Relining and rebasing are essential for long-term success and oral health in removable prosthodontics. Major features of failures between metal base and relining resins are adhesive failure due to lack of chemical bonding. The purpose of this study was to find a better metal primer and metal surface treatment method that enhance the bonding strength with relining resin materials. The surfaces of ticonium alloys were treated with 25micrometer sandblasting (Group A), stone wheel (Group B), stone wheel and EZ oxisor (Group C), 75micrometer sandblasting (Group D) and EZ oxisor application after 75micrometer sandblasting (Group E). They were subdivided into no primer application (Group I), MR bond application (Group II) and Metafast bonding liner (Group III). Then specimens were completed though being bonded with relining resins. The specimens were stored in 38degrees C water for 48 hours and tensile strength was measured using the universal testing machine. The results were as follows, 1. Primer application groups showed higher bond strength than no primer application group(p<0.05). 2. In comparison with primer application groups, MR bond group showed higher bond strength than Meta fast bonding liner application group(p<0.05). 3. In comparison with surface treatment methods. Bond strengths of group A and B were significantly different with group C, D, and E, and group C were significantly different with group D, and E in no primer application group(p<0.05). In primer application groups, group A, B, C were significantly different with group D and E(p<0.05). According to results of this study, Metal primer application and metal surface roughening were considered to be advantageous for relining of metal base dentures.
Adhesives ; Alloys ; Denture Bases* ; Dentures* ; Oral Health ; Prosthodontics ; Tensile Strength* ; Water

No abstract available.
Longitudinal Ligaments* ; Spine*

No abstract available.
Emergencies* ; Emergency Service, Hospital* ; Hospitals, Teaching* ; Korea* ; Medical Records*

No abstract available.
Amputation* ; Replantation*

Most authorities including WHO recommended immununizing infants with BCG as early as possible in areas prevalent with tuberculosis, however the optimal time for immunization has not well been characterized. Therefore the investigation was undertaken by vaccinating various infant groups of different ages with BCG and subsequently evaluating for adverse effects and tuberculin reactions, in order to contribute to undestanding the optimal time for immunization. Four hundred eighty three infants from the newborn nursery and the well baby clinic of Hanyang University Hospital who had no family history of tuberculosis were divided into three groups; group I of infants immunized within 7 days after birth, group II of infants immunized at about 1 month of age and group III of infants immunized at about 3 months of age. To each infant 0.1 ml of BCG(Institute Merieux, France) was administered intradermaly and approximately 3 months later tuberculin skin test using 5 TU PPD (NIH, Korea) was performed. Adverse reactions following BCG vaccination such as temperature elevation, induration alone or with suppuration at or near the injection site, and lymph node enlargement were also analyzed. The summary of the results is as follows. 1) Distribution of diameters of induration on tuberculin skin test illustrated incomplete bimodal configuration in all three different age groups. The means 2 standard deviations of diameters of indurations distributed on the main bells were 10.07 4.52 mm in group I, 10.65 3.82 mm in group II, and 10.83 5.08 mm in group III, and were not significantly different. 2) Criteria for positive tuberculin reaction was diameters of indurations equal to or greater than 6mm, 2 standard deviations below the mean values of diameters of indurations on the main bells. 3) The positive tuberculin reaction rates of 85.8% in group II and 88.6% in group III were significantly greater than 74.1% in group I. 4) Incidence of complications following BCG vaccination including temperature elevation, induration with suppuration, and localized lymphadenopathy was not different among three groups and the serious complications such as temperature elevation and lymphadenopathy were minimal. The data indicate that it is appropriate to immunize infants with BCG at about one month of age and the incidence of complications following BCG vaccination was not different among three infant groups of different ages.
Humans ; Immunization ; Incidence ; Infant* ; Infant, Newborn ; Lymph Nodes ; Lymphatic Diseases ; Mycobacterium bovis* ; Nurseries ; Parturition ; Skin Tests* ; Skin* ; Suppuration ; Tuberculin Test ; Tuberculin* ; Tuberculosis ; Vaccination*

Mucinous adenocarcinomas of the anal region constitute only 2% of anal cancer and adenocarcinoma developing in a chronic tuberculous anal fistula is extremely rare. In most cases, its origin is difficult to ascertain because the primary sites have already been destroyed before any diagnosis of malignancy is made. We experienced a case of perianal adcnocarcinoma developing in chronic tuberculous anal fistula, which was treated by abdominoperineal resection with preoperative chemo-irradiation. We reported a case and reviewed the related literatures.
Adenocarcinoma* ; Adenocarcinoma, Mucinous ; Anus Neoplasms ; Diagnosis ; Rectal Fistula*

BACKGROUND: There is a paucity of literature on the use of hip arthroscopy for pathologic conditions in skeletally immature patients. Thus, the indications and safety of the procedure are still unclear. The purpose of this study was to investigate the safety and functional outcomes of hip arthroscopy for pediatric and adolescent hip disorders. We further attempted to characterize arthroscopic findings in each disease. METHODS: We retrospectively reviewed 32 children and adolescents with hip disorders who underwent 34 hip arthroscopic procedures at a tertiary care children's hospital from January 2010 to December 2016. We evaluated functional limitations and improvement after operation by using the modified Harris hip score (HHS), the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), subjective pain assessment with a visual analog scale (VAS), and range of hip motion as well as the complications of hip arthroscopy. Arthroscopic findings in each disease were recorded. RESULTS: Hip arthroscopy was performed for Legg-Calvé-Perthes disease (n = 6), developmental dysplasia of the hip (n = 6), slipped capital femoral epiphysis (n = 5), idiopathic femoroacetabular impingement (n = 6), sequelae of septic arthritis of the hip (n = 3), hereditary multiple exostosis (n = 2), synovial giant cell tumor (n = 3), idiopathic chondrolysis (n = 2), and posttraumatic osteonecrosis of the femoral head (n = 1). Overall, there was a significant improvement in the modified HHS, WOMAC, VAS, and range of hip motion. Symptom improvement was not observed for more than 18 months in four patients who had dysplastic acetabulum with a labral tear (n = 2) or a recurrent femoral head bump (n = 2). There were no complications except transient perineal numbness in five patients. CONCLUSIONS Our short-term follow-up evaluation shows that hip arthroscopy for pediatric and adolescent hip disorder is a less invasive and safe procedure. It appears to be effective in improving functional impairment caused by femoroacetabular impingement between the deformed femoral head and acetabulum or intra-articular focal problems in pediatric and adolescent hip disorders.

OBJECTIVE: To evaluate the role of anterior lumbar interbody fusion in treatment of failed back surgery syndrome, the authors present a retrospectively analysis of the clinical & radiological results of anterior lumbar interbody fusion. METHODS: Between September 2000 and September 2001, twenty two patients underwent anterior lumbar interbody fusion for treatment of failed back surgery syndrome. We analyzed clinical & radiological changes. The mean follow-up period was 19 months. RESULTS: Overall satisfactory outcome was 90%. The mean VAS was changed from 8.3 to 3.7. The mean Oswestry Disability Index(%) was changed from 70 to 33. The fusion rate was 86%. There were 2 complications; wound infection, sympathetic dysfunction. CONCLUSION: We conclude that the anterior lumbar interbody fusion seems to be a safe and favorable method in treating selective patients with failed back surgery syndrome.
Failed Back Surgery Syndrome* ; Follow-Up Studies ; Humans ; Retrospective Studies ; Wound Infection

STATEMENT OF PROBLEM: The most commonly reported problem associated with dental implant restoration is the loosening of the screws. PURPOSE: This study compared the efficacy of an implant system incorporating an anti-rotational locking sleeve(Anti-Rotating Inner Post Screw System(ARIPS-system)) with other, traditional implant systems as a means of minimizing vibration loosening. MATERIALS AND METHODS: Three implant systems were examined; the conventional external hex type, the ARIPS-system, and the internal taper type implant system. 30 specimens(10 samples per group)were fabricated and each abutment screw was secured to the implant fixture with 32Ncm of torque force and loosening torque was measured using a Torque Gauge. The procedure was repeated 3 times, recording initial loosening torque each time. The re-tightened abutment screw was subjected to a cyclic load having a maximum force of 200N and minimum of 20N at 2Hz over a period of 12,600 cycles, after which the loosening torque was measured. Measured values were calaulated for statistical analysis. Analysis of measured value was performed by 3 methods: (i) as a percentage average of the initial 3 loosening-torque values(initial loosening value) to the tightening torque of 32Ncm, (ii) as a percentage of the loosening torque value after a load of 200N(experimental value) to the initial loosening value, and (iii) as a percentage of the experimental value to the 32Ncm of tightening torque. The analyses shows the amount of initial loosening at the screw, loosening by repetitive load and the the final loosening value. RESULTS: The results of this study were as follows. (1) Percentage of initial loosening value to tightening-torque was increased in order of external hex, ARIPS-system and internal taper and all values between each groups showed statistical significance (p<0.05). (2) Percentage of experimental value to initial loosening value was increased in order of external hex, ARIPS-system and internal taper. Value of internal taper showed significant difference with those of external hex and ARIPS-system (p <0.05). (3) Percentage of experimental value to tightening torque was increased in order of external hex, ARIPS-system and internal taper and all values between each groups showed statistical significance (p <0.05). CONCLUSION: The results of the analysis of the final loosening level value, which are closely correlated to clinical use, show that the ARIPS-system can be a useful means of minimizing abutment screw loosening when compared to the external hex type system. Although further clinical studies need to be made, the ARIPS-system should be considered to maximize the long-term success of the implant prosthesis.
Dental Implants ; Prostheses and Implants ; Torque ; Vibration

Between March 1995 and March 1996, we used a newly-designed neurosurgical procedure, based on 'keyhole surgery', to operate on 20 patients diagnosed as suffering from lumbar spinal stenosis without instability. The unique surgical steps involved in this procedure are: 1) three-quarter prone position of the patient; 2) small paramedian skin incision; 3) half-way incision of the spinous process; 4) small turnover funnel shaped unilateral laminectomy and wide forminotomy using high speed drills; 5) extensive ligament flavectomy; 6) microsurgical decompression without using nerve root retractor; 7) cosmetic wound closure. In some cases, if bilateral radicular symptom was present, the contralateral nerve root was explored through the unilateral laminectomy opening; this was achieved by changing the inclination of the base of the spinous process and extensively removing of the ligamentum flavum. Compared with conventional procedures, these technical innovations offer both procedural adventages and a better clinical outcome. Because of the small patient populations and short follow-up period, this technique requires further investigation, but we hope it will provide another option for future lumbar stenosis surgery. Further technical refinements and long-term follow-up results will be reported elsewhere.
Constriction, Pathologic* ; Decompression* ; Follow-Up Studies ; Hope ; Humans ; Laminectomy ; Ligaments ; Ligamentum Flavum ; Neurosurgical Procedures ; Prone Position ; Skin ; Spinal Stenosis ; Wounds and Injuries