No abstract available.
Pregnancy Rate* ; Pregnancy* ; Sterilization*

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

BACKGROUND: Methicillin-resistant Staphylococcus aureus(MRSA) is an increasingly common cause of nosocomial infections worldwide. Epidemiologic investigation of MRSA outbreaks and identification of pathways of nosocomial MRSA spread require the ability to distinguish individual MRSA strains. We applied molecular tap ing of the methicillin-resistant determinant (mec) and coagulase typing in the investigation of a nosocomial MRSA infections. METHODS: We randomly selected 79 strains of mecA positive MRSA isolated from patients who visited Dong-A university Hospital from Dec. 1995 to Oct. 1996. Molecular typing of MRSA was performed by comparing the size of the mac-associated hypervariable region amplified by the polymerase chain reaction (PCR). Coagulase typing with type I-VIII antisera was also used for classification of MRSA based on its phenotype. Each isolates were classified by the combination of molecular analyses and coagulase type. RESULTS: The 79 MRSA isolates were grouped Into sin hypervariable legion (HVR) genotypes on the basis of the size of the PGR products. In coagulase typing, the most predominant type was II(46.8%) and type V was not found. Nine strains were not typable. The combination of HVR genotypes and coagulase types showed 23 different types in 79 MRSA Isolates. The strains which were repeatedly isolated from the same patients showed the same HYR genotypes and coagulate types. CONCLUSION: The combination of HVR genotypes and coagulase types is thought to be useful in epidemiolgical Investigation of nosocomial infections caused by MRSA ,because of its simplicity and reproducibility.
Classification ; Coagulase* ; Cross Infection* ; Disease Outbreaks ; Genotype ; Humans ; Immune Sera ; Methicillin Resistance* ; Methicillin-Resistant Staphylococcus aureus* ; Molecular Typing* ; Phenotype ; Polymerase Chain Reaction ; Staphylococcus

No abstract available.

BACKGROUND: Recent DNA polymorphism analysis using numerous DNA markers has been used to determine the parental origin of the extra chromosome 21 in Down syndrome. In this study we used seven dinucleotide repeat polymorphisms on chromosome 21 to characterize a case of rea(21q21q) and to know whether it is consistent with an isochromosome or a true Robertsonian translocation. METHODS: Cytogenetic investigation was done by conventional G banding DNA was extracted from whole blood of a proband and her parents and was amplified by PCR using seven sets of (GT)n repeat dinucleotide markers located on the long arm of chromosome 21 After electrophoresis of the PCR product in polyacrylamide gel and silver staining the parental origin and number of DNA copy were determined by visual comparison of the band intensities within and between individuals. RESULTS: Conventional cytogenetics showed that the proband had a 46.XX.re(21q21q) chromosome pattern. Parental chromosome studies were normal, therefore, the rearrangement was a de novo event. All seven DNA markers showed one or two alleles, demonstrating rea(21q21q) to be an isochromosome. For D21S215 and D21S156 markers both parents were heterozygous and the proband inherited one copy of paternal allele and two copies of maternal allele which both parents did not share. This finding was consistent with a maternally derided isochromosome. CONCLUSION: Use of dinucleotide repeat DNA polymorphisms after PCR amplification will be very useful to detect the parental origin of additional chromosome 21 or rearrangement of chromosome 21 in Down syndrome. Besides employing siltier staining of a PCR product we will be able to avoid using of radioisotopes and apply to clinical laboratory diagnosis.
Alleles ; Arm ; Chromosomes, Human, Pair 21 ; Clinical Laboratory Techniques ; Cytogenetics ; Dinucleotide Repeats* ; DNA ; Down Syndrome ; Electrophoresis ; Genetic Markers ; Humans ; Isochromosomes ; Parents ; Polymerase Chain Reaction ; Radioisotopes ; Silver Staining

No abstract available.
Adenocarcinoma* ; Diverticulum* ; Female* ; Humans ; Metaplasia*

Hemosiderosis is a disorder characterized by deposits of hemosicerin in multiple organs without organ dysfunction or injury. The color of the skin becomes brown, espeially on sun exposured areas. Mucous mernbranes are also affected in up to 5-25% of cases. A 43-year-old woman visited our clinic due to generalized brown colotation of her skin, including conjunct we and oral mucous mernbrane which she had had for 10 months. She had been treated with multiple he nodialysis combined with periodic transfusion for renal failure 3 times a month during the last 5 yeadrs Her plasma ferrit in level was elevated markedly and TIBC decreased, but cortisol and ACTH levels were within normal limits, Histopathologic findings of the neck skin showed hyperpigmentation of basal layer and deposition of brown pigment wrthin and around the sweat glands. In Fontana-Masson stain, the lower epidermis showed a massive deposition of melanin. Prussian blue stain revealei hemosiderin within snd around, the sweat glands. Hemosiderin could also be noticed on specirnens of thliver biopsy. The patient improved progressively after the rstriction of trasnfusion and treatment of renal failure.
Adrenocorticotropic Hormone ; Adult ; Biopsy ; Epidermis ; Female ; Hemosiderin ; Hemosiderosis* ; Humans ; Hydrocortisone ; Hyperpigmentation ; Melanins ; Neck ; Plasma ; Renal Insufficiency ; Skin ; Solar System ; Sweat Glands

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

No abstract available.
Humans ; Infant* ; Infant, Low Birth Weight* ; Infant, Newborn ; Jaundice* ; Phototherapy*

PURPOSE: The objective of this study was to assess the usefulness of a unilateral x-ray of the kidney, ureter and bladder (hemi-KUB), in the place of a full-KUB, in the follow-up of patients treated with extracorporeal shock wave lithotripsy (ESWL), and thereby reduce the radiation exposure for patients. MATERIALS AND METHODS: A total of 111 patients, who underwent ESWL, between March 2000 and July 2002, were enrolled onto the study. Patients with bilateral stones, or who had changed to another treatment model, were excluded. During the follow-up to the ESWL, we used the hemi-KUB method for the collimation of the radiation field. The numbers of hemi-KUBs during the treatment were recorded. The reductions in the exposure to the radiation dose, per patient, were calculated and analyzed according to the sizes and shapes of the stones. The typical doses were: for IVU (6 films), 2.5mSv; full-KUB film, 0.42mSv; and a hemi-KUB film, 0.21mSv. RESULTS: The total reduction in the doses of radiation exposure was 114.45mSv. The radiation doses, per patient, were reduced by a mean of 1.03+/-0.58mSv. The reduction in the dose of radiation exposure correlated well with the stone size (r=0.7082, p<0.05). The mean number of hemi-KUBs (mean reduction dose of radiation exposure), according to the stone size groups: these being 5-9, 10-19 and +/-20mm, were 3.82+/-1.76 (0.80+/-0.37), 6.52+/-2.10 (1.37+/-0.44) and 11.00+/-3.85 (2.31+/-0.81)mSv, respectively (p<0.05). Also, the mean number of hemi-KUBs (mean reduction dose of radiation exposure), according to the stone shapes, typed into I (less organized or lacy), IIa (spiculated), IIb (mulberry), III (round or ovoid) and IV (struvite or staghorn), were 2.77+/-0.85 (0.58+/-0.18), 4.48+/-1.86 (0.94+/-0.39), 4.83+/-1.43 (1.01+/-0.30), 7.54+/-1.36 (1.58+/-0.29) and 8.75+/-3.72 (1.84+/-0.78)mSv, respectively (p<0.05). Using the receiver operating characteristic curve, the cut-off value, of a stone size that could be used to determine the risk group whose radiation exposure exceeding 5mSv (personal permissible dose/year), was 23.52mm, but when using a full-KUB this was 7.97mm. CONCLUSIONS: The use of hemi-KUB is a simple and easy method to reduce the radiation exposure in the follow-up of an ESWL, especially in patients with stones larger than 7.97mm in size, with a round-ovoid or staghorn shape.
Follow-Up Studies* ; Humans ; Kidney* ; Lithotripsy* ; ROC Curve ; Shock* ; Ureter* ; Urinary Bladder*