• The Journal of Korean Academy of Prosthodontics
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• v.53 no.3
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• pp.228-233
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• 2015

Loss of teeth may not only imply impaired oral function and loss of alveolar bone but is also often accompanied by reduced self-confidence. This results in a larger problem with the fully edentulous patient. The patient introduced in this study showed multiple missing teeth and mobility of remaining teeth and wanted to have fixed dental prosthesis using implants. Remaining teeth were extracted because of periodontally bad prognosis. This article reports a satisfactory clinical and esthetic outcome of full mouth rehabilitation using implant hybrid prosthesis in fully edentulous patient.

• The Journal of the Korean dental association
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• v.54 no.9
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• pp.692-702
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• 2016

A short dental implant is considered as possible solution in difficult clinical situations for the placement of a regular length implant. Using a short implant avoiding more invasive surgical procedures simplifies the treatment plan and shortenes the duration of treatment. In this case, 71-year-old female came up with discomfort from her old mandibular denture. As she had fully edentulous mandible and got a negative feedback from removable denture, implant-supported fixed prosthesis was planned. Six short implants were placed on her mandible with severe alveolar bone loss. After 1 year follow up period, implants were well retained with any other abnormal findings. The patient was satisfied with her prostheses and satisfactory outcomes were attained in terms of both esthetic and functional clinical results.

• 대한치과보철학회:학술대회논문집
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• 1992.05a
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• pp.19-20
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• 1992

• Imaging Science in Dentistry
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• v.53 no.1
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• pp.21-26
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• 2023

Purpose: A fully digital approach to oral prosthodontic rehabilitation requires the possibility of combining (i.e., registering) digital documentation from different sources. This becomes more complex in an edentulous jaw, as fixed dental markers to perform reliable registration are lacking. This validation study aimed to evaluate the reproducibility of 1) intraoral scanning and 2) soft tissue-based registration of an intraoral scan with a cone-beam computed tomography (CBCT) scan for a fully edentulous upper jaw. Materials and Methods: Two observers independently performed intraoral scans of the upper jaw in 14 fully edentulous patients. The palatal vault of both surface models was aligned, and the inter-observer variability was assessed by calculating the mean inter-surface distance at the level of the alveolar crest. Additionally, a CBCT scan of all patients was obtained and a soft tissue surface model was generated using patient-specific gray values. This CBCT soft tissue model was registered with the intraoral scans of both observers, and the intraclass correlation coefficient(ICC) was calculated to evaluate the reproducibility of the registration method. Results: The mean inter-observer deviation when performing an intraoral scan of the fully edentulous upper jaw was 0.10±0.09 mm. The inter-observer agreement for the soft tissue-based registration method was excellent(ICC=0.94; 95% confidence interval, 0.81-0.98). Conclusion: Even when teeth are lacking, intraoral scanning of the jaw and soft tissue-based registration of an intraoral scan with a CBCT scan can be performed with a high degree of precision.

• The Journal of Korean Academy of Prosthodontics
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• v.31 no.3
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• pp.411-422
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• 1993

Osseointegrated dental implants are now an accepted part of the prosthetic treatment of fully and partially edentulous patients. Clinical studies have shown that osseointegrated dental implants may successfully be used as abutments for prosthetic rehabilitations, and that the supporting tissue can be kept in a stable and healthy clinical state for prolonged periods of time. The purpose of this study was to look for differences in the distribution in the bacterial morphotypes around natural teeth and osseointegrated dental implants. The subgingival plaque around natural teeth and implants was analysed by means of differential phase-contrast microscopy. In addition, clinical indices used to analyse natural teeth condition were used to compare the condition of natural teeth and implants. The results were as follows : 1. In implants of partially edentulous patients, the plaque index, sulcus bleeding index(P<0.05), pocket depth(P<0.01) were greater than natural teeth. 2. Gingival crevicular fluid volume was not significantly different between natural teeth and implants. 3. In implants of fully edentulous patients, the plaque index was greater than natural teeth(P<0.01) and implants of partially edentulous patients(P<0.05), but sulcus bleeding index was not significantly different. 4. In partially edentulous patient, coccoid cell proportion was greater in implants than natural teeth (P<0.05). 5. In implants of fully edentulous patients, coccid cell proportion was even greater than implants of partially edentulous patients(P<0.05) and natural teeth(P<0.01). 6. Among three groups, the proportions of non-motile rods, motile rods, spirochetes and others were not significantly different. 7. The proportion of motile bacteria was not significantly different among three group.

• The Journal of Korean Academy of Prosthodontics
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• v.53 no.2
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• pp.157-166
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• 2015

This article describes how to use CBCT and an intraoral scanner in a fully edentulous case that enables the clinician to place implants with flapless guided surgery and to engage prefabricated, customized implant abutments at the time of implant surgery, with only 1 clinical consultation before implant surgery. The patient's existing denture is used to simulate the teeth, the soft tissue and the vertical dimension of occlusion, and jaw relationship in the fully edentulous jaw. It provides clinicians with a fast workflow and improves clinical efficiency.

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.1
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• pp.77-87
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• 2018

Prosthetic treatment using implants in fully edentulous patients includes implant-supported fixed prosthesis, implant hybrid prosthesis, implant retained- or supported-over-denture and implant supported fixed prosthesis has advantages such as psychological stability, pronunciation. If an implant supported fixed prosthesis is planned, the implants should be placed in consideration of pronunciation, esthetics, and oral hygiene. For this, clinical and radiological diagnosis is indispensable. When placing the prosthetic driven implant at the site determined from the diagnosis, a sufficient amount of alveolar bone and soft tissue support are required. If these requirements found to be insufficient, a wide range of bone grafting should be performed in advance. In this case, a fully edentulous patient with severe alveolar bone resorption due to periodontal disease was treated with a full mouth rehabilitation using implant-supported fixed prosthesis preceding maxillary sinus graft and alveolar bone augmentation. We report this patient were satisfied with esthetic and function.

• The Journal of Korean Academy of Prosthodontics
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• v.55 no.4
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• pp.451-457
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• 2017

Bell's palsy is an acute-onset unilateral peripheral facial neuropathy. For patients with sequelae of facial paresis, the successful rehabilitation of fully edentulous arches is challenging. This case report described the treatment procedures and clinical considerations to fabricate complete dentures of a patient who showed unilateral displacement of mandible, unilateral chewing pattern and parafunctional jaw movement due to sequelae of Bell's palsy. Gothic arch tracing was used to record reproducible centric relation and lingualized occlusion was performed to provide freedom to move between centric relation and the patient's habitual functional area in fabricating satisfactory dentures in terms of function and esthetics.

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.1
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• pp.25-30
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• 2018

In edentulous patients, the advantages of prosthodontic therapy using oral implants include both stability and comfort. Advantages suggested for this approach include the prevention of mandibular bone resorption and increased masticatory function. Implant hybrid prostheses place 4 to 6 implants between the mental foramens, and cantilevers are used to replace the posterior teeth at both ends. The 85 - year - old female patient visited our clinic with complete edentulism in the maxilla and mandible. This article reports a satisfactory clinical and esthetic outcome of full mouth rehabilitation using removable complete denture in the maxilla and implant hybrid prosthesis in the mandible.

• The Journal of Korean Academy of Prosthodontics
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• v.46 no.6
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• pp.591-601
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• 2008

STATEMENT OF PROBLEM: The improvement in oral function and comfort from the dental implant appears to depend on the particular type of implant support used with the denture. The number and positioning of implants have an influence on the force transfer and subsequent stress distribution around implants. Nevertheless, a quantitative comparison has not been made between the types of implant prosthesis used with different materials compared to conventional complete denture. PURPOSE: The objective of this study is to assess the masticatory performance, bite force and impact of two different type of implant supported prostheses on oral health-related quality of life compared to conventional complete denture with GOHAI, validated oral-specific health status measures, the sieving method, and the Prescale Dental System. MATERIAL AND METHODS: From the years 1999 to 2006, a total of 30 completely edentulous patients in a single arch were selected from the Yonsei University Dental Hospital, Department of Prosthodontics and Implant Clinic in Seoul, S. Korea. Patients were divided into 3 groups of 10 each. Group HR was restored with fixed-detachable hybrid prostheses with resin teeth. Group FP had fixed dentures with porcelain teeth while Group CD had a complete denture. The masticatory performance was compared between 3 groups. RESULTS: The results showed a significant improvement in oral health-related quality of life with dental implants compared to a conventional denture in GOHAI comparison. Overall, implant prostheses showed a higher masticatory performance ($S_{50}$) and maximum bite force compared with conventional dentures (P < .05) but no differences between different implant supported prostheses (P > .05). CONCLUSION: Within the limitation of this study, the numbers of implant and material of implant prostheses does not appear to impact patient satisfaction, masticatory performance or bite force.