http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A ramus cortical bone harvesting technique without bone marrow invasion
Jeong-Kui Ku(Jeong-Kui Ku),Min-Soo Ghim(Min-Soo Ghim),Jung Ho Park(Jung Ho Park),Dae Ho Leem(Dae Ho Leem) 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.2
Autogenous bone grafts from the mandibular ramus are a known source of inadequate bone volume scenarios of the residual alveolar ridge. However, the conventional block-type harvesting technique cannot prevent bone marrow invasion, which can cause postoperative complications such as pain, swelling, and inferior alveolar nerve injury. This study aims to suggest a complication-free harvesting technique and present the results of bone grafting and donor sites. One patient received two dental implants with a complication-free harvesting technique that involves creation of ditching holes with a 1 mm round bur. Sagittal, coronal, and axial osteotomies produced grid-type cortical squares using a micro-saw and a round bur to confirm the cortical thickness. The grid-type cortical bone was harvested from the occlusal aspect, and the harvesting was extended through an additional osteotomy on the exposed and remaining cortical bone to prevent bone marrow invasion. The patient did not suffer postoperative severe pain, swelling, or numbness. After 15 months, the harvested site exhibited new cortical bone lining, and the grafted area had healed to a cortico-cancellous complex with functional loading of the implants. Our technique, grid-type cortical bone harvesting without bone marrow invasion, allowed application of autogenous bone without bone marrow invasion to achieve acceptable bone healing of the dental implants and to regenerate the harvested cortical bone.
Long-term clinical outcomes of single short implants in the mandibular molar area
Jeong-Kui Ku(Jeong-Kui Ku),Young-Kyun Kim(Young-Kyun Kim) 대한치과이식임플란트학회 2023 The Korean Academy of Implant Dentistry Vol.42 No.1
Purpose: This retrospective study evaluated a long-term result of single short implants in the mandibular molar area. Materials and Methods: The patients enrolled in this study had received 7- and 8-mm single short implants between November 2005 and February 2014. The clinical results were analyzed according to the length of implants, including survival and success rates and marginal bone loss. The cumulative survival rates were measured using the Kaplan-Meier survival curves, the success rate was analyzed according to the criteria of Albrektsson, and marginal bone loss was evaluated by the paralleling cone technique. Results: Eighty-one implants and patients (58.4±11.5 years) were analyzed. All mesiodistal cantilevers of prosthetics were within 3 mm. Over an average period of 7.0±2.8 years, the marginal bone loss was 0.5±0.8 mm. Failure occurred for three implant complications at 0.3, 1.2, and 10.2 years after the loading, respectively. The other complications occurred on one implant with screw loosening after two years and another implant with peri-implantitis after 2.2 years. On the other hand, the clinical outcomes of the 7 and 8 mm implants were not significantly different, including marginal bone loss (0.5±1.2 and 0.5±0.6 mm), survival rate (93.8±24.6 and 98.0±14.3%), and 10-year cumulative survival rates (96.4±3.5 and 97.6±20.2%). Conclusions: Single short implants of 7 and 8 mm in length showed reliable clinical outcomes in the posterior mandible.
Jeong-Kui Ku(Jeong-Kui Ku),Sung Hyun Baik(Sung Hyun Baik),Jae-Young Kim(Jae-Young Kim),Jong-Ki Huh(Jong-Ki Huh) 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.2
This study examined the effects of a vertical incision on postoperative edema after third molar extraction. The study design was that of a comparative split-mouth approach. Evaluation was performed via magnetic resonance imaging (MRI). Two patients with homogeneous bilateral impacted mandibular third molars were enrolled. These patients underwent facial MRI within 24 hours after simultaneous extraction surgery. Modified triangular flap and enveloped flap incisions were made. Postoperative edema was evaluated by MRI and was assessed according to anatomical space. The two pairs of homogeneous extractions demonstrated that vertical incisions were associated qualitatively and quantitatively with extensive postoperative edema. The edema associated with these incisions spread toward the buccal space, beyond the buccinator muscle. In conclusion, a vertical incision with mandibular third molar extraction was related to edema in the buccal space and the fascial space, which contributed to clinical facial swelling.
Case series and technical report of nasal floor approach for mesiodens
Ku Jeong-Kui,Jeon Woo-Young,Baek Jin-A 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.4
Objectives: This case series aims to introduce the nasal floor approach for extracting inverted mesiodens. Materials and Methods: Through a retrospective chart review between January 2022 and February 2023, we included the mesiodens patients using nasal floor approach, and analysis the location of mesiodens from the anterior nasal spine (ANS), total operation time, and complications. Results: Each mesiodens was located 10 to 12 mm from the ANS and was covered with a cortical layer of the nasal floor. All mesiodens were successfully extracted without exposing the adjacent incisors or nasopalatine nerve within 30 minutes from draping to postoperative dressing. Conclusion: The nasal floor approach is an efficient extraction method that reduces bone removal and prevents anatomical damage while removing the mesiodens just below the nasal floor bone.
Jeong-Kui Ku,Jeong-Keun Lee,Chul-Gi Min,Yu-Mi Kim,In-Woong Um 대한치과이식임플란트학회 2019 The Korean Academy of Implant Dentistry Vol.38 No.1
Purpose: A moldable autogenous tooth bone graft material (M-AutoBT, Korea Tooth Bank, Seoul, Korea), which is made from demineralized dentin matrix (DDM) powder and hydroxypropylmethyl cellulose (HPMC), is sticky and moldable, making it easy to handle and allowing it to fit into large defects. This case report evaluates the remodeling capacity and long-term stability of moldable demineralized dentin matrix (M-AutoBT) in three sinus-related cases first reported in 2015. Materials and Methods: M-AutoBT, which is made from demineralized dentin matrix (DDM) powder and hydroxypropylmethyl cellulose (HPMC), is a sticky and moldable to fit easily into large defects. Cone-beam computerized tomography was used to evaluate the changes in M-AutoBT around the dental implant in the sinus area from immediately after surgery to the final follow-up (2, 3, and 5 years). Results: In all three cases, regardless of the sinus graft procedure, M-AutoBT showed successful bone formation around the dental implant and maintained its volume and the shape of the cortico-cancellous bone without marginal bone loss during long-term prosthetic loading. Conclusions: HPMC is a base material that contains AutoBT powders and is a moldable and injectable bone substitute material (M-AutoBT) that can fit into a range of defects. M-AutoBT has osteoinductive and osteoconductive capacities. The present study suggests that bone-forming capacity and long term stability of M-AutoBT are similar to the conventional AutoBT, regardless of the characteristics of the defect and the different pathways of the blood supply. Therefore, HPMC powder might be an effective base material for conventional AutoBT powder.
Jeong-Kui Ku,Dae Ho Leem 대한구강악안면외과학회 2019 대한구강악안면외과학회지 Vol.45 No.6
This paper describes a patient with an insufficient vestibular depth for a removable partial denture who underwent vestibuloplasty with a free gingival graft using a titanium mesh in the anterior mandible. Free gingiva was harvested from the palatal mucosa, and a partial thickness flap was elevated at the recipient site. After minimal suturing for the graft, a titanium mesh was fixed over the graft. The mesh was removed four weeks after surgery. The patient obtained an adequate vestibular depth and keratinized gingiva eight weeks after surgery without any complications. In this case, an appropriate vestibular depth and keratinized gingiva were easily obtained by vestibuloplasty using a titanium mesh.
Jeong-Kui Ku,Dae Ho Leem 대한구강악안면외과학회 2020 대한구강악안면외과학회지 Vol.46 No.6
Objectives: The purpose of this paper is to introduce an effective technique to easily obtain adequate amounts of keratinized gingiva and vestibular depth. Materials and Methods: Free gingiva (vertical height 10 mm) was harvested on the palatal mucosa and a partial thickness flap was elevated on the recipient site with same width as the free gingiva graft. After a conventional suture, a titanium mesh covered the graft and was fixed with miniscrews. Titanium mesh was removed 4.1±2.5 weeks after surgery. The amount of keratinized gingiva and vestibular depth was measured at the final follow-up. Results: Nine patients (males 4, females 5; 53.9±14.1 years) who underwent bone graft surgery before vestibuloplasty were included. No free gingival graft failure or complications were encountered in any of the patients. The relapse rate for vestibular depth (23.3%) was lower than that for keratinized gingiva (48.3%) after 34.4±14.4 months (P=0.010). Conclusion: Vestibuloplasty with a free gingival graft using titanium mesh could be achieved with an acceptable amount of keratinized gingiva and an appropriate vestibular depth around dental implant.
Buccal nerve schwannoma mimicking a salivary gland tumor: a rare case report
Jeong-Kui Ku,Dawool Han,Jong-Ki Huh,Jae-Young Kim 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.3
Schwannomas are benign tumors originating from myelinating cells constituting nerve sheaths but rarely contain cellular elements of the nerve. The authors encountered a 47-year-old female patient with a schwannoma on the anterior mandibular ramus arising from the buccal nerve, measuring 3 cm×4 cm. Surgical resection was performed with preservation of the buccal nerve via microsurgical dissection. After one month, the sensory function of the buccal nerve was recovered without complications.