Publications by authors named "Jae-Suk Rim"

6 Publications

  • Page 1 of 1

Microcomputed Tomography and Histological Study of Bone Regeneration Using Tooth Biomaterial with BMP-2 in Rabbit Calvarial Defects.

Scanning 2021 10;2021:6690221. Epub 2021 May 10.

Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Korea University Guro Hospital, Seoul 08308, Republic of Korea.

Our study was aimed to analyze the osteoinductive effect of powdered and block type autogenous bone graft along with bone morphogenetic protein (BMP-2) as compared to synthetic bone graft. Three circular bicortical defects were made in the calvaria of each rabbit and randomly divided into three groups as follows: powdered tooth biomaterial+BMP-2, block tooth biomaterial+BMP-2, and control group: synthetic bone+BMP-2. The samples taken from these defects after 4 and 8 weeks were analyzed histologically along with micro CT analysis. In our study, both powered and block type tooth autogenous bone graft successfully stimulated mesenchymal cells leading to endochondral ossification and bone regeneration. We observed that the powered bone graft material which is acid insoluble especially is preferable as a carrier for BMP-2.
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http://dx.doi.org/10.1155/2021/6690221DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8131161PMC
May 2021

Micro-CT and Histomorphometric Study of Bone Regeneration Effect with Autogenous Tooth Biomaterial Enriched with Platelet-Rich Fibrin in an Animal Model.

Scanning 2021 11;2021:6656791. Epub 2021 May 11.

Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Korea University, Seoul 08308, Republic of Korea.

The aim of this study was to evaluate the potential of tooth biomaterials as bone graft biomaterials for bone healing in rabbits. We prepared tooth biomaterial and platelet-rich fibrin (PRF) to fill the round-shaped defect in the skull of New Zealand white rabbits. These cranial defects were treated with different conditions as follows: group 1, a mixture of tooth biomaterials and platelet-rich fibrin (PRF); group 2, only tooth biomaterials; group 3, only PRF; and group 4, the unfilled control group. Specimens of the filled sites were harvested for analysis with microscopic computerized tomography (micro-CT) and histomorphology at 4 and 8 weeks. As a result of micro-CT, at 4 weeks, the bone volume percentages in groups 1 and 2 were 50.33 ± 6.35 and 57.74 ± 3.13, respectively, and that in the unfilled control group was 42.20 ± 10.53 ( = 0.001). At 8 weeks, the bone volume percentages in groups 1 and 2 were 53.73 ± 9.60 and 54.56 ± 8.44, respectively, and that in the unfilled control group was 37.86 ± 7.66 ( = 0.002). The difference between the experimental group 3 and the unfilled control group was not statistically significant. Histomorphologically, the total new bone was statistically different.
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http://dx.doi.org/10.1155/2021/6656791DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8133871PMC
May 2021

Illnesses Encountered During Medical Volunteering in Takeo Province, Cambodia.

Medicina (Kaunas) 2020 Jan 10;56(1). Epub 2020 Jan 10.

Department of Radiation Oncology, Korea University Ansan Hospital, Gyeonggido 15355, Korea.

: Medical volunteering seeks to meet the clinical needs of underserved areas, but has been criticized for difficulties in addressing local health issues and resultant lack of sustainability. Our team has visited rural Cambodia annually since 2012. This study reports the illnesses encountered during the recent mission and share our experiences to improve the efficiency of medical volunteering. Infrastructure, such as public electricity or water, was unavailable, hence most medical care and records were hand-performed. We categorized (1) primary diagnoses (chief complaints) by duration of symptoms, and (2) primary and secondary diagnoses (illnesses that were not related to the chief complaint) by severity of illness since patients commonly reported multiple symptoms. Blood pressure and anthropometric values were also checked and analyzed. We encountered 317 adult and 141 pediatric patients. Among adults, 61.3% had persistent chronic (>6 month) symptoms of their chief complaints. The commonest diagnoses of chronic symptoms were musculoarthritis (31.5%) and gastroesophageal reflux disease and/or gastritis (21.7%). Hypertension and/or cardiac problems were relatively common among males (13.6%). The most common diagnosis among the severest cases (specialized or intensive care recommended) was cardiac problems (14.8%), often with abnormalities in sonography or electrocardiogram. For children, the overwhelming majority of diagnoses were related to acute symptoms and low severity, and approximately half were cases of the common cold. Commonly prescribed drugs were antacids or mucosal protectors (31.3%), Non-steroidal anti-inflammatory drugs (NSAIDs) or other painkillers (27.6%), and antiparasites (17.7%) in adults, and NSAIDs (44.7%) and antiparasites (23.2%) in children. Among adults, 32.7% were diagnosed with hypertension, and body mass index ( = 0.003) and age ( < 0.001) were both correlated with hypertension and its grade. Our study offers practical help to volunteer health workers planning to visit Southeast Asia.
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http://dx.doi.org/10.3390/medicina56010030DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7023312PMC
January 2020

Common Illnesses in Tropical Asia and Significance of Medical Volunteering.

Open Med (Wars) 2018 30;13:285-293. Epub 2018 Jul 30.

Department of Oral & Maxillofacial Surgery, Guro Hospital, 148 Gurodong-ro, Guro 2-dong, Guro-gu, Seoul, 08308, Republic of Korea.

This study was conducted to provide practical information for actual preparation of medical volunteering in tropical Asia, mainly the distribution of common illnesses encountered during mission. From 2012 to 2017, we visited two rural areas of Eastern Cambodia for medical volunteering missions, Cham Lak and Khsoem. Neither area has electricity or public water. We classified the common cases encountered during missions into six groups (upper respiratory infection, gastroenteritis, vaginitis and/or cystitis, dermatitis, work-related pain and parasite prevention) and assessed the distribution. In Cham Lak and Khsoem, 558 and 371 people were treated, respectively. The most commonly encountered cases in children under age of 18 were upper respiratory infection, followed by parasite control and dermatitis, in both areas. There was no significant difference in distribution between the two areas. For adults, the most common illnesses in Cham Lak area were vaginitis and/or cystitis, followed by gastroenteritis and work-related pain. In Khsoem area, the common illnesses were work-related pain followed by gastroenteritis, and upper respiratory infection. The distribution between the two areas differed significantly (p <0.001). The difference might be due to the water source and main crops of agriculture. Successful preparation of a medical volunteering needs deep understanding of the destination community.
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http://dx.doi.org/10.1515/med-2018-0044DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6077925PMC
July 2018

Altered sensation caused by peri-implantitis: a case report.

Oral Surg Oral Med Oral Pathol Oral Radiol 2013 Jul 29;116(1):e9-13. Epub 2012 Jun 29.

Advanced Prosthodontics, Graduate School of Clinical Dentistry, Institute for Clinical Dental Research, KUMC, Korea University, Seoul, Korea.

Frequently reported is a case wherein a lesion caused by periodontitis or periapical lesion in a natural tooth enlarged, invaded the inferior alveolar nerve canal, and induced paresthesia. Cases wherein paresthesia occurred because of peri-implantitis have been rarely reported. The patient in this case report had experienced transient paresthesia after implant placement and recovered normal sensation 3 months later. Thirteen years later, this patient visited the authors' hospital with paresthesia in the same region because the peri-implantitis progressed to the apex of the implant. One week after removal of the implant, sense recovery and pain relief started, and 15 days after removal, the paresthesia and pain completely disappeared. For patients who experience transient paresthesia and recovery owing to nerve damage caused by the placement of an implant in the mandibular molar or premolar area, or in patients in whom the implant is close to the inferior alveolar nerve canal or the mental nerve, the spread of inflammation caused by peri-implantitis can induce paresthesia.
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http://dx.doi.org/10.1016/j.oooo.2011.10.042DOI Listing
July 2013

Comparison of implant stability after different implant surface treatments in dog bone.

J Appl Oral Sci 2010 Jul-Aug;18(4):415-20

Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University, Seoul, Korea.

Objectives: The purpose of this investigation was to evaluate the effects of different implant surface treatments on implant stability in dog mandibles.

Material And Methods: A total of 30 implants (Dentium Co, Seoul, Korea) were placed in 5 dog mandibles. Bone quality was assessed at each site. Implant stability was evaluated using 2 different methods. An Osstell resonance frequency analyzer (RFA) was used to determine the stability at baseline (day 1), and 3, 6 and 10 weeks after surgery. Animals were euthanized 10 weeks after implant installation. Specimens were obtained and submitted to the laboratory processing. Sections were stained with hematoxylin and eosin for histologic and histomorphometric analyses. All implantation sites in dog mandibles demonstrated bone types II and III.

Results And Conclusions: All implants showed good primary stability at baseline in terms of insertion torque. The results of this study suggest that surface treatment may have significant effects on biological stability 3 weeks after implant placement. Further studies are needed to confirm these initial observations in poor quality bone.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5349075PMC
http://dx.doi.org/10.1590/s1678-77572010000400016DOI Listing
December 2010
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