METHODS: 27 maxillary second bicuspid teeth with two canals and one isthmus were divided randomly into 3 groups with 9 in each.

27顆根管結(jié)構(gòu)為一個峽部連接2個主根管的離體上頜第二前磨牙亚洲性爱无码精品网站，隨機均分為3組欧日韩XX视频在线观看网站，分別采用3種處理方式進行倒預(yù)備。

Abstract〕Objective:To study the tooth size correlation between permanent cuspid and bicuspid group and other teeth groups in malocclusion.

摘要〕 目的：研究錯欧美熟妇XXXX片、正常的尖牙97超碰,人摸人人人澡人人、雙尖牙組與其它組牙的相關(guān)性，為尖牙全色色网视频、雙尖牙組的預(yù)測提供科學(xué)依據(jù)天天夜碰日日摸日日澡。

METHODS: A total of 36 patients from the Affiliated Hospital of Guilin Medical College between September 2003 and August 2006 were treated with OPAK system of 0.022 inch straight wire appliance to pull out four permanent teeth of first bicuspid in symmetrical order.

選擇2003-09/2006-08在桂林醫(yī)學(xué)院附屬醫(yī)院進行口腔正畸治療，雙側(cè)對稱拔除四顆第一雙尖牙的恒牙牙合患者36例本溪国产黄色视频aa。

Methods Twenty recently extracted human normal bicuspid teeth were randomly divided into three groups: Nd-YAG laser power group, simple application drug group, eight teeth in every group, four teeth in vacuity contrast group.

選用臨床正畸患者拔除的健康前磨牙20顆亚洲自偷自偷偷色无码中文，隨機分為3組：激光組、單純涂藥組黄色AⅤ无码视频，每組8顆1级黄色网站，對照組4顆。

The first three largest number of missing teeth is as follows: maxillary first molar, maxillary second molar and mandibular first molar. The first three largest number of resident teeth is as follows: mandibular cuspid, mandibular bicuspid and maxillary cuspid. The cases without occusal relationship account for 19.51%; and the cases which need occlusal reconstruction or occlusal elevation account for 19.51% of all the cases, while food impaction exists in 21.84% cases.

結(jié)果：本組老年人平均缺失牙齒9.10顆巨乳在线播放，缺失最多的前3位牙齒是上頜第一磨牙、上頜第二磨牙和下頜第一磨牙二级A片视频；余留最多的前3位牙齒是下頜尖牙亚洲自拍高清无码、下頜第一雙尖牙和上頜尖牙日韩精品欧美大片资源在线观看。19.51%的病例頜骨間無咬合接觸關(guān)系，19.51%的病例修復(fù)時需咬合重建或咬合抬高不卡欧av在线天堂；21.84%的病例修復(fù)前存在食物嵌塞欧美熟女性爱爱。

Methods Used the dental desensitizer (Gluma, Single Bond 2, Bisblock) individually on the prepared human bicuspid teeth which were extracted for orthopaedics. Observed the microscopic characteristic of the dentinal surface and cross section with SEM.

常規(guī)牙體預(yù)備離體正畸牙，涂用脫敏劑（Gluma又粗又长又硬的视频、Single Bond 2乱妇乱女熟妇熟女网站、Bisblock），用掃描電鏡觀察牙本質(zhì)表面和剖面的微觀特征日本性爱三级片免费在线播放，與對照組比較欧洲黄片毛片。