• 제목/요약/키워드: fixed orthodontic treatment

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전치부 공극의 치료후 재발에 관한 임상적 고찰 (CLINICAL STUDY ON THE RELAPSE OF DIASTEMA)

  • 박효상;성재현
    • 대한치과교정학회지
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    • 제24권1호
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    • pp.95-104
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    • 1994
  • 전치부 공극의 치료법으로는 교정적인 폐쇄, 수술에 의한 방법, 보철에 의한 치료등의 방법이 있으며 이중 교정적인 폐쇄에 의한 치료법은 가장 보존적인 방법으로 많이 사용되고 있으나 그 치료이후의 보정에 많은 문제가 있었다. 저자등은 전치부 공극을 가진 3증례의 치료후 재발과정과 보정과정을 관찰한 결과 다음과 같이 요약할 수 있었다. 양 중절치가 서로 직접 연결되지 않는 보정장치의 사용은 영구보철물에 의한 경우에도 재발을 가져왔다. $\cdot$ 교정적으로 공극을 폐쇄한후, 순소대절제술, circumferential supracrestal fibrotomy 그리고 양 중절치가 서로 연결된 설측 부착 보정장치의 시행으로 좋은 유지 효과를 얻었다. 이상의 결과로 미루어 볼때 전치부 공극은 교정적 치료후, 순소대절제술, fibrotomy등을 시행한 후 반드시 양 중절치를 연결하는 고정성 보정 장치가 필요하다고 생각된다.

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Pain perception among patients treated with passive self-ligating fixed appliances and Invisalign® aligners during the first week of orthodontic treatment

  • Almasoud, Naif N.
    • 대한치과교정학회지
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    • 제48권5호
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    • pp.326-332
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    • 2018
  • Objective: This study was performed to compare the perception of pain between patients treated with passive self-ligating fixed appliances and those treated with Invisalign aligners. Methods: This prospective study conducted in Saudi Arabia used an estimated sample of 64 patients from a private dental clinic. After obtaining written informed consent, the patients were divided into two groups; one group (n = 32) was treated using passive self-ligating fixed appliances and the other group (n = 32) using $Invisalign^{(R)}$ aligners. Immediately after fitting the appliances, the patients' perception of pain was evaluated through a close-ended and coded self-administrated questionnaire by using a visual analog scale (VAS). Their responses were recorded at 4 hours, 24 hours, day 3, and day 7. Mann-Whitney U-test, Kruskal-Wallis test, and Pearson's chi-square test were performed for statistical analysis. Results: A lower percentage of patients treated with Invisalign aligners reported pain than did patients treated with passive self-ligating fixed appliances, and these differences were statistically significant (p = 0.001). Similarly, the mean VAS score for the Invisalign group was significantly lower than that for the passive self-ligating fixed appliance group at different intervals during the first week of treatment. The intensity of pain with both appliances peaked at 24 hours (mean VAS score, 3.87) and was lowest (mean VAS score, 1.62) on day 7. Conclusions: During the first week of orthodontic treatment, patients treated with Invisalign aligners reported lower pain than did those treated with passive self-ligating fixed appliances.

투명 장치의 열가소성 재료의 올바른 이해 (Physical properties of thermoplastic material for clear aligners)

  • 차정열
    • 대한치과의사협회지
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    • 제54권7호
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    • pp.542-550
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    • 2016
  • Recent technological advance have greatly expanded the application of invisible orthodontic treatment using clear thermoplastic materials. However, the final outcomes using clear aligner system do not achieve the level of final goal frequently, which results in case refinement, midcourse correction, or fixed orthodontic treatment. Therefore, mechanical properties of thermoplastic materials should be considered to improve the quality of outcomes. The purposes of this special article were to evaluate the force and stress depending on the materials, deflection and thickness of thermoplastic materials and to evaluate the mechanical properties of thermoplastic materials after repeated loading. Thickness and amount of deflection rather than products and materials showed the largest effect on force and stress. In all products, at least 159 gf of force was required for more than 1.0 mm deflection or when materials with 1.0 mm thickness were deflected. Orthodontic forces delivered by thermoplastic materials depend on the materials, thickness, amount of activation, and intra-oral condition. Proper thickness of thermoplastic materials and deflection level of tooth movement should be decided for the efficient and physiologic tooth movement.

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Correction of late adolescent skeletal Class III using the Alt-RAMEC protocol and skeletal anchorage

  • Muhammed Hilmi Buyukcavus;Omer Faruk Sari;Yavuz Findik
    • 대한치과교정학회지
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    • 제53권1호
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    • pp.54-64
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    • 2023
  • This case report describes skeletal anchorage-supported maxillary protraction performed with the Alternate Rapid Maxillary Expansion and Constriction (AltRAMEC) protocol over a treatment duration of 14 months in a 16-year-old female patient who was in the late growth-development period. Miniplates were applied to the patient's aperture piriformis area to apply force from the protraction appliance. After 9 weeks of following the Alt-RAMEC protocol, miniplates were used to transfer a unilateral 500-g protraction force to a Petit-type face mask. A significant improvement was observed in the soft tissue profile in measurements made both cephalometrically and in three dimensional photographs. Subsequently, the second phase of fixed orthodontic treatment was started and the treatment was completed with the retention phase. Following treatment completion, occlusion, smile esthetics, and soft tissue profile improved significantly in response to orthopedic and orthodontic treatment.

맹출 지연 장애환자의 고정성 보철치료 (Fixed prosthetic treatment for the patient with delayed eruption disorder)

  • 이수연;김희중;강성남
    • 구강회복응용과학지
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    • 제33권2호
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    • pp.127-134
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    • 2017
  • 전신적 혹은 국소적 원인에 의해 발생하는 치아맹출지연은 대부분 소아기에 발견되어 교정적 정출을 이용한 치료를 진행한다. 하지만 소아기때 치료를 받지 못하고 성인기로 될 경우, 교정에 의한 치아이동이 어려워지기 때문에 보철수복으로 치료를 변경할 수 있다. 보철계획을 결정하기 전 고려사항으로는 치아상실이 나타난 범위, 치아사이 근원심공간 및 악간공간, 환자의 연령대 등이 있다. 이 논문에서는 상하악 구치부 맹출지연환자를 지르코니아 부분 고정성 보철물을 통해 구강회복한 증례를 소개하고자 한다.

3차원 안모분석을 위한 저선량 Multi-detector CT 영상의 유효선량 및 화질 평가 (Evaluation of the effective dose and image quality of low-dose multi-detector CT for orthodontic treatment planning)

  • 정기정;한원정;김은경
    • Imaging Science in Dentistry
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    • 제40권1호
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    • pp.15-23
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    • 2010
  • Purpose : This study was designed to compare the effective doses from low-dose and standard-dose multi-detector CT (MDCT) scanning protocols and evaluate the image quality and the spatial resolution of the low-dose MDCT protocols for clinical use. Materials and Methods : 6-channel MDCT scanner (Siemens Medical System, Forschheim, Germany), was used for this study. Protocol of the standard-dose MDCT for the orthodontic analysis was 130 kV, 35 mAs, 1.25 mm slice width, 0.8 pitch. Those of the low-dose MDCT for orthodontic analysis and orthodontic surgery were 110 kV, 30 mAs, 1.25 mm slice width, 0.85 pitch and 110 kV, 45 mAs, 2.5 mm slice width, 0.85 pitch. Thermoluminescent dosimeters (TLDs) were placed at 31 sites throughout the levels of adult female ART head and neck phantom. Effective doses were calculated according to ICRP 1990 and 2007 recommendations. A formalin-fixed cadaver and AAPM CT performance phantom were scanned for the evaluation of subjective image quality and spatial resolution. Results : Effective doses in ${\mu}Sv$ ($E_{2007}$) were 699.1, 429.4 and 603.1 for standard-dose CT of orthodontic treatment, low-dose CT of orthodontic analysis, and low-dose CT of orthodontic surgery, respectively. The image quality from the low-dose protocol were not worse than those from the standard-dose protocol. The spatial resolutions of both standard-dose and low-dose CT images were acceptable. Conclusion : From the above results, it can be concluded that the low-dose MDCT protocol is preferable in obtaining CT images for orthodontic analysis and orthodontic surgery.

Orthodontic and orthopedic treatment for a growing patient with Tessier number 0 cleft

  • Baek, Seung-Hak;Park, Yoon-Hee;Chung, Jee Hyeok;Kim, Sukwha;Choi, Jin-Young
    • 대한치과교정학회지
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    • 제48권2호
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    • pp.113-124
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    • 2018
  • The purpose of this case report was to introduce the concept of orthodontic and orthopedic treatment for a growing patient with Tessier number 0 cleft. A 5-year-old boy patient with Tessier number 0 cleft presented congenitally missing maxillary central incisors (MXCI), a bony defect at the premaxilla, a constricted maxillary arch, an anterior openbite, and maxillary hypoplasia. His treatment was divided into three stages: management of the bony defect at the premaxilla and the congenitally missing MXCIs using a fan-type expansion plate, iliac bone grafting, and eruption guidance of the maxillary lateral incisors into the graft area for substitution of MXCIs; management of the maxillary hypoplasia using sequential facemask therapy with conventional and skeletal anchorage; and management of the remaining occlusal problems using fixed orthodontic treatment. The total treatment duration was 15 years and 10 months. Class I canine and Class II molar relationships and normal overbite and overjet were achieved at the end of treatment. Although the long-term use of facemask therapy resulted in significant protraction of the retrusive maxilla, the patient exhibited Class III profile because of continued mandibular growth. However, the treatment result was well maintained after 2 years of retention. The findings from this case suggest that interdisciplinary and customized approaches are mandatory for successful management of maxillary hypoplasia, bony defect, and dental problems in Tessier number 0 cleft. Moreover, considering the potential of orthognathic surgery or distraction osteogenesis, meticulous monitoring of mandibular growth until growth completion is important.

고정식 교정장치 장착환자에서 슬림모 칫솔과 V형 교정칫솔 간의 구강위생관리 효과 비교 (Comparison of slim bristled and V-shaped orthodontic toothbrushes in patients with fixed orthodontic appliances)

  • 최진휴
    • 대한치과교정학회지
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    • 제39권6호
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    • pp.383-392
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    • 2009
  • 본 연구는 고정식 교정장치 장착환자에서 V형 교정칫솔과 비교하여 슬림모 칫솔의 구강위생관리 효과를 평가해보기 위해 시행되었다. 고정식 교정장치를 장착하여 치료를 받고 있는 환자 34명(평균연령 $21.9\;{\pm}\;7.5$세)을 대상으로 무작위로 슬림모 칫솔(Nano silver slim $care.34^{TM}$, Aiio, Seoul, Korea)을 사용한 군과 V형 교정칫솔(Oral-B Laboratories Ltd., P&G Korea, Seoul, Korea)을 사용한 군으로 구분한 후 연구시작 시(Baseline), 2주 후, 4주 후 및 6주 후에 걸쳐서 하나의 칫솔을 교환하지 않고 변형 바스법으로 하루 2회 2분씩 닦도록 하여 치태지수, 치은염지수 및 치은출혈지수를 측정하고 비교 분석하였다. 연구 결과 6주간의 실험기간에 걸쳐 슬림모 칫솔군과 V형 교정칫솔군 간에 치태지수, 치은염지수 및 치은출혈지수 모두 통계적으로 유의한 차이를 보이지 않았다. 실험시기에 따른 변화에 대해서 두 칫솔군 모두 치태지수와 치은염지수는 연구시작 시를 기점으로 점차적으로 감소하여 4주 후에 저점을 보이고 6주 후에는 다시 상승하였고, 치은출혈지수의 경우는 V형 교정칫솔군의 경우 2주 후에 최저점을 보이다가 4주 후와 6주 후에는 점차적으로 상승하는 양상을 보인 반면 슬림모 치솔군의 경우 연구시작 시부터 6주 후까지 점차적으로 감소하는 양상을 보였다. 연령에 따른 두 칫솔군 간의 구강위생 관리 효과 비교에서 슬림모 칫솔군은 치태지수와 치은염 지수에서 20대가 10대에 비해 통계적으로 유의하게 작은 수치를 보였다 (p < 0.013). 이상의 연구 결과로 고정식 교정장치로 치료받는 환자에서 두 칫솔 모두 구강위생관리에 동일하게 효과적이었으나 20대 이상의 성인 교정환자에서 슬림모 칫솔이 V형 교정칫솔보다 치태제거 효과가 더 우수함을 보여 도움이 될 수 있음을 시사하였다.

골격성 III 급 부정교합을 가진 환자의 보철수복을 통한 기능 및 심미적 회복 (A Case Report of Prosthetic Rehabilitation for Skeletal Class III Malocclusion Patient)

  • 손미경;정재헌
    • 구강회복응용과학지
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    • 제26권3호
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    • pp.349-357
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    • 2010
  • 골격성 III급 부정교합을 가진 환자에서의 보철 치료는 환자의 전신적요인과 기타 구강내, 외적인 요인을 고려하여 정확한 치료 계획하에 시행되어야 한다. 성인에 있어서 III급 악골관계는 외과적 수술과 교정치료가 선행된 후 보철수복이 진행되도록 계획하는 경우가 일반적이지만 환자의 전신적 요인 등으로 인하여 수술이 불가능한 경우가 있을 수 있다. 이러한 경우에서는 보철로 인한 저작기능의 회복시 좀 더 안정적으로 교합을 유지, 지속할 수 있는 치료가 필요하다. 본 증례에서는 전신질환으로 인하여 수술이 불가한 III급 악골관계를 가진 환자에서 고정성 보철 수복을 통하여 경제적, 시간적으로 효율적이고 기능과 심미를 충족시키는 임상적 결과를 얻었기에 보고하고자 한다.

교정 치료 환자에 있어 항균 varnish 처치 전후의 타액 내 Streptococcus mutans 균주의 변화에 관한 연구 (CHANCE IN CONCENTRATION OF SALIVARY STREPTOCOCCUS MUTANS FOLLOWING THE APPLICATION OF VARNISH CONTAINING CHLORHEXIDINE IN ORTHODONTIC PATIENTS)

  • 장영일;김태우;정종평;남동석;양원식;서정훈
    • 대한치과교정학회지
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    • 제24권3호
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    • pp.659-672
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    • 1994
  • Dental caries is one of the most prevalent dental diseases in Korea and its prevention is very important in orthodontic therapy. For the cleansing action of saliva itself and/or tooth-brushing is lowered in patient with fixed orthodontic appliance, oral hygiene of the patient becomes worse, which provides more favorable environment for micro-organisms. Chlorhexidine, one of the series of bisguanide, has been reported to be strong antimicrobial agent and very effective on Streptococcus mutans. The purpose of this study is to evaluate the possibility of chlorhexidine as a anticariogenic agent in fixed orthodontic therapy. We used the varnish containing chlorhexidine as a main ingredient for the chemical control of salivary S.mutans in patients with fixed appliance therapy We applied the varnish containing chlorhexidine on the labial and interproximal surface of the teeth before bonding and banding teeth of our patients(N=20) and compared to control group patients(N=20). Before the application of chlorhexidine varnish and four times periodically after the completion of fixed appliance set-up, we sampled saliva of both group patients and incuvate S.mutans for 24 hours. In the culture study of sampled saliva, counting the number of S.mutans colonies, we founded as follows : 1. In patients with fixed appliance therapy, the risk of dental caries increase when it compared to that of preorthodontic treatment ; The number of salivary S.mutans increase in Patient's oral cavity. 2. The experimental agent that contain chlorhexidine is effective to reduce the number of salivary S.mutans. 3. For the effect of this agent is not ever-lasting, periodical application is needed, and additional study for economical interval and number of application is needed.

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