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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY
Journal Basic Information
Journal DOI :
Korean Academy of Pediatric Dentistry
Editor in Chief :
Volume & Issues
Volume 35, Issue 4 - Nov 2008
Volume 35, Issue 3 - Aug 2008
Volume 35, Issue 2 - May 2008
Volume 35, Issue 1 - Feb 2008
Selecting the target year
STUDY ON THE REGULATION OF OSTEOCLAST AND T CELL ACTIVATION VIA CELL MEMBRANE PROTEINS OF TNF FAMILY, CD137 LIGAND AND RANK LIGAND
Hong, Sung-Joon ; Park, Jae-Hong ; Lee, Hyeon-Woo ; Lee, Keung-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 597~606
Resorption of alveolar bone in periodontitis is due to excessive differentiation and activation of osteoclasts. Bacterial antigens causing periodontitis activates CD4 T cells, which leads to expressing RANK ligand (RANKL) on CD4 T cells. RANKL binds RANK on preosteoclasts or osteoclasts, and enhances the differentiation preosteoclasts into osteoclasts and the activation of mature osteoclasts. CD137, one of TNF receptor (TNFR) family, expressed on activated T cells binds with CD137 ligand (CD137L) on antigen presenting cells. Cross-linking of CD137 by CD137L acts as T cell co-stimulatory signals and, therefore, enhances the activation of T cell. In this study, I elucidated the biological responses of CD137L on (pre)osteoclasts and RANKL on T cells in the context of in vivo interaction between T cells and osteoclasts. RAW264.7, murine monocytic cells, constitutively express CD137L. Ligation of CD137L with anti-CD137L mAb inhibited RANKL-induced osteoclast formation in a dosedependent manner. Bone marrow cells are expressed CD137L by the treatment with M-CSF. Cross-linking of CD137L abolished M-CSF/ RANKL-evoked the formation of multi-nucleated osteoclasts. Both mouse CD4 and CD8 T cells are expressed RANKL following their activation. Ligation of RANKL with OPG, the decoy receptor for RANKL, inhibited both CD4 and CD8 T cell proliferation. These effects were attributed to RANKL-induced apoptosis. These data indicate that CD137L and RANKL on osteoclasts and T cells, respectively provide them with inhibitory signal.
THE EFFECT OF EMDOGAIN. APPLICATION IN REPLANTED BEAGLE'S ANTERIOR TEETH : 3- DIMENSIONAL AND HISTOLOGIC ANALYSIS
Eom, Chan-Yong ; Choi, Yeung-Chul ; Park,, Jae-Hong ; Choi, Sung-Chul ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 607~618
This study three-dimensionally and histologically assessed the effect of Emdogain
on periodontal healing in replanted teeth in three beagle dogs which were 1 to 2 years old, weighing from 10 to 13 ㎏. Twelve maxillary and mandibular incisors were intentionally extracted and replanted after 15(Group I), 30(Group II) and 60(Group III) minutes of air dry storage with and without the application of Emdogain
. The following conclusions could be drawn from the present investigation. 1. Increased incidence of inflammatory healing response in periodontal tissue was proportional to air dry time in Both control and experimental group(P<0.001). 2. Treatment Group showed lower inflammatory root resorption, especially there were statically significant in Group I, III(P<0.001, Group II : P=0.093). 3. Inflammatory root resorption were mainly occurred in apical third(14, 15-16 section)(P<0.05, 0.001), and cervical third(1 section)(P<0.05). 4. In view of horizontal section of long tooth axis, Main root resorption area were 1, 4, 5 line area(bucco-lingual
A STUDY ON THE MICROLEAKAGE OF DENTIN BONDING SYSTEMS
Son, Jeong-Min ; Choi, Nam-Ki ; Kim, Seon-Mi ; Yang, Kyu-Ho ; Park, Yang, Ji-il ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 619~627
The objective of this study was to compare the microleakage of five adhesive systems in the enamel and dentin of permanent teeth. Class V cavity preparations with occlusal margins in enamel and gingival margins in dentin were prepared on both buccal and lingual surfaces of 25 extracted human molar teeth. The tested adhesives were: Adper Scotchbond Multi-purpose Plus Adhesive (SM), Adper Single bond 2 (SB), Clearfil SE Bond (SE), Adper Prompt L-Pop (PL) and G-Bond (GB). The results were as follows: 1. At the enamel margins, PL showed the highest leakage value(0.85), and others showed values of SB(0.55), GB(0.50), SM(0.35) and SE(0.25) in decreasing order. There were statistically significant differences in PL vs. SM and PL vs. SE(p<0.05). 2. At the dentin margins, GB showed the highest leakage value(2.10), and others showed values of SE(1.45), PL(1.40), SB(1.05), SM(0.70) in decreasing order. There were statistically significant differences in GB vs. SB and GB vs. SM(p<0.05). 3. Dentin margins showed high dye penetration rate than enamel margins in all material tested groups and there were statistically significant differences for SE, PL and GB.
DISTRIBUTION OF AIRBORNE BACTERIA BY HANDPIECE AEROSOL CONDITIO
Ko, Young-Han ; Baik, Byeong-Ju ; Kim, Jae-Gon ; Yang, Yeon-Mi ; Shin, Jeong-Geun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 628~634
In recent years, cross-contamination has become one of the noticeable issues in dental clinic. Two major routes of contamination are the direct-contamination through blood and oral secretion and the indirect-contamination through dental office equipments. Especially, air-contamination through air-floating pollutant in a confined space like hospital, and also contamination through aerosol ejected from high-speed handpiece in a dental office was interested. The purpose of this study was to understand risk of bacterial infection through aerosol from handpiece in a dental office, which will help the practitioner with prevention of contamination during dental treatment. The main findings are as follows. 1. In a comparative test, the group using handpiece has higher bacterial number than the group not using handpiece with significant statistical difference(P<0.01). 2. The group using handpiece with rubber dam has lower bacterial number than the group using handpiece
FACTORS AFFECTING MAXILLARY ANTERIOR TEETH CARIES IN PRESCHOOL CHILDREN
Jong, Seung-Yol ; Lee, Kwang-Hee ; Ra, Ji-Young ; Lee, Dong-Jin ; An, So-Youn ; Kim, Ji-Yeong ; Song, Ji-Hyun ; Kim, Yun-Hee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 635~641
The purpose of study was to investigate the etiologic factors of maxillary primary anterior caries. The subjects of study were 401 preschool children, 214 boys and 187 girls, from 36 to 71 months old of randomly selected seven nurseries in Iksan city. The prevalence of maxillary primary anterior teeth was cross-analyzed with gender, age, breast feeding or bottle feeding, length of feeding, sweet snack intake frequency, beginning of toothbrushing, and toothbrushing frequency per day. The prevalence was 43.0% in boys and 26.7% in girls, and there was significant association between the prevalence and gender in cross analysis(P<0.01). The prevalences of the shorter than 2 years of feeding group, the from 2 to 3 years group, and the longer than 3 years group were 31.0%, 43.2%, and 63.2%, respectively, and there was significant association between the prevalence and the length of feeding(P<0.01). Daily intake of sweet snacks had a significant association with the prevalence(P<0.05). There was no significant association between the prevalence and the variables of age, breast feeding or bottle feeding, beginning of toothbrushing, and toothbrushing frequency per day(P>0.05).
A RETROSPECTIVE STUDY OF THE TRAUMATIC INJURIES IN THE PRIMARY AND PERMANENT TEETH
Heo, Su-Kyung ; Choi, Nam-Ki ; Kim, Seon-Mi ; Yang, Kyu-Ho ; Park, Ji-il ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 642~651
This study was carried out to give basic information of traumatic injuries of primary and permanent teeth which can be used for diagnosis and management of injured teeth. From January 2003 to July 2007, 570 children with 1394 teeth who came to pediatric dentistry and emergency center of Chonnam National University Hospital due to the traumatized teeth participated in this study. The following data were investigated. : age, sex, causes and places of trauma, position of injured teeth, types of injury, and treatment at the first visit. 1. Trauma prevailed at the age of 1,
and the rate of males was more likely to be higher than the rate of females(1.9 : 1). 2. The main cause of injury is a fall-down injury for primary and mixed dentition, but is a traffic accident and fighting for permanent dentition, respectably. The place of injury for primary dentition is mainly home(45.3%), while street for mixed and permanent dentition. 3. The position of injured teeth according to the area in the mouth is mainly maxillary anterior teeth in both case of primary and permanent teeth and especially, the ratio of central incisors is high. 4. The periodontal tissue injury occurred the most frequently in the primary and the permanent teeth, but the ratio of hard tissue injury in the permanent teeth increased, compared with the primary teeth. 5. Among treatments at the first visit, observation without actual treatment comprised 75.6% in the primary teeth and 55.4% in the permanent teeth, respectably. The pulp necrosis occurred in 20.3% of the primary teeth and 26.6% of the permanent teeth in the case of the periodontal tissue injuries, respectably.
TREATMENT EFFECTS OF
FUNCTIONAL REGULATOR III IN MIXED DENTITION CHILDREN WITH ANTERIOR CROSSBITE
Park, Jeung-Ah ; Yang, Kyu-Ho ; Choi, Nam-Ki ; Kim, Seon-Mi ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 652~661
The purpose of this study was to evaluate the skeletal and dental effects obtained by the Frankel functional regulator III in growing children with Class III malocclusions. Cephalometric changes in thirty children at the time of mixed dentition malocclusions (initial mean age,
years; mean treatment duration,
years) were analysed. The results were as follows : 1. The skeletal effects on the maxilla showed a significant downward displacement whereas forward displacement was not significant in comparison with the control group. 2. The skeletal effects on the mandible showed statistically significant backward and downward displacement. 3. The dental effects showed statistically significant backward movement in the mandibular incisor tip and increase of overjet The results suggested that forward displacement on the maxilla was insufficient and treatment effects were caused mainly by downward displacement of the maxilla, backward and downward rotation of the mandible, and the increase of overjet during short period.
PREVENTIVE EFFECT OF FLUORIDE-CONTAINING ADHESIVE FILM MADE BY NANO
Park, Duck-Yong ; Lee, Nan-Young ; Lee, Sang-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 662~670
The purpose of this in vitro study was to evaluate the effect of fluoride containing adhesive film on prevention of enamel demineralization. Eighty bovine enamel blocks were divided randomly into 4 groups of 25: (1) APF gel applied ; (2) CavityShield
applied; (3) 3% fluoride film applied; (4) 5% fluoride film applied; Early caries lesions were produced by placing each specimen into demineralization solution at pH 4.0 for 72 hours. Then lesion of the surface microhardness were measured by the Vicke's hardness test and the lesions depth were measured by polarizing light microscope. The results of the present study are as follows: 1. Difference of microhardness value (
) between control and experimental side was the highest in group II, followed by group IV, III, I but, no significant difference was between group II, III and IV. 2. Difference of mean lesion depth (
) between control and experimental side was the highest in group II, followed by group III, IV and I but no significant difference was between group III and IV. The results of the present study indicate that the fluoride film application is more effective than APF gel and is similar to fluoride varnish application for prevention of dental caries.
The Relationship between the Salivary IgA against AgI/II of S. mutans and Dental Caries Experience among Children and Adults
Lim, Su-Min ; Kim, Jae-Gon ; Baik, Byeong-Ju ; Yang, Yeon-Mi ; Kim, Su-Kyung ; Lee, Kyung-Yol ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 671~676
AgI/II of Streptococcus mutans(S. mutans) is an important virulence factor that contributes to the pathogenesis of S. mutans-induced dental caries. In oral cavity, salivary IgA antibodies act as safeguards against enormous challenges from oral bacteria. IgA antibodies inhibit adherence of cariogenic microorganisms to hard surfaces. Analysis of salivary IgA against AgI/II can be very useful diagnostic and powerful communication tools to the dental caries The purpose of this study was to investigate correlation between salivary AgI/II specific IgA and incidence of dental caries among children and young adults. Subjects consisted of 28 children and 18 adults. They were assigned to four groups : Group I deft index
3), Group II(deft index
4), Group III(DMFT index
3), Group IV(DMFT index
4) and they was divided two groups into caries resistant group and caries susceptible group. The study group were examined caries activity and their salivary IgA was evaluated by enzyme-linked immunosorbent assay. The results are as follows : 1. There was a positive correlation between the number of S. mutans and caries activity. 2. The titer of salivary IgA against the AgI/II was significantly higher in caries resistant group than caries susceptible group(p<0.01). 3. The titer of salivary IgA against the AgI/II in Group III was significantly higher than Group II(p<0.05).
COMPARISON OF SEVERE EARLY CHILDHOOD CARIES PREVALENCES BY TWO DIAGNOSTIC CRITERIA
Lim, Kyoung-Uk ; Lee, Kwang-Hee ; Ra, Ji-Young ; Lee,, Dong-Jin ; An, So-Youn ; Kim, Ji-Yeong ; Song, Ji-Hyun ; Kim, Yun-Hee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 677~683
The purpose of study was to compare the prevalences of severe early childhood caries(S-ECC) using two different diagnostic criteria. The subjects of this study included 401 preschool children from 36 to 71 months of the randomly selected seven nurseries in Iksan city. Severe early childhood caries was defined as (1) 1 or more cavitated, missing (due to caries), or filled smooth surfaces in primary maxillary anterior teeth or (2) a decayed, missing, or filled score of
4 (age 3),
5 (age 4), or
6 (age 5) surfaces. The prevalence determined by maxillary anterior caries and the prevalence determined by dmfs were 26.7%, 28.9% in 3 years, 32.4%, 30.4% in 4 years, 39.4%, 41.3% in 5 years, and 35.4%, 35.9% in all, respectively. The results suggest that the two diagnostic criteria of the severe early childhood caries yield almost the same results.
REMINERALIZATION EFFECTS BY APF GEL AND CPP-ACP PASTE ON INCIPIENT ARTIFICIAL CARIES OF ENAMEL
Kang, Ji-Sun ; Lee, Nan-Young ; Lee, Sang-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 684~691
Many operations have been carried out using the fluoride ion to prevent and reverse dental caries. It certainly encourages remineralization and also prevents dental caries. However, the remineralization developed by these means is superficial only leaving lower levels of demineralized lesion with a degree of porosity and incomplete mineralization. We must consider its toxic effects when it is ingested for overdose. The CPP-ACP paste is able to remineralize the incipient lesion and has no harmful effects when it is ingested, because it was made form casein which is from the protein of milk. The purpose of this article is to compare the remineralization effects between APF gel and the CPP-ACP paste. we applicated the APF gel and CPP-ACP paste on the artificial enamel carious lesion. After 14 days, we measured the surface microhardness and observed the remineralized lesion under polarized light microscope. The results were as follows : 1. The surface microhardness of group III was the highest, followed by group II, and I(p<0.05). 2. The surface microhardness of group III was significantly higher than those of group I, and II(p<0.05). 3. We could observe thin and irregular remineralization layer of group II, and regular and moderate remineralization layer of group III under polirized light microscope.
EFFECT OF SURFACE TREATMENTS ON THE REPAIR BOND STRENGTH OF COMPOSITES
Choi, Jung-In ; Kim, Young-Jae ; Kim, Jung-Wook ; Lee, Sang-Hoon ; Kim, Chong-Chul ; Hahn, Se-Hyun ; Jang, Ki-Taek ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 692~699
The purpose of this study was to evaluate the effect of surface treatment on the shear bond strength between new and old composite resin. The prepared resin specimens were separated 6 groups, and each group then received a different surface treatment. Then the repair material was added. Shear bond strengths for repair were measured after 7 days and the results were analyzed by using one way ANOVA. The results were as follows; 1. Group 3, 4(air abrasion) showed significantly higher shear bond strength than Group 1(phosphoric acid)(p<0.05). Group 5, 6(diamond bur) showed higher bond strength than Group 1(phosphoric acid) but not significantly different( p>0.05). 2. Group 2(self-etching adhesive) showed lower shear bond strength than Group 1(phosphoric acid) but not significantly different(p>0.05). 3. There was no statistically significant difference between Group 3(air abrasion) and Group 4(air abrasion+etching). 4. There was no statistically significant difference between Group 5(diamond bur) and Group 6(diamond bur+etching). In conclusion, the surface treatment with air abrasion resulted in higher repair bond strength than other methods. Repair bond strength was not significantly affected by acid etching.
A SURVEY OF GUARDIANS' COGNITION LEVEL AND SATISFACTION RATE ABOUT CONSCIOUS SEDATION
Choi, Han-Ju ; Park, Jae-Hong ; Kim, Gwang-Chul ; Choi, Sung-Chul ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 700~708
The aim of this study was to recognize guardians' desire and awareness on sedation, and to guide guardians' satisfaction and cooperation. Followings are the conclusion : 1. Information supply about conscious sedation were restrictive and insufficient. 2. Both first-visit guardians and guardians of sedated patients were interested in decrease of dental fear. 3. Both first-visit guardians and guardians of sedated patients were satisfied with psychological improvement better than behavior improvement. Therefore, decrease of patients'ear and anxiety was essential. 4. Both first-visit guardians and guardians of sedated patients didn't recognize accurate safety of conscious sedation.
OCULOCUTANEOUS ALBINISM : A CASE REPORT
Choi, Ji-Eun ; Choi, Nam-Ki ; Kim, Seon-Mi ; Yang, Kyu-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 713~717
Albinism is a disease caused by partial or complete failure of melanin production in the skin, hair and eyes despite the presence of normal number, structure and distribution of melanocytes. Typical aspects are white-colored skin, blonde-brown hair, blue-brown irides and a prominent red reflex. Three main categories of albinism are oculocutaneous, ocular and localized albinism, and also they are divided into many subgroups. Therefore, appropriate treatment plan and dental direction would be differentiated according to them. This case report was about oral conditions and treatment of the oculocutaneous albinism patient with mental retardation who was refered due to developmental delay of teeth and treated with teeth extraction, restoration and space maintenance etc.
IMPACTED PREMOLARS AND MOLARS ASSOCIATED WITH DENTIGEROUS CYSTS IN CHILDREN
Shin, Cha-Uk ; Kim, Young-Jae ; Kim, Jung-Wook ; Jang, Ki-Taek ; Lee, Sang-Hoon ; Kim, Chong-Chul ; Hahn, Se-Hyun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 718~724
Tooth impaction is a frequently observed eruption anomaly in pediatric dental practice. Young patients with impacted or unerupted teeth have more prediction for dentigerous cyst formation. Dentigerous cyst presents radiographic features, unilocular or multilocular radioluscency. Cysts occur most frequently in the premolar region except third molar. Dentigerous cysts can grow to a considerable size, and large cysts may be associated with a painless expansion of the bone in the involved area. Extensive lesions may result in facial asymmetry, osseous destruction, root resorption of proximal teeth and displacement of associated tooth. The nature of the causative tooth influences the type of surgical treatment required for the dentigerous cyst. If the cyst is associated with a supernumerary or wisdom tooth, complete enucleation of the cyst along with extraction of tooth may be the first treatment choice. Otherwise, preservation of the associated teeth should be considered to prevent a young patient from psychological and mental trauma because of the loss of tooth. We should consider the degree of tooth displacement, osseous destruction and growth pattern of oromaxillofacial area when planning treatment. Thus a proper and logical treatment planning can help a proper growth and development of oromaxillofacial area and can save the patient from a psychological and mental trauma. This report describes 4 cases of the management of impacted premolars and molars associated with dentigerous cysts in children.
NEVOID BASAL CELL CARCINOMA SYNDROME : A REPORT OF CASE
Heo, Su-Kyung ; Choi, Nam-Ki ; Kim, Seon-Mi ; Yang, Kyu-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 725~730
Nevoid basal cell carcinoma syndrome is an ecto-mesodermal polydysplasia with numerous manifestations that affect multiple organs. The syndrome is an autosomal dominant inherited, with a high penetration and visible expression. The syndrome is characterized by a series of associated anomalies such as cutaneous, dentofacial, skeletal, ophthalmologic, neurological, and genital anomalies. Generally, the jaw cysts are multiple odontogenic keratocysts, affecting any area of maxilla and mandible. Multiple odontogenic keratocysts of this syndrome are more recurrent than the keratocysts of non-syndrome, thus they are treated aggressively for complete removal. We report a case of multiple jaw cysts associated with nevoid basal cell carcinoma syndrome. In clinical and radiological examinations, frontal bossing, hypertelorism, mild mental retardation and two odontogenic keratocysts in both the maxilla and mandible were observed. Two cysts were treated by marsupialization. For the management of eruption of unerupted teeth, periodic recall check and orthodontic treatment are required.
ODONTOGENIC KERATOCYST OF A FEMALE CHILD, A CASE REPORT
Lee, Ji-Min ; Park, Jae-Hong ; Kim, Kwang-Chul ; Choi, Sung-Chul ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 731~736
Odontogenic keratocyst is classified as a developmental odontogenic cyst and is believed to arise from cell rests of the dental lamina. It accounts for 3% to 11% of all jaw cysts and they occur twice as often in the mandible as in the maxilla. Histologically, the cysts are lined by stratified, keratinizing, squamous epithelium. Daugther cysts or microcysts are often observed microscopically. The recurrence rate has been reported variously, but is known by its high recurrence rate. These lesions are more common in males than in females, occur over a wide age range and are typically diagnosed during the 2nd and 3rd decade. The diagnosis depends on the cyst’s microscopic features and is independent of its location and radiographic appearances. This cyst is a radiolucent lesion that is often multiloculated, has a smooth or scalloped border. The cyst is characteristically located in the body and ramus of the mandible, and often occurs in conjunction with an impacted tooth. This case report describes an odontogenic keratocyst on the lower right molar area of an 8-year-old girl. The cyst was removed under the general anaesthesia, and is being checked regularly for any recurrences.
THE MANAGEMENT OF REGIONAL ODONTODYSPLASIA OF PERMANENT TEETH IN CHILDREN
Lee, Hyung-Sook ; Kim, Jae-Moon ; Kim, Shin ; Jeong, Tae-Sung ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 737~743
Regional odontodysplasia is a relatively rare developmental anomaly of dental hard tissue with characteristic clinical, radiographic and histologic features. It requires a continuous and multidisciplinary approaches, and the aim of treatment for these patients should include aiding mastication, improving aesthetics, maintaining normal vertical dimension and space, allowing normal jaw growth and eruptional management of affected teeth. This report describes three cases of regional odontodysplasia with 2-5 years of follow-up. Conservative treatment is chosen to preserve the affected teeth as long as possible, and periodic radiographic and clinical examination was done. During this time, all teeth except one showed progressive development. An interesting finding observed in our cases was that each tooth even in the same person showed different degree of tooth development and eruption rate. Thus, we colcluded that the treatment plan for regional odontodysplasia should be conservative and individualized and based on the assessment of each tooth.
DENTAL FLUOROSIS RESULTING FROM WATERWORKS CONTAINING EXCESS FLUORIDE : CASE REPORTS
Lee, Won-Ju ; Park, Ho-Won ; Lee, Ju-Hyun ; Seo, Hyun-Woo ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 744~749
Fluoride is a very effective element that can help prevent dental caries. The most economical and safest way of using fluoride is to add fluoride to the tap water. However, care must be taken to maintain the adequate concentration of fluoride in drinking water by regular check-up. Unless, dental fluorosis may occur. We are presenting a case of concurrent occurrence of fluorosis in people living in the same village in Korea, where drinking water contained high concentration of fluoride.
INTRAOSSEOUS TOOTH MIGRATION OF IMPACTED MESIODENS IN THE INVERTED POSITION
Lee, Suk-Woo ; Lee, Jae-Ho ; Kim, Seong-Oh ; Choi, Hyung-Jun ; Sohn, Hyung-Kyu ; Choi, Byung-Jai ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 750~756
Supernumerary teeth are frequently found in the anterior portion of the maxilla and develop as a result of abnormal proliferation of the dental lamina during tooth germ formation, caused by genetic or environmental factors. They may result in various complications, such as eruption interference, displacement, rotation of adjacent teeth, diastema, eruption into the nasal cavity, and development of dentigerous cyst. The optimal time for surgical extraction of supernumerary teeth has been a controversial issue. Someone prefer early surgical extraction because supernumerary teeth can cause eruption interference and displacement of adjacent teeth, eventually altering occlusion. Others prefer to delay surgical extraction until
years of age in consideration of root maturation of the adjacent teeth and also patient's behavior. When surgical extraction of supernumerary teeth is postponed, there is possibility that impacted supernumerary teeth in the inverted or horizontal position move toward the nasal cavity, hard palate, or premolar area. When such intraosseous tooth migration is combined with the vertical growth of the maxilla, surgical approach becomes even harder. Therefore, possibility of intraosseous tooth migration should be considered as an important factor when deciding appropriate time for surgical extraction. We are presenting cases of mesiodens which showed intraosseous migration during
years of follow-up period since the first diagnosis had been made at the
years of age.
ORTHODONTIC TRACTION OF HORIZONTALLY IMPACTED MAXILLARY INCISORS: CASE REPORTS
Kim, Mi-Ni ; Kim, Young-Jae ; Kim, Jung-Wook ; Jang, Ki-Taek ; Kim, Chong-Chul ; Hahn, Se-Hyun ; Lee, Sang-Hun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 757~765
Maxillary central incisor impactions occur infrequently. Their origins include various local causes, such as odontoma, supernumerary teeth, space loss, and disturbances in the eruption path, also trauma and apical follicular cysts. Impacted teeth can cause serious dental and aesthetic difficulties as well as psychological problems especially in anterior regions. Although the impaction of maxillary incisor occurs less frequently than that of the maxillary canine, it is of concern to parents during the early mixed dentition stage because of the uneruption of the tooth. Forced eruption of impacted teeth should be considered in young patients because this technique can lead to suitable results from a periodontal, occlusal, and esthetic perspective at an earlier stage better than with other treatment options. This report presents the surgical and orthodontic treatment of cases with horizontally impacted and dilacerated maxillary central incisors. For each patient, we used the closed eruption method, placed an attachment on the impacted tooth on surgery, and fully closed the flap. Traction was applied immediately. The impacted tooth erupts through the healed tissue in a manner resembling normal eruption.
IDIOPATHIC GINGIVAL FIBROMATOSIS AT BIRTH
Lee, Hyo-Seol ; Choi, Hyung-Jun ; Choi, Byung-Jai ; Sohn, Hyung-Kyu ; Lee, Jae-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 35, issue 4, 2008, Pages 766~770
Gingival fibromatosis is a rare condition characterized by varying degrees of gingival hyperplasia. Gingival fibromatosis usually occurs as an isolated disorder or can be associated with a variety of other syndromes. It usually appears at the time of eruption of permanent dentition but, can develop at the time of eruption of the primary dentition and rarely at birth. It may deform palatal contour and subsequently restrict the tongue movement, resulting in interference during speech and mastication. In addition, it incapacitates maintenance of normal lip closure. A 14-month-old girl visited the department of pediatric dentistry, Yonsei University Dental Hospital, for the congenital gingival overgrowth. There was no one in the family, who showed similar pattern of gingival growth. The intraoral clinical examination revealed generalized severe gingival enlargement throughout the maxillary and the mandibular arches. Enlarged gingival tissue was pink and had firm consistency. She was referred for chromosomal analysis, which confirmed absence of any known syndrome. Under local anesthesia, "Punch-biopsy" was performed on the labial area, and the specimen was histologically diagnosed as gingival fibromatosis. For she did not have any medical problem nor familiar history, she was diagnosed as having idiopathic gingival fibromatosis. Regarding her age and behavior, close follow-up was decided.