This study was performed to investigate the distribution and magnitude of stress at supporting tissue of abutment teeth and residual ridge tissue with remaining unilateral posterior teeth. Four types of removable partial dentures that included clasp retained removable partial denture, attachment retained removable partial denture, telescopic removable partial denture, and swing-lock partial denture were designed, and strain gauge was used for stress analysis. Each prosthesis was subjected to simulated vertical and oblique load. The following conclusions were drawn from this study. 1. The clasp retained removable partial denture generally distributed simulated vertical force more evenly to the supporting structure. 2. The stress at buccal side of 1st premolar was the lowest in swing-lock partial denture and that was highest in attchment retained removable partial denture. The stress at lingual side of 1st premolar was the lowest in telescopic partial denture. 3. In clasp retained removable partial denture, stress was lower at load site and ridge crest at midline, but it was higher at lst premolar area on vertical load. 4. In attachment removable partial denture, stresses at buccal side of 1st premolar, lingual side of 1st premolar on vertical load, and ridge crest at midline on oblique load were higher. 5. In telescopic removable partial denture, stress at lingual side of 1st premolar was the least in all removable partial dentures, but the stress at load site was higher. 6. In swing-lock removable partial denture, stress at buccal side of 1st premolar was the lowest, and stresses at load site and distal end of residual ridge crest were higher.
Bicuspid ; Denture Design* ; Denture, Partial ; Denture, Partial, Removable ; Dentures* ; Prostheses and Implants ; Tooth*

Cutaneous horn is a clinical diagnosis based upon the presence of a large protuberant mass of keratin. We report a case of cutaneous horn arising from dermatofibroma in a 31-year old woman. A silver whitish colored comical hyperkeratotic protruding lesion (1.0  0.7 cm size) from the red brown colored nodule was observed. Histopathologic findings showed characteristic findings of dermatofibroma and cutaneous horn. The lesion was removed by surgical excision.
Animals ; Diagnosis ; Female ; Histiocytoma, Benign Fibrous* ; Horns* ; Humans ; Silver

No abstract available.
Ethmoid Sinus*

The treatment of intra-articular fractures of distal radius is difficult and has various problems. Maximum recovery of wrist function is dependent on accurate and stable reduction of the radial articular surface. We analysed one hundred and five cases of intra-articular fracture of distal radius followed for more than 6 months at Yonsei University from January 1980 to September 1988 and studied the result according to the type of treatment. The results of this study were as follows; 1. The incidence was high in female who aged over 6th decade, and in male who is active aged. 2. The main cause of this injury was fall down(34.3%). 3. In a group of closed reduction and cast immobilization, the functional result was satisfactory in 45.4%. 4. In a group of closed reduction and percutaneous pinning, the functional result was satisfactory in 50%. 5. In a group of open reduction and internal fixation, the functional result was satisfactory in 83. 3%. 6. In a group of external fixation, the functional result was satisfactory in 33.3%. 7. Overall result was mainly correlated with initial severity of the injury and anatomical reduction of the intra-articular surface.
Clinical Study ; Female ; Humans ; Immobilization ; Incidence ; Intra-Articular Fractures ; Male ; Radius ; Wrist

Since Klemm introduced the concept of antibiotic-containing bone cement for the treatment of chronic osteomyelitis, a number of studies have demonstrated the positive results of this therapy. It has been proved that antibiotic-containing bone cement continuously releases high levels of atibiotics locally into the infected and avascular wound environment. Antibiotic-containing bone cement provides several distinct advantages over irrigation-suction drainage. The major objective of this study is to analyze the results of therapy using antibiotic-containing bone cement beads for chronic osteomyelitis. The authors analyzed 21 cases of chronic osteomyelitis in patients who had been treated by saucerization and antibiotic-containing bone cement beads at Chosun University Hospital, between February 1990 and January 1993. Each patient's case was followed for at least thirteen months after operation. The results are as follows: 1. The causes of osteomyelitis were postoperative complications(10 patients), open fracture(8 patients), and hematogenous osteomyelitis(3 patients). 2. Staphylococcus aureus was the most common organism causing osteomyelitis, followed by Pseudomonas. 3. The femur was the most common location of lesion(11 patients) followed by the tibia(7 patients), the humerus(2 patients) and the ulna (1 patients). 4. Pus drainage was stopped in 13 cases with one insertion of the beads, in 2 cases with two insertions and in 2 cases with three insertions. 5. Therapy using antibiotic-containing bone cement beads can be regraded as an effective method of increasing local antibacterial activity by releasing the antibiotic into surrounding tissue over a continuous period in the treatment of chronic osteomyelitis. Antibiotic-containing bone cement beads are useful in the treatment of chronic osteomyelitis.
Drainage ; Femur ; Humans ; Methods ; Osteomyelitis ; Pseudomonas ; Staphylococcus aureus ; Suppuration ; Ulna ; Wounds and Injuries

A retrospective analysis of eighty-six consecutive patients who underwent stabilization with AO internal fixator for thoracolumbar spine fractures was performed at Wonju Christian hospital between 1988 and 1994. The purpose of this study was to determine the quality of reduction and stabilization with the fixateur interne(F-I) and the effects of limited posterior segmental fixation on neurologic recovery and rehabilitation. The mean wedge angle of the fractured vertebra was changed from 19.2° preoperatively to 8.4° preoperatively, and remained almost unchanged at last follow up(10.2°). Also, the wedge index showed nearly no bony loss of correction within the reduced fracture vertebra(corrected from 0.63 to 0.83 and 0.81 at follow up). The mean kyphosis angle was corrected from 22.3° to 8.3° and 16.9° at last follow up. Most of the change of kyphosis was due to the disc space collapse above the fractured vertebra. Transpedicular cancellous bone grafting for the vertebral body fractures effected a significant improvement in results of fixation. All cases of translational displacement were anatomically reduced. No neurologic or vascular complication occurred. Fixateur interne is capable of achieving three-demensional reduction in unstable thoracolumbar spinal fractures and maintaining sufficient stability until bony healing is achieved.
Bone Transplantation ; Follow-Up Studies ; Gangwon-do ; Humans ; Internal Fixators ; Kyphosis ; Rehabilitation ; Retrospective Studies ; Spinal Fractures ; Spine

No abstract available.
Animals ; Knee Joint* ; Knee* ; Mice* ; Parturition*

Aortic transection or interruption is a rare condition which developed after an acute deceleration injury. Its occurrence depends on the location and direction of the force applied and is usually from motor vehicle accident or falling down. The exact incidence of aortic transection in trauma is not known but, when develops, only about 10-15% of the victims can furtive and be transported to the hospital. Even in the survivors, majority of them will be fatal within a few days if a prompt diagnosis and surgical treatments are not made. Aggressive diagnostic work-up is recommended for the patients with high suspicious index, which would salvage the victims with this fatal condition. We report the experience of two cases of aortic transection or interruption following motor vehicle accidents.
Deceleration ; Diagnosis ; Early Diagnosis* ; Humans ; Incidence ; Motor Vehicles ; Survivors ; Thorax* ; Wounds and Injuries*

No abstract available.
Azithromycin* ; Pregnancy* ; Scrub Typhus*

No abstract available.