排龈线在楔状缺损修复中的应用

目的探讨排龈线在楔状缺损修复中的作用。方法选择患2颗以上楔状缺损的患者46例,共235颗患牙,分为2组（排龈组和不排龈组）,分别在排龈后进行充填治疗或不排龈直接行充填治疗。追踪观察排龈组和不排龈组充填物脱落情况及牙龈健康状况。结果充填治疗前2组的龈炎发生率无统计学差异（χ2=0.07,P〉0.05）。治疗1年后,2组充填物脱落率（χ2=8.56,P〈0.05）、龈炎发生率（χ2=4.98,P〈0.05）差异有统计学意义,排龈组充填治疗疗效优于不排龈组。结论楔状缺损修复中应用排龈线排龈能有效提高临床治疗效果。     

排龈在龈下楔状缺损治疗中的应用

目的：观察排龈在龈下楔状缺损充填修复中的临床疗效。方法：选择36例120颗龈下楔状缺损患牙,随机分为实验组和对照组,每组60颗,实验组使用排龈线排龈后Z350复合树脂修复,对照组直接树脂修复,随访2年。追踪观察实验组和对照组充填物脱落情况和边缘密合状况。结果：充填治疗后0．5年两组的充填物脱落发生率无统计学差异（P〈0．01）。在治疗1、2年后,两组充填物脱落发生率和边缘密合性方面有统计差异学（P〈0．05）,实验组疗效优于对照组。结论：龈下楔状缺损修复中应用排龈技术能有效提高临床治疗效果。     

排龈线在治疗楔状缺损中的临床应用

目的　探讨使用排龈线对光固化复合树脂治疗楔状缺损疗效的影响。方法　选择唇颊面牙颈部楔状缺损的患者49例,共215颗患牙,随机分为实验组和对照组,其中105颗纳入实验组,110颗纳入对照组,实验组在排龈线排龈后,用光固化复合树脂充填治疗,对照组直接用光固化复合树脂充填治疗。追踪观察实验组和对照组充填后充填物悬突的发生率及充填物脱落的情况。结果　充填后2周复查实验组和对照组悬突的发生率差异有显著性（χ2=13.91,P<0.01）。充填治疗1年后实验组和对照组充填物脱落率差异有统计学意义（χ2=8.56,P<0.05）。结论　楔状缺损在充填治疗中应用排龈线排龈能有效降低充填物悬突的发生率和有效提高充填物的保存率。     

排龈术与肩台车针联合应用于老年人根面龋治疗的效果评价

目的观察将排龈线与肩台车针联合应用于老年人根面龋治疗的临床疗效。方法选择患有根面龋的老年患者68例,随机分为实验组(排龈线组)和对照组(传统法组)各34例,其中实验组患牙85颗,对照组患牙93颗。排龈线组备牙前在龈沟内放入排龈线,然后以肩台车针预备洞型;传统法组直接用传统裂钻和球钻进行窝洞预备,备牙后两组均采用DyractAP复合体充填窝洞。观察2组患牙备牙后发生牙龈损伤出血、充填后形成悬突以及1年后的充填效果。结果排龈线组牙体预备后牙龈损伤出血率和充填后悬突形成率均低于传统法组,1年后排龈线组充填成功率高于传统法组,3者差异均有显著性(P<0.005)。结论排龈线与肩台车针联合应用于老年人根面龋治疗可以取得更佳的疗效。     

不同排龈方法修复龈下楔状缺损临床疗效观察

目的:评估不同排龈方法修复龈下楔状缺损(楔缺)的临床疗效。方法:选择颈部边缘位于龈下0～2 mm内较难充填的楔缺,分3组:I组:龈边缘位于龈下0～1 mm的楔缺40个,使用排龈线排龈;II组:龈边缘位于龈下0～1 mm的楔缺40个,使用推龈器排龈;III组:龈边缘位于龈下1～2 mm的楔缺20个,使用推龈器排龈;IV组:龈边缘位于龈上的楔缺40个,直接充填,作为对照。各组均使用可乐丽菲露自酸蚀粘接剂粘接,3M Z250树脂进行充填。治疗后1年随访,以改良的USPHS直接临床评价系统评估疗效。数据行卡方检验。结果:I-III组病例修复体均无脱落,对照组有2个脱落。楔缺修复1年后4组成功率差异无显著性;在充填体脱落、边缘适合性、继发龋、边缘着色、新发缺损、牙龈反应及牙髓反应7个方面,4组间差异均无显著性(P>0.05);对于任何一组,基线与1年后复查的差异均无显著性(P>0.05)。结论:在采用有效排龈方法的前提下,龈下楔状缺损的修复可取得满意疗效,颈部边缘于龈下的深度并不影响治疗效果;推龈器的使用对于龈下楔状缺损的治疗有较大帮助。     

排龈技术在牙体缺损修复中的应用

目的观察排龈对3MZ250复合树脂修复牙体缺损疗效的影响。方法选择31例120颗唇颊面牙颈部龋缺损牙,随机分为实验组和对照组,每组60颗,经窝洞预备后,实验组排龈线排龈后3MZ250复合树脂修复,对照组直接树脂修复,随访2年,评价修复体保存、继发龋以及边缘密合状况。结果充填后1周复查,使用排龈线组修复后悬突的发生率低于对照组,差异有显著性（P〈0．01）。充填后0．5年复查两组脱落率无明显差异;1年及2年后复查实验纽充填体的脱落率明显低于对照组（P〈0．05）。结论排龈可提高3MZ250复合树脂修复牙体缺损的修复体保存率,可以作为一项常规使用措施。     

龈缘及龈下龋损治疗中应用排龈线的临床疗效评价

目的观察将排龈线应用于龈缘及龈下龋损光固化树脂充填治疗的临床疗效。方法将60例龈缘及龈下龋损的患者130颗患牙,随机分为试验组（排龈组）68颗和对照组（不排龈组）62颗,进行光固化树脂充填。观察1年后疗效。结果试验组1年后充填物无脱落92.64%,对照组为80.64%;试验组1年后无继发龋发生95.59%,对照组为83.87%;试验组1年后无边缘性龈炎发生98.53%,对照组为75.81%;经χ^2检验,两组差异有统计学意义。试验组1年后疗效满意。结论作为一种选择性辅助隔离方法 ,在光固化树脂充填龈缘及龈下龋损中应用排龈线可以取得较好的临床疗效。     

排龈技术联合流动复合树脂和自酸蚀粘结剂在龈下楔状缺损修复中的临床应用

目的评估排龈技术联合流动复合树脂和自酸蚀粘结剂修复楔状缺损的效果。方法选择龈壁齐龈缘或位于龈下≤1 mm楔状缺损患者20例(90颗患牙),排龈组使用#00Ulrapak排龈线排龈,联合流动复合树脂和自酸蚀粘结剂修复楔状缺损,而对照组直接充填,不排龈。修复后1年复查,以美国公共卫生署直接临床评价系统评估临床疗效结果。结果 1年后复查,排龈组成功率为100%,高于未排龈的对照组(成功率为86.7%),有显著性统计学差异(P<0.01)。排龈组A级达40颗(88.9%),而对照组A级仅21颗(46.7%),统计学有显著差异(P<0.01)。结论排龈技术联合流动复合树脂、自酸蚀粘结剂修复龈下楔状缺损获得良好的效果,值得临床推广应用。     

排龈术在龈下楔状缺损修复中的临床应用

选择楔状缺损颈部边缘位于龈下0～2 mm 内、较难充填的活髓患牙120颗,分3组（n ＝40）：I 组：排龈线排龈;II 组：排龈膏排龈;III 组：对照组,直接充填。充填后1、2年复查,以改良的 USPHS 直接临床评价系统评估疗效。修复1年及2年后实验组和对照组成功率差异均有显著性,实验组之间成功率差异无显著性。     

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目的：评估排龈术对龈下楔状缺损修复效果的影响。方法选择2008年2月至2009年7月来南京大学医学院附属口腔医院牙体牙髓科就诊的双侧上颌前磨牙颈部楔状缺损患者40例,将同一患者的两侧患牙随机分为排龈组与对照组（各40颗牙）,排龈组在排龈线排龈后用Z350复合树脂充填,对照组直接用Z350复合树脂充填。随访2年,观察其临床疗效,评价修复体保存、边缘密合性以及继发龋发生情况。结果充填1周后首次复查,排龈组悬突发生率低于对照组,差异有统计学意义（P〈0.05）。充填1年和2年后复查,排龈组修复体的脱落率均明显低于对照组,差异有统计学意义（P〈0.05）。结论排龈术可提高龈下楔状缺损修复的治疗效果。     

Effects of gingival retraction materials on gingival blood flow

PURPOSE: The effects of 2 chemical retraction agents on gingival blood flow and systemic blood pressure in subjects with healthy gingiva were investigated. MATERIALS AND METHODS: Thirty volunteer dental students were selected for the study and randomly divided into 2 groups. Aluminium chloride-impregnated cord (right side) and nonimpregnated cord (left side) were placed in the gingival sulcus of group 1. Epinephrine-impregnated cord (right side) and nonimpregnated cord (left side) were placed in group 2. Blood flow in the retracted marginal gingiva was measured by laser Doppler flowmetry, and the systemic blood pressures of subjects were recorded before and after the retraction procedure. RESULTS: A statistically significant decrease in blood flow was observed in group 2, but there was no significant change in gingival blood flow in group 1. A decrease in diastolic blood pressure of the subjects in group 2 was also observed. However, there was no significant change in blood pressure of the subjects in group 1. CONCLUSION: Gingival retraction affects gingival blood flow temporarily. Epinephrine-impregnated cords can be used safely in patients who have healthy gingiva, if patient stress and gingival trauma are avoided during cord placement.     

Free gingival grafts for the treatment of gingival recession

Abstract Free gingival grails can be utilized, alone or in combination with a coronally positioned flap, for the prevention and the treatment of gingival recession. The graft can be placed directly over the denuded root, as first described by Sullivan & Atkins (1968). This technique will provide adequate results, especially in cases with relatively little recession. After placing a free gingival graft in such an area, one can often observe bridging and or creeping attachment. In the case of bridging, some of the grafted tissue will remain vital over the avascular zone, i.e. the root. Creeping attachment is the result of coronal migration of the grafted gingiva and will take place during the years following surgery. Bridging and creeping are most likely to occur in cases of narrow recession where the grafts had been placed directly over the denuded zone. In a second type of surgical procedure, an enlargement of the attached gingiva is first obtained through the graft. The area of recession is later covered by a coronally positioned flap. Several cases are presented which illustrate the results obtained with this procedure. In children, when there is insufficient attached gingiva. it is often desirable to place grafts before orthodontic therapy. In the prevention or treatment of gingival recessions, four possibilities may be considered: 1)no treatment, 2)placement of a graft to prevent recession, 3)stabilizing an existing recession. 4)attempt to cover the denuded root.     

双线排龈法和单线排龈法对基牙龈沟液含量和成分的影响

目的:比较双线排龈和单线排龈对基牙龈沟液含量和成分的影响。方法:对47位患者的94个牙行冠桥修复,采用同一患者的不同牙位对照,分别采取双线排龈法和单线排龈法,取印模,完成修复体。于修复后7、21 d和3、6个月提取受试牙位龈沟液,称重并检测其中天冬氨酸转氨酶(AST)和碱性磷酸酶(ALP)含量。结果:修复后7 d,单线排龈组龈沟液量、GCF-AST和GCF-ALP含量高于双线排龈组(P<0.05);修复后21 d、3个月,两组各项牙周指标之间无显著性差异(P>0.05);修复后6个月,单线排龈组龈沟液含量高于双线排龈组(P<0.05),GCF-AST和GCF-ALP含量有所升高但差异无统计学意义(P>0.05)。结论:双线排龈法对牙周组织的影响较单线排龈法小,更有利于牙周组织的健康。     

应用排龈技术减少临床牙龈损伤

目的：当需要将固定修复体的边缘放置于龈下,如何才能在牙体预备时尽可能避免损伤周围组织,采集准确印模以获得精美持久的修复效果是临床须解决的主要问题。方法：作者在对47例门诊患者128颗牙行冠桥修复时,于预备牙及取模过程中应用排龈线排龈,结果：取得良好结果：结论：该技术可减少牙体预备对牙龈组织的损伤及出血,能帮助取得清晰的软硬组织界限。健康的牙龈及细微的操作是减少损伤,修复成功的关键。     

义龈修复上下前牙区牙龈退缩

牙槽嵴吸收及牙龈退缩,对牙周病患者口腔功能存在不利的影响,尤其是前牙区因牙根的暴露,邻间隙的增大而带来美学的不协调,给患者的生活带来了不便。我科近年来采用义龈修复上下前牙区牙龈退缩,现将有关结果报道如下:1.资料与方法1.1样本:本组13例患者19件义龈修复,其中男性3例,女性10例,平均年龄47.4岁。所有样本均来自本院2000年3月至2002年5月门诊牙周病患者,经过严格牙周内科及外科治疗,牙周情况稳定。排除严重全身性疾病如:糖尿病,肾功能衰竭,严重精神障碍及生活不能自理者。1.2操作方法:1.2.1模型及蜡型制作:① 弹性义龈组采用藻酸钠印…     

Alteration of gingival dimensions in a complicated case of gingival recession

This case report describes possible etiology, treatment, and 2-year outcome of a complicated case of gingival recession in the mandibular anterior dentition. Deep, cleftlike Miller Class I and II recessions at both mandibular canines and all incisors were treated using subperiosteal connective tissue grafts and coronally repositioned flaps. During surgery it was noted that the facial aspects of the roots had lost bone near the apex. After surgery profound alterations of gingival dimension occurred. Mean gingival thickness increased from 0.87 +/- 0.20 mm to 258 +/- 0.65 mm, and width of keratinized tissue increased from 1.34 +/- 0.79 mm to 4.80 +/- 0.97 mm. Periodontal probing depths increased from 1.06 +/- 0.33 mm to 2.74 +/- 0.81 mm, and depth of the recessions was reduced by 56% +/- 5%. Gingival thickness and periodontal probing depth remained stable over the 2 years of observation. Gingival width decreased and the mucogingival border moved a mean 2.5 mm coronally. Creeping attachment resulted in a 74% +/- 24% coverage of recession after 2 years and a gain in clinical attachment of 1.79 +/- 1.56 mm. The present observations point to long-lasting, continuous alterations in the mucogingival region following periodontal surgery in a case of cleftlike Class II recession.