• 제목/요약/키워드: Clear Aligner

검색결과 26건 처리시간 0.051초

세라핀 투명교정 시스템을 활용한 교합 장애 및 치아 결손 증례의 치료 (Implant surgery and prosthodontic treatment of Temporomandibular disorder patient combined SERAFIN clear aligner system : Clinical case report)

  • 장원건
    • 대한심미치과학회지
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    • 제31권1호
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    • pp.11-18
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    • 2022
  • 임플란트 치료 혹은 보철수복치료를 원하는 성인환자의 경우 오랜 기간동안 변화하고 적응된 구강환경으로 인해 다양한 잠재적인 문제들을 가지고 있다. 환자 자신은 특별한 문제나 불편함 없이 지내왔지만 변화된 치아의 교합상태, 치주상태, 교합면 형태 변화 및 치아의 이동 등으로 인해 임플란트 수술 및 보철수복, 혹은 일반 보철 수복 치료를 통해 적절한 교합 상태로 개선하는 것이 어려운 경우가 많다. 치료계획을 세우고 치료하는 술자의 입장에서는 현재 상태를 그대로 유지하는 치료를 하는 것이 편할 수 있지만 치료 후 발생할 수 있는 여러 문제들을 생각하면 임플란트 수술 및 보철수복 전, 그리고 일반 보철 수복 전에 환자의 구강환경을 개선하는 치료를 우선하는 것이 아주 중요한 경우가 많이 있다. 치아의 배열과 교합개선을 위해 치료 전 교정치료가 필요한 경우는 치료에 대한 환자의 동의를 얻는 것이 쉽지 않고 비록 환자가 동의를 하더라도 불편하거나 심미적이지 않은 교정치료방법으로 인해 환자들이 치료를 포기하는 경우도 많이 있다. 디지털이 세계 전 분야의 큰 영향을 주면서 치의학에도 디지털을 활용한 치료방법들이 많이 소개되고 있으며 임플란트 수술가이드, 다양한 수복물 제작, 수술 진단등 치과 전반에도 디지털을 활용한 치료들이 대중화 되고 있다. 치과교정 분야에서는 CAD-CAM을 이용한 간접 접착법의 활용, 진단자료의 활용등으로 시작된 디지털 분야가 투명교정장치의 개발과 사용을 통해 그 영역이 상당히 넓어지고 있다. 투명교정시스템은 심미적이며 사용상의 불편함이 적고, 구강관리가 용이한 장점등을 통해 성인, 중노년 층 환자들이 거부감 없이 사용하고 있으며 이를 통해 임플란트 보철 치료가 필요한 환자들에게 효과적으로 사용되고 있으며 그 사용이 점점 증가하고 있다. 이번 증례보고에서는 교합장애 및 치아의 위치 변화로 인해 임플란트 수복치료가 필요한 50대 여자 환자의 임플란트 보철 복합 증례에서 세라핀 투명교정시스템을 통해 임플란트 수복을 위한 구강환경을 개선하고 임플란트 수술 및 보철수복을 성공적으로 하였으며 이를 보고하고자 한다.

일축인장시험을 통한 투명교정장치용 고분자 소재의 역학적 특성 분석 (Analysis of Mechanical Properties of Polymer Material for Clear Aligner using Uniaxial Tensile Test)

  • 정지영;제태진;전은채
    • 한국기계가공학회지
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    • 제17권5호
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    • pp.64-69
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    • 2018
  • Clear aligners are popular in the field of dental orthodontic treatment because they offer a discreet alternative to braces due to their use of transparent materials. They are formed from flat transparent polymer materials by hot pressed molding. It is necessary to know the mechanical properties of the polymer materials to be able to form the exact shapes of the clear aligners. However, this information is not publicly available. In this study, we present a method to reliably measure the mechanical properties of clear aligner polymer materials and analyze the factors effecting these mechanical properties. First, we surveyed standards related to the mechanical properties of polymer materials to obtain reliable data. Consequently, ISO 527 was selected for use in this study because of the size and thickness of the flat transparent polymer material. The uniaxial tensile tester was constructed and it was verified whether displacement of a crosshead could be regarded as a displacement of gauge-length by optical analysis. Uniaxial tensile tests of three thicknesses from three different companies were performed and each engineering stress-strain curve was measured. Tensile strengths and elastic moduli were obtained by analysis of the stress-strain curves. The tensile strength and elastic modulus of ISO 527 was found to be approximately 50MPa and 2.3GPa, respectively. Both values showed material and thickness dependency.

Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients

  • Suh, Heeyeon;Garnett, Bella Shen;Mahood, Kimberly;Mahjoub, Noor;Boyd, Robert L.;Oh, Heesoo
    • 대한치과교정학회지
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    • 제52권3호
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    • pp.210-219
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    • 2022
  • Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure.

전치부의 경미한 공간부조화 개선을 위한 가철성 장치의 적용 예 (THE USE OF REMOVABLE APPLIANCE FOR THE CORRECTION OF MINOR IRREGULARITIES IN ANTERIOR SEGMENT)

  • 곽아람;최영철;박재홍;최성철;김광철
    • 대한소아치과학회지
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    • 제34권4호
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    • pp.685-693
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    • 2007
  • 골격성 부조화가 없는 I급 부정교합은 치아-악궁 간의 크기 차이에 의한 총생(crowding)이나 공극(spacing)이 주된 문제점이다. 이와 같은 경미한 공간 부조화를 개선시키고자 할 때, 치열의 종류, 치아-악궁크기 부조화의 양, 환자의 협조도, 또는 환자의 요구 등에 따라 치료 방법은 다양할 수 있다. 본 증례보고에서는 I급 구치부 관계를 지니면서 전치부의 치아-악궁크기 부조화의 양이 크지 않은 영구치열에서 상하악 전치부의 경미한 총생이나 공극이 관찰되는 경우에 사용할 수 있는 clear aligner와 spring aligner 장치의 이용에 관하여 보고하고자 한다. 이와 같은 장치들의 임상 적용에는 몇 가지 제한적인 조건이 있기는 하지만, 잘 선택된 증례에서는 매우 유용하며 편리하게 이용될 수 있다. 특히 총생이 존재하는 경우에는 이를 해소시킬 공간이 치열 내에서 확보되어야 하므로, 확실한 분석과 진단으로 치아 인접면 삭제의 양을 정확히 결정하여 각 치아들의 근심면과 원심면에서의 삭제의 양이 균등히 이루어질 수 있도록 하는 것이 바람직하다. 또한 치간에 공극이 존재하는 경우에는 배열 후 치열궁 둘레의 감소와 함께 상하악 전치부 간의 overjet 문제가 생길 수 있어 대합치열과의 교합관계에 신중을 기하여야 한다.

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Evaluating anchorage loss in upper incisors during distalization of maxillary posterior teeth using clear aligners in adult patients: A prospective randomized study

  • Zehra Yurdakul;Nurver Karsli
    • 대한치과교정학회지
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    • 제54권2호
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    • pp.117-127
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    • 2024
  • Objective: To evaluate the effect of clear aligner treatment and differential sequence distalization of maxillary posterior teeth on anchorage loss in the upper incisors (U1s). Methods: This study used lateral cephalometries and digital models of 12 patients treated with 33% sequential distalization (group 1, mean age: 22.9 ± 0.7 years, five males, seven females) and 12 treated with 50% sequential distalization (group 2, mean age: 25.83 ± 0.5 years, three males, nine females) acquired before and after distalization of upper second premolars (U5) and upper first molars (U6) and upper second molars (U7). The amount of distalization was determined as 2.5 mm in both the groups. Independent Samples t test was used to compare normally distributed parameters. Mann-Whitney U and Wilcoxon tests were used to compare parameters that were not normally distributed. Results: In both groups, the posterior teeth significantly moved by tipping distally and the U1s were displaced anteriorly. Increase in maxillary posterior transverse width (P < 0.001) and distopalatal rotation were observed in U5, U6, and U7 after distalization. It was also observed that U1 was significantly more proclined (1.82°; P < 0.001) and protruded (0.62 mm; P < 0.001), and the overjet (0.45 mm; P < 0.001) increased more in group 1 than in group 2. Conclusions: After sequential distalization of maxillary posterior teeth, more anchorage loss was observed in the anterior region in group 1 than in group 2.

Biomechanical analysis for different mandibular total distalization methods with clear aligners: A finite element study

  • Sewoong Oh;Youn-Kyung Choi;Sung-Hun Kim;Ching-Chang Ko;Ki Beom Kim;Yong-Il Kim
    • 대한치과교정학회지
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    • 제53권6호
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    • pp.420-430
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    • 2023
  • Objective: The purpose of this finite element method (FEM) study was to analyze the biomechanical differences and tooth displacement patterns according to the traction direction, methods, and sites for total distalization of the mandibular dentition using clear aligner treatment (CAT). Methods: A finite element analysis was performed on four FEM models using different traction methods (via a precision cut hook or button) and traction sites (mandibular canine or first premolar). A distalization force of 1.5 N was applied to the traction site by changing the direction from -30 to +30° to the occlusal plane. The initial tooth displacement and von Mises stress on the clear aligners were analyzed. Results: All CAT-based total distalization groups showed an overall trend of clockwise or counterclockwise rotation of the occlusal plane as the force direction varied. Mesiodistal tipping of individual teeth was more prominent than that of bodily movements. The initial displacement pattern of the mandibular teeth was more predominant based on the traction site than on the traction method. The elastic deformation of clear aligners is attributed to unintentional lingual tipping or extrusion of the mandibular anterior teeth. Conclusions: The initial tooth displacement can vary according to different distalization strategies for CAT-based total distalization. Discreet application and biomechanical understanding of traction sites and directions are necessary for appropriate mandibular total distalization.

전치의 심미치료를 위해 투명교정장치를 사용한 다각적 진료접근법 (An interdisciplinary approach to Esthetic anterior restorative treatment with clear aligner orthodontics)

  • 김도훈
    • 대한심미치과학회지
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    • 제32권2호
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    • pp.36-45
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    • 2023
  • 심미적인 전치부의 모습은 자연스럽고 건강한 미소를 위한 필수요건이며 대인관계의 자신감을 위해서도 중요한 요소이다. 전치부의 총생이=나 전돌이 존재하는 경우 단기간에 해결하기 위해 근관치료 및 과도한 치아삭제가 요구되는 경우가 많다. 하지만 이런 술식은 지속가능한 심미적 결과를 만들기 어렵다. 이런 경우 교정치료가 병행되어야만 수복이 필요한 치아들도 잔존 치질을 최대한 보존할 수 있을 것이다. 중장년층 환자들의 경우 교정 치료의 필요성을 절감하면서도 사회적 시선을 의식하여 브라켓을 이용한 전통적 방식의 교정치료 방법을 주저하는 경우가 많다. 이런 경우 투명교정장치는 좋은 선택지가 될 수 있다. 이에 투명교정만으로 심미적 요구를 해결한 증례와, 투명교정을 동반한 새로운 수복치료를 통해 만족스러운 결과를 얻은 다른 증례를 보고한다.

A comparative study of combined periodontal and orthodontic treatment with fixed appliances and clear aligners in patients with periodontitis

  • Han, Ji-Young
    • Journal of Periodontal and Implant Science
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    • 제45권6호
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    • pp.193-204
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    • 2015
  • Purpose: With the increasing prevalence of orthodontic treatment in adults, clear aligner treatments are becoming more popular. The aim of this study was to evaluate the effect of orthodontic treatment on periodontal tissue and to compare orthodontic treatment with fixed appliances (FA) to clear aligner treatment (CAT) in periodontitis patients. Methods: A total of 35 patients who underwent orthodontic treatment in the Department of Periodontology were included in this study. After periodontal treatment with meticulous oral hygiene education, patients underwent treatment with FA or CAT, and this study analyzed patient outcomes depending on the treatment strategy. Clinical parameters were assessed at baseline and after orthodontic treatment, and the duration of treatment was compared between these two groups. Results: The overall plaque index, the gingival index, and probing depth improved after orthodontic treatment (P<0.01). The overall bone level also improved (P=0.045). However, the bone level changes in the FA and CAT groups were not significantly different. Significant differences were found between the FA and CAT groups in probing depth, change in probing depth, and duration of treatment (P<0.05). However, no significant differences were found between the FA and CAT groups regarding the plaque index, changes in the plaque index, the gingival index, changes in the gingival index, or changes in the alveolar bone level. The percentage of females in the CAT group (88%) was significantly greater than in the FA group (37%) (P<0.01). Conclusions: After orthodontic treatment, clinical parameters were improved in the FA and CAT groups with meticulous oral hygiene education and plaque control. Regarding plaque index and gingival index, no significant differences were found between these two groups. We suggest that combined periodontal and orthodontic treatment can improve patients' periodontal health irrespective of orthodontic techniques.