• The Journal of the Korean dental association
• /
• v.38 no.10 s.377
• /
• pp.962-968
• /
• 2000

치조골과 백악질이 치근막에 의하여 경계되어지지 않고 직접 접촉된 상태인 골유착치는 치조골성장장애, 불안전 맹출, 대합치의 정출, 인접치와의 불안정한 관계 등 다양한 문제를 야기한다. 골유착치의 진단은 방사선 사진에서 치근막의 소실, 타진시의 독특한 소리, periotest를 이용한 동요도 검사 등 다양한 방법이 사용되나 그 신뢰성은 높지 않은 편이다. 따라서 저자는 통산적인 방법은 견인을 시행한 후 견인여부를 평가하여 골유착 여부를 판단하는 임상적 진단법을 사용하고 있다. 골유착치의 치료는 subluxation & extrusion법, autotransplantation법, corticotomy법, segmental osteotomy법, ostectomy법등 다양한 방법이 제시되고 있다. Subluxation & extrusion법은 적용이 간편한 장점이 있으나 골유착의 재발로 인한 교정치료의 실패가능성이 높은 단점이 있다. 본 증례는 다수치의 부분맹출 및 골유착으로 인한 구치부 개방교합이 주소인 환자로 소구치는 통산적인 교정치료법으로 골유착된 대구치는 subluxation & extrusion법을 적용하여 양호한 치료 결과를 얻을 수 있었다.

• Journal of Dental Rehabilitation and Applied Science
• /
• v.33 no.2
• /
• pp.143-153
• /
• 2017

One of the common complications of dental injury is tooth ankylosis. Unlike adults, when tooth ankylosis occurs in the adolescents, ankylosis interfered the growth of the adjacent alveolar bone, resulting in the developmental failure of the alveolar bone and subsequent open bite. The most common treatment option for ankylosed tooth is extraction. However, when prognosis of ankylosed tooth after extraction is expected to be poor due to severity of infrapositioning or prosthetic replacement cannot be performed immediately, various treatment options should be considered. This report suggests multidisciplinary treatment that might bring functionally and esthetically favorable result included alveolar bone distraction osteogenesis and decoronation of ankylosed maxillary anterior tooth with orthodontic and prosthetic treatments.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.38 no.4
• /
• pp.391-398
• /
• 2011

The infraocclusion usually occurs in the mixed-dentition stage, and it is commonly accepted that the cause of the infraocclusion is ankylosis. The treatment options for patient with infraocclusion of primary molars are observation, restoration or surgical removal of the affected teeth. If the successors are present, most of the infraoccluded and ankylosed primary molars may occur normally. However, when the permanent successors are absent and the progression of infraocclusion is found, affected teeth may need to be extracted. In the case of infraocclusion which can cause vertical alveolar defect due to ankylosis, extraction before growth spurt should be performed for the future prosthetic treatment. A six-year-old female had the ankylosis and infraocclusion of multiple primary molars and congenital missing of premolars. The affected primary molars were extracted before growth spurt to avoid a significant vertical ridge defect and to promote the vertical development of alveolar bone, and the result was observed for many years. The purpose of this report is to report the management of multiple infraoccluded primary molars without permanent successors in a young patient.

• The korean journal of orthodontics
• /
• v.39 no.3
• /
• pp.185-198
• /
• 2009

Tooth anklylosis is defined as the adhesion state of alveolar bone to dentin or cementum. Trauma, disturbed metabolic disease, and congenital disease have been given as etiologic factors. Complications of tooth ankylosis are tipping of the neighboring teeth, space loss, and supraeruption of the opposing teeth. Particularly if dental ankylosis occurs in maxillary incisors of a growing child, the ankylosed tooth can not move vertically with subsequent disturbance in vertical growth of the alveolar process. With an appropriate treatment approach, an esthetic condition must be achieved especially in the maxillary anterior region. In this report, two cases are presented which were treated by the surgical repositioning method. One is treated by alveolar bone distraction osteogenesis which used a tooth-borne type distraction device and the other by single tooth osteotomy.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.32 no.3
• /
• pp.403-408
• /
• 2005

Ankylosis is defined as a fusion of cementum or dentine with alveolar bone. Due to the loss of the periodontal ligament on the ankylotic area, the tooth is incapable of continued eruption and hence is unable to follow the normal vertical development of the neighboring teeth and alveolar process. A 6-year-old female was referred to the Dept. of Pediatric Dentistry for ankylosis of primary molars and congenital missing of permanent premolars on both jaws. She had neither specific past medical history nor trauma and infection history in oral and maxillofacial region. Radiographic finding is that the maxillary primary molars were the early onset of ankylosis and had fast root resorption rate. However the mandibular primary molars were ankylosed later and being resorbed slower than maxillary primary molars. The object of treating this case is to maintain the proper alveolar bone growth and retention of deciduous molars. The point of managing this case is as follows: Proper treatment (observation, restoration, or extraction) should be established after thorough consideration of the time of onset, the root resorption rate, progression of infraocclusion and the development of alveolar bone support. We should consider the timing of extraction of the ankylosed teeth without problem of neighbouring alveolar bone growth and tilting of adjacent teeth in the view of growth spurt. Early diagnosis is important to avoid many of the complications with infraoccluded primary molars.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.44 no.1
• /
• pp.99-107
• /
• 2017

In the management of ankylosed primary molars, early diagnosis, proper treatment, and thorough follow-ups are very important. Untreated infraocclusion due to ankylosis has a negative impact on normal occlusal development, and may cause problems. There are many treatment options on infraoccluded deciduous molars, such as periodic observation, conservative method, restoration, and space regaining via extraction of the teeth. In this case report, two 6-year-old girls were diagnosed with ankylosed maxillary second primary molar and displaced tooth germ of the second premolar. Early surgical removal of the ankylosed primary molar was considered as a treatment approach. The long-term follow-up shows normal eruption of a succeeded permanent premolar.

• The Journal of the Korean dental association
• /
• v.28 no.9 s.256
• /
• pp.736-737
• /
• 1990

• Journal of the korean academy of Pediatric Dentistry
• /
• v.32 no.2
• /
• pp.217-223
• /
• 2005

The term 'impaction teeth' is used to designate a tooth which remains unerupted in jaw beyond the time at which it should normally be erupted. Most cases of impacted teeth reported in the literature are permanent teeth. The impaction of primary teeth occur rarely whereas impaction of second primary molars is more numerous than all other impactions. Failure of eruption of primary teeth may cause a number of complications, such as interference with development and eruption of successive permanent teeth, malocclusion, cystic change of tooth follicle. The clinican should consider the various treatment option available (a) No treatment and observation, (b) surgical extraction (c) space regainer. Proper treatment plan should be established after thought consideration of impacted tooth and it's relation with successive permanent tooth.

• Journal of Veterinary Clinics
• /
• v.17 no.2
• /
• pp.368-375
• /
• 2000

개의 개흉술이나 개심술 후에 주요 합병증인 유착에 대한 sodium carboxymethyl- cellulose (SCMC)의 효과를 평가하기 위하여 1% SCMC총액을 흉막 및 심낭에 적용하였다. 10두의 개를 SCMC투여 군과 생리식염수 투여 군으로 각각 5두씩 배치하고, 개흉 후 4번째 메서 7번째 늑골의 늑연골 연접부 부위에 찰과상을 유도하였고 심낭 절개 후 심낭의 내측 및 닿는 심근에 각각 $2{\times}2cm$크기로 찰과상을 유발하였다. 찰과상 유발 후 생리식염수 투여 군은 멸균 생리식염수를 3.5m1/kg을, SCMC투여 군은 같은 용량의 1% SCMC를 흉강 및 심낭 내에 각각 도포 하였다. 수술 전후에 CBC와 혈장 plasminogen치를 측정하였다. 유착 정도 는 수술 30일 후에 0-4로 점수화하여 판정하였다 십장과 심낭의 평균 유착치는 SCMC투여 군이 2.4$\pm$0.8, 생리식염수 투여군이 $3.7{\pm}0.9$로 나타나 SCMC 투여군에서 유착 발생이 유의 성 있게 낮았다(p<0.01). 폐염과 흉막간의 평균 유착치는 SCMC 투여군이 1.7$\pm$0.2이었고, saline 투여군은 $3.5{\pm}0.8$로. SCHC투여 군에서 유착 발생이 유의성 있게 낮았다(p<0.01). Saline 투여군의 혈중 plasminogen 농도는 술 후 1일에 $28.2{\pm}5.677$로 감소하였고,술 후 7일에 $47{\pm}1.4%$.증가하였다(p<0.05). SCMC 투여군에서는 실험적 수술 1일 후 $27.1{\pm}10.3$로 감소하였고 7일 후에는 $30.3{\pm}21.6%$로 증가(p<0.01)하였으나 두 군간의 유의적인 차이는 없었다 이 상의 결과로 볼 때 개흉술 및 개심술시 1% SCMC를 투여하여 흉강 내의 유착을 방지함으로써 재수술이 필요한 경우에 수술의 어려움과 조직손상의 위험을 감소시킬 것으로 사료된다.로 사료된다.

• The Journal of the Korean dental association
• /
• v.43 no.12 s.439
• /
• pp.838-849
• /
• 2005