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Implant Surgery for Fixed Implant-supported Prostheses in the Edentulous Mandible: A Case Report
지영덕 대한구강악안면임플란트학회 2021 대한구강악안면임프란트학회지 Vol.25 No.2
Edentulism following extraction of existing teeth due to dental caries, severe periodontal disease, or surgical damage can be treated with implants using complete dentures, implant-supported overdentures, or fixed implant-supported prostheses. Fixed implant-supported prostheses have higher masticatory efficiency than removable prostheses and may provide patients with psychological stability. Moreover, when compared with traditional removable complete dentures, fixed implantsupported prostheses have better stability and retention, help improve the mental health of the patients, and provide them with opportunities to respond more actively to the society. In this report, patients preferred fixed implant-supported prostheses, which were advantageous in terms of masticatory efficiency, patient satisfaction, and distribution of stress compared to removable prostheses. Thus, they were considered the first priority. In case 1, a fixed implant-supported prosthesis was fabricated by placing 12 implants in a patient with edentulous mandible who was using a mandibular complete denture, but complained of denture displacement and masticatory dysfunction. In case 2, a fixed implant-supported prosthesis was fabricated by placing eight implants in a patient with an edentulous mandible whose entire mandibular dentition had been extracted due to severe periodontitis. Satisfactory functional and esthetic outcomes were achieved with fabrication and placement of fixed implant-supported prostheses in these patients.
악안면 보철의 임상적 고찰 : 골내 매식술을 통한 보철적 회복에 관하여
민승기 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5
In recent decade, there has been a very rapid development in technical possibilities to provide patients with maxillofacial prostheses. Dr. Brenemark first introduced possibility of use of maxillofacial interosseous implant in patients with ablative tumor surgery in 1979. He did introduce the new type of maxillofacial implants system which widen the fixture flange on top of the bone. The advantages of fixed prostheses with implants were well known to various ways, easy to attach, keep clean prostheses, and not to disturb recipient bed. But there are some problems to install implants on maxillofacial regions, because mostly facial bone has very thin cortical bone and poor bone quality. It needs more retention between implant and bone which overcome that fault with fixture flange. To make maxillofacial prostheses, it should be understood general procedure of maxillofacial laboratory work. Ear and midface maxillofacial fabrication which include nose and eye defects will be described step by step.
이자영,정창모,허중보,이소현,윤미정 대한구강악안면임플란트학회 2022 대한구강악안면임프란트학회지 Vol.26 No.4
In fixed implant prostheses, splinted one-piece superstructures have definite advantages over segmented superstructures in terms of less marginal bone loss around the implants and long-term success rates. However, owing to jaw, the presence of discomfort in jaw opening muscles must be checked before proceeding with a one-piece superstructure. The patient in this case had all his teeth extracted and used provisional dentures for three months to evaluate the newly established vertical dimension. For fixed implant prostheses, implants were splinted together in the form of a fixed full-arch bridge in both the maxilla and the mandible. While using provisional implant restoration, the vertical dimension and occlusal plane were evaluated, and the patient was satisfied with the occlusion, function, and esthetics. For definitive prostheses, a metal framework was fabricated in one piece that lasted until now, and upon periodic patient recall, a satisfying result, in terms of function and esthetics, followed.
Special issue of biomedical engineering letters on advances in intelligent prostheses
Liming Salvino,Wing Kong Chiu,Jerome Lynch,Kenneth J. Loh 대한의용생체공학회 2020 Biomedical Engineering Letters (BMEL) Vol.10 No.1
This Special Issue comprises original and review papersfrom engineering and medical professionals expounding onthe state of the art in engineering and the physical sciencesthat aim to enhance the performance of prosthetic devicesincluding socket prostheses and osseointegrated prostheses. Advances in physical science disciplines are poised torevolutionize how doctors and patients view and use prostheses. With monitoring and control capabilities, advancedprostheses can provide functionalities far beyond simplelimb extension and load support. Prostheses with built-insensing, embedded intelligence such as real-time monitoringand infection eradication, self-actuation, and control havebeen quickly advancing over the past 10 years or so. Giventhe rapid emergence of these transformative developments,this Special Collection is designed to collate a volume ofwork devoted to cutting-edge developments in advancesin intelligent prostheses that enhance medical care and thequality of life of patients with limb loss. Additionally, theseprosthetic functionalities and technologies may be utilized as“special wearables” to collect and mine human physiologicaldata in order to gain knowledge in fundamental scienceson neurological and biomechanical eff ects of injury andrehabilitation.
Review Article : Current impression materials for removable prostheses
( Tae Kim ),( Peter Stone ) 조선대학교 구강생물학연구소 2011 Oral Biology Research (Oral Biol Res) Vol.35 No.1
This review article describes materials used in making definitive impressions for the fabrication of removable prostheses. Modern materials will be described, so readers can consider the benefits of incorporating them into their removable prosthetics procedures. The accuracy of final restorations depends greatly on the impression material and clinical technique. Materials used without adequate knowledge of their characteristics can impair successful outcomes. Recent advances in impression materials result in predictable, accurate impressions for construction of removable prostheses.
A 16-channel Neural Stimulator IC with DAC Sharing Scheme for Artificial Retinal Prostheses
Changho Seok,Hyunho Kim,Seunghyun Im,Haryong Song,Kyomook Lim,Yong-Sook Goo,Kyo-in Koo,Dong-il Cho,Hyoungho Ko 대한전자공학회 2014 Journal of semiconductor technology and science Vol.14 No.5
The neural stimulators have been employed to the visual prostheses system based on the functional electrical stimulation (FES). Due to the size limitation of the implantable device, the smaller area of the unit current driver pixel is highly desired for higher resolution current stimulation system. This paper presents a 16-channel compact current-mode neural stimulator IC with digital to analog converter (DAC) sharing scheme for artificial retinal prostheses. The individual pixel circuits in the stimulator IC share a single 6 bit DAC using the sample-and-hold scheme. The DAC sharing scheme enables the simultaneous stimulation on multiple active pixels with a single DAC while maintaining small size and low power. The layout size of the stimulator circuit with the DAC sharing scheme is reduced to be 51.98 %, compared to the conventional scheme. The stimulator IC is designed using standard 0.18 μm 1P6M process. The chip size except the I/O cells is 437 μm × 501 μm.
A 16-channel Neural Stimulator IC with DAC Sharing Scheme for Artificial Retinal Prostheses
석창호,김현호,임승현,송하룡,임교묵,구용숙,구교인,조동일,고형호 대한전자공학회 2014 Journal of semiconductor technology and science Vol.14 No.5
The neural stimulators have been employed to the visual prostheses system based on the functional electrical stimulation (FES). Due to the size limitation of the implantable device, the smaller area of the unit current driver pixel is highly desired for higher resolution current stimulation system. This paper presents a 16-channel compact current-mode neural stimulator IC with digital to analog converter (DAC) sharing scheme for artificial retinal prostheses. The individual pixel circuits in the stimulator IC share a single 6 bit DAC using the sample-and-hold scheme. The DAC sharing scheme enables the simultaneous stimulation on multiple active pixels with a single DAC while maintaining small size and low power. The layout size of the stimulator circuit with the DAC sharing scheme is reduced to be 51.98 %, compared to the conventional scheme. The stimulator IC is designed using standard 0.18 μm 1P6M process. The chip size except the I/O cells is 437 μm 501 μm.
A 16-channel Neural Stimulator IC with DAC Sharing Scheme for Artificial Retinal Prostheses
Seok, Changho,Kim, Hyunho,Im, Seunghyun,Song, Haryong,Lim, Kyomook,Goo, Yong-Sook,Koo, Kyo-In,Cho, Dong-Il,Ko, Hyoungho The Institute of Electronics and Information Engin 2014 Journal of semiconductor technology and science Vol.14 No.5
The neural stimulators have been employed to the visual prostheses system based on the functional electrical stimulation (FES). Due to the size limitation of the implantable device, the smaller area of the unit current driver pixel is highly desired for higher resolution current stimulation system. This paper presents a 16-channel compact current-mode neural stimulator IC with digital to analog converter (DAC) sharing scheme for artificial retinal prostheses. The individual pixel circuits in the stimulator IC share a single 6 bit DAC using the sample-and-hold scheme. The DAC sharing scheme enables the simultaneous stimulation on multiple active pixels with a single DAC while maintaining small size and low power. The layout size of the stimulator circuit with the DAC sharing scheme is reduced to be 51.98 %, compared to the conventional scheme. The stimulator IC is designed using standard $0.18{\mu}m$ 1P6M process. The chip size except the I/O cells is $437{\mu}m{\times}501{\mu}m$.
Rhee, Seung-Hyun,Baek, Seung-Hak,Park, Sang-Hun,Kim, Jong-Cheol,Jeong, Chun-Gi,Choi, Jin-Young Korean Association of Maxillofacial Plastic and Re 2019 Maxillofacial Plastic Reconstructive Surgery Vol.41 No.-
Backgrounds: The purpose of this study is to discuss the total joint reconstruction surgery for a patient with recurrent ankylosis in bilateral temporomandibular joints (TMJs) using three-dimensional (3D) virtual surgical planning, computer-aided manufacturing (CAD/CAM)-fabricated surgical guides, and stock TMJ prostheses. Case presentation: A 66-year-old female patient, who had a history of multiple TMJ surgeries, complained of severe difficulty in eating and trismus. The 3D virtual surgery was performed with a virtual surgery software (FACEGIDE, MegaGen implant, Daegu, South Korea). After confirmation of the location of the upper margin for resection of the root of the zygoma and the lower margin for resection of the ankylosed condyle, and the position of the fossa and condyle components of stock TMJ prosthesis (Biomet, Jacksonville, FL, USA), the surgical guides were fabricated with CAD/CAM technology. Under general anesthesia, osteotomy and placement of the stock TMJ prosthesis (Biomet) were carried out according to the surgical planning. At 2 months after the operation, the patient was able to open her mouth up to 30 mm without complication. Conclusion: For a patient who has recurrent ankylosis in bilateral TMJs, total joint reconstruction surgery using 3D virtual surgical planning, CAD/CAM-fabricated surgical guides, and stock TMJ prostheses may be an effective surgical treatment option.