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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 24, Issue 4 - Nov 1997
Volume 24, Issue 3 - Aug 1997
Volume 24, Issue 2 - May 1997
Volume 24, Issue 1 - Feb 1997
Selecting the target year
NON-SYNDROME MULTIPLE SUPERNUMERARY TEETH : A CASE REPORT
Lee, Dong-Hyuck ; Kim, Hyun-Jung ; Nam, Soon-Hyeun ; Kim, Young-Jin ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 487~494
It is rare to find multiple supernumerary teeth in individuals with no other associated diseases or syndromes. 'Non-Syndrome multiple supernumerary teeth' reviewed by Yusof(1990) have more frequency of occurrence in the mandibular region. Especially, mandibular premolar region appears to be the site of predilection for no n-syndrome multiple supernumerary teeth. Also, these may develop after most permanent teeth have erupted, thus their effect upon the occlusion is limited. In this case, the patient had 20 supernumerary teeth without other associated diseases or syndromes. All of the supernumerary teeth were impacted, and thirteen of them were found in the premolar region. In the radiographic and clinical finding, other specific complication resulted from the supernumerary teeth weren't observed.
The effect of various surface coatings on microleakage and microhardness of light-cured glass ionomer restoration
Kim, Gi-Seob ; Kim, Yong-Kee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 495~510
The purpose of this study was to evaluate the efficacy of several surface coating agents in preventing microleakage and increasing microhardness of light-cured glass ionomer restoration. 50 and 25 sound molar teeth were used for the microleakage test and microhardness test respectively. Data were analyzed statistically using Kruskal-Wallis and/or Mann-Whitney test. The results of the present study were as follows: 1. The effect of surface coating in reducing microleakage was proven only at the gingival margin of restorations with statistical significance(p<.05). 2. The distribution of microleakage score at gingival margin was shown to be better than that of occlusal margin in general but with no statistically significant differences(p>.05). 3. No statistically significant differences in microhardness could be found between groups (p>.05) regardless of depth of measurement. 4. Under the present experimental conditions, the types or application of surface coating agents did not impose any significant effect on microhardness of glass ionomer restorative material whereas the protective effect of surface coating in reducing microleakage was partly proven.
Treatment of Tooth Discoloration using Microabrasion Technique : Case Report
Park, Hi-Ryoung ; Kim, Jong-Soo ; Kim, Yong-Kee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 511~517
Tooth discoloration detracts from one's appearance and influences self-image and it is particularly true in children. Therefore, pediatric dentists are required to treat tooth discoloration manifested in children for the normal development of their psycosocial health. Three treatment modalities are currently availabler for the removal of a variety of intrinsic stains from vital teeth. These are enamel microabrasion technique using hydrochloric acid, office bleaching and home bleaching technique with carbamide. Microabrasion technique has several advantages over bleaching in that it is easy to accomplish and does not require multiple office visits or the expensive instruments and the color change seems to be permanent after treatment. The process relies on decalcification, a softening with HCl and then removal of the enamel containing the stain with rubbing. Due to the mechanism of stain removal, this method is indicated for the removal of superficial enamel stains or disc oloration only. We report four successfully treated cases by enamel microabrasion using 15% HCl and pumice. Entire clinical steps are described in detail with some discussions on the outcome.
PULPAL RESPONSE OF ADULT DOGS TO SEVERAL CAPPING MATERIALS : A HISTOLOGICAL STUDY
Song, Ho-Hwan ; Kim, Yong-Kee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 518~536
The purpose of the present study was to analyze the pulpal tissue reactions to several capping materials. 8 adult Mongrel dogs and 4 different capping materials (G I : Calcium hydroxide, G II : Bonding resin, G III : Glass ionomer liner, G IV : Bioactive ceramic) we-reused in the study. The results can be summarized as follows : 1. The formation of hard tissue barrier was observed to begin after 2 weeks in all groups with various forms or positions. 2. According to the result of statistical analysis, G I and G IV showed significantly higher degree of inflammation than G II, G III in 1-week samples(p<.05). And in 2-week samples, G I showed higher degree of inflammation than G II, G IV with statistical significance(p<.05). Howere, these inflammatory reactions have gradually dimiished with time resulting in negligible difference between groups. 3. No bacterial penetration was observed in any group. 4. Hard tissue formation was evident in all groups after 2 weeks regardless of material type in this experiment. Conclusion can be drawn from the above-mentioned results that the perfect marginal sealing after pulp capping procedure is thought to be the most important factor in determining the propgnosis of direct pulp capping.
The sedative effect of intranasal Midazolam additionally administered to children who fail to respond properly to oral Chloral Hydrate
Yoo, Byung-Kyu ; Kim, Jong-Soo ; Kim, Yong-Kee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 537~542
Chloral hydrate is one of the most widely used sedative agents to control the difficult-to-treat young age group in the dental clinic. The normal onset time of oral Chloral hydrate is 30-45 minute with some variations. We are often frustrated see the patient still awake and cry with agitation even after far more than the normal onset time. In such a case, the patient has to be rescheduled for another sedation visit with different agents and/or routes which greatly disappoints the guardians. This case report presents a sedative regimen that can possibly help the clinician complete scheduled treatment without postponement. We have tried additional administration of Midazolam intranasally to 22 patients of those who failed to respond properly to the initial dose(50-75mg/kg) of oral Chloral hydrate. The average age and weight of the patients was 34.2 months(22-61 mos.) and 15.2 kg(10-17 kg) respectively. Half of the regular dose of Midazolam(0.1mg/kg) was administered intranasally. using needless syringe in 42 cases without notable resistance of the patient. The onset was very rapid in most cases and colud proceed the treatment under the constant monitoring by Pulse oximeter. All the planned procedures could be completed in 93.2 % (69.4% of 'Good' plus 23.8% of 'Fair' rating)with only 6.8 %('Poor' rating) of failure rate. Evidence of adverse effect was not detected or reported during and/or after the procedures.
Distalization of the lower first molar using Jones Jig
Lee, Sang-Min ; Kim, Jong-Bum ; Hahn, Se-Hyun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 543~548
The first permanent molar takes important place in the occlusion. Malposition of the lower first molar is frequently due to mesial migration, which is occurred by early exfoliation of the second deciduous molar or proximal caries of deciduous teeth. Above things happen without any consideration of space maintainer, prompt measures for space regaining have to be started. Especially in the case with early loss of the second deciduous molar, it has been said that there is no suitable appliance for maintaining the space before the eruption of the permanent first molar. In distalizing the upper first molar, headgears have been routinely used, which its result was definitely depended on cooperation of the patients. Nowadays, appliances such as pendulum appliances, K-loop, magnets, which can be used without cooperation of the patients, are introduced. Jones Jig, one of the molar distalizing appliances, was used on the patients who visited department of pediatric dentistry in Seoul National University Dental Hospital complaining of no eruption space for the lower second bicuspid. Either removable splint or lingal arch was used as the anchorage. Jones Jig was favorably used in the lower molar, where vestibule is shallow, and this is a case report on the satisfactory result thereof.
A CASE STUDY OF VARIOUS CLINICAL APPLICATION OF THE RUBBER DAM IN PEDIATRIC DENTISTRY
Yi, Soung-Hyuck ; Kim, Jong-Bum ; Jang, Ki-Taeg ; Kim, Chong-Chul ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 549~555
Usage of the rubber dam has been advocated by countless number of dentists. The advantages of the rubber dam such as the following are well-known 1. Moisture control. 2. Improved field of vision. 3. Ease of approach. 4. Soft tissue retraction and Injury prevention. 5. Prevention of aspiration of materials or instruments. 6. Shortened chair time. 7. Induction of nasal breathing during administration of
sedation. Recent reports indicate the rubber dam can protect the dental staffs from the infection when treating HBV or HIV positive patients. Also, improved moisture control and freeing of both hands allowed by the rubber dam makes it very useful when bonding orthodontic brackets. This case study presents the various clinical application of the rubber dam on patients visiting SNUDH dept. of pediatric dentistry to emphasize the importance of its use in pediatric dentistry.
A CASE REPORT ON INTENTIONAL REPLANTATION OF MAXILLARY FIRST BICUSPID
Chung, Woo-Jin ; Kim, Jong-Bum ; Lee, Sang-Hoon ; Hahn, Sae-Hyun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 556~561
Intentional replantation of the posterior teeth has been performed as a last resort except extraction when it is impossible to perform the conventional endodontic or surgical endodontic treatment. Many studies have done with the prognosis, and root resorption, of which the responsibility might have been injury of periodontal ligament and remaining periodontal lesion, proved to be major cause of failure. Intentional replantation, however, can exclude anatomic difficulty, risk of nerve injury, and maxillary sinus trauma that surgical access can raise, especially in posterior teeth, and it is reported that success rate is not less than surgical endodontics, independent of replantation of traumatically avulsed teeth. The success of intentional replantation can be evaluated with, clinically, reduction of pocket depth, pain and mobility(physical mobility), and, radiographically, hard tissue formation, reduction of periapical radiolucency. In this case report, for the maxillary left first bicuspid with dens evaginatus that had periapical lesion, painfulness, mobility and showed no reduction of mobility after even extirpation and a number of irrigation, extraction followed by extraoral root filling with calcium hydroxide and replantation was performed. Based on many studies, it is concluded that hard tissue formation capacity of calcium hydroxide, preceded extirpation before extraction, and careful extraction without injuring periodontal ligament affected successful results of this case.
TRAUMATIC ROOT FRACTURE IN YOUNG PERMANENT TOOTH : THREE CASE REPORTS
Kim, Soo-Yeun ; Choi, Byung-Jai ; Choi, Hyung-Jun ; Sohn, Heung-Kyu ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 562~567
During the eruption of permanent teeth, Traumatic root fractures in young permanent incisors are rare. They occur most commonly in the maxillary central incisors of male patient and are frequently seen in the coronal third of the root. Permanent incisors are very important in terms of esthetics as well as of function, and so conservative treatment is advisable. It is important to maintain vitality of pulp to achieve better result. Location of the fracture line determines the Prognosis. No clinical change were seen in this three case. A case of central incisor with apparent healing of a root fracture without any tratment is presented in this paper. Long term clinical observation is required periodically.
TREATMENT OF INVERTED MAXILLARY INCISORS : CASE REPORT
Kim, Jae-Yun ; Choi, Hyung-Jun ; Lee, Jae-Ho ; Choi, Byung-Jai ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 568~574
Inverted maxillary incisor is a state in which the maxillary incisor rotates to the upward position. The present report provides two examples of correction of inverted maxillary incisors with surgical intervention & orthodontic appliance. Through surgical exposure & direct bonding of lingual button, the central incisor were brought into proper eruption path with elastic traction. The case 1 & 2 were both treated successfully. The results showed the good position of treated teeth and satisfactory esthetics and adequate width of keratinized gingiva were achieved. Careful differential diagnosis procedure is needed in order to avoid dissatisfactory results and the treatment approaches taken in this case report provided an esthetic and functional results.
CASE REPORT FOR TREATMENT OF PERIAPICAL LESION BY USING APICOECTOMY
Lee, Sung-Joon ; Sohn, Heung-Kyu ; Kim, Seong-Oh ; Choi, Hyung-Jun ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 575~580
It has been reported that the operative treatment for the preservation of tooth having periapical lesion has shown over ninety percent of success whereas in the case where calcified canal is severe, canal is perforated, ledge is formed, tooth restored by post and core and cases where symptoms still exist after treatment, endodontic treatment may not all be the solution in attaining a successful treatment. Thus Apicoectomy would generally be used to prevent the loss of tooth having periapical lesion where treatment prognosis is poorly evaluated by endodontic treatment. In case 1 and 2, endodontic treatment was applied due to unilocular radiolucent lesion in periapical area but the symptoms somehow did not show improvement and therefore operated apicoectomy, and as in case 1, favorable results were attained but as in case 2, yet more observation has to be done. The followings are the results we have concluded : 1. In the process of endodontic treatment, absolute canal obturation has great effect on attaining successful treatment. 2. In cases where endodontic treatment is not highly recommended, for example, tooth having dental pulp and periapical lesion, favorable results can be attained by applying apicoectomy.
A Study on the Treatment of Dentally Handicapped Patients under Outpatient General Anesthesia
Lee, Jae-Ho ; Shon, Heung-Kyu ; Kim, Jin-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 581~589
42 dentally handicapped patients who require general dental treatments but behavioral managements had been an obstacle to proper treatments were chosen and the author conducted dental treatment under outpatient general anesthesia. Followings are the conclusions 1. The average time for the treatment procedure was 2 hours and 1 minute and the average of 9.52 teeth were treated for individual patient indicating its high efficiency. 2. The average time for the recovery was 3 hours and 14 minutes and none of the patients showed any specific serious complications. 3. Treatments under outpatient general anesthesia can be a proper patient management method for the dentally handicapped patients if the patient selection is proper.
MANAGEMENT OF ANKYLOSED PRIMARY MOLARS ; CASE REPORT
Jang, Mi-Ra ; Choi, Byung-Jai ; Lee, Jong-Gap ; Lee, Jae-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 590~596
Ankylosis is defined as a fusion of alveolar bone with dentin and/or cementum and may occur at any time during or following active eruption. Ankylosed teeth maintain existing occlusal levels while adjacent teeth continue to erupt via deposition of alveolar bone. This may result in the clinical appearance of depression or submergence of ankylosed teeth below the occlusal plane. It is found more frequently in children of late mixed dentition and in mandibular primary molars. The problems arising from ankylosed teeth, due to their submerged positions, are elongation of the antagonist, tipping of the adjacent teeth, loss of arch length, food impaction and subsequent destruction of periodontal tissue, disturbance of succedaneous tooth eruption. The author observed several cases of ankylosed primary molars and properly managed. Following results were obtained. 1. Severe infraoccluded ankylosis results in loss of arch length and undesirable effect on eruption path of succedaneous tooth, therefore early diagnosis and management are important. 2. The teeth without problems may be examined periodically and restored in order to maintain the normal occlusal function.
A CASE REPORT ON INADEQUATE USE OF LATEX-ELASTIC RING INDUCING PERIODONTAL DAMAGE
Choi, Byung-Jai ; Choi, Won-Kyung ; Lee, Jae-Ho ; Shon, Heung-Kyu ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 597~601
This paper presents improper use of latex-elastic ring in movement of teeth and its consequence. Simple orthodontic movement of teeth including closure of diastema may be achieved by the use of simple method with fixed or removable appliance associated with latex-elastic ring. But, if it is used alone, it acts as a local irritant and then produces localized periodontitis. In case of localized periodontitis resulting from latex-elastic ring, diagnosis is difficult because the patient is usually unaware of the presence of the rings on the roots of the involved teeth and because the ring is not probed and is radiolucent and therefore not discernible radiographically and clinically. Occasionally, surgery is requred for the detection. This case emphasizes the necessity that the use of latex-elastic ring in closing diastema should be accompanied with removable or fixed appliance as well as close professional supervision. Its use without adequate provision for stabilization or retention on the crowns of teeth results in destruction of periodontal support and the teeth may be lost.
A CASE REPORT OF SIALOLITHIASIS IN WHARTON'S DUCT
Lee, Kyung-Ok ; Kim, Dae-Eop ; Lee, Kwang-Hee ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 603~609
Sialolithiasis is the formation of calcific concretions within the ductal system of major or minor salivary glands. The exact nature of sialolith evolution is not known. It may occur at any age but, it is most common in middle-aged adult and rare in childhood. In this paper, a case of sialolithiasis just beneath the mucosa in the anterior portion of the Wharton's duct observed in a 5-year old boy. It was approximately
mm in size and has no clinical symptoms. Under local anesthesia, it was removed by dilatation of orifice of the duct and pressure on the floor of oral cavity by finger.
Differences in caries activity and cariogenic factors in children according to the characteristics of their area of residence
Jung, Eun-Young ; Lee, Kwang-Hee ; Kim, Dae-Eop ; Jung, Young-Suk ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 610~627
The purpose of this study was to compare the caries activity and cariogenic factors in children in different residence areas. The subjects of the study were 268 kindergarten children who were selected from the downtown area(D), apartment area(A), suburban area(S), and rural area(R) in and around the city of Iksan, Korea. Caries activity was measured as past caries experience (dft index and dfs index) and salivary reductase activity (Resazurin Disc Test scores). Cariogenic factors were investigated by a questionnaire. The results were as follows: Reductase activity S > R > D > A dt index R, S > D, A ft index D - the highest dft index A - the lowest ds index R - the highest fs index D - the highest Toothbrushing frequency A - the highest, R - the lowest Toothbrushing before bed D, A > S, R Toothbrushing by parents S, R > A, D Sweets intake freqeuncy A - the highest, S - the lowest Distance to dental office D < A < S < R Dental treatment experience D - the highest, A - the lowest Flouride application rate D > S > R > A Sealant application rate D > A, S > R Birth order A, S > R, D Age D > S > R, A
CASE REPORTS OF SURGICAL EXPOSURE AND ORTHODONTIC TREATMENT OF IMPACTED PERMANENT TEETH
Kim, Chang-Bum ; Yang, Kyu-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 628~636
Impacted or unerupted permanent teeth have many problems in making a diagnosis and treatment plan in dental clinic. There are several methods to treat impacted teeth. The combination of surgical exposure and orthodontic traction is usually the treatment of choice in cases with impacted teeth. Two cases are reported, which were treated with surgical intervention and orthodontic movement. and one case is treated with orthodontic movement alone. To improve esthetic problem and maintain periodontal health, We should avoid loss of attached gingiva in surgical exposure, and excessive orthodontic force during the traction of the impacted tooth.
TREATMENT OF MALOCCLUSION USING REMOVABLE ORTHODONTIC APPLIANCE AND MEAW IN GROWING CHILDREN
Yang, Kyu-Ho ; Choi, Eun-Jong ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 637~649
Early orthodontic treatment in growing children requires the removable orthodontic appliances. The removable orthodontic appliance can be used in the primary dentition and mixed dentition. The purposes of use of removable orthodontic appliance in prmary dentition or mixed dentition are the interception of skeletal or dental malocclusion, guiding the normal dentition, and retention after comprehensive orthodontic treatment. Therefore, it is needed to use the removable orthodontic appliance in children with malocclusion. This report presents cases of growing children with skeletal class II and III malocclusion treated with removable orthodontic appliance during mixed dentition and Multiloop Edgewise Arch Wire(MEAW) during permanent dentition. The results obtained through these cases were summarized as follows : 1. Removable orthodontic appliances guide normal dentition and skeletal growth in growing children. 2. Removable orthodontic appliances play an important role in intercepting malocclusion in mixed dentition before use of fixed orthodontic appliance. 3. MEAW can be applied to finishing stage of all cases and is effective in correction of occlusal plane, achievement of interdigitation, and control of dental inclination. 4. It is needed that removable appliances are used during mixed dentition through correct diagnosis and fixed appliance are used in permanent dentition.
ORTHODONTIC TREATMENT OF MULTIPLE TEETH IMPACTION
Cho, Sa-Hyun ; Kim, Soo-Ji ; Yang, Kyu-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 651~659
This report presents a case of adolescent patient who had multiple impacted teeth and no systemic disease, and was treated with removable and fixed orthodontic appliances. The results obtained through these cases were summarized as follows : 1. Even in the case without systemic disease, there can be the delayed eruption of multiple teeth 2. If the root formation is not completed, root have no excessive curvature, axial inclination of the tooth is not excessive, and there is eruption space, the tooth can be induced to normal occlusion. 3. Since esthetically proper occlusion and dentition was acquired by recovery of the impacted teeth to normal occlusion, the prosthodontic treatment after extraction of the impacted teeth was less needed. 4. This treatment brought psychological stability to pubertal patient who was interested in his facial profile.
Effect of Fluoride and Laser on Artificial Caries-like Lesion Formation in Bovine Enamel
Kim, Jae-Gon ; Baik, Byeong-Ju ; Ju, Hoon ; Yun, Hyun-Du ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 660~677
The purpose of this study was to examine the morphological characteristics and combined effects of fluoride application and laser irradiation on artificial caries-like lesion formation in bovine enamel. Enamel specimens were divided into five experiment group and placed in no-treatment(group C), APF application alone(group F), laser irradiation alone(group L), APF application before laser irradiation (group FL), and APF application after laser irradiation(group LF) on artificial caries-like lesion. Sound enamel was used as a control group. The ultrastructural changes and physical effects of the fluorided and lased enamel has been investigated by using SEM, enamel solubility and microhardness test as well as distributions of calcium, phosphorus and fluoride in internal enamel by using EPMA. The following results were obtained. 1. In the all experiment groups, the amounts of dissolved calcium of enamel surfaces significantly decreased according to increasing exposure time of acid solution than control group(P<0.001). Group L showed higher than that group FL and LF in 30 and 60min(P<0.05). 2. The microhardness values of enamel surface in the control group was highest than that in the other experiment groups. Group F, L, FL and LF were significantly increased than group C(P<0.001). The enamel surface treated with APF produced deposites of numerous small globules and lased enamel showed a cracker-like appearance with microcrack and small pore. Numerous deposits were infiltrated in the fissured portion of enamel treated with APF after laser irradiation. 4. In the case of APF application alone, the elevation of the fluoride profile can be seen within
of the outermost layer and a similar profile observed in the specimen treated with APF before laser irradiation. However, the specimen treated with APF after laser Irradiation showed a large elevation within
of the outermost layer of the enamel. 5. The higher Ca/P ratios were observed in
depth of lased and fluorided enamel when compared to the sound and carious enamel. The fluoride content decreased rapidly with distance from enamel surface, in the group F, fluoride concentration was significantly higher than that in the group C, L, FL, LF and control group according to increasing enamel depth (P<0.05).
A Clinical Study of cysts on Mandible
Baik, Byeong-Ju ; Kim, Mi-Ra ; An, Soo-Hyeon ; Kim, Jae-Gon ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 678~687
Cystic lesions of the mandible are fairly common and usually a presumptive diagnosis is made readily, more often on the basis of roentgenographic appearance than by any other means. Occasionally, however, it is easy to fall into errors of diagnosis which may affect one's choice of treatment. The diagnosis in these situations are usually resolved by the histopathologic examination of material obtained by surgical exploration. The present discussion to the lesions which can be most easily confused in the roentgenographic interpretation, that is, the traumatic bone cyst, the dentigerous cyst, the radicular cyst. These lesions often grow to considerable size before they cause any subjective or objective symptoms. Less frequently, perhaps, the patient presents himself with the complaint of enlargement of the affected part, a discharge, or pain. On rare occasions the first sign is fracture through the cyst cavity. In any case, an adequate roentgenographic survey by means of extraoral films is essential. This is the primary means of diagnosis. The three lesions in mandible, reported here, resembled each other roentgenographically in that they were osteolytic lesions. The follicular and radicular cysts usually have a smooth periphery and may be surrounded by a white line. The follicular cyst, slow-growing lesions, is usually associated with an unerupted tooth. The radicular cyst, the most common type of the odontogenic cyst, is always associated with a nonvital tooth, or it may persist as a "residual" radicular cyst after the causative tooth has been extracted. The traumatic bone cyst can often be differentiated from the first two in that the periphery is less definite and is irregular. It is thought that because it does not occur in older people, the lesion is self-limiting and heals spontaneously if left alone.
The effect of glossopharyngeal nerve transection on the taste buds of the rat vallate papilla
Baik, Byeong-Ju ; Kim, Jae-Gon ; Cha, Kyung ; Rho, Yong-Kwan ; Park, Byung-Keon ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 688~703
The effect of glossopharyngeal nerve transection on the taste buds of the rat vallate papilla was examined by using the method of DNA nick-end labeling (TUNEL) and standard electron microscopic technique at 1, 3, 5, 7, 9 days after denervation. In general, the number and size of taste buds decreased as more days passed after denervation. They started decreasing on day 3 post denervation and virtually all taste buds were disappeared on day 9 post denervation. In studies using TUNEL method, TUNEL postive cells markedly increased in their numbers one day post denervation, as compared with controls. The number of apoptotic taste bud cells per taste bud profile was averaged to be 0.64 and 0.44 for day 1 and 3 post denervation, respectively, whereas it was 0.10 in controls. In electron microscopy, apoptotic cells were identified by the presence of condensed and fragmentary nuclei in a cytoplasm, which resulted in increased density. In control rats, only few apoptotic cells were found. On days 1 and 3 post denervation, nerve fibers almost disappeared from the taste buds and some apoptotic cells were apparent. On days 7 and 9 post denervation, a few taste bud cells were still present in the epithelium of the bottom of the trench wall of the vallate papilla and most of them showed apoptotic changes. The results indicate that the death of taste bud cells in normal conditions is controlled by apoptosis and the decrease and disappearance of taste buds after denervation is also caused by apoptosis of taste bud cells.
DESIGN & DELIVERY OF SPACE MAINTAINERS WHEN PREMATURE EXTRACTION OF PRIMARY MOLAR UNDER GENERAL ANESTHESIA : A CASE REPORT
Kang, Dug-Il ; Jung, Moon-Young ; Lee, Sang-Ho ; Lee, Chang-Seop ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 704~709
Space maintainers needs following extraction of primary molars, due to severe dental caries under general anesthesia. Delivery of conventional space maintainers has three of the disadvantages of the method, there being a impression taking and time consuming due to laboratory procedure, and delivery problem due to relaxed tongue. For this problem improved, modified space maintainer is prefabricated before procedure, and adjust, delivery in operation room, favorable results were obtained. The following results were obtained. 1. Delivery time is very reduced than conventional space maintainers. 2. After space maintainer delivery, follow check-up, without impingement of soft tissue, distortion of wire. After space maintainer delivery, continuous research is required so that space maintainer delivery is applied to usual dental treatment, and it is necessary of long term research.
Autotransplantation of impacted mandibular canine
Hong, Seong-Soo ; Lee, Sang-Ho ; Kim, Dong-Phil ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 24, issue 3, 1997, Pages 710~717
Autotransplantation is the transplantation of embeded, impacted, or unerupted tooth, into extraction socket or surgically prepared socket in the same individual. Clinically, successful autotransplantation must show radiolucent space(periodontal ligament space) between transplanted tooth and supporting bone, lamina dura, no root resorption, no ankylosis, no inflammatory change, and physiologic tooth mobility. It is important that procedure is atraumatic, and the instruments should not contact the root surface during procedure. We performed autotransplantation of impacted mandibular canine that transversely located beneath the apices of the mandibular incisors with uncompletely developed apex. In radiographs and clinical evaluation, this transplant showed successful clinical finding except irregularity of mesial root surface after 14 months. It is conclued that transplantation of canine with
root development provides a good chance of pulp survival, limited risk of root resorption and ensures sufficient final length, and is thus recommended.