STATEMENT OF PROBLEM: Titanium-Nickel alloy might be used in various prosthetic restorations since it has a unique property such as super-elasticity and high fatigue resistance. However, little is known about the casting ability of this alloy. PURPOSE: This in vitro study compared the casting accuracy and the porosity made with different investments and various sprue designs to ascertain what casting condition would be better for the fabrication of Ti-Ni cast restorations. MATERIAL AND METHODS: A total of 70 Ti-Ni alloy crowns were made and divided into 7 groups of 10 copings on a metal master die. For measuring the effect of the sprue numbers, two groups with one and two 8-gauge sprues were compared. Moreover, the results of the conventional sprue and the double thickness sprues were compared. Three investments were used; carbon free phosphate bonded investment, titanium investment and gypsum bonded investment. The cast restorations were evaluated at 48 points on the entire circumferential margin with a stereomicroscope measuring in micrometers. Each crown was radiographically examined for casting defects and porosity. Data on casting accuracy were analyzed using two-way and Post hoc Scheffe's comparison to determine whether significant differences existed at the 95% confidence level. Student-Newman-Keuls test were performed to identify significant differences in the number of voids. RESULTS: The double sprueing group and double thickness group had significantly less marginal discrepancy than the single sprueing group (P<.05 and P<.01, respectively). The castings with phosphate bonded investment showed the least marginal discrepancy and the smoothest surface. The castings invested in the gypsum bonded investment had the greatest gaps in margin and the largest failure rate. The double sprueing group and phosphate bonded investment group had significantly smaller void numbers and smaller void size than the other groups. CONCLUSION: Within the limitations of this in vitro study, the casting accuracy of the groups using thicker, double sprue design and the phosphate bonded investment was significantly superior. Moreover, void number and size were less than other groups.
Alloys ; Calcium Sulfate ; Carbon ; Celiac Disease ; Crowns ; Fatigue ; Investments ; Porosity* ; Titanium

A Histologic finding of the Cutis marmorata telangiectatica congenita( CMTC) is non-specific, but dilated capillaries and increased number of vessels are often observed. Capillary hemangioma, mostly represented by strawberry nevus, may show various clinical manifestations. We report a case of Cutis marmorata telangiectatica congenita, which may be an unusual clinical presentation of capillary hemangioma.
Capillaries* ; Fragaria ; Hemangioma, Capillary* ; Nevus

Chromomycosis is a chronic localized infection of the cutaneous and subcutaneous tissues and characterized by verrucoid, ulcerated and crusted lesions with sclerotic margins. It histologically show confluent granulomatous nodules containing large giant cells of the foreign body type. The organisms are differ from other yeastform fungi by the characteristic chestnut-brown color and by the septate division. A case of 51 year old woman with chromomycosis at submental area is presented.
Female ; Humans

Statement of problem. Relatively low success rate of root analogue implant system was supposed to be due to the time duration between extraction and implant installation. The use of three-dimensional computer tomography and the reconstruction of objects using rapid prototyping methods would be helpful to shorten this time. Purpose. This aim of this study was to evaluate the application possibility of the 3-dimensional computer tomography and the rapid prototyping to root analogue implants. Material and methods. Ten single rooted teeth were prepared. Width and height of the teeth were measured by the marking points. This was followed by CT scanning, data conversion and rapid prototyping model fabrication. 2 methods were used; fused deposition modelling and stereolithography. Same width and height of this models were measured and compared to the original tooth. Results. Fused deposition modeling showed an enlarged width and reduced height. The stereolithography showed more exact data compared with the fused deposition modelling. Smaller standard deviation were recorded in the stereolithographic method. Overall width error from tooth to rapid prototyping was 7.15% in fused depostion modelling and 0.2% in stereolithography. Overall height showed the tendency of reducing dimensions. Conclusion. From the results of this study, stereolithography seems to be very predictable method of fabricating root analogue implant.
Tomography, X-Ray Computed ; Tooth

There have been controversies on the rationale, surgicl indication, technique and results of meniscus repair.. Authors comparatively studied 100 cases of meniscus injury in 88 patients (arthroscopic total menisectomy: 16 cases, arthroscopic partial menisectomy: 68 cases, arthroscopic meniscus suturing: 16 cases) from February 1985 to March 1992. The results were as follows: 1. Male (61.4%) was much more affected than female. 2. The third decade group was most commonly affected and the most common causes was sports injury (43.2%) 3. The lateral meniscus was more injured (71%), than the medial (29%) 4. In arthroscopic finding, longitudinal tear (37%) was the most common. 5. According to the Tapper and Hoover's criteria, satisfactory result was 56.3% in arthroscopic meniscus repair group.
Athletic Injuries ; Female ; Humans ; Knee ; Male ; Menisci, Tibial ; Tears

Botulium toxin A has been used therapeutically in humans for over 20 years for a variety of medical indications. Some wrinkle and unsightly facial expressions are due to hyperkinetic muscle. For the past year, the author has injected it for variant purpose, so we describe the our experience with the variant extended use of the toxin including correction for just dynamic wrinkle, used with subperiosteal face lifting or peeling, post-traumatic twitching, and facial paralysis and relevant anatomy are discussed. Also we have another concept about muscle anatomy which have superficial and deep portion. The superficial portion is for harmonious action with SMAS during facial expression, which is also related to fine wrinkle, and the deep portion play role gross movement. Botulium toxin is safe and effective in varient field without complication. Its use is associated with a high degree of patient and physician satisfaction.
Exotoxins* ; Facial Expression ; Facial Paralysis ; Humans ; Rhytidoplasty

Gastric lipomas are rare benign submucosal tumors which can present the diagnostic and therapeutic problems. The preferred treattment is observation or local excision. Since preoperative diagnosis and differentation from malignant tumors can be difficult by use of the conventional diagnostic modalities such as X-ray or endoscopic examination, patients are sometimes subjected to more extensive surgical procedures than warranted. As to the diagnosis of submucosal tumors of the upper digestive tract, a newly developed diagnostic modality of endoscopic ultrasonography(EUS) allows us to visuialize the structures underlying the gastrointestinal wall in a noninvasive maneuver, and can contribute to make differential diagnosis and decision of management. Strip biopsy is an endascopic tissue resection technique which permits resection of both mucosal and submucosal tissue regardless of the morphological type of the lesion, because the submucosal saline injections during the procedures make the flat or depressed lesions to be elevated. Now, we report a 56-yr-old female which had a Yamada type I polypoid gastric submucosal lipoma in the antrum, which could be performed the different diagnosis and successful endoscopic removal by endoscopic ultrasonography and strip biopsy.
Biopsy* ; Diagnosis ; Diagnosis, Differential ; Endosonography ; Female ; Gastrointestinal Tract ; Humans ; Lipoma*

A new method for combining ultrasonography snd endoscopy, endoscopic ultrasonography (EUS), was developed to improve the diagnostic accuracy of ultrasound by direct image of the target lesion via the gastrointestinal lumen. EUS has the unique ability to provide clear sonographic images of the wall structure of the stomach. This capability can be ultilized in assessing the depth of cancer invasion of the stomach by identifying which layer the ultrasonographic change extends to. However, the depressed types of early gastric cancer(EGC) are often accompanied by ulcerative change in the tumor foci. And the ultrasonographic picture is also influenced by the ulcerative change. (continue...)
Endoscopy ; Endosonography* ; Stomach ; Stomach Neoplasms* ; Ulcer ; Ultrasonography

To determine the most effective and tolerable method of preparation with Golytely for colonoscopy, 141 consecutive cases were randomly allocated to drink either 2,000cc(74 cases, Group I) or 4,000cc(67 cases, Group 2), with infusion rate of 1,000cc/h. The reaults were as follows. 1) The rates of effective colonic clearance in group 1 and group 2 was 94.6% and 94.0%, respectively. There is no significance difference between two groups. 2) There was no significant difference in the ingested volume until the first bowel movement and the time required for rectal efflunt to be clear between two groups. 3) Patient acceptance was higher in group 1 than in group 2. 4) Side effects were less noticed in group 1 than group 2, and incraased in body weight (average 0.8 kg) after ingestion of Golytely was observed only in group 2.
Body Weight ; Colon ; Colonoscopy* ; Eating ; Humans ; Therapeutic Irrigation*

Non-operative palliative treatment for malignant colonic obstruction can sometimes be accomplished by the insertion of anorectal tube, endoscopic balloon dilation or endoscopic laser therapy. But these methods have some disadvantages, such as limitaation of activity, need of repetitive treatment and high-risk of perforation. Endoscopic prosthesis is generally accepted as a safe, effective palliative treatment for malignant esophageal stricture, because this method has no above disadvantages. Neverthless, there is only a few experence with endoecopic prosthesis in malignant colorectal stricture over the world. We report two cases which were safely, effectively performed endoscopic prosthesis in palliative treatment for their malignant rectal strictures.
Colon ; Constriction, Pathologic* ; Esophageal Stenosis ; Laser Therapy ; Palliative Care ; Prostheses and Implants*