oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
腭侧入路牙槽突裂植骨术的初步应用与评价  [PDF]
杨超,石冰,刘坤,郑谦
华西口腔医学杂志 , 2013, DOI: 10.7518/hxkq.2013.01.008
Abstract: 目的改进牙槽突裂植骨术的技术方法,并对腭侧入路牙槽突裂植骨术的即刻效果进行初步评价。方法选取20名非综合征性单侧牙槽突裂患者为研究对象,其中不完全性牙槽突裂患者8名,完全性牙槽突裂患者12名。对20例患者实施腭侧入路牙槽突裂植骨术,在术前和术后分别拍摄锥形束CT(CBCT)片,使用Image-ProPlus5.1软件测量相关数据并进行统计学分析。结果20名患者中总体植入骨量比率为88%,唇侧植入骨量比率为93%,腭侧植入骨量比率为84%。结论腭侧入路牙槽突裂植骨术弥补了既往腭侧植入骨量不足的缺点,裂隙内鼻腔瓣三角瓣的切口设计兼顾了鼻底裂隙和唇侧裂隙的关闭,避免大范围的松弛切口以及颊侧黏膜推进瓣的应用。
唇、腭侧联合入路修复牙槽突裂的临床初步研究
Clinical study on secondary alveolar bone grafting by lip side combined with palate side approach
 [PDF]

鲁勇,石冰,王志勇,李浩
- , 2017, DOI: 10.7518/gjkq.2017.01.003
Abstract: 摘要: 目的探讨唇、腭侧联合入路修复牙槽突裂的临床效果。方法45例先天性牙槽突裂患者接受植骨手术修复,其中21例(年龄9~13岁,平均年龄10.3岁)行唇、腭侧联合入路植骨修复(实验组),24例(年龄9~14岁,平均年龄11.2岁)行唇侧入路植骨修复(对照组)。术后1~12个月随访,采用临床回顾性研究的方法比较2组术后疼痛、肿胀程度;牙槽突裂植骨成功率评价的临床分级标准一般以Bergland牙槽突裂植骨分级标准进行评价。结果实验组在术后疼痛、肿胀程度均低于对照组;实验组植骨手术成功率81%,对照组植骨手术成功率42%。结论唇、腭侧联合入路植骨修复牙槽突裂手术创伤小、术后不良反应少,临床效果满意。
Abstract: Objective To assess the clinical effect of secondary alveolar bone grafting(SABG) by lip side combined with palate side approach. Methods The study included 45 cases of alveolar clefts treated with SABG. The experimental group comprised 21 alveolar cleft cases that received SABG by lip side combined with palate side approach(age range 9-13 years, mean age 10.3 years). The control group comprised 24 alveolar cleft cases that received SABG by lip side approach(age range 9-14 years, mean age 11.2 years). Postoperative pain and swelling were recorded and analyzed. After a follow-up period of 1-12 months, the amount of bone in the SABG areas were retrospectively analyzed according to the Bergland scales. Results The occurrence of postoperative pain and swelling in the experimental group was lower than that in control group. A total of 81% of cases in the experimental group were categorized as successful, and 42% of cases in the control group were categorized as successful. Conclusion SABG through lip side combined with palate side approach has a high success rate with a low incidence of complications. This method has satisfactory clinical results with less surgical trauma and postoperative adverse reactions.
中图分类号
MTA治疗成年患者根尖孔未闭合患牙的疗效评价  [PDF]
徐琼,凌均棨,谷海晶,刘建伟
华西口腔医学杂志 , 2006,
Abstract: 目的评价无机三氧化聚合物(MTA)治疗成年患者根尖孔未闭合患牙的临床疗效。方法选取成年患者根尖孔未闭合的前牙及前磨牙共41颗,随机分为2组,试验组21颗牙,在完成根管预备和消毒后,在手术显微镜下将MTA充填于根尖孔及根管下段,厚约3—5mm,硬固后采用热牙胶完成根管中上段的充填;对照组20颗牙,采用氢氧化钙类根管糊剂Vitapex行根尖诱导成形术,定期复查,在根尖部有硬组织形成后完成根管治疗。记录患者就诊次数、治疗周期及治疗效果。结果试验组术后X线片显示15颗患牙适充,6颗牙超充约0.5—2mm,根管内充填物致密;平均就诊次数3.5次,平均治疗周期11.8d,复查时多数患牙窦道闭合,根尖周病变明显缩小或消失,无新的暗影出现;对照组11颗患牙诱导成功,根尖有硬组织形成,9颗牙无明显根尖屏障形成,平均就诊次数6次,平均治疗周期306.8d。结论与根尖诱导成形术比较,MTA治疗成年患者根尖孔未闭合患牙的周期短,疗效好。
牙槽突裂植骨术后的植骨效果评价  [PDF]
吴军,王国民,钱玉芬,毕玉升,陈振琦
华西口腔医学杂志 , 2008,
Abstract: 目的通过牙CT的扫描及Matlab7.0软件的应用,评价牙槽突裂植骨术后的骨缺损区的体积变化。方法选取11名单侧完全性牙槽突裂患者,应用牙CT扫描及Matlab7.0软件计算植骨前和植骨后3个月的牙槽突裂空隙体积和所植入骨的体积,并计算术前后体积比值。结果植骨术后骨桥的体积与植骨前牙槽突裂隙的体积比值,最大值可达114.99%,最小值仅有13.36%,平均数为71.80%,变异系数为47.987。结论植骨后存活的骨桥体积变化较大。
牙槽突裂植骨术后植入骨的定位分析  [PDF]
吴军,王国民
华西口腔医学杂志 , 2010, DOI: 10.3969/j.issn.1000-1182.2010.02.017
Abstract: 目的应用牙CT对牙槽突裂植骨术后的骨桥位置进行定位分析。方法选取18名单侧完全性牙槽突裂患者,在牙槽突裂植骨术后3个月对植骨部位进行牙三维CT扫描,将牙槽突裂隙分割后对植入骨进行定位。结果牙槽突裂植骨术后,近远中向上骨桥的数量没有统计学差异(P>0.05);唇腭向上唇侧的骨桥数多于腭侧骨桥数(P<0.001);垂直向上,植入骨的骨桥主要存在于裂隙侧中切牙的根中和根尖1/3,而鼻底及近牙槽嵴顶的骨桥数量较少(P<0.05)。结论牙槽突裂植骨术后骨桥的位置主要位于裂隙侧中切牙的根中和根尖1/3处,且唇侧的骨量明显多于腭侧的骨量。
骨诱导活性材料在修复牙槽突裂中的临床研究  [PDF]
佘小明,张倩,田锟,杨丽,熊贵发
华西口腔医学杂志 , 2010, DOI: 10.3969/j.issn.1000-1182.2010.04.013
Abstract: 目的研究骨诱导活性材料(OAM)修复牙槽突裂骨缺损的可行性和可靠性。方法将27例年龄9~20岁的单侧牙槽突裂患者分为试验组和对照组,试验组(12例)采用OAM进行牙槽突裂修复,对照组(15例)采用自体髂骨质松质进行牙槽突裂移植修复。术后6个月,采用CT扫描及三维重建方法观察牙槽突裂重建情况,比较2种材料修复牙槽突裂骨缺损的效果。结果术后6个月,2组患者各有2例植骨失败,其余患者牙槽突连续性均得到恢复,未萌尖牙向植骨区移动并萌出。2组患者植骨成功率之间的差异无统计学意义(P=1.000)。结论OAM修复牙槽突裂有明显的成骨作用且不阻碍尖牙的正常萌出,其成骨效果与自体髂骨骨松质修复效果相似。
牙槽突和硬腭全裂隙植骨修复对腭裂上颌骨模型的生物力学影响  [PDF]
文抑西,石冰杨壮群
华西口腔医学杂志 , 2006,
Abstract: 牙槽突及牙槽突加硬腭全裂隙植骨对腭裂上颌骨模型的生物力学影响。方法采用15岁男性患者头颅CT扫描DICOM数据建立3种单侧腭裂上颌骨三维有限元模型,通过叠加不同的植骨块形成牙槽突植骨修复及牙槽突加硬腭全裂隙植骨修复后的腭裂上颌骨模型。在上颌骨前牙区及两侧前磨牙区以正常上唇压力加载负荷,观察各种应力沿上颌骨分布的特点。结果未植骨模型,上颌骨段以变形和移位为主,各种应力集中于上颌骨前壁、牙槽突和腭板等处。植骨模型表现为应力分布均匀化。牙槽突植骨可以显著降低由于上颌骨变形而产生的剪应力和牙槽突的向内移位。牙槽突加硬腭全裂隙植骨可以使得应力分布更加均匀,但是与牙槽突植骨差异不大。结论唇裂修复手术后产生的压力是使未作植骨修复的牙槽突产生变形移位的主要原因。牙槽突植骨修复可以使腭裂上颌骨表面应力分布趋向均匀,生物力学意义重大。牙槽突加硬腭全裂隙植骨可以使得应力分布更加均匀,但与单纯牙槽突植骨效果相比,无显著性差异。
牙周炎患牙位点保存术的临床疗效观察
Clinical effects on the prevention of alveolar bone absorption by site preservation after tooth extraction due to periodontitis
 [PDF]

孙俊毅,汪明敏,,,朱春晖,,,,,,
- , 2016, DOI: 10.7652/jdyxb201603028
Abstract: 摘要:目的 观察位点保存术在牙周炎患牙拔除后牙槽骨量改变的临床效果。方法 纳入门诊确诊为牙周炎不能保留的患牙85颗,随机分为2组:①常规拔牙组,40颗患牙,采用传统的牙拔除术;②位点保存组,45颗患牙,经微创拔牙后牙槽窝同期植入Bio-OSS胶原,覆盖Bio-Gide胶原膜并且严密缝合。对比两组患牙的临床疗效,并分别于术前术后行X线和锥形束CT(cone beam CT, CBCT)影像学检查,评估2组牙槽骨量变化情况及比较牙槽骨的密度情况。结果 两组术区均无感染,愈合良好,牙龈质地坚韧,颜色粉红。X线和CBCT结果显示,常规拔牙组牙槽骨水平和垂直吸收增加,位点保存组牙槽骨垂直和水平吸收量显著低于常规拔牙组(P<0.05),术后6月CBCT显示位点保存组新生骨密度显著高于常规拔牙组。结论 位点保存术可有效预防及减少牙周炎患牙拔除后牙槽骨的吸收,改善牙槽骨高度和宽度,成骨效果良好,有利于满足后期的修复需要。
ABSTRACT: Objective To observe the clinical effects on prevention of alveolar bone absorption by site preservation after tooth extraction due to periodontitis. Methods The experimental group consisted of 40 patients with 45 extracted teeth due to periodontitis. The fresh sockets were immediately grafted and filled with Bio-oss collagen and Bio-Gide after minimally invasive tooth extraction, while 40 teeth of control group were only treated with cotton balls bitten tightly over the socket for half an hour. Two groups were observed for changes in alveolar bone density by X-ray and cone beam CT (CBCT) after 6 months. Results There were the wound healing and no infection in extraction site of all patients with or without site preservation operation. The gingiva of extraction site was pink and tough in all groups. The alveolar bone loss in regular extraction patients significantly increased in horizontal and vertical aspects by X-ray and CBCT, while site preservation improved the alveolar bone defects (P<0.05). After site preservation for 6 months, CBCT analysis showed that the density of new alveolar bone markedly enhanced compared with regular extraction group. Conclusion The technique of site preservation after tooth extraction due to periodontitis is a method which can prevent and reduce disuse atrophy absorption of the alveolar ridge so that the height and width of the alveolar bone can meet aesthetic requirements
多颗多生牙合并全口多处隆突1例  [PDF]
王悦,刘春丽,王静,柳二弼,郑明
华西口腔医学杂志 , 2010, DOI: 10.3969/j.issn.1000-1182.2010.03.027
Abstract: 多生牙在口腔临床上比较常见,但同时出现多颗多生牙和颌骨多发隆突的患者比较罕见。本文报道1例同时出现5颗已萌出的多生牙且伴有颌骨多发隆突的患者,并结合文献对其进行讨论。
Er, Cr:YSGG激光对牙周炎患牙及健康牙根面的影响
Effects of Er, Cr: YSGG laser on the root surface of periodontitis and healthy teeth
 [PDF]

曲春娜,康军,栾庆先
- , 2016, DOI: 10.3969/j.issn.1671-167X.2016.01.012
Abstract: 目的:探讨应用RFPT5-14工作尖的Er, Cr: YSGG激光照射对牙周炎患牙及健康牙根面微观结构改变以及粗糙度的影响。方法:选取8颗因牙周炎拔除的患牙,用超声刮治器去除根面牙石,另选取8颗因正畸减数或阻生智齿拔除的健康牙,将每颗牙根面分为4个区域,对应为1~4组,分别进行如下4种处理:(1)不处理;(2)Gracey刮治器进行根面平整30 s;(3)低功率激光照射30 s;(4)高功率激光照射30 s。通过扫描电镜观察表面微观结构,通过三维光学轮廓仪测量表面粗糙度Ra值。结果:手工根面平整组的表面可见玷污层覆盖;激光照射组表面较清洁,可见消融样改变;高功率激光组可见局部有牙本质小管暴露。牙周炎患牙第1组的Ra值为(237.4±20.0) nm,第2~4组的Ra值分别为(135.7±11.9) nm(P=0.01)、(463.6±49.3) nm(P<0.001)和(486.0±59.0) nm(P<0.001)。健康牙第1组的Ra值为(191.4±44.5)nm,第2~4组的Ra值分别为(131.6±21.5) nm(P=0.482)、(463.7±34.6) nm(P<0.001)和(470.3±121.3) nm(P<0.001)。结论:应用RFPT5-14工作尖的Er, Cr: YSGG激光照射可造成牙周炎表面的病变牙骨质及健康牙表面的健康牙骨质微观结构的改变,可以有效减少根面玷污层,并可见有消融样改变。Er, Cr: YSGG激光照射可以增加根面粗糙度,还需进一步实验来评价激光照射后根面的生物相容性。
Objective: To evaluate the effects of Er, Cr: YSGG laser on the root surface of periodontally involved teeth and healthy teeth, concerning the microstructure and the roughness. Methods: Eight freshly extracted teeth due to severe periodontitis and eight freshly extracted teeth due to orthodontic reasons or being third molar were chosen in this study. The root surface of each tooth was divided into four areas, and received four treatment methods: no treatment (control group); root planing with Gracey scaler for 30 seconds; irradiation by the lower power Er, Cr: YSGG laser; irradiation by the higher power Er, Cr: YSGG laser. Four periodontally involved teeth and four healthy teeth were used for the evaluation of microstructure using scanning electron microscope (SEM). The other four periodontitis teeth and four healthy teeth were used for the evaluation of roughness (Ra value) using 3D profiler.Results: Smear layer was found on the teeth scaled by Gracey scaler, while the teeth irradiated by Er, Cr: YSGG laser demonstrated a melting surface with less smear layer. In the periodontitis teeth irradiated by the higher power, opening dentinal tubules could be observed. For the periodontally involved teeth, the Ra values of groups 1 to 4 were (237.4±20.0) nm, (135.7±11.9) nm (P=0.01), (463.6±49.3) nm (P<0.001) and (486.0±59.0) nm (P<0.001) respectively. For the healthy teeth, the Ra values of groups 1 to 4 were (191.4±44.5) nm, (131.6±21.5) nm (P=0.482), (463.7±34.6) nm (P<0.001) and (470.3±121.3) nm (P<0.001) respectively.Conclusion:Er, Cr: YSGG laser can affect the microstructure of the cementum of the periodontitis teeth and healthy teeth. Irradiation by the Er, Cr: YSGG laser resulted in a melting surface with less smear layer and increased the roughness in the surface of root.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.