PURPOSE: The purpose of this study was to investigate the diametral tensile strength of polymer-based temporary crown and fixed partial denture (FPD) materials, and the change of the diametral tensile strength with time. MATERIAL AND METHODS: One monomethacrylate-based temporary crown and FPD material (Trim) and three dimethacrylate-based ones (Protemp 3 Garant, Temphase, Luxtemp) were investigated. 20 specimens (the empty set 4 mm x 6 mm) were fabricated and randomly divided into two groups (Group I: Immediately, Group II: 1 hour) according to the measurement time after completion of mixing. Universal Testing Machine was used to load the specimens at a cross-head speed of 0.5 mm/min. The data were analyzed using one-way ANOVA, the multiple comparison Scheffe test and independent sample t test (alpha = 0.05). RESULTS: Trim showed severe permanent deformation without an obvious fracture during loading at both times. There were statistically significant differences among the dimethacrylate-based materials. The dimethacrylate-based materials presented an increase in strength from 5 minutes to 1 hour and were as follows: Protemp 3 Garant (23.16 - 37.6 MPa), Temphase (22.27 - 28.08 MPa), Luxatemp (14.46 - 20.59 MPa). Protemp 3 Garant showed the highest value. CONCLUSION: The dimethacrylate-based temporary materials tested were stronger in diametral tensile strength than the monomethacrylate-based one. The diametral tensile strength of the materials investigated increased with time.
Acrylic Resins ; Bisphenol A-Glycidyl Methacrylate ; Collodion ; Composite Resins ; Crowns ; Denture, Partial, Fixed ; Methacrylates ; Polymethacrylic Acids ; Tensile Strength

No abstract available.
Apnea* ; Humans

No abstract available.
Osteoporosis* ; Spondylolisthesis*

No abstract available.
Gelatin Sponge, Absorbable* ; Hemorrhage* ; Thrombin*

PURPOSE: Prostatic abscess is an uncommon urologic disease but has a high mortality rate if not treated properly. Furthermore, diagnosis and proper treatment of prostatic abscesses remains a challenge for physicians. Therefore, we compared data on conservative treatments, transurethral resection of prostatic abscess, and transrectal ultrasound (TRUS)-guided needle aspiration in 52 cases over a 10-year period. MATERIALS AND METHODS: The records of 52 patients diagnosed with prostatic abscess by computed tomography at Gangnam Severance Hospital between January 2000 and September 2010 were retrospectively reviewed. All patients were discharged when their leukocytosis had normalized and they had been free of fever for 2 days. Multivariate regression analysis was done to determine independent risk factors for the length of hospitalization. RESULTS: At the time of diagnosis, the average age of the 52 patients was 61.3 years (range, 33 to 81 years), the average volume of the prostate was 56.3 ml (range, 21 to 223 ml), the average prostate-specific antigen was 18.54 ng/ml (range, 2.0 to 57.0 ng/ml), and the average abscess size was 3.8 cm (range, 2.1 to 5.5 cm). All patients were treated with parenteral antibiotics during their hospital stay with intravenous antibiotics (fluoroquinolone monotherapy or 3rd-generation cephalosporin in combination with an aminoglycoside). Of 52 patients, 22 had diabetes mellitus (42.3%), 19 had hypertension (36.5%), and 7 (13.5%) had paraplegia due to spinal cord injury. The most common symptoms were fever (47, 90.4%), perineal discomfort (43, 82.7%), dysuria (40, 76.9%), and urinary retention (29, 55.8%). Prostatic abscesses were treated by conservative treatment (11 cases), transurethral resection of prostatic abscess (23 cases), and TRUS-guided needle aspiration (18 cases). The average hospitalization stay was 17.5 days (range, 6 to 39 days); that of conservative treatment patients was 19.1 days (range, 9 to 39 days). Patients treated by transurethral resection of prostatic abscess and TRUS-guided needle aspiration stayed 10.2 days (range, 6 to 15 days) and 23.25 days (range, 18 to 34 days), respectively. Of the 18 cases who underwent needle aspiration, prostatic abscesses recurred in 4 cases (22.2%) within 1 month after patient discharge. The 2 patients subjected to conservative treatment died due to sepsis. We found no independent factors that affected the average hospitalization period. CONCLUSIONS: Patients with prostatic abscess treated by transurethral resection of the prostate had a significantly shorter hospitalization length compared with needle aspiration.
Abscess ; Anti-Bacterial Agents ; Diabetes Mellitus ; Dysuria ; Fever ; Hospitalization ; Humans ; Hypertension ; Length of Stay ; Leukocytosis ; Needles ; Paraplegia ; Patient Discharge ; Prostate ; Prostate-Specific Antigen ; Retrospective Studies ; Risk Factors ; Sepsis ; Spinal Cord Injuries ; Transurethral Resection of Prostate ; Urinary Retention ; Urologic Diseases

A 22 year old male with hemophilia B was scheduled for the correction of a right subtrochanteric femur fracture. Plasma concentration of coagulation factor IX in this patient was 50% of the normal level and the partial thromboplastin time was 57 seconds on the first day of hospital administration. We started the intravenous administration of facnyne injection (factor IX) 11 days before the operation when his plasma concentration was 20%. His plasma concentration was 40% on the operation day. The operation and general anesthesia were accomplished safely without severe hemorrhage or major complication. He received facnyne injection continuously until the 5th postoperative day: 25-43% of his plasma concentrations of factor IX was maintained. He had no problem with postoperative care.
Administration, Intravenous ; Anesthesia, General ; Factor IX ; Femur ; Hemophilia A* ; Hemophilia B* ; Hemorrhage ; Hospital Administration ; Humans ; Male ; Partial Thromboplastin Time ; Plasma ; Postoperative Care ; Young Adult

Implant-supported overdenture is a reliable treatment option for the patients with edentulous mandible when they have difficulty in using complete dentures. Several options have been used for implant-supported overdenture attachments. Among these, bar attachment system has greater retention and better maintainability than others. SFI-Bar(R) is prefabricated and can be adjustable at chairside. Therefore, laboratory procedures such as soldering and welding are unnecessary, which leads to fewer errors and lower costs. A 67-year-old female patient presented, complaining of mobility of lower anterior teeth with old denture. She had been wearing complete denture in the maxilla and removable partial denture in the mandible with severe bone loss. After extracting the teeth, two implants were placed in front of mental foramen, and SFI-Bar(R) was connected. A tube bar was seated to two adapters through large ball joints and fixation screws, connecting each implant. The length of the tube bar was adjusted according to inter-implant distance. Then, a female part was attached to the bar beneath the new denture. This clinical report describes two-implant-supported overdenture using the SFI-Bar(R) system in a mandibular edentulous patient.
Aged ; Dental Prosthesis, Implant-Supported ; Denture, Complete ; Denture, Overlay ; Denture, Partial, Removable ; Dentures ; Female ; Humans ; Jaw, Edentulous ; Joints ; Mandible ; Maxilla ; Retention (Psychology) ; Tooth ; Welding

OBJECTIVE: Vertebral distraction is routinely performed during anterior cervical discectomy and fusion (ACDF). Overdistraction can injure the facet joints and may cause postoperative neck pain consequently. The purpose of this study was to investigate the clinical relevance of distraction force during ACDF. METHODS: This study included 24 consecutive patients with single level cervical disc disease undergoing single level ACDF. We measure the maximum torque just before the the arm of the Caspar retractor was suspended by the rachet mechanism by turning the lever on the movable arm using a torque meter. In order to turn the lever using the torque driver, we made a linear groove on the top of the lever. We compared the neck disability index (NDI) and visual analogue scale (VAS) scores between the high torque group (distraction force>6 kgf.cm) and the low torque group (distraction force< or =6 kgf.cm) at routine postoperative intervals of 1, 3, 5 days and 1, 3, 6 months. RESULTS: The VAS scores for posterior neck pain had a linear correlation with torque at postoperative 1st and 3rd days (y=0.99x-1.1, r2=0.82; y=0.77x-0.63, r2=0.73, respectively). VAS scores for posterior neck pain were lower in the low torque group than in the high torque group on both 1 and 3 days postoperatively (3.1+/-1.3, 2.6+/-1.0 compared with 6.0+/-0.6, 4.9+/-0.8, p<0.01). However, the difference in NDI scores was not statistically significant in all postoperative periods. CONCLUSION: Vertebral distraction may cause posterior neck pain in the immediate postoperative days. We recommend not to distract the intervertebral disc space excessively with a force of more than 6.0 kgf.cm.
Arm ; Diskectomy ; Humans ; Intervertebral Disc ; Neck ; Neck Pain ; Pain, Postoperative ; Spinal Fusion ; Torque ; Zygapophyseal Joint

Tailgut cysts in retrorectal or presacral space are rare and the derivatives of the embryonic post-anal gut. It is thought to arise from vestiges of embryonic hindgut. The lesions were usually multicystic and lined by a variety of epithelial types, including ciliated columnar, mucin-secreting columnar, transitional, and squamous epithelium. Tailgut cyst has been found in men and women of various ages but is more common in women and is usually associated with middle age. They may be the source of the chronic perirectal symptoms and rarely undergo malignant change, so early diagnosis and accurate evaluation is important. Complete surgical resection should be considered because of a long term risk of malignant change. We report two cases of tailgut cyst.
Early Diagnosis ; Epithelium ; Female ; Humans ; Male ; Middle Aged

PURPOSE: The aim of this study was to compare the film thicknesses of several resin cements as a function of time after mixing and to examine the effect of working time on the film thicknesses. MATERIALS AND METHODS: The film thickness (microm) of 4 resin cements (n=10), 1 composite resin (Panavia F 2.0), 3 self-adhesive resin (Clearfil SA luting, Zirconite, RelyX U200) cements was measured at 20-second intervals after mixing of the cements up to 200 seconds under a load of 50 N. Linear regression was fitted to verify the effect of working time on the film thickness of each cement. Data were compared to the working time recommended by manufacturers using Wilcoxon test (alpha=.05). RESULTS: All of the materials showed a positive linear correlation between the film thickness and working time. There was no statistically significant difference between the working time based on our results and the values recommended by the manufacturers even though there was a discrepancy between those two values. CONCLUSION: The film thickness of resin cements could increase with the increase of working time. Working time to meet the ISO standard of 50-microm maximum film thickness could be different from the manufacturer's recommended value.
Linear Models ; Resin Cements ; Resins, Synthetic*