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RISS 인기검색어
- 검색키워드
- 저자 : 전하룡(Ha-Ryong Jeon) (검색결과 4 건)
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전하룡(Ha-Ryong Jeon),김종원(Jong-Won Kim),홍종락(Jong-Rak Hong),김창수(Chang-Soo Kim) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.4
Purpose The purpose of this study was to evaluate the success rate of dental implant on post-traumatic region to rehabilitate missing teeth Patients and Methods 5 patients who had been treated due to maxillofacial trauma during 2000 to 2004 at samsung medical center were selected for this study. 22 dental implants were installed to them for restoring missing teeth. The success rate of these dental implants was evaluated with criteria by T. Albrektsson .We divided installed 22 implants into 2 categories. One category consisted rough surface implants group and smooth surface implants group. And the other category consisted more healing group and less healing group. The healing time was calculated from point of trauma. Results The success rate of dental implants is 68.2% that is lower than other studies because of poor vascularity of bone bed and mechanical stress according to trauma. Rough surface implants group and More healing group showed superior success rate to others. (P < 0.05) Conclusion We found that to increase success rate, it may need rough surface implants and longer healing period.
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전하룡(Ha-Ryong Jeon),김종원(Jong-Won Kim),권호범(Ho-Beom Kwon),이동환(Dong-Hwan Lee),홍종락(Jong-Rak Hong),김창수(Chang-Soo Kim) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.3
Purpose: This study presents radiographic and laboratory analysis and comparison of bone resorption rate of grafted endochondral bone and intramembranous bone on the aspect of height and volumetric change. Patients and Methods: 18 partially edentulous patients who needed alveolar ridge augmentation for implant placement during the years 2002 to 2004 were selected for this study. Group A consisted of 5 males & 3 females who were treated with intraoral(intramembranous) bone and Group B consisted of 8 males & 2 females who were treated with iliac(endochondral) bone. Non-standard periapical X-ray was taken at day 1, 2 month, 4 months, 8 months after the surgery. Resorption rate of grafted bone were measured on these X-rays and compared. Also we calculated volume of grafted bone with models which was fabricated at 1.5 months, 6 months. Results: There was bone resorption in both groups. Group B showed more bone resorption than Group A. In Group A, the resorption rate according to the radiographic measurements was 9.81 %, and resorption rate according to volumetric measurement was 16.5 %. In group B, the resorption rate according to the radiographic measurements was 15.9 %, and resorption rate according to volumetric measurement was 30.6 %. Significant difference is on radiographic resorption of post-op 2, 4, 8 months on two groups (P < 0.05). Also significant difference is on volume resorption on two groups (P < 0.05) Conclusion: We found that more bone resorption occurred with iliac(endochondral) bone and when we use intraoral bone, that bone can maintain their vitality for alveolar ridge augmentation.
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전치부 개교합 환자의 하악지시상분할골절단술 후 수직적 안정성에 관한 연구
김종원(Jong-Won Kim),전하룡(Ha-Ryong Jeon),홍종락(Jong-Rak Hong) 대한구강악안면외과학회 2005 대한구강악안면외과학회지 Vol.31 No.5
Purpose The purpose of this study was to investigate the vertical stability after BSSRO surgery in skeletal class III malocclusion patients with mild anterior open bite and to present a method to increase the stability. Materials and methods 36 patients, 11 male and 25 female, who received BSSRO surgery with the diagnosis of skeletal class III with anterior open bite at the Department of Oral and Maxillofacial Surgery in Samsung Medical Center, from January 2002 to August 2003, were selected for this study. The patients were between 18 to 45 years of age. Preoperative and postoperative (immediate, 6 months, and 1 year after operation) lateral cephalograms were compared to evaluate the vertical stability by measuring the distance of nasion-menton, mandibular plane angle, and overbite. Results The nasion-menton distance decreased by 1.65mm immediately after the operation in comparison to the preoperative value. This distance further decreased by 0.60 mm at 6 months and 1.06mm at 1 year after the operation. The mandibular plane angle increased after the operation and further increased at 6 months and 1 year. The amount of overbite increased by the operation was 2.34mm and an additional increase of 0.70mm at 6 months and 0.94mm at 1 year were shown. Conclusion Clinically, none of the patients showed relapse of anterior open bite and the vertical stability is highly influenced by orthodontic treatment after the operation. In this study, BSSRO surgery is considered to be a rather reliable procedure that restores stability to skeletal class Ⅲ malocclusion patients with slight anterior open bite.
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김종원(Jong-Won Kim),전하룡(Ha-Ryong Jeon),홍종락(Jong-Rak Hong) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.5
Purpose The aim of this study was to investigate healed bovine bone particles (Bio-Oss) and absorbable collagen sponge (CollaPlug) applied extraction socket site at 4-6 months’post-extraction. Material and methods From August, 2004 to October, 2005, 17 sockets in 5 adult patients were selected out of the patients whose received ridge preservation using bovine bone particles and absorbable collagen sponges at Dept. of oral and maxillofacial surgery in Samsung Medical Center. There were 5 male patients, ages 30 to 58 years. Immediate postoperation and 4-6 months after operation study models were compared to evaluate the ridge dimension by measuring vertical height and horizontal width of alveolar ridge. Results The measurements at 4-6 months revealed, in the ridge dimension, a loss of vertical height of 0.91±0.40mm and horizontal width of 1.25±0.58mm. There was no adverse reaction. Conclusion This study suggests that treatment of extraction sockets with graft materials and collagen sponges is valuable in preserving alveolar bone in extraction sockets and preventing alveolar ridges defects.
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