In-Woo Cho
Dankook University
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Publication
Featured researches published by In-Woo Cho.
Journal of Periodontal & Implant Science | 2017
In-Woo Cho; Jung-Chul Park; Hyun-Seung Shin
Purpose Following tooth extraction, alveolar ridge preservation (ARP) can maintain the dimensions of ridge height and width. Although previous studies have demonstrated the effects of ARP, few if any studies have investigated the compressive force applied during grafting. The aim of this study was to determine the effects of different compressive forces on the graft materials during ARP. Methods After tooth extraction, sockets were filled with deproteinized bovine bone mineral with 10% porcine collagen and covered by a resorbable collagen membrane in a double-layered fashion. The graft materials were compressed using a force of 5 N in the test group (n=12) and a force of 30 N in the control group (n=12). A hidden X suture was performed to secure the graft without primary closure. Cone-beam computed tomography (CBCT) was performed immediately after grafting and 4 months later, just before implant surgery. Tissue samples were retrieved using a trephine bur from the grafted sites during implant surgery for histologic and histomorphometric evaluations. Periotest values (PTVs) were measured to assess the initial stability of the dental implants. Results Four patients dropped out from the control group and 20 patients finished the study. Both groups healed without any complications. The CBCT measurements showed that the ridge volume was comparably preserved vertically and horizontally in both groups (P>0.05). Histomorphometric analysis demonstrated that the ratio of new bone formation was significantly greater in the test group (P<0.05). The PTVs showed no significant differences between the 2 groups (P>0.05). Conclusions The application of a greater compressive force on biomaterials during ARP significantly enhanced new bone formation while preserving the horizontal and vertical dimensions of the alveolar ridge. Further studies are required to identity the optimal compressive force for ARP.
Journal of Periodontal & Implant Science | 2017
Ho-Keun Choi; Hag-Yeon Cho; Sung-Jo Lee; In-Woo Cho; Hyun-Seung Shin; Ki-Tae Koo; Hyun-Chang Lim; Jung-Chul Park
Purpose The aim of this prospective pilot study was to compare alveolar ridge preservation (ARP) procedures with open-healing approach using a single-layer and a double-layer coverage with collagen membranes using radiographic and clinical analyses. Methods Eleven molars from 9 healthy patients requiring extraction of the maxillary or mandibular posterior teeth were included and allocated into 2 groups. After tooth extraction, deproteinized bovine bone mineral mixed with 10% collagen was grafted into the socket and covered either with a double-layer of resorbable non-cross-linked collagen membranes (DL group, n=6) or with a single-layer (SL group, n=5). Primary closure was not obtained. Cone-beam computed tomography images were taken immediately after the ARP procedure and after a healing period of 4 months before implant placement. Radiographic measurements were made of the width and height changes of the alveolar ridge. Results All sites healed without any complications, and dental implants were placed at all operated sites with acceptable initial stability. The measurements showed that the reductions in width at the level 1 mm apical from the alveolar crest (including the bone graft) were −1.7±0.5 mm in the SL group and −1.8±0.4 mm in the DL group, and the horizontal changes in the other areas were also similar in the DL and SL groups. The reductions in height were also comparable between groups. Conclusions Within the limitations of this study, single-layer and double-layer coverage with collagen membranes after ARP failed to show substantial differences in the preservation of horizontal or vertical dimensions or in clinical healing. Thus, both approaches seem to be suitable for open-healing ridge preservation procedures.
Journal of Dental Rehabilitation and Applied Science | 2016
Hyeong-Seok Kim; In-Woo Cho; Hyun-Seung Shin; Jung-Chul Park
Journal of Dental Rehabilitation and Applied Science | 2018
Sung-Jo Lee; Hyun Jang; Hyun-Seung Shin; Jung-Chul Park; Young-Gyun Song; In-Woo Cho
Journal of Dental Rehabilitation and Applied Science | 2018
Sung-Jo Lee; Sae-Young Jung; Hyun-Seung Shin; Jung-Chul Park; Young-Gyun Song; In-Woo Cho
구강회복응용과학지 | 2017
Dae-Young Kang; In-Woo Cho; Hyun-Seung Shin; Hyeong-Sik Ahn; Hyun Jung Kim; Jung-Chul Park
Journal of Korean Society of Dental Hygiene | 2017
Hong-Seok Lee; Sung-Jo Lee; Young-Gyun Song; In-Woo Cho; Jung-Chul Park; Hyun-Seung Shin
Journal of Dental Rehabilitation and Applied Science | 2017
Dae-Young Kang; In-Woo Cho; Hyun-Seung Shin; Hyeong-Sik Ahn; Hyun Jung Kim; Jung-Chul Park
Journal of Dental Rehabilitation and Applied Science | 2017
Seung-Hwan Ong; Sung-Jo Lee; In-Woo Cho; Jung-Chul Park
Journal of Korean Society of Dental Hygiene | 2016
Jiyeon Kim; Young-Jin Kim; In-Woo Cho; Young-Gyun Song; Jung-Chul Park; Hyun-Seung Shin