浙江医学教育
浙江醫學教育
절강의학교육
Zhejiang Medical Education
2015年
6期
17-20
,共4页
沈燕青%胡赛%孔卓玲%傅柏平
瀋燕青%鬍賽%孔卓玲%傅柏平
침연청%호새%공탁령%부백평
标准化预备%聚合角%测量
標準化預備%聚閤角%測量
표준화예비%취합각%측량
tooth preparation%convergence angle%measurement
目的：口腔医学本科生临床前技能培训实验中，对上颌中切牙金属烤瓷冠标准化预备后的基牙，进行预备量的测量，并计算近远中轴向聚合角。方法：本班学生总数11人，要求学生在教学头模上先制作硅橡胶印模，再标准化预备1颗右上颌中切牙（人工牙），然后借助硅橡胶印模制作预备牙齿的临时冠，使用游标卡尺间接测量临时冠各轴面的预备厚度，记录并求得平均值数据；通过在牙备后的基牙各轴面及边缘嵴上选取合适的测量点，运用反三角函数计算出近远中轴向聚合角，记录最大值、最小值，并求得上四分位数（P75）、中位数及下四分位数（P25）。结果：牙体预备量的测量值：切缘预备量恰当；唇面、舌面、颈缘预备量不足；近远中邻面轴向聚合角过大。结论：学生一般较易掌握牙齿切端的磨除，不易掌握牙齿深度（厚度）的磨除量和轴向聚合角的大小。该测量方法可作为本科生临床前技能培训中评判标准化牙体预备能力的一项指标。
目的：口腔醫學本科生臨床前技能培訓實驗中，對上頜中切牙金屬烤瓷冠標準化預備後的基牙，進行預備量的測量，併計算近遠中軸嚮聚閤角。方法：本班學生總數11人，要求學生在教學頭模上先製作硅橡膠印模，再標準化預備1顆右上頜中切牙（人工牙），然後藉助硅橡膠印模製作預備牙齒的臨時冠，使用遊標卡呎間接測量臨時冠各軸麵的預備厚度，記錄併求得平均值數據；通過在牙備後的基牙各軸麵及邊緣嵴上選取閤適的測量點，運用反三角函數計算齣近遠中軸嚮聚閤角，記錄最大值、最小值，併求得上四分位數（P75）、中位數及下四分位數（P25）。結果：牙體預備量的測量值：切緣預備量恰噹；脣麵、舌麵、頸緣預備量不足；近遠中鄰麵軸嚮聚閤角過大。結論：學生一般較易掌握牙齒切耑的磨除，不易掌握牙齒深度（厚度）的磨除量和軸嚮聚閤角的大小。該測量方法可作為本科生臨床前技能培訓中評判標準化牙體預備能力的一項指標。
목적：구강의학본과생림상전기능배훈실험중，대상합중절아금속고자관표준화예비후적기아，진행예비량적측량，병계산근원중축향취합각。방법：본반학생총수11인，요구학생재교학두모상선제작규상효인모，재표준화예비1과우상합중절아（인공아），연후차조규상효인모제작예비아치적림시관，사용유표잡척간접측량림시관각축면적예비후도，기록병구득평균치수거；통과재아비후적기아각축면급변연척상선취합괄적측량점，운용반삼각함수계산출근원중축향취합각，기록최대치、최소치，병구득상사분위수（P75）、중위수급하사분위수（P25）。결과：아체예비량적측량치：절연예비량흡당；진면、설면、경연예비량불족；근원중린면축향취합각과대。결론：학생일반교역장악아치절단적마제，불역장악아치심도（후도）적마제량화축향취합각적대소。해측량방법가작위본과생림상전기능배훈중평판표준화아체예비능력적일항지표。
Objective] Aftermaxillary central incisors were normatively prepared for metal ceramic crowns by undergraduate stomatology students in the pre -clinical practical skills training , the tooth preparation and the thickness of temporary crowns were measured for the measurement of the reduction of tooth preparation and calculation of the mesio -distal convergence angle of the tooth preparation .[Method] Eleven students took part in the investigation .After standard artificial teeth were set in the head simulators ,heavy body silicon impression materials were homogeneously kneaded to cover two maxillary central incisors and a maxillary lateral incisor .Each student was asked to normatively prepare a maxillary central incisor ,and to make a tempo-rary crown via silicon impression . After the tooth preparation and the thickness of the temporary crowns were measured by vernier calipers ,the medians ,and lower ,upper quartiles(P25 ,P75)were obtained and the mesio -distal convergence angles were calculated via inverse trigonometric function .[Result]The incisal reductions were appropriate ,the facial and the linqual re-ductions ,and the gingival margin were not enough prepared . The degrees of the mesio -distal convergence angle were too large .[Conclusion]Students easily learnedto prepare the incisalreductions ,however ,they were not easily to prepare the depth (the thickness) of the tooth reducitons and the mesio -distal convergence angle .This exploratory experiment can be used to judge the students’ ability of tooth preparation .
