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위치부정맹출(位置不正萌出)에 관(關)한 상하악골(上下顎骨)의 비교관찰(比較觀察) 증례(症例)
손동수,Sohn, Dong-Su 대한소아치과학회 1981 大韓小兒齒科學會誌 Vol.8 No.1
The author observed a case of ectopic erupted maxillary second premolars and impacted mandibular second premolars due to premature loss of the primary second molars. The treatments were done as follows: 1. In the maxilla, the teeth arrangement problem was corrected with removal of the ectopic erupted second premolars. 2. In the mandible, normal dentition was established with surgical removal of the left second premolar and removal of the permanent first molar in right side combined by orthodontic therapy.
소아(小兒)에 있어 교정전후에 악골의 변화(變化)에 관(關)한 연구
손동수,Sohn, Dong-Su 대한소아치과학회 1983 大韓小兒齒科學會誌 Vol.10 No.1
The author used cephalometric roentgenogram to observe the longitudinal change by orthodontic treatment for early class III malocclusion in primary and mixed dentition. First, the cephalometric roentgenograms were measured and following results were obtained 1. SNA, SNB, ANB, Gonial angle, and SN to mandibular plane were measured as skeletal pattern and $\underline{1}$ to SN. $\overline{1}$ to mandibular plane and interincisal angle were measured as denture pattern. 2. Angular measurements for the Class III malocclusion were compared with those for the normal occlusion of the same Hellman dental age.
孫同銖 大韓小兒齒科學會 1981 大韓小兒齒科學會誌 Vol.8 No.1
The author observed a case of ectopic erupted maxillary second premolars and impacted mandibular second premolars due to premature loss of the primary second molars. The treatments were done as follows: 1. In the maxilla, the teeth arrangement problem was corrected with removal of the ectopic erupted second premolars. 2. In the mandible, normal dentition was established with surgical removal of the left second premolar and removal of the permanent first molar in right side combined by orthodontic therapy.
小兒에 있어 교정전후에 악골의 變化에 關한 연구(2차보고)
손동수 大韓小兒齒科學會 1984 大韓小兒齒科學會誌 Vol.11 No.1
This study was undertaken 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 retrueded 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.
燐酸腐蝕에 依한 乳齒象牙質의 變化 및 複合레진 浸透에 關한 走査電子顯徵鏡的 硏究
金鍾喆,孫同銖 大韓小兒齒科學會 1985 大韓小兒齒科學會誌 Vol.12 No.1
To observe the etching patterns and peneration of composite resin to human deciduous dentin etched with 40% phosphoric acid by scanning electron microscope, etching was performed for 0sec., 30sec., 60sec., 90sec. and 120sec. after preparing class Ⅴ cavities on the lavial surface of 51 extracted deciduous teeth. ㆍThe change of etched dentin surface were observed. ㆍClearfil resin was filled on the etched cavities and the penetration patterns of resin were observed. ㆍClearfil and Hipol resin surfaces after removal of tooth substance were observed. The results were as follows: 1. Clearly visible dentinal tubule openings were seen on the dentin surface etched for 30 sec. Extension of etching time, increased the depth of tubule enlargement. 2. Rare resin tags were seen in the dentin etched for 30 sec. followed by resin filling. Many resin tags were seen in the dentin etched 60 sec., 90 sec., 120 sec. followed by resin filling. 3. Clearfil resin tags had hollow depressions at the ends, but Hipol resin tags shrank at the side and had tapered ends. 4. Proper time of etching deciduous dentin for adhesive resin was 60 sec. 5. Clearfil resin had more favorable properties than Hipol resin in sealing the dentinal tubules.
유재형,손동수 大韓小兒齒科學會 1984 大韓小兒齒科學會誌 Vol.11 No.1
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.
金鎭泰,車文豪,孫同銖,金鍾喆,韓世鉉 大韓小兒齒科學會 1987 大韓小兒齒科學會誌 Vol.14 No.1
The purpose of this study is to analyze the width and length changes of the dental arches during the primary, mixed and early permanent dentition. 1800 stone models of maxillary and mandibular arches obtained from the children aged 3 to 11 years old were under measurement. The results were as follows; Arch widths and lengths differed with age, sex and jaw. 1. Width of dental arches showed increase tendency according to increasing age. 2. Lengths of dental arches remained somewhat stable. 3. The dental arches of males were wider and longer than those of females. 4. Upper arches were wider and longer than lower arches.