in the permanent dentition. Timing is an important factor to be considered regarding in the correction of the lateral incisor transposition. This case advocates treatment with an active orthodontic therapy at the early stage of the mixed dentiton, before the eruption of the permanent cuspid.

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The laterally closed tunnel for the treatment of mandibular gingival recession in thin biotype patients: case report (얇은 치주 생체형 환자에서 교정 치료 후 발생한 하악 전치부 치은 퇴축에 대한 laterally closed tunnel procedure의 처치: 증례보고)

  • Kim, Hyun-Joo;Kwon, Eun-Young;Lee, Ju-Youn;Joo, Ji-Young
    • Journal of Dental Rehabilitation and Applied Science
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    • v.35 no.4
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    • pp.253-259
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    • 2019
  • In this case report, gingival recession of the mandibular anterior teeth was treated with a laterally closed tunnel technique. Two patients had altered the inclination of mandibular anterior tooth during past orthodontic treatment and had periodontal thin biotype. The recipient site was formed by tunneling method, and the connective tissue graft obtained from the palatal side was placed in the tunnel, and the margins of flap were gathered at the center of the root and sutured. Despite the thin periodontal biotype, the root coverage was successfully obtained, keratinized gingiva was increased, and aesthetics were achieved by harmonizing with surrounding tissues in terms of shape and color.

TREATMENT OF HEAVY MANDIBULAR BUCCAL FRENUM USING APICALLY POSITIONED PARTIAL-THICKNESS FLAP IN CHILD (치아 교환기 어린이에서 근단변위부분층 판막술을 이용한 하악 거대 협소대의 처치)

  • Lee, Sung-Ryong;Oh, You-Hyang;Lee, Chang-Seop;Lee, Sang-Ho;Lee, Nan-Young
    • Journal of the korean academy of Pediatric Dentistry
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    • v.31 no.4
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    • pp.665-670
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    • 2004
  • The mandibular buccal frenum becomes a problem when its attachment is too close to the marginal gingival. Heavy buccal frenum mucogingivally results in insufficient attached gingiva, inadequate vestibular depth and also difficulty in eruption of mandibular premolar. The aim of this study is to demonstrate the effectiveness of apically positioned partial-thickness flap as adequate method in order to remove heavy buccal frenum and expose impacted teeth. The author presents the case of a 12-year-old boy. He had problems that was prolonged eruption of #34, #35 due to high pull buccal frenum. After space regaining for normal eruption of #34, #35, we performed apically positioned partial-thickness flap on #34, 35 area. As a results, we confirmed that eruption of #34, #35 has been processed normally And vestibular depth, position of buccal frenum and width of attached gingival was within a normal range. Decrease in muscle pull, adequate width of attached gingiva and increased vestibular depth can be expected from this treatment.

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Case Reports of Elderly Patients in Aging Society (성이 교정환장의 치험 예)

  • Park, Yang-Ho;Cheon, Se-Hwan;Lee, Kyu-Hong;Hwang, Yong-In;Kim, Yoon-Ji;Kim, Seon-Ah
    • The Journal of the Korean dental association
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    • v.45 no.12 s.463
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    • pp.753-760
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    • 2007
  • Recently orthodontics in elderly people is continually increasing due to aging of the society arising from decrease of birth rate as well as death rate. As the elderly population grows, needs for oral health care increases, and elderly patients with poor teeth alignment need more attention with orthodontic treatment. Our study analyzes various treatment protocols for different cases of aged orthodontic patients, and following are considerations in orthodontic treatment of elderly patients. 1. Periodontal treatment should be preceded before orthodontic treatment. 2. Periodontal condition should be considered when selecting teeth for extraction 3. In dealing with the residual prosthesis, condition of prosthesis, anchorage availability, and need for size reduction, patient seconomic status should be taken into consideration. 4. Fixed retainers are recommended for retention.

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Combined Surgical and Orthodontic Treatment of Bimaxillary Dento-Alveolar Protrusion: A Report of Case (전방부분절 골절단술에 의한 상하악 전돌증의 악교정 1 예)

  • Byun, Sang-Kil;Lee, Hee-Keung;Jin, Byung-Rho;Oh, Meung-Chull;Kim, Tae-Joo;Kim, Young-Jun
    • Journal of Yeungnam Medical Science
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    • v.2 no.1
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    • pp.271-279
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    • 1985
  • The authors treated a case of bimaxillary dentoalveolar protrusion corrected by anterior segmental osteotomies: As presurgical treatment & process, closing of the upper anterior spacing with fixed appliances was worked out, cephalometric predicition & model surgery was done, and fabrication of intra-arch acrylic resin splints were made. It was not necessary to make an intermaxillary fixation with wire after surgery. Only intramaxillary fixation of anterior retracted mobile segment with resin plate was required for 8 weeks. After surgical treatment, leveling of the upper and lower arch with rectangular arch wire were accomplished as the Intrusion of anterior teeth proceeded. We will continue to improve the class II molar relationship by using class II elastics and have a good occlusiion through the orthodontic treatment.

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A Study on the Enamel Surface Texture and Caries Susceptibility in Interdentally Stripped Teeth (치간삭제 후의 법랑질 표면조도와 치아우식 감수성에 관한 연구)

  • Kim, Kyong-Nim;Yoon, Young-Ju;Kim, Kwang-Won
    • The korean journal of orthodontics
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    • v.31 no.6 s.89
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    • pp.567-578
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    • 2001
  • To investigate the difference of Texture exhibited on interproximal enamel surface with each different stripping method and the susceptibility of proximal enamel to demineralization after stripping and the application of a topical fluoride go] and sealant, one hundred human premolars, which were Previously extracted for orthodontic reasons were evaluated by means of Scanning electron microscopy and laser fluorescence. The results were as follows : 1. No matter what the initial stripping instrument was the furrows that resulted from all the stripping methods were not completely removed by careful polishing. 2. Among the enamel surfaces that were treated with three different initial abrasive instruments, followed by the same polishing method (Sof-$Lex^{(r)}$ disks), the enamel surfaces that were treated with 700 crosscut carbide bur showed the smoothest surfaces. 3. The stripped teeth, no matter what the initial stripping instrument was, were less resistant to initial demineralization than untreated teeth. But no difference in caries susceptibility according to differently stripped methods was found (p<(0.001). 4. Teeth treated with APF-gel or sealant were mote resistant to demineralization than those treated without other treatment after stripping (p<0.001). 5. Comparing groups treated with APF-gel to groups treated with sealant, the former was more resistant to demineralization than the tatter (p<0.05). In conclusion, enamel surfaces that were stripped jnterproximally were less resistant to demineralization even though various attempts were made to produce smooth, self-cleaning enamel surfaces. Therefore, additional treatment-sealant or calcifying/ fluoridating solution To the stripped enamel surfaces is recommended.

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Clinical Analysis of Surgical Results and Preoperative Management of Acute Aortic Dissection (급성 대동맥박리증의 수술성적 및 수술전 처치에 대한 임상적 고찰)

  • 현성열;박국양;이재웅;이창하;전양빈;박철현;염석란;신종환;민순식
    • Journal of Chest Surgery
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    • v.35 no.12
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    • pp.876-881
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    • 2002
  • Acute aortic dissection associated with high mortality rate has an extremely poor prognosis if early diagnosis and treatment are not received. Recently, with advanced computed tomography and echocardiography, diagnostic rate is higher and early operation is possible. Therefore preoperative medical therapy at ER(emergency room) lowered the mortality rate. This study was done to analyze the results with preoperative management at ER and operations, retrospectively. Material and Method: A series of 42 patients treated surgically for acute aortic dissections from 1991 to 2001 were included in this study. There were 18 males and 24 females. Mean age was 51.1 years. The admission course through emergency and outpatient department(OPD) was 34 and 8 respectively. Result: 26 patients underwent ascending aorta replacement-7 combined aortic valve replacements, 7 patients underwent descending aorta replacements and 9 patients received Bentall's operation. At emergency department, 20 patients received antihypertensive drugs and $\beta$-receptor blockers and 6 patients died. 22 patients did not receive antihypertensive and $\beta$-receptor block drugs and 10 patients died. There were 16(38%) overall deaths. Conclusion: Early diagnosis at ER or OPD is essential for acute aortic dissection, and it is important to select the most appropriate noninvasive interventions as possible. Therefore, preoperative drug therapy at ER is suggested according the patient conditions.

ORTHODONTIC AND/OR PHYSIOLOGIC POSITIONING OF IMPACTED MAXILLARY CENTRAL INCISORS (매복 상악 중절치의 교정적 처치에 관한 임상 증례)

  • Lim, Eun-Kyung;Choi, Yeoung-Chul
    • Journal of the korean academy of Pediatric Dentistry
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    • v.21 no.2
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    • pp.510-517
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    • 1994
  • It is a relatively common clinical experience to see a impacted maxillary central incisor. This is apparent at the dental age of about eight years and over, when the patient is in the early mixed dentition stage. The adjacent teeth may tilt toward the site of the missing tooth with resulting space closure and midline deviation. Most often, the central incisor is impacted labially. The labial impaction has been indicated as the most difficult to manage. Each of the current articles describing labial impactions shows at least one case with mucogingival recession or a minimal zone of attached gingiva. This report described the surgical uncovering and orthodontic-physiologic positioning methods with labially impacted maxillary central incisors. Through surgical exposure and direct bonding of lingual botton, the central incisors were brought into proper eruption path with elastic traction. The case 1 and 2 were treated with the physiologic erupting forces. The case 3 was applied with continuous orthodontic force. The case 1 and 2 resulted in good positioning, good esthetics and adequate width of keratinised gingiva. The case 3 resulted in local inflammation and inadequate width of keratinised gingiva.

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The Effects of Small Group Learning Using Smart Devices in Science Classes (과학 수업에서 스마트 기기를 활용한 소집단 학습의 효과)

  • Yun, Jeonghyun;Kang, Sukjin;Noh, Taehee
    • Journal of The Korean Association For Science Education
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    • v.36 no.4
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    • pp.519-526
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    • 2016
  • The purpose of this study is to investigate the influences of small group learning using smart devices in science classes on students' achievement, learning motivation, attitude toward science lessons, and perception of small group learning using smart devices. Four 11th-grade classes (N=133) at a coed high school in Seoul were randomly assigned to a control group and a treatment group. The intervention of small group learning using smart devices emphasized collaborative writing on activity sheet. The students were taught about acid, base, and neutralization reaction for six class periods. After the instructions, an achievement test, the learning motivation test, the attitude toward science lessons test, and a questionnaire on the perception of small group learning using smart devices were administered. Two-way ANCOVA results revealed that there was a statistically significant interaction effect by their previous chemistry achievement in the achievement test scores. Only low-level students in small group learning using smart devices significantly improved their achievement probably by having the opportunities to get help from high-level students. The adjusted means of the treatment group were significantly higher than those of the control group in learning motivation and attitude toward science lessons. Students' perceptions of small group learning using smart devices tended to be positive. Educational implications of this study are discussed.

Intentional Passive Eruption Combined with Scaling and Root Planing of Teeth with Moderate Periodontitis (중등도 만성 치주염에 이환된 치아의 의도적 수동 정출을 동반한 비외과적 치료)

  • Lee, Ju-Youn
    • Journal of Dental Rehabilitation and Applied Science
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    • v.29 no.2
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    • pp.195-202
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    • 2013
  • The relationship between occlusion and periodontal health has been studied extensively. Despite this, there are few reports on the effects of intentional passive eruption (IPE) using an occlusal reduction. The aim of this clinical report was to present the favorable long-term results of IPE using an occlusal reduction combined with scaling and root planing. After periodontal examination, teeth were diagnosed as moderate chronic periodontitis with intrabony defects and mobility. IPE was performed using periodic occlusal reduction combined with initial periodontal therapy. All teeth examined healed uneventfully and the patients did not complain of discomfort. It has been clinically well maintained during 8 years after completion of IPE. Overall, these results suggest that the IPE would be helpful in improving periodontal health.