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성장기 아동의 수완부 골성숙고 두개 안면골 성장에 관한 두부방사선계측학적 연구
서태휴 大韓小兒齒科學會 1992 大韓小兒齒科學會誌 Vol.19 No.2
The prupose of this study was to investigate the growth patterns of craniofacial areas in association with ossification events of Hand-wrist in growing children. The subjects used in this study were 482 children, ranging from 8 to 16 years of age, with good health, none of them recieved orthodontic treatment. Cophalometric radiographs and Hand-wrist radiographs were used to evaluate the growth of the craniofacial area and the hand-wrist area, and their relationships. Datas were analyzed by SAS statistical program on computer. The results were as follows. 1. The mean chronologic age at skeletal maturation stage 3(pubertal growth onset) was 12.2 years in male and 11.0 year in female, and skeletal maturation stage 4(pubertal growth peak) was 13.9 years in male and 12.4 years in female. The timing of the skeletal maturation stage 4 was synchronous with peak height velosity(PHV) but the skeletal maturation stage 3 occured slightly later than onset of PHV. 2. Increased measurements in accordance with skeletal maturation were anterior cranial base length, posterior cranial base lenght, ramus height, mandibular body length, anterior facial height, posterior facial height, facial length, facial depth, SNA, SNB, facial plane angle, and APDL. In contrast, decreased measurements were upper and lower gonial angle, and mandibular plane angle(SN-GO GN). 3. There was a close correlation between linear growth in craniaofacial area and the skeletal maturity in hand-wrist area but the angular measurements(expect SNA, SNB, ginial angle) and the denture pattern showed low correlation with skeletal maturation of hand-wrist area. 4. The growth rate of cranial area was even but that of mendobular area was in peak synchronous with pubertal growth spurt on hand-wrist area. 5. The timing of each skeletal stage in hand-wrist proceeded forward in girls than in boys but linear measurements of craniofacial area were larger in boys than in girls at each stage of skeletal maturity.
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이난영,서태휴,이상호 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2
Mucocele is clinical term used to describe swelling caused by the pooling of saliva at the site of a severed or obstructed minor salivary gland duct. Two types are recognized: extravasation type is most common and their pathogenesis is related to partial obstruction travasation type is most common and their pathogenesis is related to partial obstruction of the duct. Mucocele may occur in any location where accessary saivary gland tissue is found. However, most frequently, it occur on the lower lip. Clinically, it is painless, spherial, bluish, fluid-filled blister or vesicle. The lesions varies in size from a few millimeters to a centimeter. The preferred treatment is complete excision. If the mucocele is incompletely removed, it has a marked tendency to recur. This case report presents three cases. Two cases was developed on lower lip and the other was on dorsum of the tongue. All cases was extravasation type and treated by surgical excision of the lesion. There was no recurrence during follow up period about 5-12 months.
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외상성 손상과 관련된 상악 측절치 치근형성의 부분 또는 완전정지에 관한 증례보고
김도형,서태휴,이상호 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2
Partial or complete arrest of root formation is a rare complication caused by different factors that affects the permanent tooth during root development. The possible factors affecting this complication have been reported in dentin dysplasia, trauma, transmission of the periapical infection of the primary teeth to permanent tooth germ, radiation therapy, and congenital renal disease. One of these factors, traumatic injury to the primary dentition may cause a deflection or displacement of the permanent tooth bud. And the effects of trauma to Hertwig's epithelial root sheath which is essential to root development are the result of the transmission of the traumatic force through the surrounding bone or through the primary tooth. And it can cause critical damage to the normal root development. These tow cases show 2 children who complained of delayed eruption of permanent incisors, who have had a traumatic history during primary dentition. After clincial examination, because they have no more evidence of root formation of maxially lateral incisors. We extracted the permanent maxially lateral incisors which show partial or complete arrest of root formation. We concluded as follows; 1. These two cases show that one is a complete arrest of root formation when injured at 3 years old, the other is a partial arrest of root formation when injured at 5 years old. So, it is considered that direction and magnitude of traumatic forces and injured stage of permanent tooth bud will affect the root development. 2. It was noticed that there was an arrest or loss of Hertwig's epithelial root sheath in the histologic section of the extracted maxially lat. incisors. 3. After continuous observation, if there is a sign of partial or complete arrest of the root formation, impaction, or delay of the eruption of surrounding teeth after the normal root formation stage, extraction is indicated, and it is considered that orthodontic or prosthodontic treatment is needed.
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