In spite of continuing efforts by many researchers and clinicians to improve oral functio, the number of patients with missing teeth resulting from periodnotitis and dental caries has not substantially decreased in Korea. Patients who use removable denture have relatively insufficient masticatory function. Various dental implants have been developed by a number of researchers to improve masticatory function. This study was undertaken to investigate the maximum bite force and masticatory function after implantatioin. A total 23 patients were treated with implantation at the Dept. of oral and maxillofacial surgery, college of Dentistry, PUSAN national university. The patient had natural tooth, the contralateral sides had implant-supported prostheses. The results were follows 1. The maximum bite force was little greater in implant-supported prostheses as 39.7kg than natural tooth as 36.8kg. This is because of the lack of periodontal ligament or inhibitory-reflex mechanism, higher maximal bite force could be expected when teeth are replaced by implants. 2. The maximal bite force is greater on implant-supported prostheses than natural tooth, but the masticatory function is higher at natural tooth. All of the patients who had implant-supported prostheses were comfortable during chewing the food. But, the masticatory function decrease because of psychologic problem and character of Korean food.
Bite Force* ; Busan ; Dental Caries ; Dental Implantation* ; Dental Implants* ; Dentistry ; Dentures ; Humans ; Korea ; Mastication ; Periodontal Ligament ; Prostheses and Implants ; Surgery, Oral ; Tooth

No abstract available.
Arthroplasty ; Femoral Fractures ; Hip

We described a giant chroioangioma of the placenta that caused premature rupture of membranes at 31 weeks of gestation in a 31-year-old primiparous woman and a subsequent neonatal death of the baby. The placental mass, weighing 820 gm and measuring 21.5x15x4.5 cm, was easily shelled out from a edematous 1280 gm-placenta. The mass had a thin fibrous capsule and a solid fibromatous appearance. The infant, weighed 2175 gm, appeared edematous oon the whole body and had Apgar scores of 4 and 5 at 1 and 5 minutes respectively. The baby expired 4 days after birth due to high output cardiac failure and respiratory failure. Postmortem examination revealed markedly dilatated umbilical vein, inferior vena cava and right atrium with patent froamen ovale, congestive hepatosplenomegaly, pulmonary hemorrhages, and meconium aspiration pneumonia. Microscopically, the mass revealed a variety of histologic patterns, reflecting entire spectrums of villous vasculogenesis from loose myxomatous connective tissue and undifferentiated hemangioblastic cell nests to well-developed capillaries with hematopoietic cells in the lumen.
Infant ; Male ; Female ; Infant, Newborn ; Humans

No abstract available.
Enterotoxigenic Escherichia coli*

No abstract available.
Female ; Fibroma* ; Ovary* ; Teratoma*

Two cases of ectopic kidney were reported in conjunction with review of literatures. The ectopic kidneys, measuring 13 cm-,15 cm in length of their ureter, were located between the L3 .and S1. Operative removal of the ectopic kidney disclosed aberrant arteries in their both pole. histological examination revealed normal findings.
Arteries ; Kidney* ; Ureter

No abstract available.
Animals ; Heart* ; Rats* ; Wisconsin*

The concurrence of typical carcinoid admixed with adenocarcinoma of the gastrointestinal tract is a well known but unusual phenomenom that has been reported in the esophagus, stomach, gall bladder, colon and appendix. The amine precursor uptake and decarboxylation (APUD) concept included the idea that neuroendocrine cells of the gastrointestinal tract were dervied from the neural crest by a process of migration during embryogenesis. However the intimate admixture of cells which have morphologic and immunocytochemical properties of both carcinoid tumors and adenocarcinoma suggests that these tumors are derived from a multipotential stem cell showing bidirectional differentiation rather than from unrelated cell lines. The term composite carcinoma-carcinoid tumor is therefore an appropriate designation for these neoplasms. We report a case of composite carcinoma-carcinoid tumor of the stomach in a 38 year-old female with brief review of literature.
Female ; Humans ; Adenocarcinoma

The midface are bounded by a line connecting the two zygomaticofrontal suture, passing through the frontomaxillary and frontonasal suture, and limited below by the occlusal plane of maxillary teeth. Midface fractures include fractures affecting the maxilla, the zygoma, and the nasoorbital ethmoid complex. Midface fractures can be classified as LeFort 1, II, III fractures, sygomaticomaxillary complex fractures, zygomatic arch frationctures, or nasoorbital ethmoid fractures. These injuries may be isolated or occur in combine. And sort tissue injuries to the facial structures are commonly encountered in the treatment of midface fractured patient. Soft tissue wounds may be limited to the superficial structures, but more serious injuries may extend to involve anatomic structures such as the sensory and motor nerves of the face; the parotid, or nasolacrimal glands or ducts ; or the dentoalveolar structures. Especially, these fractures are combined with the orbit, brain injuries and skull base fractures. This is to report the incidence, causes, criteria, complication and treatments of patients who visited our department for midface fracture, for last 10 years.
Brain Injuries ; Dental Occlusion ; Humans ; Incidence ; Maxilla ; Orbit ; Skull Base ; Sutures ; Tooth ; Wounds and Injuries ; Zygoma ; Zygomatic Fractures

BACKGROUND: The aim of this study is to define the cardioprotective effects (functional and metabolic) of newly developed DelNido cardioplegic solution (containing plasma solution, mannitol, magnesium and lidocaine). MATERIAL AND METHOD: This study assessed the function of rat hearts after itermittent infusion of DelNido cardioplegia with different preserving methods(Air or Icebox) for 2hours and perfusing the hearts on a Langendorff apparatus. Heart rate, left ventricular developed pressure (LVDP) and coronary flow, were measured at pre-ischemic, post-reperfusion 15min, 30min and 45min. Coronary flow was standardized to dry heart weight. Each weight was weighted to calculate water content. Creatine kinase-MB isoenzyme release was measured and ultrastructural assessment was done with electron microscopes. DelNido group was better than St, Thomas group and Icebox group was better than Room-air group. CONCLUSION: DelNido cardioplegia have better myocardial protective effects than St. Thomas cardioplegia when they were preserved in the Room-air. But we can not tell the difference between Delnido cardiplegia with Air preserving method and St. Thomas cardioplegia with Icebox.
Animals ; Cardioplegic Solutions ; Creatine ; Heart ; Heart Arrest, Induced* ; Heart Rate ; Magnesium ; Mannitol ; Plasma ; Rats ; Water