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The Chewing Efficiency of Occlusal Stabilization Appliances by Anatomy of the Occlusal Surface
임영관,최충호,김재형,이종욱,김병국,Im, Yeong-Gwan,Choi, Choong-Ho,Kim, Jae-Hyeong,Rhee, Chong-Ouk,Kim, Byung-Gook Korean Academy of Orofacial Pain and Oral Medicine 2005 Journal of Oral Medicine and Pain Vol.30 No.3
Occlusal appliance therapy has been proven to be very useful and effective in reducing signs and symptoms of patients with TMD. However, there are no reports about the masticatory efficiency of the occlusal appliance. The purpose of this study was, first, to investigate the masticatory efficiency of the conventional stabilization appliance experimentally in normal healthy subjects, by comparing it with that of their natural dentition; and, second, to develop a modified stabilization appliance as an attempt to increase masticatory efficiency. Eleven subjects (mean age 25.3 years, range from 23 to 33) participated in this study. Six were men and five were women. They were healthy and had complete or near―complete natural dentition, and did not present with signs or symptoms of TMD. Two kinds of occlusal appliances―the conventional flat maxillary stabilization appliance (i.e., FSA) and a modified maxillary stabilization appliance with additional anatomic structures on its occlusal surface (i.e., ASA)―were made for every subject. Subjects chewed peanuts that were selected as a food to test the three masticatory conditions of the natural dentition, the ASA, and the FSA. The number of chewing strokes was counted during each 1-minute chewing period. Chewed peanut boluses were recovered and their hardness was measured by texture analysis. Statistical tests were performed. The following results were obtained. 1. The masticatory efficiency of the FSA was 38.6 percent that of the natural dentition. The efficiency of the ASA was 78.2 percent that of the natural dentition. 2. The number of chewing strokes in the natural dentition condition was measured to be 1.5 strokes per second. It decreased to 90 percent in the ASA and FSA conditions. These results indicate that the ASA could serve an improved masticatory capacity as well as its therapeutic effects in TMD. A clinical application of the ASA should be considered to extend the management of TMD patients.
한국어판 PADUA 강박척도 : 신뢰도와 타당도 Reliability and Validity
박제민,김명정,김성곤,박재흥,강철중,김병철,전명호,김재형,양구범 釜山大學校 醫科大學 精神科學敎室 1998 釜山精神醫學 Vol.7 No.-
This study reports the psychometric peroperties and factorial structure of a Korean version of the Padua Inventory (PI) in clinical (35 patients withobsessive-compulsive disorder and 66 with other psychiatric disorders) and non-clinical (458 including 120 undergraduate medical students) samples. The PI total and subscales showed good internal consistency, convergent and known-group validity. Test-retest reliability with interval of one year was superior to that of obsessive-compulsive subscale of SCL-90R. PI scores of non-clinical sample were lower than those reported in western countries, apart from Dutch sample. Principal component analysis on data from whole sample suggested four-factor solutions, which was comparable to that found in other versions of the PI developed in the western cultures. Items asking urges or worries of breaking or stealing things were separated from the factor 'urges and worries of losing control over motor behavior'. Factor analysis on data from non-clinical sample revealed five-factor solution: being contaminated, checking behaviors, doubting, worries of disasters, and ruminations. The first two factors were very same as the western reports, the other three were comparable to 'impaired control over mental activities', but 'urges and worries of losing control over motor behavior' was not extracted as a separate factor in this study. Needs for cross-cultural study including other Asian countries arise to confirm lower PI scores and different factor structures in this sample reflects Korean-specific or Asian-specific culture.