• The Journal of the Korean dental association
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• v.21 no.5 s.168
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• pp.395-402
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• 1983

The purpose of this study was to apply the etched metal ceramometal retainer using a composite resin and acid-etch procedure with minimal tooth reduction of abutments for the replacement of one missing anterior or posterior tooth. Author obtained the following conclusions. 1. conservation of tooth structure and minimal chair time and patient expense were the primary advantages of etched metal retainer. 2. This fixed partial denture permitted good esthetic results. 3. This retainer was successfully applied for the replacement of one missing anterior or posterior tooth. 4. Proper retainer etching ws an important procedure. 5. Etched castings could be applied to periodontal splinting and post orthodontic fixation.

• The Journal of the Korean dental association
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• v.38 no.1 s.368
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• pp.22-29
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• 2000

The purpose of this paper is to discuss the indication. treatment procedure. prognosos and complication of autogenous transplantation in treating impacted teeth of orthodontic patient. Autogenous transplantation is indicated, in cases of rejecting orthodontic treatment due to the visible orthodontic appliance, the relatively long treatment time, unfavorable tooth position for orthodontic repositioning, unrestorable advanced detal caries. advanced periodontitis and ankylosed tooth. Most process related to the decision of the prognosis is dependent on the careful surgical technique. In comparison to other orthodontic and surgical procedure, the application of the autotransplantation is limited, although its success rate is markedly increased today. Therefore we must we must pay attention to the treatment planning and cooperation with other specialties is needed.

• The Journal of the Korean dental association
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• v.55 no.8
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• pp.556-564
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• 2017

Endodontic surgery is a procedure to treat apical periodontitis or abscess in cases that did not heal after nonsurgical treatment or retreatment. This might include situations with persistent intracanal infection after root canal treatment. Other reasons might be found in extraradicular infection, such as bacterial biofilm on the apical root surface or bacteria within the lesion. For many years, the treatment standard was the traditional approach with surgical burs and amalgam for root-end filling. Endodontic microsurgery is the most recent step in the evolution of endodontic surgery, applying not only ultrasonic tip and biocompatible filling materials but also incorporating high-power magnification and illumination. Although many studies have been published that advocate the use of modern technique, the traditional techniques are still widely used in the surgery community. The purpose of this study was to demonstrate the endodontic microsurgery procedure including the root-end preparation and filling with the use of a surgical operating microscope.

• The Journal of the Korean dental association
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• v.40 no.9 s.400
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• pp.709-715
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• 2002

Two patients with sufficient vertical bone height but insufficient bone width in the anterior mandibular edentulous area, less than 6mm in the buccolingual aspect, for implant placement were chosen for treatment with a ridge splitting procedure. The surgical technique involving greenstick fracture is described. This ridge splitting procedure could be simple placement of implants into ideal restorable positions in severely atrophic, knife-edged ridges and predictable for narrow edentulous alveolar ridge augmentation associated with implant placement. We experienced two cases to place implant with insufficient bone width in the anterior mandibular edentulous area for overdenture be ridge splitting technique. Thus, we will report two cases and review of the literature.

• The Journal of the Korean dental association
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• v.51 no.11
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• pp.604-609
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• 2013

Crown fractures are relatively common trauma to anterior teeth, and should be restored immediately in most cases. For those who suffer from unfortunate traumatic episode, the best treatment option should be minimally invasive approach. In the presence of fractured tooth fragment, reattachment procedure creates positive emotional response in the patient and simplifies the procedure and maintenance of the patient's original tooth anatomy and occlusion. Without fractured tooth fragment, next conservative option could be direct composite restoration which is based on minimal invasion concept. This article proposes simple and very conservative techniques that anyone can do in daily practice.

• Restorative Dentistry and Endodontics
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• v.40 no.3
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• pp.236-240
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• 2015

Traumatic dental injury can result in avulsion of anterior teeth. In young patients, it is a challenge to the dental professional because after replantation, late complications such as ankylosis require tooth extraction. Although prosthetic and orthodontic treatment, and implant placement have been described as the options for intervention, autogenous tooth transplantation could be an effective procedure in growing patients if there is a suitable donor tooth available. This case presents the treatment of a patient who suffered a traumatic injury at 9 years old with avulsion of tooth 21, which had been replanted, and intrusion of tooth 11. Both teeth ankylosed; thus they were removed and autotransplantation of premolars was carried out. After transplantation, the tooth underwent root canal treatment because of pulpal necrosis. Orthodontic treatment began 3 months after transplantation and during 7 years' follow-up the aesthetics and function were maintained without signs of resorption.

• Journal of Korean Dental Science
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• v.13 no.2
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• pp.67-72
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• 2020

Purpose: This clinical study presented the effectiveness of 2-stage posterior maxillary segmental osteotomy (PMSO) under local anesthesia in gaining interarch space to restore the posterior mandibular segment with dental implants. Materials and Methods: Nine patients who received two-stage PMSO for mandibular implant placement from 2003 to 2011 were included in the study. Of the 9 patients, 7 were female and 2 were male. Ages ranged form 28 to 72 (mean 46.6). Potential complications were investigated such as sinus infection, survival of bone segment, inflammatory root resorption of adjacent teeth, relapse of bone segment and timing of implant placement, delivery of implant prosthesis and stability of bone segment. Result: None of the patients showed relapse or complication. Bone segments were stabilized by opposed implant prosthesis. Conclusion: Office-based 2-stage PMSO under local anesthesia can be considered a stable and predictable procedure. Also pedicle damage can be avoided by allowing favor of blood supply to the bone segments. From these advantages, it can be concluded that this surgical procedure can decrease post-operative complications.

• Journal of Technologic Dentistry
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• v.29 no.2
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• pp.49-64
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• 2007

This research collected the curriculum for Dental Technology from a total of 20 schools -3-year colleges and 4-year colleges- all in Korea. And we analyzed the average credits of subjects from students. As a result of this analysis, we get the conclusion below: 1. In a distribution which students answered about each subjects; Seminar, Dental morphology I II, Dental morphology practice I II, and Dental devices & instruments don't have many credits and mostly have a converged tendency in high points, according to the arithmetic mean of the major basis subjects. 2. In an analysis of the correlation which is based on the distinction of sex: Complete denture prosthodontics I II III, Dental orthodontics I II, Dental orthodontics practice I II, and Dental orthodontics & practice III have a meaningful difference. ($\rho$< 0.05 ) 3. In an analysis of the correlation which is based on an age The major basis subjects -Introduction to dental technology, Dental esthetic, and Dental casting procedure-, and the major application subjects -Crown and bridge prosthodontics practice, Complete denture prosthodontics, Dental orthodontics, Dental orthodontics practice, and Operative dentistry laboratory technology- have meaningful difference. ($\rho$< 0.05 ) 4. In a correlation coefficient between subjects; The correlation coefficient of the major application subjects is higher than the major basis subjects. According to the student - t, we found that the level of significance is $\rho$< 0.001, which is meaningful. We feel the lack of a limitation which we didn't survey all students who are major in Department of Dental Technology. And we also feel that we'd better to consider not only students who being in college but also graduated students.

• The Journal of Korean Academy of Prosthodontics
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• v.51 no.4
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• pp.292-299
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• 2013

Purpose: There is a growing concern for the cost management of medical institutions. The purpose of this study was to estimate Activity-Based Costing (ABC) for dental implant cost. ABC refers to allocating resources or cost based on the activities of services. Materials and methods: A dental institution located in the metropolitan area was selected in this study. The tax accounting data of the institution were utilized to confirm total cost, and the institution was asked to make out clinical activities to figure out what activities were carried out. The direct cost and indirect cost for dental implant were separately estimated, and cost driver was analyzed to estimate the indirect cost accurately. Results: The rates of the direct and indirect cost respectively stood at 35.8 and 49.5 percent. The cost for a dental implant was found to be approximately 1,579 won, and the cost of prosthetic surgery and treatment that included implant surgery accounted for the largest portion of the cost, which was 470 thousand won (30%). And the weight of training and education on dentistry was relatively higher than that of the other kinds of treatment. Conclusion: In order to ensure accurate and scientific costing for dental implant, not only direct medical procedure but every pre- and post-procedure activity should fully be taken into account. Pre-activities, post-activities, education and training are included in the indirect cost, but all these activities are mandatory and associated with the quality of treatment and the satisfaction level of patients.

• Journal of Oral Medicine and Pain
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• v.22 no.2
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• pp.373-381
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• 1997

The anxiety and depression level of new outpatients wert studied clinically by means of The Hospital Anxiety and Depression Scale(HAD). 64 males and 97 females were subjected at local dental clinic and also 6l male and 91 females were studied at the Dept. of Oral Medicine, PNUH, during period from 1996 to 1997 The obtained results were as follows : 1. Anxiety disorder was 17.76% in the new dental outpatients of university hospital and 13.66% in the local dental Clinic find depression disorder was 7.23% In the University hospital and 3.72% in the local dental clinic. 2. Mean values of depression and anxiety level were within normal range. 3. Anxiety level in female was significantly higher than that in male at the local dental clinic (p<0.05). 4. Anxiety and depression level in university hospital outpatients decreased in order of clerk, housewife and student(p<0.01). 5. The outpatients of university hospital with lower education level showed more anxious and depressed. 6. Anxiety and depression of unmarried group of new outpatients in university hospital was higher than that of married group. Through the above results, proper treatment plans will be demanded In the dental procedure, because psychologic 야sorders as anxiety and depression were included in the 25% of new outpatients of university hospital and 17% at local dental clinic.