• Journal of Technologic Dentistry
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• v.10 no.1
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• pp.133-150
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• 1988

In order to know the recognition of dentist and laboratory technician about work order transmission and communication and troubles of restorations, this study was conducted for 84 practicing dentists and 122 dental laboratory technicians in Pusan during Mar. to Apr. 1988 using a questionnaire method and was analyzed by the use of percentage, $X^2$-test. Conclusions It is necessary that both dentist and laboratory technician clearly reconize and fulfill their responsibilities to one another. Dentist and dental laboratory technician should offer constructive criticisn to one another as interdependent member of a team. Effective use of work authorizations certainly promotes communication between the dentist and dental laboratory thechnician.

• Journal of dental hygiene science
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• v.11 no.4
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• pp.299-303
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• 2011

The purpose of this case report was to present an example of an esthetic and functional rehabilitation of anterior teeth with tetracycline discoloration and minor morphological abnormality of a 39-year old female. A chairside computer-aided design/computer-aided manufacturing (CAD/CAM) system with CEREC AC was applied for the prosthetic procedure and all ceramic crowns made with lithum disilicate (IPS e.max CAD) restored the esthetic and functional features of sixteen anterior teeth successfully.

• The Journal of the Korean dental association
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• v.49 no.5
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• pp.260-264
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• 2011

Zirconia ($ZrO_2$) is a crystalline dioxide of zirconium. Dental zirconia blocks for CAD/CAM are usually fabricated with powders of tetragonal zirconia polycrystals (TZP) stabilized with 3mol% yttria. Because of its mechanical properties similar to those of metals and color similar to tooth, it is evaluated to attain the two purposes at a time, strength and aesthetic in prosthetic dentistry. The ability of transformation of Y-TZP from tetragonal to monoclinic helps to prevent crack propagation and contributes the increase of strength and fracture toughness. Two different types of blocks, soft and hard, are used to prepare the zirconia frameworks. The fuzzy-sintered block is difficult in machining, so pre-sintered soft 3Y-TZP block is usually used to mill by computer aided machining.

• Journal of Dental Rehabilitation and Applied Science
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• v.36 no.2
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• pp.138-144
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• 2020

Implant fracture is rare, but one of the most serious problem in implantation. Treatment of implant fracture can be different according to the extent of the fracture and on the state of the surrounding prosthetic restoration. Maintaining or submerging implant after treatment of peri-implantitis can be useful options for cases of tear-like fracture on the coronal area of an implant.

• The Journal of the Korean dental association
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• v.49 no.6
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• pp.334-339
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• 2011

The purpose of this study was to investigate the oral health condition and dental treatment need of low socioeconomic elderly people. A total of 116 elderly people who visited Boramae Hospital were evaluated with oral examination and panoramic radiogaph. The results showed that the most expecting treatment of low income aged people was removable partial denture. It was very clear in the age group of 70-84. In the age group under 70, most of the patients wanted prosthodontic tratement using fixed partial denture or crown. As the result of this study, elderly people with low socioeconomic status under age 85 needed removable partial denture or fixed prosthesis than complete denture. It is necessary to develop a more expanding and customized Senile prosthetic restoration program.

• The Journal of the Korean dental association
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• v.55 no.10
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• pp.733-737
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• 2017

Successful osseo-integration of dental implants that Dr. Bronemak reported in 1965 had been ground-breaking research in the restorative dentistry for the missing dentition. Clinical application of dental implants in the restorative dentistry has begun with the role of retention and support for the complete denture, beyond the functional recovery in partially missing area, and succeeds in the cosmetic recovery for anterior missing area. Recently, immediate implantation and loading after the extraction have been preferred by many excellent clinicians especially on maxillary anterior missing area, because they want to prevent from the absorption of residual alveolar bone. But it is hard to decide immediate loading for common clinicians also, because it is difficult for them to convict proper osseo-integration. In this article, immediate implantation and delayed loading case on maxillay anterior region have been introduced and predictable prosthetic procedure for the esthetic result has suggested.

• Journal of Technologic Dentistry
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• v.38 no.3
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• pp.203-208
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• 2016

Purpose: This study introduces the production process of dog's dental prosthesis using an automated dental prosthetics technology. The occlusal interaction of dog's dental prosthesis was observed. Methods: This study was proceeded with dog's the mandibular first molar teeth. The 3D CAD designed to 3D model specimens was observed by CAD software. and The specimens designed to 3D model specimens was observed occlusal interaction by using articulator. Results: Occlusal contact point in prosthetic specimens were observed in buccal surface. and 98% of the size of the crown is the best occlusal relationship. Conclusion: Observation of occlusal relations result to 98% of the size of the crown is the best.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.5
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• pp.305-308
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• 2018

An 87-year-old woman was referred for the extraction of residual teeth and removal of tori prior to prosthetic treatment. After surgery under general anesthesia, the surgical tape was removed to detach the bispectral index sensor and the hair cover. After the surgical tape was removed, skin injury occurred on the left side of her face. After epidermis repositioning and ointment application, a dressing was placed over the injury. Her wound was found to have healed completely on follow-up examination. Medical adhesive related skin injury (MARSI) is a complication that can occur after surgery and subjects at the extremes of age with fragile skin are at a higher risk for such injuries. Careful assessment of the risk factors associated with MARSI is an absolute necessity.

• The Journal of the Korean dental association
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• v.50 no.3
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• pp.126-139
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• 2012

Loss of dentition can lead to not only compromised esthetics and functions of the patient, but also alveolar bone resorption. Bone grafting with prosthetic reconstruction of the gingiva can be selected for the treatment, and it provides many benefits as prosthetic gingival reconstruction does not require a complicated surgical process and is available within a short period of time, with stable clinical results. However, conventional porcelain fused to metal prosthesis has certain limits due to its size, and deformation after several firing procedures. In this clinical report, the author would like to introduce a patient with severe alveolar resorption who was treated with gingiva-shaped zirconia/titanium CAD/CAM implant fixed prosthesis for esthetic and functional rehabilitation. Clinical reports Clinical report 1, 2 : A case of loss of anterior dentition with atrophied alveolar bone. Implant retained zirconia bridge applied with Procera implant bridge system to simulate the gingiva. Upper structure was fabricated with zirconia all ceramic crown. Clinical report 3, 4 : A case of atrophied maxillary alveolus was reconstructed with fixed implant prosthesis, a CAD/CAM designed titanium structure covered wi th resin on its surface. Anterior dentition was reconstructed with zirconia crown. Conclusion and clinical uses. All patients were satisfied with the outcome, and maintained good oral hygiene. Zirconia/titanium implant fixed prosthesis fabricated by CAD/CAM system was highly accurate and showed adequate histological response. No critical failure was seen on the implant fixture and abutment overall. Sites of severe alveolar bone loss can be rehabilitated by implant fixed prosthesis with CAD/CAM system. This type of prosthesis can offer artificial gingival structure and can give more satisfying esthetics and functions, and as a result the patients were able to accept the outcome more fondly, which makes us less than hard to think that it can be a more convenient treatment for the practitioners.

• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.4
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• pp.331-337
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• 2018

Prosthetic rehabilitation of an edentulous patient who has a maxillary defect is difficult to achieve for many clinicians. The maxillary defect causes leakage of air during pronunciation and compromises denture stability, support and retention by reducing denture-bearing area and breaking peripheral seal. In these patients, the sizes and shapes of defects are very important factors which attribute to prognosis of maxillary obturators. This case report shows the prosthetic rehabilitation of the patient who had maxillectomy on the right maxillary sinus because of squamous cell carcinoma. The patient had a stepwise treatment protocol which started with pre-operative dental examination and followed by surgical, interim and definitive obturation phase. In this case, an acceptable level of retention could be obtained due to well-defined static defects and the preserved premaxillae and the patient was satisfied with the result of the treatment in the aspect of function and esthetics.