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Your search keyword '"Jung, Ui-Won' showing total 172 results
Start Over Author "Jung, Ui-Won Publisher korean academy of periodontology
172 results on '"Jung, Ui-Won'

6. Bone formation around rhBMP-2-coated implants in rabbit sinuses with or without absorbable collagen sponge grafting

Author

Baek, Won-Sun, Yoon, So-Ra, Lim, Hyun-Chang, Lee, Jung-Seok, Choi, Seong-Ho, and Jung, Ui-Won

Subjects
Histology, business.industry, Dental implants, Dentistry, Rabbit (nuclear engineering), Bone morphogenetic protein 2, Grafting, Schneiderian Membrane, Bone morphogenetic protein, Microcomputed tomography, Collagen sponge, Periodontics, Medicine, Implant, Collagen, Erratum, Oral Surgery, business, Maxillary sinus floor augmentation, Research Article
Abstract

Purpose The purpose of this study was to evaluate bone formation around recombinant human bone morphogenetic protein (rhBMP-2)-coated implants placed with or without absorbable collagen sponge (ACS) in rabbit maxillary sinuses. Methods The Schneiderian membrane was elevated and an implant was placed in 24 sinuses in 12 rabbits. The space created beneath the elevated membrane was filled with either blood (n=6) or ACS (n=6). In the rabbits in which this space was filled with blood, rhBMP-2-coated and non-coated implants were alternately placed on different sides. The resulting groups were referred to as the BC and BN groups, respectively. The AC and AN groups were produced in ACS-grafted rabbits in the same manner. Radiographic and histomorphometric analyses were performed after eight weeks of healing. Results In micro-computed tomography analysis, the total augmented volume and new bone volume were significantly greater in the ACS-grafted sinuses than in the blood-filled sinuses (P, Graphical Abstract

Published
2015

10. Tissue integration of zirconia and titanium implants with and without buccal dehiscence defects

Author

Lim, Hyun-Chang; https://orcid.org/0000-0001-7695-1708, Jung, Ronald Ernst; https://orcid.org/0000-0003-2055-1320, Hämmerle, Christoph Hans Franz; https://orcid.org/0000-0002-8280-7347, Kim, Myong Ji; https://orcid.org/0000-0001-7254-1883, Paeng, Kyeong-Won; https://orcid.org/0000-0001-7262-7345, Jung, Ui-Won; https://orcid.org/0000-0001-6371-4172, Thoma, Daniel Stefan; https://orcid.org/0000-0002-1764-7447, Lim, Hyun-Chang; https://orcid.org/0000-0001-7695-1708, Jung, Ronald Ernst; https://orcid.org/0000-0003-2055-1320, Hämmerle, Christoph Hans Franz; https://orcid.org/0000-0002-8280-7347, Kim, Myong Ji; https://orcid.org/0000-0001-7254-1883, Paeng, Kyeong-Won; https://orcid.org/0000-0001-7262-7345, Jung, Ui-Won; https://orcid.org/0000-0001-6371-4172, and Thoma, Daniel Stefan; https://orcid.org/0000-0002-1764-7447

Abstract

Purpose The purpose of the present study was to validate an experimental model for assessing tissue integration of titanium and zirconia implants with and without buccal dehiscence defects. Methods In 3 dogs, 5 implants were randomly placed on both sides of the mandibles: 1) Z1: a zirconia implant (modified surface) within the bony housing, 2) Z2: a zirconia implant (standard surface) within the bony housing, 3) T: a titanium implant within the bony housing, 4) Z1_D: a Z1 implant placed with a buccal bone dehiscence defect (3 mm), and 5) T_D: a titanium implant placed with a buccal bone dehiscence defect (3 mm). The healing times were 2 weeks (one side of the mandible) and 6 weeks (the opposite side). Results The dimensions of the peri-implant soft tissue varied depending on the implant and the healing time. The level of the mucosal margin was located more apically at 6 weeks than at 2 weeks in all groups, except group T. The presence of a buccal dehiscence defect did not result in a decrease in the overall soft tissue dimensions between 2 and 6 weeks (4.80±1.31 and 4.3 mm in group Z1_D, and 4.47±1.06 and 4.5±1.37 mm in group T_D, respectively). The bone-to-implant contact (BIC) values were highest in group Z1 at both time points (34.15%±21.23% at 2 weeks, 84.08%±1.33% at 6 weeks). The buccal dehiscence defects in groups Z1_D and T_D showed no further bone loss at 6 weeks compared to 2 weeks. Conclusions The modified surface of Z1 demonstrated higher BIC values than the surface of Z2. There were minimal differences in the mucosal margin between 2 and 6 weeks in the presence of a dehiscence defect. The present model can serve as a useful tool for studying peri-implant dehiscence defects at the hard and soft tissue levels.

Published
2018

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