Soft-tissue thickness of South Korean adults with normal facial profiles

차경석 대한치과교정학회 2013 대한치과교정학회지 Vol.43 No.4

Objective: To standardize the facial soft-tissue characteristics of South Korean adults according to gender by measuring the soft-tissue thickness of young men and women with normal facial profiles by using three-dimensional (3D) reconstructed models. Methods: Computed tomographic images of 22 men aged 20 - 27 years and 18 women aged 20 - 26 years with normal facial profiles were obtained. The hard and soft tissues were three-dimensionally reconstructed by using Mimics software. The soft-tissue thickness was measured from the underlying bony surface at bilateral (frontal eminence, supraorbital, suborbital, inferior malar, lateral orbit, zygomatic arch, supraglenoid, gonion, supraM2, occlusal line, and subM2) and midline (supraglabella, glabella, nasion, rhinion, mid-philtrum, supradentale, infradentale, supramentale, mental eminence, and menton) landmarks. Results: The men showed significantly thicker soft tissue at the supraglabella, nasion, rhinion, mid-philtrum, supradentale, and supraglenoid points. In the women, the soft tissue was significantly thicker at the lateral orbit, inferior malar, and gonion points. Conclusions: The soft-tissue thickness in different facial areas varies according to gender. Orthodontists should use a different therapeutic approach for each gender.

전치부 개방교합의 치료 한계

차경석 대한치과의사협회 1995 대한치과의사협회지 Vol.33 No.9

성장기 골격성 III급 부정교합 환자의 상악골 전방 견인 시 하안모 형태에 따른 치료 효과 비교

차경석 대한치과교정학회 2007 대한치과교정학회지 Vol.37 No.4

Ⅳ. Ⅲ급 부정교합 진단 및 치료시 고려사항

차경석 대한치과의사협회 1988 대한치과의사협회지 Vol.26 No.1

정상교합자의 치아석회화과정과 사춘기 성장에 관한 연구

차경석,서정훈 서울大學校 齒科大學 1987 齒大 論文集 Vol.11 No.2

骨格型 Ⅲ級 不正咬合者의 第2 大臼齒 石灰化過程에 關한 硏究

車敬石 대한치과교정학회 1981 대한치과교정학회지 Vol.11 No.2

This investigation was designed to compare the calcification degree of maxillary second permanent molar to mandibular second permanent molar in skeletal Class Ⅲ Malocclusion. The material selected for this study consisted in standand lateral cephalogram study model and orthopantomogram of two hundred fifty seven Korean Children, one hundred twenty one boys and one hundred twenty four girls, aged 6 through 12 years, having skeletal Class Ⅲ Malocclusion. On the basis of findigs of this study, the following results were obtained 1. In the stage of completion of crown, there was no significant difference in calcification degree between maxillary second molar and mandibular second molar of both boys and girls in skeletal Class Ⅲ Malocclusion. 2. From 8 years of age at the stage of beginning root formation to 12 years of age, the calcification degree of mandibular second molar was more advanced than Maxillary second molar of both boys and girls in skeletal Class Ⅲ Malocclusion.

성인교정환자에서의 치주와 교정

차경석 대한치과의사협회 1991 대한치과의사협회지 Vol.29 No.8

Propofol 정맥마취 하에 시행한 경직장 전립선조직생검의 유효성과 안전성

차경석,이승욱,조정만,강정윤,유탁근 대한비뇨의학회 2009 Investigative and Clinical Urology Vol.50 No.8

Purpose: Transrectal ultrasonography (TRUS)-guided prostate biopsy causes fear and pain in 65% to 90% of patients. This study was designed to evaluated the use of intravenous propofol anesthesia during TRUS- guided prostate biopsy. Materials and Methods: Between January 2006 and June 2008, 195 men undergoing a transrectal prostate biopsy were divided into 2 groups according to anesthetic technique. Group A consisted of 99 patients who received intravenous propofol infusion through an 18 gauge needle during TRUS-guided prostate biopsy. Group B consisted of 96 patients who intrarectally received 10 ml of 2% lidocaine gel 10 minutes before TRUS- guided prostate biopsy. Pain scores were assessed on a visual analogue scale immediately after prostate biopsy. Results: The pain score was significantly reduced in group A compared with group B. There was a significant difference in the mean pain score between the 2 groups (1.0±1.3 in group A versus 2.9±2.0 in group B; p< 0.01). Also, there was a significant difference in the willingness to undergo rebiopsy between the 2 groups (83.8% in group A versus 17.7% in group B; p<0.01). However, the complication rates were not significantly different between the 2 groups. Gross hematuria was found in 14% of group A patients and 18% of group B patients. Conclusions: Our results proved the advantage of intravenous propofol anesthesia during TRUS-guided prostate biopsy. Intravenous propofol infusion can be a safe and simple technique that significantly reduces pain during TRUS-guided prostate biopsy. Purpose: Transrectal ultrasonography (TRUS)-guided prostate biopsy causes fear and pain in 65% to 90% of patients. This study was designed to evaluated the use of intravenous propofol anesthesia during TRUS- guided prostate biopsy. Materials and Methods: Between January 2006 and June 2008, 195 men undergoing a transrectal prostate biopsy were divided into 2 groups according to anesthetic technique. Group A consisted of 99 patients who received intravenous propofol infusion through an 18 gauge needle during TRUS-guided prostate biopsy. Group B consisted of 96 patients who intrarectally received 10 ml of 2% lidocaine gel 10 minutes before TRUS- guided prostate biopsy. Pain scores were assessed on a visual analogue scale immediately after prostate biopsy. Results: The pain score was significantly reduced in group A compared with group B. There was a significant difference in the mean pain score between the 2 groups (1.0±1.3 in group A versus 2.9±2.0 in group B; p< 0.01). Also, there was a significant difference in the willingness to undergo rebiopsy between the 2 groups (83.8% in group A versus 17.7% in group B; p<0.01). However, the complication rates were not significantly different between the 2 groups. Gross hematuria was found in 14% of group A patients and 18% of group B patients. Conclusions: Our results proved the advantage of intravenous propofol anesthesia during TRUS-guided prostate biopsy. Intravenous propofol infusion can be a safe and simple technique that significantly reduces pain during TRUS-guided prostate biopsy.

물리적 외력이 배양중인 치주인대세포에 미치는 영향

김현영,차경석 대한치과교정학회 1994 대한치과교정학회지 Vol.24 No.2

The movement of teeth during orthodontic treatment requires bone remodeling process in periodontal tissue. To find out changes occuring in the cell itself, mechanical force was applied to the cultured periodontal ligament cells. Following results were obtained from measuring the changes in cyclic AMP and PGE₂,³H-thymidine incorporation amount in time lapse after application of mechanical force. 1. When mechanical force was applied to cultured PDL cells, the amount of cAMP in cells were increased significantly after 15 min. of force application, but were decreased gradually as time lapsed. 2. When mechanical force was applied to cultured PDL cells, the amount of PGE2 were increased at 20,40,60 min. and was significantly increased at 20 min. 3. When mechanical force was applied to cultured PDL cells, the amount of ³H- thymidine incorporation was some increased, increased, but not statistically significant.

Dental Age측정에 관한 硏究

박순서,차경석 대한치과교정학회 1991 대한치과교정학회지 Vol.21 No.2

Dental maturity is one of the index of physiological maturity indicators. To investigate the relationship between dental maturity and chronological age, the author took the orthopantomograms of 984 students, aged 7 through 17 years, having normal occlusion. The orthopantomograms were examined and calcification degree of each tooth on the left side was rated according to the method described by Demirjian. On the basis of findings of this study, the following results were obtained. 1.The root completion periods of mandibular permanent teeth were as follows: Central Incisor M 8.32±1.03 years F 7.96±1.04 years Lateral Incisor M 9.40±1.30 years F 9.01±0.90 years Canine M 12.81±1.24 years F 11.42±0.94 years 1st Premolar M 12.76±1.74 years F 12.19±1.33 years 2nd Premolar M 13.31±1.88 years F 12.88±1.49 years 1st Molar M 9.60±1.69 years F 9.30±1.16 years 2nd Molar M 14.38±1.73 years F 13.96±1.63 years 2.Sexual differences in same age group at given calcification stage were not significant statistically. 3.The developmental order in mandibular permanent teeth was as follows; a)central incisor, b)lateral incisor, c)1st molar, d)canine and 1st premolar, e)2nd premolar, f)2nd molar.