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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
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Journal DOI :
Korean Academy of Pediatric Dentistry
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Volume & Issues
Volume 11, Issue 1 - Dec 1984
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A STUDY ON THE PREVALENCE OF PROXIMAL CARIES OF DECIDUOUS MOLARS
Kim, Jin-Tae ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 1~6
The author studied the prevalence of proximal dental caries of deciduous molar by observing intraoral radiographies of 478 children aging from 2 to 5 who visited the Dep. of Pedodontics, Seoul National University Hospital. The following results were obtained; 1. The prevalence of proximal caries of deciduous molar did not show significant difference between male and female, right and left side. 2. Mandibular deciduous molar had higher prevalence than maxillary deciduous molar. 3. The prevalence was increased with age. 4. The prevalence was highest in the distal surface of lower 1st deciduous molar and lowest in the distal surface of upper 2nd deciduous molar.
FACIAL GROWTH CHANGE AFTER ORTHODONTIC TREATMENT IN CHILDREN (Second Report)
Sohn, Dong-Su ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 7~12
This study was undertaker to observe the longitudinal change by orthodontic treatment for early Class III malocclusion in primary and mixed dentition. Cephalometric roentgenograms of 8 children with Class III malocclusion obtained during activator therapy were measured and compared with those obtained before activator therapy. The following results were observed. During treatment with activator; 1. The maxilla became retrueded in A,C,E, and K and protruded in F, G, H, and J. 2. The mandible became retruded in A,C,E, and F and F and protruded in H and J. No difference was observed in G and K. 3. Gonial angle became reduced in A,C,E,F, and K and increased in H. No difference was observed in G and J. 4. The steepness of mandibular plane became reduced in C,E,F,G,H, and J and increased in A. No difference was observed in K. 5. The inclination of upper incisor became more labially in A,C,E,G,H,J, and K. No difference was observed in F. 6. The inclination of lower incisor became more lingually in all cases.
THE STUDY OF THE ERUPTION PATTERN OF THE MAXILLARY FIRST PERMANENT MOLAR
Kim, Hyun-Kyu ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 13~24
To Study the eruption pattern of the maxillary first permanent molar, the author took 266 cases of true lateral cephalogram (Male; 137 cases, Female; 129 cases) from 3 to 7 years old children and observed the vertical change and axial change. The following results were obtained: 1. The angle of axial inclination of the maxillary first permanent molar to the F-H plane increased gradually from age 3 to 7, except for age 6 in both sexes. There was a slight reversal of this motion at age 6. 2. The distance from the cusp of the maxillary first permanent molar to the occlusal plane slightly decreased from age 3 to 5, and rapidly decreased from age 5 in both sexes. 3. The change of angle of the axial inclination resulted in the distance from the distobuccal cusp of the maxillary first permanent molar to the occlusal plane decreasing more than that from the mesiobuccal cusp of the maxillary first permanent molar to the occlusal plane in both sexes. 4. The eruption of the maxillary first permanent molar generally was found to be earlier in girls than boys.
STATISTIC STUDY ON ERUPTION TIME OF PERMANENT TEETH IN KOREA
Moon, Je-Won ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 25~39
The author has sought to determine the time and the sequence of permanent teeth eruption in Korean children. The study group consisted of 15,671 healthy children (male 8,015 ; female 7,656) aged 5-13 years old who lived in Seoul or Cheongju. The results were as follows : 1. The eruption times of permanent teeth were 0.45 years earlier in females than in males. 2. The ages corresponding to
of permanent teeth were as follows : In Maxilla 1) central incisor was 7.37 yrs 2) lateral incisor was 8.50 yrs 3) canine was 10.83 yrs 4) 1st premolar was 10.30 yrs 5) 2nd premolar was 11.09 yrs 6) 1st molar was 6.49 yrs 7) 2nd molar was 12.79 yrs In Mandible 1) central incisor was 6.40 yrs 2) lateral incisor was 7.41 yrs 3) canine was 10.18 yrs 4) 1st premolar was 10.26 yrs 5) 2nd premolar was 11.15 yrs 6) 1st molar was 6.32 yrs 7) 2nd molar was 12.05 yrs 3. The eruption sequence of permanent teeth by Z-test was as follow: In Male 1st : Mandibular 1st molar, and Mandibular central incisor 2nd : Maxillary 1st molar 3rd : Maxillary central incisor 4th : Mandibular lateral incisor 5th : Maxillary lateral incisor 6th : Mandibular canine, Maxillary and Mandibular 1st premolar 7th : Maxillary canine 8th : Maxillary and Mandibular 2nd premolar 9th : Mandibular 2nd molar 10th : Maxillary 2nd molar In Female 1st : Mandibular 1st molar, and Mandibular central incisor 2nd : Maxillary 1st molar 3rd : Mandibular lateral incisor, Maxillary central incisor 4th : Maxillary lateral incisor 5th : Mandibular canine, Maxillary and Mandibular 1st premolar 6th : Maxillary canine 7th : Maxillary and Mandibular 2nd premolar 8th : Mandibular 2nd molar 9th : Maxillary 2nd molar 4. The corresponding permanent teeth in the mandible generally erupted earlier than the corresponding permanent teeth in the maxilla by an average of 0.73 years, but the mean eruption time of mandibular 1st premolars was almost the same as those of maxillary 1st premolars, and the mean eruption time of mandibular 2nd premolars was 0.06 years later than those of maxillary 2nd premolars. 5. There is no significant difference between left and right arch in the eruption time and sequence. 6. Generally, the ages of permanent teeth eruption tended to be earlier than those of Dr. Cha's data from 1963.
A STUDY ON THE RANGE OF MANDIBULAR MOVEMENT OF NORMAL AND CLASS III MALOCCLUSION CHILDREN
Jhee, In-Ae ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 41~56
The purpose of this study is to obtain the normal range of mandibular movement for 13 year old boys and girls, and to compare it to the range of mandibular movement of class III patient and normal adult for diagnosis and prognosis of class III malocclusion and TMJ dysfunction. The subjects were 20 normal boys 20 normal girls 22 class III boys and 18 class III girls. The author measured the ranges and shapes of movement of the mandible in the frontal, sagittal and horizontal trajectories using Saphon visitrainer C II (Tokyo Shizaisha Inc.) for the subjects. The results obtained are as follows: 1) The mean for maximum right laterotrusion in the frontal trajectory were 11.96mm in N.B., 11.10mm in N.G., 11.32mm in III. B., 11.24mm in III G. The mean for maximum left laterotrusion were 11.48mm, 11.0mm, 10.91mm, 10.44mm respectively, Area of border movement were 7.16cm in N.B., 6.59cm in N.G., 7.29cm in III. B., 7.50cm in III. G. 2) The mean for maximum protrusion in the sagittal trajectory were 11.7mm in N.B., 11.4mm in N.G.,11.87mm in III B., and 11.02mm in III. G. 3) The mean for maximum protrusion in the horizontal trajectory were 10.20mm in N.B.,10.00 mm in N.G., 9.12mm for III. B. and 9.36mm in III. G. 4) The mean for maximum protrusion of Class III subjects were shorter than those of normal subjects. 5) There was no sexual difference in the range of mandibular movement for 13 year old subjects. N.B; Normal boys N.G.; Normal girls III.B.; Class III boys III. G.; Class III girls.
A SCANNING ELECTRON MICROSCOPIC STUDY OF PREVENTIVE RESIN RESTORATION
Kim, Hye-Sook ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 57~74
The purpose of this descriptive in vitro study were to evaluate the enamel-resin interface of the preventive resin restoration with regard to etching patterns and resin-tag morphology by means of scanning electron microscope. The results were as follows; 1. Three basic etching patterns were appeared simultaneously in a same microscopic section, in concentration between 20-50% phosphoric acid. 2. In 35% orthorhosphoric acid group etched for 60 second, the etching pattern was most prominent and demonstrate closely interdigitated with enamel-resin interface without the evidence of microspace, and the resin tags were longest ranged from 10-15 um in length. 3. This pattern of interface could reduce the incidence of marginal leakage and 2ndary caries formation. 4, The preventive resin restoration could serve as sealing a questionable occlusal surface.
SEROTYPES AND ANTIBIOTIC SUSCEPTIBILITIES OF STREPTOCOCCUS MUTANS ISOLATED FROM DENTAL PLAQUES OF CHILDREN
Baik, Byeong-Ju ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 75~89
A total of 141 strains of Streptococcus mutans were isolated from dental plaques of 153 subjects. Eighty-two children with caries-experience, 18 caries-free children and their mothers were participated. All isolates were examined for their serotypes by immunodiffusion method with 7 reference sera and their antibiotic susceptibilities to 7 antibiotics by agar dilution method using 7 kinds of antibiotics, and were compared their results by caries experience (DMFT ratio) and by intrafamilial levels. 1. Isolation rate of Streptococcus mutans were greater in samples of carious teeth than those of sound teeth, and in mothers than in children. 2. Multiple serotypes of Streptococcus mutans were occasionally found in a single samples. 3. Of the total 141 isolates (83 isolates from children, and 58 from their mothers), type c isolates were most prevalent (63.8%). Type d,e and f were found, comprizing 14.9%, 10.6% and 6.4% respectively. Serotype g, a and untypable strain were also found but far lower frequencies (2.8-0.7%), and type b was detected. 4. These results suggest that there are no significant correlation among the distribution of serotypes, antibiotic susceptibilities, caries experience and intrafamilial relationships. 5. Most of isolates were susceptible to chloramphenicol (100%), penicillin (95.7%), ampicillin (94.3%), and gentamicin (92.2%), but about one-third isolates were resistant to cephaloridine (27%), streptomycin (33.3%) and kanamycin (47.6%), resulting that 91 strains (64.5%) among 141 isolates were resistant to one or more drugs used. 6. Of the 91 resistant strains, 20 different resistant patterns were observed, and the most frequently encountered patterns were KM, SM and CE.
THE INFLUENCE ON THE ERUPTION OF MANDIBULAR 1st PREMOLARS AFTER PREMATURE LOSS OF MANDIBULAR 1st DECIDUOUS MOLARS
Cha, Bong-Ik ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 91~101
The purpose of this study is to determine what influence the lesion and the premature loss of mandibular 1st deciduous molar have on the eruption of its successor, and the author devided 580 cases of orthopantomograms from age 3 to 9 years old children into 3 groups: Control Group: both side normal Study I Group: one normal and the other lesion. Study II Group: one normal and the other premature loss before 8 years old. and observed the amount of differences and the relative position in eruption between study-tooth successor and normal-tooth successor, The following results were obtained: 1. The differences in eruption between right and left mandibular 1st primary molars of Study Group were greater than those of Control Group. 2. The successors of lesioned-teeth showed more accelerated eruption than the antimeres in 40.9% and more delayed, in 22.7%. 3. The successors of premature lost-teeth showed more accelerated eruption than the antimeres in 61.7% and more delayed, in 4.3%.
A STUDY ON THE FACTORS INFLUENCING PRESCHOOL CHILDREN'S RESPONSE AT DENTAL VISIT
Kim, Hyung-Doo ; Cha, Moon-Ho ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 103~112
Eighty children, aged from 2 years 8 months to 5 years 1 month old, were examined to study the relationship between the preschool children's response at dental visit and the influencing factors. The results were as follows: 1, There was no significant relationship between the sexes and the children's response. 2. Children who experienced the painful dental treatment demonstrated significantly more negative dental response. 3. Children who stowed negative dental behavior at last dental visit demonstrated significantly more negative dental response. 4. Children of mothers with high anxiety scores demonstrated significantly more negative dental response. 5, Children who were unpleasant at hospitaization demonstrated significantly more negative dental response. 6. Children who thought they had dental problems demonstrated significantly the most negative dental response. 7. Children who abhorred the medical treatment demonstrated significantly more negative dental response.
A STUDY ON THE TOOTH DEVELOPMENT OF THE KOREAN CHILDREN WITH CLEFT
Yoo, Jae-Hyung ; Sohn, Dong-Su ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 113~120
The author surveyed the tooth development of 50 cleft affected children(M: 34, F:16). The following results were obtained. 1. The difference between the chronologic age and dental age was 0.61 years in the cleft group and 0.15 years in the control group. The delay in tooth development was observed in the cleft group. 2, In the cleft group, there was no difference in the delay of tooth development between the boys and the girls. 3. In the cleft group, there was no difference in the delay of tooth development between the maxilla and the mandible. 4. The delay of tooth development was more severe in the bilateral cleft group than in the unilateral cleft group. 5. In the unilateral cleft, there was no difference in tooth formation between the cleft side and corresponding side.
PREVALENCE AND SEVERITY OF MALOCCLUSION IN CHILDREN 13 TO 15 YEARS OF AGE LIVING IN SEOUL
Song, Kyung-Won ; Kim, Jin-Tae ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 121~130
Childrens between the ages of 13 and 15 years, living in Seoul, were examined in order to determine the prevalence and severity of malocclusion in the permanent dentition. This survey encompassed 981 children and an individual chart was prepared for each subject recording an original HMAR score and classification of occlusion according to Angle. Also, subjective evaluation of "treatment needs" was carried out in 581 children. The results were as follows: 1. Of the 981 children in this survey, 12,1 percent showed excellent occlusion. (0 point) 2. The 14 percent of the children who had a score of 24 and above all appeared to belong to the "treatment highly desirable" or "treatment mandatory" category. 3. The incorporation of SAR (Supplementary Assessment Record) into the HMAR can provide more sensitive method for evaluating severity of malocclusion. 4. According to Angle's classification 77.4 percent of all malocclusion belonged to Class I, 1.3 percent to Class II, Division 1, 0.9 percent to Class II, Division 2, and 11.3 percent to Class III. 5. The mean HMAR score for Class I was significantly lower than for either Class II, Division 1 or Class III. (P < 0.05) 6. A close relationship was found between the degree of "treatment needs" and the value obtained by the HMAR scoring. (chi-square test, p < 0.05) The differences between the mean HMAR scores of the various subjectively defined categories were statistically significant. (P < 0.001)
THE EFFECTS OF IRRADIATION AND HYPERVITAMINOSIS
ON THE ODONTOGENESIS IN THE RAT INCISOR
Park, Jai-Suk ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 131~143
150 rats weighting about 150gm were devided into control group of 80 and experimental group of 70. Control group was subdivided into the irradiated vitamin D injection group and X-ray irradiated group. Experimental group was given 2.0mg ergocalciferol by four intramuscular injection prior to X-ray irradiation with single 800 rads and 1,500 rads respectively. Experimental animals from each group was sacrificed after 1, 3, 7, 14, and 28 days and their incisors were investigated by histopathological examination. The results were as follows; 1. In the irradiated groups, it showed dentin hypoplasia and formation of dentinoid substance caused by degeneration of odontoblast at the early stage. Especially, 1,500 rads group which was severely effected showed formation of osteoid dentin at the apical portion and severe injuries of dental papilla at the first week. 2. In the vitamin D2 administration group, it showed thinned dentin layer at the early stage but, taking time, predentin and dentin layer was thickened. At the fourth week, dentin was chiefly composed of interglobular dentin, especially in the lingual portion. 3. Using in combination of overdose vitamin D2 administration and X-ray irradiation, it effected severely odontoblast, undifferentiated mesenchymal cells around tooth germ and pulp tissue. At the early stage, dentin layer was thinned but, taking time, it was thickened and composed of interglobular dentin caused by calcification of predentin layer. 4. In 800 rads irradiation after the overdose vitamin D2 administration, it showed formation of osteoid dentin in the lingual portion at the first week. In the 1,500 rads irradiation after the overdose vitamin D2 administration, it showed formation of osteoid dentin and degeneration of ameloblast in both buccal and lingual portion at the first week, and enamel hypoplasia caused by edema and loss of polarity of ameloblasts at the second week. 5. By the entire experiment, the overdose vitamin D2 administration and X-ray irradiation effected severely odontoblasts, undifferentiated mesenchymal cells of dental papilla, and primitive cells of tooth germ among the dental tissue. Especially using combination of overdose vitamin D2 administration and X-ray irradiation also effected ameloblasts, resulting in enamel hypoplasia.
STATISTICAL STUDY OF THE DEPTH OF THE GINGIVAL SULCUS IN THE PRIMARY TEETH
Sung, Kwang-Sook ; Lee, Jong-Gap ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 145~150
Author have measured the depth of gingival sulcus of the primary teeth. 333 teeth were selected from the children who attended on the department of pedodontic, College of dentistry, Yonsei University, and kindergarten children at Won Ju city aged from 1 year 8 months to 10 year 2 months. 1998 point were measured. The results were as follows. ; 1. Facial surface was the shallowest in sulcus depth compared with other surfaces. It was 1.56 mm. The depth of sulcus in lingual surface was deeper than facial. 2. The deepest part of each surface was mesial and distal, There were no statistical differences between mesial and distal part of the sulcus depth. 3. The mean sulcus depth of each tooth was as follows. Primary central incisor.....1.71mm. Primary canine....1.75mm. Primary second molar.....2.03mm. 4. The mean sulcus depth of upper was 1.86mm, and the lower was 1.76mg. The upper tooth was deeper than lower in sulcus depth. 5. The lower primary central incisor had the shallowest sulcus and the upper 2nd primary molar had the deepest compared with other tooth. 6. There wasn't specific statistical differences between the age groups of primary dentition and mixed dentition.
AN EXPERIMENTAL STUDY OF THE EFFECT OF FLUORIDE COMPOUNDS ON THE GROWTH OF STREPTOCOCCUS MUTANS
In, In -Sook ; Lee, Jong-Gap ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 151~157
The purpose of this study was to compare the growth-inhibiting effect of sodium fluoride and stannous fluoride on a cariogenic strain of Streptococcus mutans exposed to the different concentration of
and NaF The result were as follows: 1. The growth rate of the Streptococcus mutans was unaffected by 75 ppmF, slowed by 150 ppmF, and immediately arrested by 300 or 600 ppmF where increments of NaF were added to actively growing 12-hour broth culture. 2.
slowed the growth rate at 75 ppmF, was to bactericidal initially at 150 and 300 ppmF, and was to totally bactercidal at 600 ppmF. 3.
has been shown to be more effective than NaF in inhibiting the growth activity of Streptococcus mutans. 4. The inhibitory effect of fluoride compounds on the growth of Streptococcus mutans was increased in the decreased pH at concentration of 600 ppmF.
A STUDY ON THE EFFECTS OF CAVITY FORMS ON FRACTURE OF AMALGAM RESTORATION IN DECIDUOUS MOALRS
Ha, Dae-Song ; Kim, Chong-Kwan ; Lee, Jong-Gap ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 159~167
In this experiments, the fracture loads were measured and analysed by using of Instron universal testing machine (Model 1132). With 80 upper and lower deciduous molars that were free of dental caries. Isthmus of teeth were prepared to 1/3 and 1/4 of intercuspal width, and internal line angles with round and sharp shape, and then amalgam restoration were performed. The results of this study were as follows; 1. Resistance to fracture loads were greater with isthmus of 1/3 intercuspal width than of 1/4 intercuspal width, especially, statistically significant difference on upper and lower second deciduous molars. 2. Resistance to fracture loads were greater with rounded internal line angle than sharp internal line angle. The above results were as follows, the fracture loads had greater resistance on isthmus of 1/3 intercuspal width, and rounded internal line angle, but normal physiological occlusal forces could permit isthmus of 1/4 intercuspal width and rounded internal line angle.
A Histopathological Study of Pulpal Reactions to Dental Varnishes in Dogs' Teeth
Im, Doo-Young ; Lee, Chung-Suk ; Lee, Jong-Gap ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 169~179
The purpose of this study was to observe the effect of dental varnish applied with fluoride to dental pulp by comparing the groups of commercial fluoride product
after 1 Mole sodium fluoride application, Cavity
after 1 Mole sodium fluoride application with the control group not applied the dental varnish. After Cl V Cavity form was prepared on the buccal surface of the crowns with the total 75 teeth by using 5 dogs, average weight of 13.2Kg, dental varnish and silver analgram were placed. This study was performed by 3, 7, 21, 28, 56 days each. The dogs were sacrificed to extract the teeth, cut at the apical one fourth, and prepared histologic examination by fixing with 10% buffered formalin perfusion at sacrifice and decalcification in 10% nitric acid. The specimens were embedded in paraffin, stained with Hematoxylin and Eosin, and serially sectioned with 6
width each. Microscopic evaluation of serial sections at the various time periods among the different groups revealed the following results: 1. In the control group, the marked change of the odontoblastic layer was showed on the 3 days group, and it was decreased gradually. Healing response, such as hyperplasia, was seen on the 28 days group and it was continued to the 56 days group. 2. In the experimental group with Cavity
a slight hemorrhage was seen in the odontoblastic layer on the 3 days group, and the healing response with the hyperplasia of the odontoblast was showed on the 21, 28 days group. It was completely healed on the 56 days group. 3. In the Duraphat R group, a slight hemorrhage showed on the 3 days group and the disarrangement of the Odontoblastic layer was seen on the 7, 21, 28 days group. Odontoblasts showed hyperplasia on the 28 days group, and healed completely on the 56 days group. 4. In the
group, the 7 days group showed remarkable hemorrhage in the odontoblastic layer and stroma, and also it showed reticular degeneration with the disarrangement of the odontoblastic layer and congestion. Each group showed disarrangement. Healing ability of this group was greater than that of the control group, but less than that of the
STATISTICAL STUDY ON DENTAL CARIES INCIDENCES OF INLAND SCHOOL CHILDREN IN CHOONG CHUNG BUK DO OF KOREA
Chung, Tae-Hyoung ; Lee, Jong-Gap ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 181~189
1,840 school children aged 6 to 13 years who live in inland area in CHOONG CHUNG BUK DO were surveyed epidemiologically on the dental caries prevalence. The results were as follows; 1. The prevalence of dental carries was 76.35 percentage in male, 76.15 percentage in female, and 76.25 percentage in both sexes. 2. d.m.f rate was 77.72 percentage in male, 80.07 percentage in female, and 78.86 percentage in both sexes. D.M.F rate was 30.73 percentage in male, 38.52 percentage in female, and 34.51 percentage in both sexes. 3. d.m.f.t. rate and index was 27.94 percentage,2.55T, and d.m.f.s. rate & index was 13.62 percentage, 6.22T. 4. D.M.F.T rate & index in permanent teeth was 4.86 percentage,0.72T, and D.M.F.S. rate & index was 1.20 percentage,0.89T. 5. The filling rate was 3.90 percentage in decidious teeth, 2,00 percentage in permanent teeth.
A ROENTGENOCEPHALOMETRIC STUDY OF SOFT TISSUE PROFILE FOR THE CHILDREN IN THE DECIDUOUS DENTITION
Kim, Dong-Phil ; Kim, Nam-Hong ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 191~213
This study was made on the facial profile of the normal Korean children using the roentgenographic cephalograms. The subjects consisted 51 males and 47 females children of primary dentition with the normal occlusion and acceptable profile. For this study 13 soft tissue profile landmarks were plotted and 14 liner length, 9 soft tissue thickness, 8 vertical height length, 12 angles of soft tissue profile, and 2 vertical proportion were measured. The mean and standard deviations in the subjects were calculated and compared between male and female. The following results were obtained : 1. By the significant test, total facial convexity angle and soft tissue thickness were no significant difference between both sexes. 2. Lower facial height was greater than upper facial height in both sexes. 3. The vertical length of the upper and lower lips were 21.95 mm, 40.74 mm in male and 21.62 mm, 39.63 mm in female. 4. In the relationship of the upper lip and lower lip to the Ricketts' esthetic line, the male was 1.3 mm, 1.18 mm and the female was 1.16 mm, 1.27 mm front of the esthetic line. 5. Compared with the angulation of flush terminal plane group and mesial step group, the mesial step group was greater than the flush terminal plane group except the chin angle.
A STUDY ON THE RELATIONSHIP BETWEEN THE PARENTS' ATTITUDES TOWARD THE DENTAL HEALTH OF THEIR CHILDREN AND THE DENTAL PLAQUE INDEX OF CHILDREN WITH PRIMARY DENTITION
Lim, Kwang-Ho ; Kim, Nam-Hong ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 215~232
The purpose of this research was to analyze the relationship between parents' attitudes toward their children's dental health and dental plaque index. Dental plaque index was obtained through oral examination of 118 children(female 40, male 78) with primary dentition The maintenance status of children's dental health though parents' aids was evaluated by means of questionaire to which 79 persons among the 118 children's parents answered. The results were as follows : 1. In children with primary dentition, toothbrushing together with toothbrushing instruction and continuous reinforcement had decreased plaque accumulation progressively. 2. Dental plaque index before toothbrushing showed that dental plaque was accumulated more in the buccal surfaces of teeth in the maxilla and in the lingual surfaces of teeth in the mandible. It was higher in the posterior teeth than in the anterior teeth and in the maxillary teeth than in the mandibular teeth. 3. Dental plaque index of childern was inversely proportional to the level of education of their parents. 4. Those parents who have much knowledge of oral hygiene were more positive toward their children's oral hygiene.
THE STUDY ON THE CHILD'S COOPERATION IN THE DENTAL PROCEDURE
Lee, Sang-Sook ; Kim, Nam-Hong ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 233~247
The purpose of this study was to find out the child's cooperation in the dental procedure. This study was undertaken in 69 children, 39 in male, and 30 in female, whose ages ranged from 2 to 5 years old. The response of young children and their mother during dental procedure was examined by questionaire and observation. The results were as follows: 1. With continued experience, the child's cooperation was improved, indicating desensitization to dental stress 2. The Higher the mother's educational level was, the higher the behavior of the child was. 3. The mother and child's anxiety were significantly related to the dental behavior of the children, but child's past history and predicted cooperation were not to be related. 4 The child's familiarity and early education were not significantly related to the dental behavior of the children.
CROUZON'S DISEASE: A Case Report
Son, Heung-Kyu ; Kim, Soon-Joo ; Choi, Byung-Jai ; Lee, Myoung-Sook ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 249~254
This is a case report of Crouzon's disease as a kind of craniofacial dysostosis by premature closure of unilateral coronal suture, showed plagiocephalic skull. 5-year-old boy was visited for the treatment of dental caries and oral examination. Physical examination showed hypertelorism, internal strabismus, and saddle nose. Intraoral radiographs showed congenital missing of upper right and left deciduous and permanent lateral incisors. Cephalometric analysis showed shortening the posterior cranial base length, clockwise growth pattern and class III and open bite tendency. Posterior-anterior and submentovertex view showed multiple radiolucencies-digital impression on inner surface of cranial vault. Maxillo-facial and neuro-surgical treatment was required to improvement of facial esthetics and optic complications. Continuous examination was needed to the growth and development.
ECTODERMAL DYSPLASIA: A CASE REPORT
Kim, Soon-Joo ; Son, Heung-Kyu ;
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY, volume 11, issue 1, 1984, Pages 255~259
Ectodermal dysplasia is a rare hereditary abnormality of which the outstanding characteristics are hypodontia, hypohidrosis and hypotricosis. Patient afflicted with this malformation shows a typical face resembling that of congenital-syphilis. Dental abnormality (delayed eruption, oligodontia) becomes apparent in this child and causes the parents to bring him to the dentist. Prosthetic appliances are usually indicated and he must be adjusted or be remade as the child matures.