STATEMENT OF PROBLEM: Fracture and dimensional change of an acrylic resin denture are a rather common occurrence. PURPOSE: The purpose of this study was to compare differences in dimensional changes and flexural strength of separate maxillary complete dentures after immediate deflasking by injection molding and conventional compression processing. MATERIAL AND METHOD: To evaluate dimensional stability, the maxillary dentures were fabricated by using different materials and methods. Lucitone 199(Dentsply Trubyte, york, pennsylvania, USA) and Vertex(Dentimex, zeist, Netherlands) were used as materials. Compression and injection packing methods were used as processing methods. The impression surface of the dentures was measured by 3D Scanning System(PERCEPTRON, USA) and overlapped original impression surface of the master cast. To evaluate flexural strength, resin specimens were made according to the different materials, powder/liquid ratio and processing methods. Flexural strength of the complete resin specimens (64mm*10mm*3.3mm) were measured by INSTRON 467.(INSTRON, England) The data was analyzed by ANOVA, t-test and Tukey test.(p<.05 level of significance) RESULT: The results were as follows: 1. There was no significant differences between master model and denture base for each group in overall dimensional changes. 2. Palatal area was more stable than flange or alveolar area in dimensional stability. but, there was no significant differences among each area. 3. Materials and power/liquid ratio had an effect on flexural strength.(p<.05) Especially materials was most effective.(p<.05) 4. Lucitone 199(powder/liquid ratio followed by manufacturer's direction) showed higher flexural strength than Vertex. CONCLUSION: Dimensional stability or flexural strength are affected by materials rather than packing techniques.
Denture Bases ; Denture, Complete* ; Dentures ; Fungi* ; Pennsylvania

BACKGROUND AND OBJECTIVES: The olfactory identification test has been used in clinical assessment of olfactory ability for the following reasons: it is fast, it yields results compatible to a threshold test, and it gives a picture of how well the patient can deal with odors of everyday life. However, items in UPSIT (University of Pennsylvania Smell Identification Test)and CCCRC (Connecticut Chemosensory Clinical Research Center)identification test which are widely used in the world are selected for western people. Accordingly, these items in the tests are not appropriate for Koreans of different cultural background. MATERIALS AND METHODS: For the selection of proper items for the olfactory identification test, 42 natural odors familiar to Koreans were applied to 40 normal subjects and 40 patients with decreased sense of smell without sinonasal diseases. Among 42 items, 16 items with high identifiability and familiarity were chosen according to the results of test-retest in normal subjects. RESULTS: The results of olfactory identification test using 16 selected items showed high correlation with olfactory threshold. CONCLUSION: These 16 items can be used for an olfactory identification test for Koreans.
Humans ; Odors ; Pennsylvania ; Recognition (Psychology) ; Smell

BACKGROUND AND OBJECTIVES: The development of a l2-item Cross-Cultural Smell Identification Test (CC-SIT) was based upon items from the University of Pennsylvania Smell Identification Test (UPSIT), The selected CC-SIT items were familiar to most persons from American, European, and Asian cultures. Since there were no reports about its clinical validity for Koreans, we evaluated its identifiability in this study. MATERIALS AND METHODS: The CC-SIT were administered to 30 normal subjects and 32 patients with decreased sense of smell, and compared with those of the Korean K-SIT and buthanol threshold test (BTT), items of which many Koreans are familiar with. RESULTS: In the normal group, the mean percent-correct scores of CC- SIT and K-SIT were 87.5+/-7.8% and 90.5+/-9.7%, respectively. In the patient group, the scores were 48.2+/-14.1 and 49.6+/-10.2%, respectively. The results of CC-SIT showed a high correlation with the K-SIT (gamma=0.822, p < 0.001). CONCLUSION: The CC- SIT can be used as an olfactory identification test for Koreans.
Asian Continental Ancestry Group ; Humans ; Pennsylvania ; Smell*

PURPOSE: This study was aimed to compare the radiopacity of four kinds of currently available resin based implant cements using digital radiography. MATERIALS AND METHODS: Four resin-based implant cements ((Estemp Implant(TM) (Spident, Incheon, Korea), Premier(R) Implant (Premier, Pennsylvania, USA), Cem-Implant(TM) (B.J.M lab, Or-yehuda, Israel), InterCem(TM) (SCI-PHARM, California, USA)) and control group (Elite Cement 100(TM) (GC, Tokyo, Japan)) were mixed and cured according to the manufacturer's instructions on the custom made split-type metal mold. A total of 150 specimens of each cement were prepared and each specimen (purity over 99%) was placed side-by-side with an aluminum step wedge for image taking with Intraoral X-ray unit (Esx, Vatech, Korea) and digital X-ray sensor (EzSensor, Vatech, Korea). For the evaluation of aluminum wedge equivalent thickness (mm Al), Image J 1.47 m (Wayne Rasband, National Institutes of Health, USA) and Color inspector 3D ver 2.0 (Interaktive Visualisierung von Farbraumen, Berlin, Germany) programs were used. RESULT: Among the 5 cements, Elite cement 100(TM) (control group) showed the highest radio-opacity in all thickness. In the experimental group, InterCem(TM) had the highest radio-opacity followed by Premier(R) Implant Cement(TM), Cem-Implant(TM) and Estemp Implant(TM). In addition, InterCem(TM) showed radio-opacity that met the ISO No. 4049 standard in all the tested specimen thickness. Cem-Implant on 0.5 mm thickness showed radiopacity that met the ISO No. 4049 standard. CONCLUSION: Among the implant resin-based cements tested in the study, Premier(R) Implant Cement and Estemp Implant(TM) did not show appropriate radio-opacity. Only InterCem(TM) and Cem-Implant(TM) 0.5 mm specimen had the proper radiopacity and met the experiment standard.
Aluminum ; Berlin ; California ; Fungi ; Incheon ; National Institutes of Health (U.S.) ; Pennsylvania ; Peri-Implantitis ; Radiographic Image Enhancement

The sense of smell is one of the essential tools for all living things to survive. With recent increase in diseases associated with olfactory dysfunction, the evaluation of olfactory function aims to shed light on the understanding and assessment of the human olfactory system. The methods for assessing the olfactory function are largely divided into electrophysiological and psychophysical methods. The psychophysical inspections such as University of Pennsylvania Smell Identification Test (UPSIT), The Sniffin' Stick, and T & T Olfactometer are methods mostly based on questionnaires or simple apparatus. Those have been generally used in clinical and research field due to their relatively short examination time and low cost. The electrophysiological tests evaluate olfactory function based on objective measurements like biosignals and medical imaging. Compared to the psychophysical methods, they comparably have higher reliability and are possible to assess more specific diagnosis. However, the system configuration seems to be more complicated. In this paper, we review the overall evaluation methods of olfactory functions and suggest complementary points to improve conventional technologies.
Diagnosis ; Diagnostic Imaging ; Humans ; Olfaction Disorders ; Olfactometry ; Pennsylvania ; Smell* ; Surveys and Questionnaires

PURPOSE: To determine the outcome of the Bankart procedure through lateral capsulotomy approach by objective and subjective evalua-tion in traumatic anterior instability of the shoulder. MATERIALS AND METHODS: Thirty-seven patients with traumatic anterior instability, who underwent the Bankart procedure through lateral capsulotomy, were investigated with an average follow-up of 23 months. Every effort was made to maximize the range of motion by repairing the Bankart lesion and closing the capsulotomy to allow as much external rotation as feasible. In 18 cases, superior capsular shift (13) or Neer 's capsular shift (5) were combined to deal with capsular redundancy. Outcome was assessed using range of motion, Pennsylvania Shoulder Function Score, pain, residual symptom and satisfaction. RESULTS: Recurrence of instability was not encountered. Function score increased significantly and all patients were satisfied with the results. However, 8 patients (22%) complained of feeling apprehensive about sports activities. CONCLUSION: The Bankart procedure through lateral capsulotomy appears to minimize unwanted external rotation limitations and enable capsular redundancy to be dealt with adequately.
Follow-Up Studies ; Humans ; Pennsylvania ; Range of Motion, Articular ; Recurrence ; Shoulder* ; Sports

OBJECTIVES: The aim of this prospective study is to investigate predictors estimating relapse in Korean alcohol-dependent patients using variables like alcohol history, drinking craving, treatment motivation and insight. METHODS: Alcohol dependent patients(N=48) who completed questionnaires about sociodemographic variables and drinking history, Timeline Follow-Back(TLFB), Obsessive-Compulsive Drinking Scale(OCSD), Alcohol Urge Questionnaire(AUQ), Pennsylvania Alcohol Craving Scale(PACS), University of Rhode Island Change Assessment(URICA), Hanil Alcohol Insight Scale(HAIS) were followed-up for 24weeks. Subjects who drank heavily(5 standard drinking or more/day) or were not followed up anymore were classified as the relapse group. We used logistic regression analysis with backward elimination of SPSS PC+11.5 to investigate relapse estimate predictors. RESULTS: Average drinking amount per drinking day for last 1 year and HAIS score were predictors of relapse in alcohol-dependent patients. CONCLUSIONS: Our findings suggest that therapist should give more attention to alcohol-dependent patients who had more drinks per drinking day for last 1 year and had lower insight level.
Alcoholism ; Drinking ; Follow-Up Studies* ; Humans ; Logistic Models ; Motivation ; Pennsylvania ; Prospective Studies ; Recurrence* ; Rhode Island

OBJECTIVE: To determine risk factors associated with recurrence in patients with high intermediate risk (HIR) endometrioid adenocarcinoma. METHODS: A retrospective analysis of patients with HIR endometrioid adenocarcinoma who underwent hysterectomy, bilateral salpingo-oophorectomy, with or without pelvic/para-aortic lymphadenectomy at the University of Pennsylvania between 1990 and 2009 was performed. RESULTS: A total of 103 women with HIR endometrial cancer were identified. Multivariable analysis revealed that > or =2/3 myometrial invasion (HR, 4.79; p=0.010) and grade 3 disease (HR, 3.04; p=0.045) were independently predictive of distant metastases. The 5-year distant metastases free survival (DMFS) for patients with neither or one of these risk factors was 89%, and the 5-year DMFS for patients with both risk factors was 48% (p<0.001). CONCLUSION: Patients with both grade 3 disease and deep third myometrial invasion have a high risk of distant metastases. Identifying these patients may be important in rationally selecting patients for systemic therapy.
Carcinoma, Endometrioid ; Endometrial Neoplasms ; Female ; Humans ; Hysterectomy ; Lymph Node Excision ; Neoplasm Metastasis ; Pennsylvania ; Recurrence ; Retrospective Studies ; Risk Factors

OBJECTIVE: To determine risk factors associated with recurrence in patients with high intermediate risk (HIR) endometrioid adenocarcinoma. METHODS: A retrospective analysis of patients with HIR endometrioid adenocarcinoma who underwent hysterectomy, bilateral salpingo-oophorectomy, with or without pelvic/para-aortic lymphadenectomy at the University of Pennsylvania between 1990 and 2009 was performed. RESULTS: A total of 103 women with HIR endometrial cancer were identified. Multivariable analysis revealed that > or =2/3 myometrial invasion (HR, 4.79; p=0.010) and grade 3 disease (HR, 3.04; p=0.045) were independently predictive of distant metastases. The 5-year distant metastases free survival (DMFS) for patients with neither or one of these risk factors was 89%, and the 5-year DMFS for patients with both risk factors was 48% (p<0.001). CONCLUSION: Patients with both grade 3 disease and deep third myometrial invasion have a high risk of distant metastases. Identifying these patients may be important in rationally selecting patients for systemic therapy.
Carcinoma, Endometrioid ; Endometrial Neoplasms ; Female ; Humans ; Hysterectomy ; Lymph Node Excision ; Neoplasm Metastasis ; Pennsylvania ; Recurrence ; Retrospective Studies ; Risk Factors

OBJECTIVE: Tobacco consumption among patients with schizophrenia has been investigated extensively in western countries, but there is a dearth of studies in India, where socio-economic and cultural variables are different. This study aims to investigate the patterns of tobacco consumption among schizophrenia patients compared with their non-psychotic siblings. METHODS: Consenting, successive male outpatients diagnosed with schizophrenia (n=100, DSM-IV criteria), and their non-psychotic brothers (n=100) were compared. Following a structured diagnostic interview, detailed information about tobacco consumption (including smokeless tobacco) was obtained using the Fagerstrom Test for Nicotine Dependence for smoked tobacco, and FTND-smokeless tobacco. The University of Pennsylvania Computerized Neurocognitive battery (CNB) was administered to a sub-group of patients (n=48). RESULTS: Schizophrenia patients initiated tobacco use at a significantly earlier age than their brothers, but there was no significant difference with regard to type, quantity or frequency of tobacco use (smoke or smokeless varieties). Patients who consumed tobacco had significantly higher positive symptom scores compared with non-users (p=0.043). There were no significant differences between nicotine dependent and non-dependent patients with regard to CNB domains except attention. CONCLUSION: Patterns of tobacco consumption were similar among schizophrenia patients and their non-psychotic brothers. Tobacco use was associated with increased positive symptom scores, but there were no significant differences in cognitive measures among nicotine dependent and non-dependent patients.
Diagnostic and Statistical Manual of Mental Disorders ; Humans ; India ; Lobeline ; Male ; Nicotine ; Outpatients ; Pennsylvania ; Schizophrenia ; Siblings ; Smoke ; Tobacco ; Tobacco Use Disorder