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백대일,전정동,전우기,이성우,한창열,박수성 인제대학교 1984 仁濟醫學 Vol.5 No.4
Detecting a cholesteatoma within complicated temporal bone by simple mastoid views is desirable but any single conventional projection appears to have reached the limit of its capacity. Several simple mastoid views must be combined to delineate cholesteatoma. Author reviewed various projections of simple mastoid views in 37 cases of cholesteatomas surgically proven at Paik Hospital Inje Medical College from 1981 to 1983 in order that diagnostic value of each view could be determined. The results were as fellows: 1.Detection rate of cholesteatoma with single projection only was followings: 75% with Owen view, 60% with Towne view, 59% with Law view, 44% with Stenvers view and 33% with Transorbital magnification view. 2.Detection rate of cholesteatoma with combined projections was followings: 60% with Law, Stenvers and Towne view combination, 83% with Law, Owen and Transorbital magnification view combination. 3.Cholesteatoma involved attic in 87%, antrum in 59% and middle ear in 33%, and the combined involvement(57%) was rather frequent than single involvement (43%) 4.The mastoid air cells were poorly pneumatized in cholesteatoma, ie. sclerotic pneumatization in 81% and diploic pneumatization in 14%.
백대일,문혁수,김종배,유은희 대한구강보건학회 1999 大韓口腔保健學會誌 Vol.23 No.1
Toothbrushing has increased, as the concern about oral health has been on the growth in people. As an adverse effect of tooth brushing, prevalance of cervical abrasion has been increased. In this connection, it will be increased in the next century, The need for setting up the strategy on the prevention of cervical abrasion is comming up rapidly. The purposes of this study are to evaluate the prevalence, distribution and severity of cervical abrasion by teeth and age as one of the base-line data. 1,416 persons aged 15 and more selected by multi-stage clustering were surveyed dental examintion with Paik's criteria on cervical abrasion in 1995 in Korea. The results obtained are as follows : 1. Cervical abrasion is the most prevalent in 1st premolar, and the prevalence of cervical abrasion has been decreased in the order of 2nd premolar, canine and 1st molar. 2. The severity of cervical abrasion has been increased, as the age increased. 3. Cervical abrasion could be already detected in the age of 15. 4. School-based toothbrushing drill program should be developed in primary and secondary school for preventing cervical abrasion in permanant teeth. 5. For preventing cervical abrasion in permanant teeth, undergraduate dental students and family dentists should be trained in the education on the individual-based tooth brushing in the clinical training course in dental college and in the continuous education course for dentist.