• Title/Summary/Keyword: tooth, impacted

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AUTOTRANSPLANTATION OF AN IMPACTED MAXILLARY PREMOLAR USING ENAMEL MATRIX DERIVATIVE: A CASE REPORT (역위 매복된 상악 소구치의 Enamel matrix derivative를 이용한 자가이식 치험례)

  • Oh, You-Hyang;Lee, Nan-Young;Lee, Chang-Seop;Lee, Sang-Ho
    • Journal of the korean academy of Pediatric Dentistry
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    • v.30 no.3
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    • pp.471-476
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    • 2003
  • The success of autotransplantation depends on the viability of periodontal ligament in the transplanted tooth. Mechanical injury to periodontal tissues frequently results in dental root resorption and ankylosis, which leads to the failure of transplantation. Enamel matrix derivative(EMD) Which contains several enamel matrix protein (amelogenin family) has been reported to be effective in some periodontal therapies has been recently used to induce periodontal regeneration. EMD promotes proliferation of periodontal ligament cells and is suggested to be useful for transplantation. In this case, we report a clinical case of EMD application in the transplantation of an impacted and immature tooth of a 14 year-old girl to enhance the periodontal regeneration.

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CASE OF DENTIGEROUS CYSTS TREATED BY MARSUPIALIZATION (조대술을 이용한 함치성 낭종의 치료)

  • Park, Sung-Jin;Lee, Kwang-Hee;Kim, Dae-Eop
    • Journal of the korean academy of Pediatric Dentistry
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    • v.30 no.3
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    • pp.459-464
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    • 2003
  • Dentigerous cyst is a cyst arising by tissue fluid accumulation between the enamel and the residual enamel epithelium. It includes the crown of the impacted tooth and excludes the root. The treatments of the dentigerous cyst are enucleation, marsupialization, decompression, surgical excision and etc. In these cases children were evaluated for the chief complaints of the remained mandibular primary second molar. Each cases showed swelling on the buccal side of the primary secondary premolar. In the radiologic evaluation a radiolucent lesion including the crown of the mandibular secondary premolar was found, and it was diagnosed as dentigerous cyst. And the histopathologic examination showed the same result. Marsupialization was operated through alveolar socket and the alveolar socket was protected with vaseline gauze, the obturator combined with space maintainer was followed by the operation. After the operation, the impacted permanent tooth was showing faster eruption speed than the other normal teeth.

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Double versus single cartridge of 4% articaine infiltration into the retro-molar area for lower third molar surgery

  • Sawang, Kamonpun;Chaiyasamut, Teeranut;Kiattavornchareon, Sirichai;Pairuchvej, Verasak;Bhattarai, Bishwa Prakash;Wongsirichat, Natthamet
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.17 no.2
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    • pp.121-127
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    • 2017
  • Background: There are no studies regarding 4% articaine infiltration injection into the retro-molar area for an impacted lower third molar (LITM) surgery. This study aimed to evaluate the efficacy of infiltration using 1.7 ml (single cartridge: SC) of 4% articaine versus 3.4 ml (double cartridges: DC) of 4% articaine with 1:100,000 epinephrine in LITM surgery. Method: This study involved 30 healthy patients with symmetrical LITM. The patients were assigned to receive either a DC or SC of 4% articaine with 1:100,000 epinephrine as a local anesthetic for each operation. Onset, duration, profoundness, need for additional anesthetic administration, total volume of anesthetic used, vitality of the tooth, and pain score during operation were recorded. Results: The DC of 4 % articaine had a significantly higher success rate (83.3%) than did the SC (53.3%; P<0.05). The duration of soft tissue anesthesia was longer in the DC group. The intra-operative pain was higher in the SC group with a significant (P < 0.05) requirement for a supplementary local anesthetic. Conclusion: We concluded that using DC for the infiltration injection had a higher success rate, longer duration of anesthesia, less intra-operative pain, and a lower amount of additional anesthesia than SC in the surgical removal of LITM. We recommend that a DC of 4% articaine and a 1:100,000 epinephrine infiltration in the retro-molar region can be an alternative anesthetic for LITM surgery.

BILATERAL SUPERNUMERARY TEETH IN THE MANDIBULAR INCISOR REGION; A CASE REPORT (하악 전치부에 발생한 과잉치)

  • Kim, Sung-Hee;Park, Jong-Ha;Yang, Yeon-Mi;Baik, Byeong-Ju;Kim, Jae-Gon
    • Journal of the korean academy of Pediatric Dentistry
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    • v.31 no.1
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    • pp.52-58
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    • 2004
  • Supernumerary tooth describes an excess of tooth number, which are found in primary dentition with 0.3-0.8%, permanent dentition with 1.0-3.5% prevalence. Their frequency is about 2:1 (male vs female) and 9:1 (maxilla vs mandible). However, occurrence is very rare in the incisor region of the mandible. We need a early diagnosis and appropriate treatment plan because of possibility of diastema, eruption failure, displacement, rotation of the associated permanent teeth, root resorption, dentigerous cyst with presence of the supernumerary teeth. This is a case report about two impacted supernumerary teeth found in madibular anterior region of 6 years old girl. One was extracted and another was retained because of fusion with permanent central incisor on the labial surface.

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TREATMENT OF ODONTOGENIC CYST USING DECOMPRESSION (감압술을 이용한 치성 낭종의 치료)

  • Choi, Byung-Jai;Suh, Moon-Sun;Kim, Seong-Oh;Son, Heung-Kyu
    • Journal of the korean academy of Pediatric Dentistry
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    • v.29 no.3
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    • pp.418-422
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    • 2002
  • Cyst is a cavity filled with fluids and semi-fluids that is lined with epithelial cells. Odontogenic cysts are those that form within the jaw which origin from dental follicles, enamel epithelium remnants of the crown, Malassez epithelial cell rest and basal cell layer of the oral epithelium. In such cases, treatment methods such as enucleation, marsupialization, decompression, surgical excision etc. can be used according to the lesion's characteristics, size, relationship with the surrounding tissue, patient's age and developmental status. This case was to report an odontogenic cyst caused by an impacted immature permannent tooth and its treatment. The cyst was removed by decompression. Cystic cavity was healed with bone tissue and the impacted permanent tooth erupted without any recurred cystic lesion.

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Cantilever-Type Traction Appliance for Mandibular First Permanent Molars with Eruption Disturbances (하악 제1대구치 맹출 장애에서 Cantilever-Type의 견인 장치를 활용한 맹출 유도)

  • Lim, Heejung;Lee, Eungyung;Jeong, Taesung;Shin, Jonghyun
    • Journal of the korean academy of Pediatric Dentistry
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    • v.48 no.2
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    • pp.229-236
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    • 2021
  • Eruption disturbances of the mandibular first molars can cause multiple problems in occlusal development although they are extremely rare. Early diagnosis and treatment are very important to prevent complications associated with eruption disturbances. The present case report describes the treatment of two cases of eruption disturbances of the mandibular first permanent molar. A fixed appliance composed of a cantilever spring with mandibular second deciduous molar as an anchor tooth was used to tract the impacted mandibular first permanent molar. The success of both cases shows that this novel traction appliance can be used to induce the eruption of an impacted mandibular first permanent molar within a short time in patients with intact mandibular second deciduous molar as an anchor tooth.

Alveolar Cleft Reconstruction Using Chin Bone and Autogenous Tooth Bone Graft Material: Reports of 5 Cases

  • Jeong, Kyung-In;Lee, Junho;Kim, Kyung-Wook;Um, In-Woong;Hara, Shingo;Mitsugi, Masaharu;Kim, Young-Kyun
    • Journal of Korean Dental Science
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    • v.6 no.1
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    • pp.13-21
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    • 2013
  • Purpose: To report the successful results of using chin bone graft and autogenous tooth bone graft material (AutoBT) in alveolar cleft patients. Materials and Methods: Five patients with alveolar cleft defects underwent alveolar bone grafting. Three patients were treated using chin bone graft, and the other two patients underwent AutoBT graft. After implant site development using chin bone graft in the fi rst three cases, endosseous implant restorations were placed. In case #4 and 5, AutoBT graft material was placed to guide the normal eruption of partially impacted maxillary right canine and to the upper docking site after distraction osteogenesis. Result: Successful implant restorations with closure of the oronasal fistula were achieved in alveolar cleft defect reconstruction using either chin bone graft (Case #1, 2, 3) or AutoBT graft material (Case #4, 5). Case #4 showed enlarged follicle of the right maxillary canine, indicating a normal eruption guide pattern. Conclusion: Both chin bone graft and AutoBT graft showed favorable outcomes in reconstructing alveolar cleft defects. Autogenous tooth bone graft opens up the possibility of avoiding harvesting autogenous bone graft with complications and morbidities.

UNERUPTED PRIMARY MOLARS (미맹출 유구치의 치험례)

  • Kang, Sun-Hee;Yang, Young-Sook;Lee, Kwang-Hee
    • Journal of the korean academy of Pediatric Dentistry
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    • v.32 no.2
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    • pp.217-223
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    • 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.

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Characterization of Odontoblasts in Supernumerary Tooth-derived Dental Pulp Stem Cells between Passages by Real-Time PCR (과잉치 치수유래 줄기세포의 Real-time PCR에 의한 계대간 상아질모세포 발현 특성)

  • Ji, Sangeun;Song, Sol;Lee, Joonhaeng;Kim, Jongbin;Kim, Jongsoo
    • Journal of the korean academy of Pediatric Dentistry
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    • v.48 no.3
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    • pp.291-301
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    • 2021
  • The aim of this study is to compare the properties of odontoblast gene of early passage cells and late passage cells derived from impacted maxillary supernumerary teeth. Impacted supernumerary teeth with maxilla were extracted from 12 patients (8 males, 4 females) between 6 - 9 years old without medical history. Real-time polymerase chain reaction (PCR) was conducted to compare characterization of odontoblast cell in the 3rd and 10th passage, and between with bone inducing additive group and without additive group. Genes for odontoblasts characteristics are osteonectin (ONT), alkaline phosphatase (ALP), osteocalcin (OCN), dentin matrix protein 1 (DMP-1) and dentin sialophosphoprotein (DSPP). The level of gene expression was in a decreasing order of ONT, ALP, OCN, DMP-1 and DSPP in the 3rd passage, and in decreasing order of ONT, DMP-1, OCN, ALP, and DSPP in the 10th passage in the undifferentiation and differentiation group. The order of ONT, DMP-1, and OCN did not changed. ALP and DMP-1 were switched in order. ALP and DMP-1 may be used as important markers for differentiating between the 3rd passage and 10th passage cells. Considering that supernumerary tooth was extracted young age and the time required to cultured 10th passage was short, supernumerary tooth can be considered a useful donor site of dental pulp stem cells.

EVALUATION OF OSTEOGENIC ACTIVITY AND MINERALIZATION OF CULTURED HUMAN DENTAL PAPILLA-DERIVED CELLS (배양된 치유두 유래세포의 조골활성 및 골기질 형성의 평가)

  • Park, Bong-Wook;Byun, June-Ho;Choi, Mun-Jeoung;Hah, Young-Sool;Kim, Deok-Ryong;Cho, Yeong-Cheol;Sung, Iel-Yong;Kim, Jong-Ryoul
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.29 no.4
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    • pp.279-288
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    • 2007
  • In the present study, we focused on stem cells in the dental papilla of the tooth germ. The tooth germ, sometimes called the tooth bud, is the primordial structure from which a tooth is formed. The tooth germ consists of the enamel organ, the dental papilla, and the dental follicle. The dental papilla lies below a cellular aggregation of the enamel organ. Mesenchymal cells within the dental papilla are responsible for formation of dentin and pulp of a tooth. Tooth germ disappears as a tooth is formed, but that of a third molar stays in the jawbone of a human until the age of 10 to 16, because third molars grow slowly. Impacted third molar tooth germs from young adults are sometimes extracted for orthodontic treatment. In the present study, we evaluated the osteogenic activity and mineralization of cultured human dental papilla-derived cells. Dental papillas were harvested from mandible during surgical extraction of lower impacted third molar from 3 patients aged 13-15 years. After passage 3, the dental papilla-derived cells were trypsinized and subsequently suspended in the osteogenic induction DMEM medium supplemented with 10% fetal bovine serum, 50 g/ml L-ascorbic acid 2-phosphate, 10 nM dexamethasone and 10 mM -glycerophosphate at a density of $1\;{\times}10^6\;cells/dish$ in a 100-mm culture dish. The dental papilla-derived cells were then cultured for 6 weeks and the medium was changes every 3 days during the incubation period. Dental papilla-derived cells showed positive alkaline phosphatase (ALP) staining during 42 days of culture period. The formation of ALP stain showed its maximal manifestation at day 7 of culture period, then decreased in intensity during the culture period. ALP mRNA level was largely elevated at 1 weeks and gradually decreased with culture time. Osteocalcin mRNA expression appeared at day 14 in culture, after that its expression continuously increased in a time-dependent manner up to day 28. The expression remained constant thereafter. Runx2 expression appeared at day 7 with no detection thereafter. Von Kossa-positive mineralization nodules were first present at day 14 in culture followed by an increased number of positive nodules during the entire duration of the culture period. Osteocalcin secretion was detectable in the culture medium from 1 week. The secretion of osteocalcin from dental papilla-derived cells into the medium greatly increased after 3 weeks although it showed a shallow increase by then. In conclusion, our study showed that cultured human dental papilla-derived cells differentiated into active osteoblastic cells that were involved in synthesis of bone matrix and the subsequent mineralization of the matrix.