• 대한치과의사협회지
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• 제36권11호통권354호
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• pp.794-799
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• 1998

Many references report that abnormal diastema except temporary diastema existing in mixed dentition period is caused by maxilary heavy labial frenum, malocclusion, progressive periodontal disease, and loss of posterior teeth. We can diagnose patient as diastema caused by periodontal disease, especially, in case of accompanying progressively destructed anterior maxillary alveolar bone defect, and interseptal bone defect. We report Multiple disciplinary approach for diastema associated with periodontal disease. Periodontal treatment(Guided Tissue -Regeneration, alveoloplasty, bone graft), or thodontic treatment (space closure, redistribution), and the final proshodontic restoration for retention were used.

• Journal of Periodontal and Implant Science
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• 제46권3호
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• pp.197-206
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• 2016

Purpose: The aim of this study was to evaluate alterations of papilla dimensions after orthodontic closure of the diastema between maxillary central incisors. Methods: Sixty patients who had a visible diastema between maxillary central incisors that had been closed by orthodontic approximation were selected for this study. Various papilla dimensions were assessed on clinical photographs and study models before the orthodontic treatment and at the follow-up examination after closure of the diastema. Influences of the variables assessed before orthodontic treatment on the alterations of papilla height (PH) and papilla base thickness (PBT) were evaluated by univariate regression analysis. To analyze potential influences of the 3-dimensional papilla dimensions before orthodontic treatment on the alterations of PH and PBT, a multiple regression model was formulated including the 3-dimensional papilla dimensions as predictor variables. Results: On average, PH decreased by 0.80 mm and PBT increased after orthodontic closure of the diastema (P<0.01). Univariate regression analysis revealed that the PH (P=0.002) and PBT (P=0.047) before orthodontic treatment influenced the alteration of PH. With respect to the alteration of PBT, the diastema width (P=0.045) and PBT (P=0.000) were found to be influential factors. PBT before the orthodontic treatment significantly influenced the alteration of PBT in the multiple regression model. Conclusions: PH decreased but PBT increased after orthodontic closure of the diastema. The papilla dimensions before orthodontic treatment influenced the alterations of PH and PBT after closure of the diastema. The PBT increased more when the diastema width before the orthodontic treatment was larger.

• 대한소아치과학회지
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• 제10권1호
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• pp.115-122
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• 1983

The author surveyed 2,082 schoolchildren (Male: 1,078, Female: 1,004) from 7 to 12 years old in "N" primary school in kwang Ju City, and studied on 304 schoolchildren (Male: 176, Female: 128) having maxillary median diastema. The results were as follows: 1. The prevalence of maxillary median diastema was 14.6%, and it showed the greater rate at the boys than at the girls and the highest rate at 8 years old in the both sexes. 2. The maxillary median diastema showed decreasing tendency with ageing. 3. The frenum distance in children without local factors showed no change and the divergent degree of maxillary median diastema showed decreasing tendency after the eruption of maxillary lateral incisors. 4. The rate of maxillary median diastema associated with local factors was 37.8% and it showed increasing tendency with ageing. 5. The prevalence of median diastema according to etiology was as follows; rotated tooth; 12.2%, supernumerary teeth; 10.9%, abnormal frenum; 9.5%, peg lateralis; 7.2%, open bite; 2.6%, abnormal pattern of interseptal alveolar bone; 2.6%, missing lateral incisor; 0.7%, tooth size discrepancy; 0.3%.

• BMB Reports
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• 제45권6호
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• pp.337-341
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• 2012

Different from humans, who have a continuous dentition of teeth, mice have only three molars and one incisor separated by a toothless region called the diastema in the hemi mandibular arch. Although tooth buds form in the embryonic diastema, they regress and do not develop into teeth. In this study, we evaluated the proteins that modulate the diastema formation through comparative analysis with molar-forming tissue by liquid chromatography-tandem mass spectroscopy (LC-MS/MS) proteome analysis. From the comparative and semi-quantitative proteome analysis, we identified 147 up- and 173 down-regulated proteins in the diastema compared to the molar forming proteins. Based on this proteome analysis, we selected and evaluated two candidate proteins, EMERIN and RAB7A, as diastema tissue specific markers. This study provides the first list of proteins that were detected in the mouse embryonic diastema region, which will be useful to understand the mechanisms of tooth development.

• 대한장애인치과학회지
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• 제11권1호
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• pp.1-4
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• 2015

본 증례는 뇌성마비가 있는 혼합치열기의 청소년에서 치간이개를 개선하는 다양한 방법을 모색해보았다. 그 중 복합레진을 이용한 보존적 치료는 이동에 어려움이 있는 뇌성마비 환아에서 최소한의 내원 횟수, 짧은 술식 시간, 경제적이며, 가역적이고 단순한 치료법이다. 이를 통해 높은 심미적 만족도와 발음 및 교합력 개선을 통해 본 환아의 삶을 질을 높일 수 있을 것으로 기대한다.

• 대한치과교정학회지
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• 제8권1호
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• pp.7-17
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• 1978

The purpose of this study was to investigate the interrelationship of the maxillary interincisal diastema, spacing and crowing to the type of superior labial frenum and the type of intermaxillary suture by analyzing histories, intraoral radiographs, orthopantomographs, intraoral slide films, and dental casts. The data for this study were compiled from 500 outpatients of the Department of Orthodontics, Infirmary of Dental College, Seoul National University. The following conculusions were obtained: 1. The occurrence of maxillary interincisal diastema in the permanent dentition decreased rapidly compared with that in the mixed dentition. And there was no sex difference in the occurrence of diastema in the both dentitions. 2. Frenum attachment remained relatively constant between the two dentitions but assumed a higher level in the permanent dentition than in the mixed dentition. 3. Except suture type D which was not yet fused completely, there was no significant difference in the distribution of suture type between the mixed dentition and the permanent dentition. 4. Frenum and suture type were highly related; frenum types 5 and 6 were associated with suture types III and V. 5. In the permanent dentition, frenum type 5 and 6 and suture types III and IV occurred more frequently in the spacing group than in the normal or crowding group. 6. The relationship between the diastema and frenum types 5 and 6 and sture types III and IV showed a strong correlation.

• 대한심미치과학회지
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• 제32권2호
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• pp.69-75
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• 2023

다이아스테마는 기능적인 문제가 없는 경우가 대부분이지만, 심미적인 문제까지 없는 것은 아니다. 많은 환자들에게 diastema는 심각한 심미적 결함으로 받아들여지고 있다. 이를 위한 치료로는 전통적으로 교정과 보철치료가 대세였지만, 최근은 컴포짓 레진을 이용한 치료에 대한 요구가 증가되고 있다. 비교적 시야가 좋고 접근이 쉬운 전치부이지만, 많은 술자들이 레진을 이용한 치료를 선호하지 않는다. 그 이유로는, 생각보다 까다롭고, 시간이 많이 소요되는 치료이기 때문이다. 본 글에서는 다이아스테마를 해결하기 위한 4가지 테크닉을 살펴보고 장단점에 대해서 고찰해보려고 한다.

• 대한치과의사협회지
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• 제22권8호통권183호
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• pp.699-703
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• 1984

The author surveyed on the maxillary median diastema of 1,522 (male: 805, female:717) 'H' and 'K' primary school children aged from 6 to 13. The results were as follows: 1. The prevalence of the maxillary median diastema was 11.6% in male, 7.5% in female and 9.7% in both sexes. 2. The prevalence of the maxillary median diastema showed the highest rate in 8 years old boys and girls, and it showed decreasing tendency according to increasing ago. 3. The prevalence of mesiodens was 0.4%, and boys had higher rate than girls. 4. Mean value of 'Frenum Distance' was 5.7mm in male, 5.5mm in female and mean value of 'Divergent Degree' was 2.0mm in male, 1.6mm in female.

• 대한치과의사협회지
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• 제21권10호통권173호
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• pp.829-833
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• 1983

The author surveyed on the maxillary median diastema of 1,686(male; 850, female; 836) 'H' and 'K' primary school children aged from 6 to 13. The results were as follows : 1. The prevalence of the maxillay median diastema was 12.6% in male, 7.9% in female and 10.3% in both sexes. 2. The prevalence of the maxillary median diastema showed the highest rate in 9 years old boys and 8 years old girls, and it showed decreasing tendency according to increasing age. 3. The prevalence of mesiodens was 0.6% and boys had higher rate than girls. 4. Mean value of 'Frenum Distance' was 5.8mm in male, 5.7mm in female and mean value of 'Divergent Degree' was 2.0mm in male, 1.6mm in female.

• 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.