• Title/Summary/Keyword: school of dentistry

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A morphometric study on stainless steel crowns of the primary first molar using a three dimensional scanner

  • Lee, Jihyun;Shin, Teo Jeon;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg;Lee, Sang-Hoon;Kim, Chong-Chul;Hyun, Hong-Keun
    • The Journal of the Korean dental association
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    • v.54 no.6
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    • pp.414-428
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    • 2016
  • Objectives: The aim of this study was to assess the morphologic characteristics of two types of stainless steel crowns (SSCs) for the first primary molar using a 3D scanner. Study design: Two types of SSCs, KIDS CROWN (KC) and 3M ESPE ND-96 (ND), for the first primary molars were scanned using a 3D scanner. The mesiodistal and buccolingual diameters at the height of the contour and the cervical margin, occlusocervical diameters on the mesial, distal, buccal, and lingual aspects were measured, and the crown shape ratio, the smooth surface crown height ratio, and the cervical convergence were calculated. Results: In the crown shape ratio of the mandibular SSC, KC was larger buccolingually compared with ND. In the smooth surface crown height ratio, ND was larger than KC in all of the maxilla and mesial, distal, and lingual aspects of the mandible. ND was more convergent to the cervical mesiodistally and buccolingually compared with KC. Conclusion: In the superimposed images of the maxillary SSC, the mesiolingual and distolingual line angles of KC were more prominent compared with ND. In the mandible, ND demonstrated higher cusps and more obvious buccal developmental lobes than KC. ND showed a larger cervical undercut than KC.

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Washout resistance of fast-setting pozzolan cement under various root canal irrigants

  • Jang, Ga-Yeon;Park, Su-Jung;Heo, Seok-Mo;Yu, Mi-Kyung;Lee, Kwang-Won;Min, Kyung-San
    • Restorative Dentistry and Endodontics
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    • v.38 no.4
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    • pp.248-252
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    • 2013
  • Objectives: Fast-setting pozzolan cement (Endocem, Maruchi) was recently developed. The aim of this study was to investigate the effects of various root canal irrigants on the washout of Endocem in comparison to the previously marketed mineral trioxide aggregate (ProRoot; Dentsply) in a furcal perforation model. Materials and Methods: ProRoot and Endocem were placed into acrylic molds on moist Oasis. Each mold was then immediately exposed to either physiologic saline, 2.5% sodium hypochlorite (NaOCl), or 2% chlorhexidine (CHX) under gentle shaking for five minutes. Washout testing was performed by scoring scanning electron microscope (SEM) images. Results: Endocem exhibited higher washout resistance compared to ProRoot, especially in the NaOCl group. Conclusions: These results suggest that Endocem can be considered a useful repair material for furcal perforation, especially in a single-visit scenario.

DENTAL TREATMENT OF A 11-YEAR-OLD MALE PATIENT WITH ADRENOLEUKODYSTROPHY UNDER GENERAL ANESTHESIA : A CASE REPORT (부신백질이영양증 환자의 전신마취 하 치과 치료 : 증례보고)

  • Jang, Jun-Hyuk;Shin, Teo-Jeon;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg;Lee, Sang-Hoon;Kim, Chong-Chul;Hyun, Hong-Keun
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.9 no.2
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    • pp.107-110
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    • 2013
  • Adrenoleukodystrophy (ALD) is a rare, inherited disorder that leads to progressive brain damage and failure of the adrenal glands. It is passed down from parents to their children as an X-linked genetic trait. Therefore, it affects primarily males especially under the age of 10. People with ALD have excessive accumulation of very long chain fatty acids (VLCFAs) in their brain because they do not have the enzyme which break down these fatty acids. Special method for treatment of ALD is not available. Eating a diet low in VLCFAs and taking special oils, called Lorenzo's oil, can lower the blood levels of VLCFAs. But this oil cannot stop the destruction of nerve cell. This article presents a case report: Dental treatment of a 11-year-old male patient with ALD under general anesthesia. Careful management must be required during treatment procedure because of difficulty in cooperation, seizure disorders, gastroesophageal reflux, pulmonary aspiration and airway complications.

TREATMENT OF AN IMMATURE, TRAUMATIZED PERMANENT TOOTH OF A PATIENT WITH CEREBRAL PALSY : A CASE REPORT (뇌병변 환아에서 외상성 손상을 받은 미성숙 영구치의 치험례)

  • Heo, Seon-Jae;Shin, Teo Jeon;Hyun, Hong-Keun;Kim, Jung-Wook;Jang, Ki-Taeg;Lee, Sang-Hoon;Kim, Chong-Chul;Kim, Young-Jae
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.12 no.2
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    • pp.72-76
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    • 2016
  • Traumatic dental injury (TDI) is a common problem in children and adolescent. The prevalence of dental trauma among children with disability as compared to healthy children. The TDI of an immature permanent tooth can lead to the loss of pulp vitality and arrested root development. Traditionally, the treatment of choice for necrotic immature tooth is apexification, which is induction of hard tissue barrier at the apex to produce more favorable conditions for conventional root canal filling. This case report describes the treatment of a necrotic immature permanent central incisor with complicated crown fracture. The patient had multiple disabilities (cerebral palsy, congenital heart disease, developmental delay, and gait disturbance) and suffered from She was suffered from repetitive traumatic injury. Apexification and resin restoration was performed under general anesthesia, and favorable clinical results were achieved.

Dental Treatment of a 3-Year-Old Male Patient with Haddad Syndrome under Outpatient General Anesthesia (Haddad 증후군 환아의 외래 전신마취 하 치과 치료)

  • Jang, Jun-Hyuk;Shin, Teo-Jeon;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg;Lee, Sang-Hoon;Kim, Chong-Chul;Hyun, Hong-Keun
    • Journal of The Korean Dental Society of Anesthesiology
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    • v.13 no.4
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    • pp.215-220
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    • 2013
  • The co-occurrence of congenital central hypoventilation syndrome (CCHS) and Hirschsprung's disease (HD) is termed Haddad syndrome, which is an extremely rare discorder. It was reported first by Haddad in 1978 and there are approximately 60 cases reported in the worldwide literature. Recent studies described that congenital central hypoventilation syndrome had deep relation to the mutation of the PHOX2B gene in its diagnosis and phenotype. This article presents a case report: Dental treatment of a 3-year-old male patient with Haddad syndrome under outpatient general anesthesia. The special considerations of dental care, especially caries theatment of the patient with Haddad syndrome are discussed.

Study on $Carisolv^{TM}$ from View Point of Free Radical.

  • Tsujimoto, Y.;Gomi, H.;Tsukada, N.;Hirayama, S.;Ikemi, T.;Yamazaki, M.
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.568.2-568
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    • 2001
  • $Carisolv^{TM}$ system was developed for removal of carious dentin with chemo-mechanical method by Swedish researcher. $Carisolv^{TM}$ is composed of 0.5% NaClO and three kinds of amino acid, i.e. glutamic acid, leucine and lysin. After these agents are mixed together, the gel mixed is applied to carious dentin and the carious dentin is removed with hand instrument without using burs. The mechanism of softening the dentin is postulated that the degenerated collagen by caries is chlorinated and the decomposed. But the details of the mechanism are not clarified yet.(omitted)

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DENTAL TREATMENT OF A PATIENT WITH HADDAD SYNDROME UNDER GENERAL ANESTHESIA: CASE REPORT (Haddad syndrome 환아의 전신마취 하 치아우식 치료: 증례보고)

  • Suh, Heewon;Song, Ji-Soo;Shin, Teo Jeon;Hyun, Hong-Keun;Kim, Young-Jae;Kim, Jung-Wook;Lee, Sang-Hoon;Jang, Ki-Taeg
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.13 no.1
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    • pp.47-51
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    • 2017
  • Haddad syndrome, the association of Congenital Central Hypoventilation Syndrome (CCHS) and Hirschsprung's disease (HD), is a disease caused by mutation of PHOX2B gene. This disease, which occurs very rarely worldwide, is characterized by adequate ventilation during wakefulness and hypoventilation during sleep due to decreased ventilatory sensitivity. In this case report, we report a case of dental treatment under general anesthesia in a child with Haddad syndrome. A 3-year-old child with Haddad syndrome visited Seoul National University Dental Hospital for dental treatment. Dental treatment was planned under general anesthesia because of his medical condition. Treatment was successfully done without any postoperative complications. This case suggests that general anesthesia may be advantageous for dental treatment due to the risk of respiratory depression in a child with Haddad syndrome.

DENTAL CARIES TREATMENT OF A PATIENT WITH BECKWITH-WIEDEMANN SYNDROME : A CASE REPORT (Beckwith-Wiedemann syndrome 환아의 치아우식 치료 : 증례보고)

  • Heo, Seon-Jae;Shin, Teo Jeon;Hyun, Hong-Keun;Kim, Jung-Wook;Jang, Ki-Taeg;Lee, Sang-Hoon;Kim, Chong-Chul;Kim, Young-Jae
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.12 no.2
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    • pp.92-95
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    • 2016
  • Beckwith-Wiedemann syndrome comprises multiple congenital anomalies with a risk of development of childhood tumors. Macroglossia is the predominent finding in Beckwith-Wiedemann syndrome and other findings include postnatal somatic gigantism, abdominal wall defects, nevus flammeus of the face, congenital heart defects, and cleft palate. The aim of this case presentation is to describe the dental treatment of a child with Beckwith-Wiedemann syndrome. A 3-year-old boy with Beckwith-Wiedemann syndrome visited to the Seoul National University Dental Hospital for dental evaluation and treatment. Due to the multiple caries and poor cooperation, we planned to perform the dental procedure under general anesthesia. The dental procedure was successfully performed and there was no airway complications after extubation. This case suggests that general anesthesia may be useful for the patient with uncooperative Beckwith-Wiedemann syndrome, since macroglossia and laryngomalacia may exacerbates airway compromise during dental sedation.

General Anesthesia for Dental Treatment in the Child with Aplastic Anemia (재생불량성 빈혈 환아의 전신마취 하 치과치료)

  • Lee, Mi-Yeon;Shin, Teo-Jeon;Hyun, Hong-Keun;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taek;Kim, Chong-Chul;Lee, Sang-Hoon
    • Journal of The Korean Dental Society of Anesthesiology
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    • v.13 no.4
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    • pp.203-207
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    • 2013
  • Aplastic anemia (AA) is a serious hematologic disease characterized by hypocellular bone marrow and deficient production of erythrocytes, granulocytes and platelets. Serious complications such as uncontrolled bleeding and bacteremia can occur. A case of severe AA are presented with dental considerations. A 4-year-old boy had been referred from Seoul National University Hospital for dental examination before the hematopoietic stem cell transplantation (HSCT). Treatments were planned under general anesthesia, due to the poor compliance. Following medical consult, dental treatments were performed after platelet transfusion and antibiotic prophylaxis. Postoperatively, neither significant bleeding nor complictation was observed. On the time of the treatment planning. the anesthesiologist and dentist should perform a complete hematological assessment. It is imperative not only platelet counts but also other leukocyte counts are under safe boundaries. It is mandatory to follow strict aseptic precautios for all anesthetic and surgical maneuvers. In severe thrombocytopenic patients, platelet transfusion should be considered. Also, it is recommended to establish a good oral hygiene.

Dental treatment under general anesthesia in an intellectually disabled child with intellectually disabled parents

  • Han, Jeong-Hwa;Hyun, Hong-Keun;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg;Kim, Chong-Chul;Lee, Sang-Hoon;Shin, Teo Jeon
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.16 no.3
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    • pp.213-216
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    • 2016
  • Children with an intellectual disability often demonstrate lack of cooperation during dental treatment and require behavioral management. A child with mild intellectual disability can be managed adequately using restraints and medication. However, in cases of profound intellectual disability, dental treatment under general anesthesia is usually required. In cases where the patient is an intellectually disabled child who has intellectually disabled parents, it is difficult to evaluate the patient's preoperative condition and to obtain consent for treatment under general anesthesia. Furthermore, they are unable to respond to emergencies after treatment. Therefore, dental treatment should be performed under general anesthesia with hospitalization for children with an intellectual disability. This case presents the dental treatment of an intellectually disabled child, who has intellectually disabled parents, and who required general anesthesia and hospitalization.