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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 36, Issue 4 - Nov 2009
Volume 36, Issue 3 - Aug 2009
Volume 36, Issue 2 - May 2009
Volume 36, Issue 1 - Feb 2009
Selecting the target year
ERUPTION PATTERN OF THE MANDIBULAR FIRST MOLAR USING THE CONE BEAM CT
Shin, Jeong-Keun ; Kim, Jae-Gon ; Baik, Byeong-Ju ; Yang, Yeon-Mi ; Jeong, Jin-Woo ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 325~336
The purpose of this study was to investigate the eruption pattern of the mandibular first molar in sagittal, frontal and horizontal views using the cone beam CT scanning. CT images were obtained from healthy 83 children (42 boys, 41 girls) between 3 to 10 years of age with a normal dentition according to Nolla stage. 1. In the frontal and horizontal view, the intermolar width decreased continuously with stage and slightly increased at the last stage. 2. In the sagittal and frontal view, eruption distances from occlusal plane were observed the largest change between stage 5 and 7. 3. In the horizontal and sagittal view, mandibular first molar from distal surface of primary second molar moved distally between stage 4 and 6. 4. In the sagittal view, angle from occlusal plane to mesio-distal axis increased between stage 4 and 8. 5. In the frontal view, angle from occlusal plane to bucco-lingual axis increased continuously during all stage. 6. In the horizontal view, angle from midsagittal plane to long axis increased between stage 5 and 8.
CORRELATION OF CARIES ACTIVITY BETWEEN MOTHERS AND CHILDREN WITH CARIOGRAM AND EVALUATION OF CARIES RISK FACTORS
Lee, Suk-Woo ; Song, Je-Seon ; Choi, Byung-Jai ; Choi, Hyung-Jun ; Lee, Jae-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 337~347
Dental caries during infantile and early childhood period is a complex disease resulting from multiple caries factors. Streptococcus mutans(S. mutans) plays a critical role in the initiation of caries, and its early transmission through mothers provides a strong etiologic factor for future development of caries in the primary dentition. Therefore, early detection of caries risk factor is important for prevention of caries. Recent studies about etiologic factors of caries have brought advent of various tools for caries risk assessment in order to predict progress of caries more accurately. Cariogram is a common tool for caries risk assessment, which illustrates present caries risk assessment and correlation of caries risk factors for an individual graphically. The aim of this study was to assess if there is any correlation in the level of S. mutans and caries activity and to verify the effect of caries risk factors between children with age ranging from 3 to 5 years with severe early childhood caries(S-ECC) and their mothers using caries-related salivary test and Cariogram. The results of this study were as follows. 1. Children with S-ECC had a statistically higher level of Streptococcus mutans compared to caries-free children(p<0.05). 2. There was significant correlation between mothers and their children in the aspect of the level of Streptococcus mutans(p<0.05). 3. When caries activity was assessed using Cariogram, significant correlation between mothers and their children was found(p<0.05). 4. When each caries risk factor was evaluated for its affect on caries activity, host was more influential factor compared to microorganism and diet in children. Based on these results, we could conclude that assessing the level of S. mutans can be an effective tool for predicting possibility of caries formation in future. Since prediction of future caries progression and evaluation of caries risk factor became possible with Cariogram, we may conduct early and preventive measures for treatment of caries.
MICRO-TENSILE BONDING STRENGTH OF REGIONAL PRIMARY MOLAR DENTIN
You, Jung-Eun ; Choi, Yeong-Chul ; Chio, Sung-Chul ; Park, Jae-Hong ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 348~357
The purpose of this study was to evaluate the micro-tensile bond strength (
) of four luting resin to regional dentin of human primary teeth. Dentin from non-carious primary molars were prepared from different regions (s, superficial dentin; d, deep dentin; c, cervical dentin), and divided into groups based on anatomical locations and types of luting resins (Scotchbond Multi-purpose : SB ; One-Step : OS ; AdheSE Bond : ASE ; G-Bond : GB) : SB-s, SB-d, SB-c; OS-s, OS-d, OS-c; ASE-s, ASE-d, ASE-c ; GB-s, GB-d, GB-c. Luting resins were used according to the manufacturers' instructions, to bond
Core Build-Up Composite) to the exposed dentin specimens in the light-curing mode. After storage for 1 day,
was tested at a cross-head speed of 1 mm/min. Data were analyzed with T-test and two-way ANOVA. The bonding interface and fractography analyses were performed with SEM. The results were as follows : 1.
to superficial dentin was significantly higher than to deep dentin for SB(p<0.05). But there were no significant differences in regional
among OS, ASE, GB(p>0.05). 2. There were no significant differences in
to superficial dentin among each groups. But, in deep dentin,
of SB-d was significantly lower than those of OS-d, ASE-d, and GB-d(p<0.05).
of OS-d was significantly higher than those of GB-d(p<0.05), but there were no significant differences in
of ASEd. There were no significant differences among
of ASE-d, OS-d, and GB-d.
THE EFFECT OF FERMENTED MILK ON VIABLE CELL COUNT AND BIOFILM FORMATION OF STREPTOCOCCUS MUTANS
Shin, Hye-Sung ; Kim, Seon-Mi ; Choi, Nam-Ki ; Yang, Kyu-Ho ; Kang, Mi-Sun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 358~366
Lactic acid bacteria worked positively on gastrointestinal tract and oral environment. So I selected commercial five fermented milks and milk, and then I evaluated their effect of growth inhibition and biofilm formation of cariogenic bacteria, Streptococcus mutans. And also calculated the acidity, buffering capacity, concentration of Ca and P ion and pH change of those drinks. After adding S. mutans to fermented milks viable cell count of S. mutans in milk was not statistically different but those in all fermented milks were decreased as concentration of fermented milk increased. When I measured the amount of formed biofilm in 10% fermented milks and milk with S. mutans and compared with those without S. mutans, the amount was decreased in Active GG and Bulgaris while being increased in Tootee, Ace and milk(P<0.05). The fermented milk with the lowest pH value was E5(3.48
0.01), and the highest was Bulgaris(4.19
0.02). pH change of the fermented milks and milk with S. mutans was measured. The highest acid producing fermented milk was Bulgaris, and followed by Active GG, Ace, Tootee, E5, Milk. These results indicated that fermented milks had caries activity due to the value of initial acidity and acid producing capacity. But, concentrated fermented milks had the inhibitory effect against S. mutans, and also had high volume of Ca and P ion that protected teeth. So I suggest that they have positive effect on teeth.
THE THERAPEUTIC EFFECT OF FLUORIDE-CONTAINING ADHESIVE TAPE ON DENTIN HYPERSENSITIVITY
Jang, Hyang-Gil ; Lee, Nan-Young ; Lee, Sang-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 367~376
In this clinical research, the fluoride tape(SCMC-T-5) using fluoride(NaF) was developed and manufactured and the treatment effect of the fluoride tape in dentin hypersensitivity patients was evaluated and compared with the effect of existing fluoride varnish(
). Twenty two healthy adult patients(88 teeth) having dentin hypersensitivity participated in this clinical research and they were divided into two groups. The fluoride product was applied according to the manufacturer's instruction and the level of pain in the tooth after giving irritation using compressed air and ice stick was measured just after the application, after 3 days, after a week and after 4 weeks each using visual analog scale(VAS). In the experimental group, compared with the early VAS scores, all other VAS scores showed the significant decreases statistically. In the control group, all VAS scores except the VAS score of 34.091(air) measured 3 days after(using the irritation examination by the compressed air) showed the significant decreases statistically when compared with the early VAS scores. The fluoride tape and fluoride varnish used in this clinical research were able to treat the dentin hypersensitivity effectively.
A CHANGE OF THE SALIVARY FLUORIDE CONCENTRATION AFTER FLUORIDE-CONTAINING TAPE APPLICATION
Park, Seung-Hyo ; Lee, Sang-Ho ; Lee, Nan-Young ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 377~384
The purpose of this study is to investigate the residual fluoride concentration of fluoride tape in oral cavity which made by spraying NaF on carboxymethylcellulose base. After 1, 3, 5, 7 hours and 1, 2, 3 days of applicating APF gel(60seconds
, 1.23% APF gel, Group I), Fluoride varnish(
, 5% NaF, Group II) and Fluoride tape(SCMC-T-5, 5% NaF, Trial product, Group III) in oral cavity of 27 healthy adults in their twenties, the result of fluoride concentration in unstimulated whole saliva which measured by using fluoride sensitive electrode made up to following conclusion. 1. Until 7 hours after application in every group, it showed significantly higher fluoride concentration in saliva than baseline value but at 1, 2, 3 days after application, there were no significant differences between measurements and baseline value(p>0.05). 2. Until 7 hours after application at every time, mean fluoride concentration in saliva was higher in the order of Group II, I and III. 3. 1 hour and 3 hours after application, Group II revealed significantly higher fluoride concentration than Group III(p<0.05), but there were no significant differences between Group Ⅰ and Group III in every time.
PHYSIOLOGIC INTERDENTAL SPACES AND PROXIMAL CARIES IN THE ANTERIOR MAXILLARY PRIMARY DENTITION
Kim, Jin-Young ; Lee, Kwang-Hee ; La, Ji-Young ; An, So-Youn ; Jeong, Seung-Yeol ; Im, Kyeong-Uk ; Ban, Jae-Hyurk ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 387~393
The purpose of this study was to assess the relationship between interdental spaces and proximal caries in maxillary anterior primary teeth. 555 children aged 3-7 inhabit in Iksan were divided into two groups, depending on the presence of interdental space which was detected by a dental explorer. They were determined to have proximal caries if cavity was formed or the enamel surface was softened. The results were as follows : 1. Regarding interdental spaces, 77.4% had primate spaces; 54.4% had developmental spaces between central and lateral incisor, and 39.0% between central incisors. 2. Interproximal caries incidences in right primary canine, lateral incisor, and central incisor were 6.3%, 14.7%, and 33.5%, respectively. Also interproximal caries incidences in left primary central incisor, lateral incisor, and canine were 33.7%, 16.0%, and 4.7%, respectively. 3. Children with more interdental spaces had less caries incidence, but the relationship was weak(r=-0.024). 4. The mean caries incidence was higher in absence of interdental space of maxillary primary incisors than in presence of space. The mean caries incidence with no interdental space was twice as high as that with presence of interdental space.
EVALUATION OF THE EFFECTIVENESS OF THERAPEUTIC SEALING ACCORDING TO THE LESION DEPTHS OF PROXIMAL EARLY CARIES
Lee, Geum-Lang ; Ahn, Myung-Ki ; Jeong, Tae-Sung ; Kim, Shin ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 394~403
As the minimally invasive approach against white spot like early caries lesions in proximal surfaces of the teeth, therapeutic sealing has been introduced and studied for effective materials and methods to arrest the early caries lesion effectively, which is still going on. This study was performed for the purpose of evaluating its validity for the non-cavitated lesions according to the depth from surface using therapeutic sealing followed by artificial caries induction and evaluation with micro-CT, and we obtained the results as follows. 1. It was revealed that the deeper the caries lesions are, the lower radiation intensity at lesion body areas in pre-treatment specimen. 2. In the sealed groups, there were no differences in radiation intensity between pre- and post-treatment, whereas there were significant decreases in unsealed groups(p<0.05). 3. Even in the specimens with the lesions reaching deeply into DEJ, the effect of sealing was significant(p<0.05). Conclusively, it was thought therapeutic sealing can be an effective tool against the early caries lesions, regardless of their depth into tooth, unless cavitated.
THE STUDY FOR THE MINERAL CONTENTS OF BOTTLED WATER
So, Yu-Ryeo ; Baik, Byeoug-Ju ; Kim, Jae-Gon ; Yang, Yeon-Mi ; Kim, Ha-Na ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 404~411
Drinking water has lots of minerals, especially calcium, sodium, kalium, magnesium, and fluoride must be labelled on the bottle about their contents. Minerals like calcium, magnesium, and fluoride have influence to the tooth development. Appropriately taking some minerals, dental caries can be prevented somewhat degree. There is no guide line about innoxious minerals like calcium and magnesium, however, noxious mineral like fluoride, should be contained less than 2 mgF/L according to the current drinking water standard. Hereupon, it is necessary to recognize the concentration of fluoride in drinking water, so I studied 15 samples of domestic drinking water on sale about the concentration of calcium and magnesium, fluoride. The results obtained were as follows ; 1. 14 drinking waters in 15 samples showed various Ca concentration. The average Ca concentration is 34.68
31.84 mg/L, the highest is 128.91
1.85 mg/L and the lowest is 2.0
0.02 mg/L. 2. 13 drinking waters in 15 samples indicate the Mg concentration. The average concentration is 9.22
11.06 mg/L, the highest is 30.43
0.75 mg/L and the lowest is 0.0 mg/L. 3. 11 drinking waters in 15 samples indicate the F concentration. The average concentration is 0.25
0.33 mg/L, the highest is 1.13
0.04 mg/L and the lowest is 0.01
0.03 mg/L. All samples are satisfied the current drinking water standard, 2 mg F/L.
LONGITUDINAL STUDY OF CRANIOFACIAL GROWTH BY LATERAL CEPHALOMETRIC ANALYSIS
Yang, Kyu-Ho ; Park, Chang-Hun ; Son, Jung-Soo ; Kim, Nak-Hyun ; Choi, Nam-Ki ; Kim, Seon-Mi ; Kim, Ki-Baek ; Shin, Hye-Sung ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 412~419
The purpose of this study was to provide the reference data evaluating the treatment effect of orthopedic appliances. The skeletal and dental growth increments were measured in 24 normal mixed dentition children (boys: 14, girls: 10) by three serial lateral cephalograms: initial mean age: 9
1.3 years, mean observation period: 13
1.3 months. Cephalometric changes were analysed. The results were as follows: 1. In boys, the maxilla showed forward and downward growth pattern and the mandible showed forward growth pattern (p<0.05). In girls, the maxilla and mandible showed forward and downward growth pattern(p<0.05). 2. Horizontal growth of both maxilla and mandible in girls was superior to those in boys (A point; girls: 2.39mm, boys: 1.26mm, with p<0.05), whereas vertical growth of both maxilla and mandible in boys was similar to those in girls. 3. The change in tooth axis showed labioversion of upper incisor (p<0.01) and comparatively stable lower incisor position.
THE EFFECT AND RELAPSE PATTERN OF FACEMASK THERAPY FOR CLASS III MALOCCLUSION CHILDREN
Kim, Ji-Yeon ; Yoo, Seung-Eun ; Lee, Ji-Hyun ; Ki-Tae, Ki-Tae ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 420~426
The purpose of this study was to evaluate skeletal and soft tissue changes that occur after using a facemask for treatment of skeletal class III malocclusion, and to assess the relapse pattern when no retention appliance was used. Fifteen skeletal class III malocclusion patients were treated with a facemask for an average of 12 months. No retention appliance was used during the 1 year follow-up period. Cephalograms were taken during pretreatment, posttreatment, and the 1 year follow-up. Cephalograms were traced, analyzed, and the results were compared between cephalograms. All patients showed significant sagittal skeletal changes after treatment, but they also showed a significant relapse during the 1 year follow-up period when no retention appliance was used. Despite the relapse, the sagittal skeletal changes that remained were still significant. Vertical skeletal change was also significant after treatment, but the total change was not significant after a 1 year follow-up due to relapse. In soft tissue changes, facial convexity and upper lip position improved after treatment and this change remained significant after the 1 year follow-up period. Facemask therapy is therefore an effective method for treatment of skeletal class III malocclusion, however, retention is imperative to maintain the treatment effect.
COMPARATIVE STUDY OF PHYSICAL PROPERTIES FOR VARIOUS BAND CEMENTS
Yang, Kyu-Ho ; Kim, Ki-Baek ; Kim, Seon-Mi ; Choi, Nam-Ki ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 427~432
The aim of this study was to compare the shear-peel strength and the fracture site of 5 commercially available orthodontic band cements. One hundred molar bands were cemented to extracted human 3rd molars. The specimens were prepared in accordance with the manufacturer's instructions for each cement. After storage in a humidor at
for 24 hours, the shear debonding force was assessed for each specimen using an universal testing machine with crosshead speed of 2 mm/minute. Maximal failure stress was converted to mean shear-peel strength, MPa. The predominant site of band failure was recorded visually for all specimens as either at the band/cement or cement/enamel interface. Mean shear-peel strength of Ormco was the highest(2.44
0.57), followed by Fuji
0.28). There were statistically significant differences between Ormco and
, Ormco and 3M
, and Fuji
(p<0.05). The predominant site of bonding failure for bands cemented with the Ormco was at the band/cement interface, whereas bands cemented with Ultra
failed predominantly at the enamel/cement interface. There was no significant difference among the other cements(Fuji
THE MANDIBULAR GROWTH EFFECT OF THE BOTULINUM TOXIN TYPE A INJECTION INTO UNILATERAL MASSSTER MUSCLE OF GROWING RAT
Kwak, So-Youn ; Park, Ki-Tae ; Kim, Ji-Yeon ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 433~439
The purpose of this study was to assess the effect on mandibular growth of botulinum toxin type A (BTXA) injection into the unilateral massester muscle of growing rats at three different growing stages. Thirty six male Sprague-Dawley rats were divided into three groups according to the age (group 1: 4 week-old, group 2: 5week-old, group 3: 6week-old). Then each group was randomly divided into 3 subgroups (control group, unilateral injection group, bilateral injection group). Experimental animals were sacrificed after 4 weeks. Then the jaw measurements were evaluated. The results were as follows: 1. In the group 1, mandibular body length, condylar height and coronoid process height of the unilateral group(BTXA side) and the bilateral group were shorter than those of the control group (p<0.05). 2. In the group 2, anterior region height, condylar height, coronoid process height of the unilateral group(BTXA side) and the bilateral group were shorter than those of the control group (p<0.05). 3. In the group 3, mandibular body length, condylar height, coronoid process height of the unilateral group(BTXA side) and the bilateral group were shorter than those of the control group (p<0.05). 4. There was no significant difference in mandibular measurements between the control side and the injection side in the unilateral group in all age groups (p>0.05).
MICROHARDNESS AND SURFACE ROUGHNESS OF SEALANT AND FLOWABLE COMPOSITE RESINS
Yang, Kyu-Ho ; Choi, Nam-Ki ; Kim, Seon-Mi ; Choi, Ji-Eun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 440~447
This study was performed to compare the wear resistance of sealant and flowable resins for analyzing the effect of flowable resin as a sealant in preventive resin restorations. Specimens were made and Vicker's hardness number and surface roughness were measured. SEM observations of the polished and abraded surfaces were established. Kruskal-Wallis rank test and Mann-Whitney U test at the significant level of
=0.05 were used. The following results were obtained: 1. The microhardness was decreased among groups in following order: Z350 (3M ESPE, U.S.A), Estelite (Tokuyama Dental, Japan) and Ultraseal (Ultradent, U.S.A). There were significant differences in all groups (p<0.0001). 2. The surface roughness was decreased among groups in following order: Ultraseal XT plus, Palfique Estelite LV and Filtek Z350 flowable. However, there is no statistically significant differences in roughness among Estellite, Z350 and Ultraseal at the significance level of
=0.05, with p=0.116 3. SEM observation of the unworn and worn surfaces revealed the qualitative differences in the wear appearance among groups. The results in this study indicate that flowable resin is better than sealant in aspect of physical properties.
A SURVEY OF PEDIATRICIANS REGARDING INFANT ORAL HEALTH CARE
Ju, Tae-Joon ; Park, Ho-Won ; Lee, Ju-Hyun ; Seo, Hyun-Woo ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 448~455
For prevention of ECC, the Korean Academy Of Pediatric Dentistry(KAPD) advocate that Children should be seen as early as 6 months of age after the first tooth erupts, or 12 months of age. Pediatrics have increased access to new mothers and children 6 to 12 months while dentists does not see young children unless there are urgent problems. Therefore, they have an opportunity to impact infant oral health care. This study's purpose was to examine pediatricians' awareness and experience about infant oral health care. For the study, we surveyed of 150 pediatricians in korea. The survey comprised 10 questions related to infant oral health care and the recommended age a child go for their first dental visit. The results were as follows: 1. Most respondents had been referred children to a dentist for treating ECC and more than half of respondents reported that they did not do oral examination in their practice. 2. The majority of surveyed pediatricians are not advising patients to see the dentist by 1 year of age. 3. The surveyed pediatrician's awareness of infant oral health care is insufficient. The oral health education should be reinforced. 4. There is a need for increased infant oral health care education in the medical and dental communities.
ORAL MENIFESTATION AND TREATMENT STRATEGIES IN CLEIDOCRANIAL DYSPLASIA
Park, Hee-Suk ; Kim, Young-Jin ; Kim, Hyun-Jung ; Nam, Soon-Hyeun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 456~463
Cleidocranial dysplasia(CCD) is a congenital disorder of skeletal and dental abnormality, which is a mesodermal dysfunction influencing many tisssues and organs. Skeletal abnormalities in CCD are delayed closure of cranial suture and fontanelle, presence of wormian bone and clavicle aplasia. CCD also has an effect on long bones, phalanges, spine, pelvis, muscles, and central nervous system. Dental manifestations include retention of deciduous teeth, multiple supernumerary teeth, delayed eruption or impaction of permanent teeth and formation of cysts around nonerupted teeth. However, due to lack of any substansive medical or physical disability, diagnosis is often late, thereby causing masticatory and psychological problems caused by delayed eruption of permanent teeth after exfoliation of deciduous teeth. For this reason, CCD requires early diagnosis, and the patient's appearance must be improved. Also, provision for a functional masticatiory mechanism by treatment of surgical removal of supernumerary teeth followed by orthodontic eruption of the natural permanent teeth at an adequate time is necessary.
MAXILLARY MOLAR DISTALIZATION WITH THE BONE-SUPPORTED PENDULUM
Jang, Yong-Gul ; Park, Ho-Won ; Lee, Ju-Hyun ; Seo, Hyun-Woo ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 464~474
To distalize the maxillary molars, the traditional techniques such as extra-oral traction, Wilson distalizing arches, removable spring appliances and Schwarz plate-type appliances have been used. But, these need considerable patient cooperation. For minimal patient compliance, many practitioners use the pendulum appliances. Several clinical studies demonstrated pendulum is effective molar distalization appliance in the growing patient(using the premolars and the palate as anchorage). But unfortunately, maxillary anterior teeth also shift mesially as the molar moves distally. As a result anchorage loss is occurred. To overcome these disadvantages, we used bone-supported pendulum, combined the conventional pendulum with Skeletal Anchorage System(SAS). The miniscrew was implanted in the anterior paramedian region of the median palatal suture, which has comparatively sufficient bone thickness and is low risk to damage on the dental follicles. We report three cases, using bone-supported pendulum for the maxillary molar distalization in children. After treatment, we find out anchorage stability, minimal unfavorable anterior tooth movement and sufficient molar distalization.
MANAGEMENT OF INFRAOCCLUDED MANDIBULAR SECOND PRIMARY MOLARS: CASE REPORT
Kwak, So-Youn ; Park, Ki-Tae ; Kim, Ji-Yeon ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 475~480
An infraoccluded tooth is a tooth that has failed to erupt to be in line with adjacent teeth in the vertical plane of occlusion. Multiple complications can occur as a result of an infraoccluded tooth. Tipping of neighboring teeth, loss of space opposing teeth elongation, increased susceptibility to dental caries and abnormal eruption path, impaction and rotation of permanent successor are the consequences of infraocclusion of primary molar. Therefore, early diagnosis and treatment is the key to prevent the complications. Treatment options can be periodic follow-up, temporary restoration or extraction of the infraoccluded tooth depending on the presence of the successor, the extent of infraocclusion and the extent of tilting of the neighboring teeth. The infraoccluded primary molars with permanent successors present tend to exfoliate normally. However, failure to do periodic check up of the infraoccluded teeth may lead to serious complications. In these cases, surgical extractions are often necessary after space regaining and space maintainers should be placed until the eruption of the permanent successors are completed.
DENTIGEROUS CYST ASSOCIATED WITH FORMOCRESOL PULPOTOMY
Ju, Tae-Joon ; Park, Ho-Won ; Lee, Ju-Hyun ; Seo, Hyun-Woo ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 481~488
Buckley's formocresol was first introduced as a pulp medicament in 1904, and since 1930, it has been the treatment of choice for primary molar pulpotomies. Formocresol has fixation effect of pulp tissue and high clinical success rate. But side effect such as displacement and loss of permanent successor, amelogenesis imperfecta, cyst formation, mutation by general absorption, possibility of cancer induction have been reported. Of those, dentigerous cyst can form in the periradicular region after formocresol pulpotomy caused by an alteration of the reduced enamel epithelium, which result in fluid accumulation between the epithelium and the tooth crown. The present case describes a 6-year-old girl who had accidentally discovered in the panoramic radiograph a single, well-defined, radioluscent area enclosing the second unerupted mandibular premolar. The second left primary molar had been pulpotomizied 3 year before. Surgical treatment was carried out, the primary molar was extracted and cystectomy was performed under local anesthesia. In the extracted second primary molar, formocresol cotton pellet was left in the pulp chamber. Histologic study confirmed the suspected diagnosis of dentigerous cyst. This report present a case of dentigerous cyst associated with inadequate formocresol pulpotomized deciduous molar.
TREATMENT OF MULTIPLE JAW KERATOCYSTIC ODONTOGENIC TUMOR IN CHILDREN'S JAW BONE : A CASE REPORT
Kim, Ji-Young ; Kim, Young-Jin ; Kim, Hyun-Jung ; Nam, Soon-Hyeun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 36, issue 3, 2009, Pages 489~497
Occurrence of multiple cysts in jaw bone is rare compared to solitary cysts. numerous cysts occurring in jaw bone which not accompany any syndromes are defined as multiple jaw cysts, and most of these cases in children are keratocystic odontogenic tumor (KCOT) Multiple KCOT occurring in children are often associated with basal cell nevus syndrome(BCNS), so if multiple cysts are found on the radiograph, we suspect this syndrome and pursue clinical and pathological tests. In this case, a pediatric patient, reporting with multiple cysts in the jaw was suspected of BCNS, but hasn't shown any other symptoms of this syndrome up to date, and has kept repeating surgical operation and recurrence of the tumor. Although no symptoms besides multiple jaw cysts is present, it is often reported that other symptoms appear late in the patient's age. Therefore, in cases where multiple odontogenic tumors are found in children, continuous radiographic and clinical follow-ups in order to check the progress of the syndrome is considered important.