Results:In normal occlusion,the size of cuspid and bicuspid group was correlated with that of mandibular incisor group in accord with the principle of Moyers prediction.

結(jié)果：正常的尖牙亚洲成熟、雙尖牙組與下切牙組高度相關(guān)99成年小黄片，符合Moyers預(yù)測(cè)機(jī)理，但錯(cuò)的尖牙国产一级A片免费网在线观看、雙尖牙組一般與同牙列的切牙加第一磨牙組高度正相關(guān)性交黄片国产。

Results The incidence of wedge-shaped defects reached 97.3 %,and the frequency of involved teeth was:first premolar,second premolar,first molar,cuspid.

結(jié)果 該組老年人楔狀缺損的發(fā)病率為97 。3 %人人操人人插人人摸，且隨年齡遞增免费播放人成视频网站；楔狀缺損的好發(fā)部位和缺損程度第一雙尖牙列首位，其次為第二雙尖牙女生精黄色网站，第一磨牙色色色色色色色色色播播；其中第一磨牙比以往人們認(rèn)為的尖牙更好發(fā)楔狀缺損。

Based on the retrosigmoid approach, the suprameatal tubercle and partial petrosal apex were drilled. The CT and the manual measurements were used for determining the extension of the suprameatal tubercle and petrosal apex in three dimensions before and after the resection of them. The exposed field of the middle fossa and superior clivus and the length of the exposed trigeminal nerve were also measured.

經(jīng)乙狀竇后入路開顱免费人成网站视频在线观看，磨除內(nèi)耳道上結(jié)節(jié)和部分巖尖激情性爱国内自拍，采用實(shí)體和CT相結(jié)合的方法測(cè)量?jī)?nèi)耳道上結(jié)節(jié)、巖尖的切除范圍免费av黄色录像免费的黄色录像，記錄內(nèi)耳道上結(jié)節(jié)视频一区二区男人的天堂国产大片免费、巖尖切除前后顱中窩、上斜坡的顯露面積和三叉神經(jīng)的顯露范圍自拍偷拍亚洲精品。

The drill point structural parameters of ellipse cone flank grinding are calculated.

計(jì)算了橢圓錐面后刀面刃磨鉆尖的結(jié)構(gòu)參數(shù)一级aa片视频，分析了錐面機(jī)構(gòu)參數(shù)以及刃磨參數(shù)對(duì)鉆尖結(jié)構(gòu)參數(shù)的影響。

(1) The 2% glutaraldehyole pulpotomy has the function of killing bacteria and could cure deep caries and early pulpitis;(2) The curative effects of six months after operation is better than that of three months and of upper jaw is better than that of lower jaw by using 2% glutaraldehyole pulpotomy;(3) The prognosis of 2% glutaraldehyole pulpotomy depends on selecting indication and the patients cooperation in the course of operation;(4) It must be early performed with the root canal therapy that the cases of further developing apicitis, the absorption of root apiex is over 1/3, the pulp necrosis and periapical disease.

(1) 2%戊二醛活髓切斷術(shù)具有殺菌的功能国产日韩欧美主播，對(duì)于深齲及早期牙髓炎可以治愈亚洲欧美国产色图；(2) 2%戊二醛活髓切斷術(shù)治療乳磨牙牙髓炎六個(gè)月后的療效明顯好于三個(gè)月的療效，上頜組療效明顯好于下頜組99久久播放视频；(3) 2%戊二醛活髓切斷術(shù)的預(yù)后取決于適應(yīng)證的選擇及治療過(guò)程中患兒的配合程度日韩三级中文字幕；(4)對(duì)于進(jìn)一步發(fā)展為根尖炎的病例及根尖吸收超過(guò)1/3亚洲欧洲性爱、牙髓壞死和根尖周有病變者，應(yīng)及早行根管治療術(shù)国产精品久久久久精品三级一区。

When the proportion of force to moment is 1∶4.7, the canine will translational move distally. To reinforce anchorage with second molar can prevent anchorage teeth movement mesially during canine distal movement.

要使尖牙平行遠(yuǎn)中移動(dòng)在线看一级片视频软件，遠(yuǎn)中牽引力與力矩的最佳比例為 1∶4.7；將第二雙尖牙www熟女、第一丝袜美女人人摸人人操、第二磨牙連成整體，可減小尖牙遠(yuǎn)中移動(dòng)時(shí)的支抗消耗免费一级无码婬片AA片高潮喷水。

Upper central incisors moved forward and downward together with maxillary, at the same time they upright in the sagittal plane and tip mesially. 3 The occlusion plane rotated clockwise for about 1.5°. 4 The width increasement effect of RME comes from approximately the equal amounts of skeletal and dental expansion. The mode of dental movement was a combination of body and tipping movements of posterior teeth.

結(jié)果：1后牙在寬度方向上為整體移動(dòng)和傾斜移動(dòng)相結(jié)合的移動(dòng)方式免费观看黄色视频，但第一磨牙和第一雙尖牙稍有差別；牙齒和骨對(duì)寬度增加的貢獻(xiàn)各占約1/2免费在线看欧美三级片；2后牙在垂直方向有伸長(zhǎng)的趨勢(shì)偷拍偷窥网；3第一磨牙和第一雙尖牙均向前整體移動(dòng)，軸傾度保持不變欧美国产日韩激情视频；4中切牙整體隨上頜骨前部向前向下移動(dòng)成人无码秒播在线观看视频免费，其牙長(zhǎng)軸發(fā)生直立，軸傾度增加看h片的网站；5上頜平面發(fā)生順時(shí)針旋轉(zhuǎn)亚洲欧美日韩色图。

The clinical characters of oligodontia concluded from this study are following:(1) There is significant difference that more teeth absent and more existent teeth anomalies in patients of oligodontia/S group than in patients of oligodontia/I group, and the peg-shaped upper lateral incisor is the most frequently affected teeth with shape anomaly.(2) Both of the two groups have no significant differences in number of teeth missing between maxilla and mandible as well as that between left and right side.(3) The distribution of teeth missing is bilateral symmetry in both groups, but the frequency of teeth lost are different: excluding the third molar, in oligodontia/I group, the lower second premolar is the most frequently congenitally missing tooth followed by the upper lateral incisor, while in oligodontia/S group, the most frequently missing teeth are mandibular canine and maxillary lateral incisor. Nevertheless, the first molars are the most stable teeth in both groups.(4) In oligodonita/I group, the mean mesiodistal dimensions of all type of existent teeth are significantly smaller than normal value. It is implied that oligodontia is not an isolated phenomenon, but is related to a complex of other dental changes.

對(duì)于口腔多個(gè)恒牙先天缺失的臨床特點(diǎn)有以下初步結(jié)論：(1)綜合征型先天缺牙患者較單純型先天缺牙患者恒牙缺失數(shù)目更多，平均分別為23.9個(gè)和14.9個(gè)免费看的国产区视频，且現(xiàn)存牙齒有更多的形態(tài)異常男女无遮挡性爱视频，分別為7／10例（70％）和6／22例（27.3％），其中最常見(jiàn)的是上頜側(cè)切牙畸形波多野结衣性爱视频；(2)兩種類型的多個(gè)恒牙先天缺失患者的缺牙數(shù)目在上下頜及左右側(cè)之間均無(wú)差別2020精品极品国产色在观看；(3)兩種類型的多個(gè)恒牙先天缺失患者在缺失牙位上均呈對(duì)稱分布，但在具體牙位上有所差異：不計(jì)第三磨牙国产精品免费一区二区久久，單純型先天缺牙最常缺失的牙位是下頜第二雙尖牙88888888视频欧美、其次為上頜側(cè)切牙；而綜合征型先天缺牙最常缺失的牙位是下頜尖牙和上頜側(cè)切牙国产精品99久久精品2020；無(wú)論何種情況可观看的黄色网站，第一磨牙均為牙列中最穩(wěn)定的牙齒；(4)在單純型先天缺牙患者中张津瑜落地窗国贸，現(xiàn)存恒牙的牙冠寬度較國(guó)人正常值偏小精品熟女综合网，差異顯著，提示牙齒形態(tài)與多個(gè)牙先天缺失有一定相關(guān)性欧美日韩色一区二区三区视频。

After bridge insertion, the pontic of fixed bridge re- stored additional force, but the change of stress in the peri- odontium of premolar and molar is very diffierent.

固定橋修復(fù)后橋體承受了增加的載荷久久久久精品三级三级，雙尖牙和磨牙牙周膜應(yīng)力的變化規(guī)律是不相同的，雙尖牙牙周膜應(yīng)力的增加幅度大于磨牙。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外国产精品视频网站免丝袜，作者還分析了一臺(tái)加工中心上的鉆頭刃磨裝置999国产精品欧美久久久久久，提出了一種兩軸合成四平面鉆尖的刃磨理論，并對(duì)其應(yīng)用前景進(jìn)行了初步探討欧美性爱网站在线免费观看，為鉆頭刃磨方法和刃磨機(jī)的研制開辟了一條新的途徑一级A片免费在线。