3M流动树脂与3M玻璃离子修复乳磨牙Ⅱ类洞的临床疗效比较

目的:探索儿童口腔科2种常用充填材料用于乳磨牙邻牙合面龋洞(Ⅱ类洞)充填治疗的临床疗效。方法:将178名4~6岁儿童266颗乳磨牙Ⅱ类洞随机分为2组,即3M流动树脂组(实验A组)、3M玻璃离子组(对照B组),对乳磨牙进行充填治疗后1、2年复查比较2种材料治疗的临床疗效。结果:采用3M流动树脂和3M玻璃离子对Ⅱ类洞进行充填治疗后1年成功率分别为96.00%和87.80%,充填治疗后2年成功率分别为95.76%和86.61%,差异有统计学意义(P<0.05)。结论:3M流动树脂用于乳磨牙邻牙合面龋洞充填治疗的临床效果优于3M玻璃离子。     

流体树脂应用于恒磨牙预防性充填术3年效果评价

目的探讨光固化流体树脂对年轻恒磨牙窝沟龋预防性充填治疗的疗效。方法对56例7～14岁患儿两侧同名磨牙分别采用两种不同的预防性树脂充填方法。试验组:112颗面窝沟龋在磨除龋坏牙体组织后联用后牙复合树脂与流体树脂对龋坏部位和未龋坏窝沟区域进行预防性充填治疗。对照组:112颗面窝沟龋在磨除龋坏牙体组织后采用传统窝沟封闭剂加后牙复合树脂,评价两组3个月、1年、3年的保留成功率。结果随访3年后发现采用Wave Flow流动复合树脂加后牙复合树脂进行预防性树脂充填治疗,充填成功率高达87.5%,对照组仅为67.7%,两组成功率比较具有非常显著性差异。结论光固化流体树脂加后牙复合树脂对年轻恒磨牙的窝沟龋治疗疗效确切,值得临床推广应用。     

氟化物涂膜与窝沟封闭术或预防性树脂充填联合使用预防第一恒磨牙龋的临床效果评价

目的： 探讨氟化物涂膜与窝沟封闭术或预防性树脂充填联合使用预防年轻第一恒磨牙龋病的临床效果。方法： 选取2015年2月—2016年1月在景德镇市第二人民医院进行口腔健康检查的90例儿童(6~8岁)300颗未成洞可疑龋的第一恒磨牙作为研究对象,随机分为A、B、C、D和E组。A组行窝沟封闭术;B组行预防性树脂充填术;C组行0.5%氟化物涂膜联合窝沟封闭术;D组行0.5%氟化物涂膜联合预防性树脂充填术;E组为对照组,单纯行日常刷牙护理。治疗后6、12、18个月复诊,观察各组儿童患龋比例及A、B、C、D组儿童窝沟封闭剂或树脂充填材料保留情况,采用SPSS21.0软件包对数据进行统计学分析。结果： 各组儿童在术后6、12个月时,A、B、C、D组儿童窝沟封闭剂或树脂充填材料保留率和患龋比例差异均无统计学意义（P>0.05）。术后18个月时,E组儿童患龋比例显著高于A、B、C、D组;A组与C组、B组与D组比较,差异有统计学意义（P<0.01）;A、B组儿童龋齿发生率较高,窝沟封闭剂或树脂充填材料保留率显著低于C、D组,差异均有统计学意义（P<0.05）。结论： 对年轻恒磨牙未成洞可疑龋采用氟化物涂膜联合窝沟封闭术或单独窝沟封闭术预防龋病有一定效果,但氟化物涂膜联合预防性树脂充填防龋效果更优。     

三种手术方案治疗儿童乳磨牙深龋的随机对照临床研究

目的:探讨完全去龋、选择性去龋法与Hall技术治疗儿童乳磨牙深龋的临床疗效。方法:选择我院2021年6月～2022年1月收治的135例乳磨牙深龋患儿(254颗患牙),按随机数字表法分3组，每组45例。A组(82颗患牙)给予完全去龋法治疗，B组(87颗患牙)给予选择性去龋法治疗，C组(85颗患牙)给予Hall技术治疗。比较3组治疗后3、6、12个月内治疗成功率，治疗过程中疼痛程度、依从性及耐受程度。治疗后12个月评价3组患儿家长的满意度。结果:治疗后12个月内，A组治疗成功率87.80%,B组成功率96.55%,C组成功率97.65%;B、C组成功率均显著高于A组(P<0.05),B、C组成功率差异无统计学意义(P>0.05)。3组患儿治疗过程中疼痛程度逐渐减轻，C组疼痛程度显著低于A、B组，B组显著低于A组(P<0.05)。3组患儿治疗过程中Frankl治疗依从性量表(FBRS)和Houpt行为量表(HBS)评分均逐渐升高，C组FBRS和HBS评分均显著高于A、B组，B组评分均显著高于A组(P<0.05)。3组患儿家长满意度分别为77.78%、93.33%、95...     

不同充填修复方法在乳磨牙邻牙合面龋损中的应用比较

目的:比较玻璃离子水门汀与纳米树脂及金属预成冠充填修复乳磨牙邻牙合面龋损的临床效果.方法:选择5～7岁216例乳磨牙邻牙合面大面积龋损患儿,共计患牙312颗,A组103颗患牙采用玻璃离子水门汀充填,B组105颗患牙采用璃离子水门汀垫底后纳米树脂充填:C组104颗患牙采用玻璃离子水门汀充填后金属预成冠修复.分别在3个月、...     

3种充填方法修复磨牙邻[牙合]面Ⅱ类洞的临床效果

目的比较常规银汞合金充填、银汞合金粘接充填、瓷化树脂充填磨牙邻[牙合]面Ⅱ类洞的临床效果。方法将350例465颗邻[牙合]面Ⅱ类洞的磨牙随机分为A、B、C 3组,分别采用常规银汞合金充填、银汞合金粘接充填和瓷化树脂充填,修复后1、3年进行复查。结果 A组、B组和C组1年后充填成功率分别为98.00%、100.00%、100.00%,3年后成功率分别为71.33%、85.71%、97.32%。3年后在密合度方面,B组优于A组（χ2=6.02,P=0.014）,C组优于A组（χ2=19.98,P=0.000）和B组（χ2=5.19,P=0.026）;牙髓炎发生率,A组高于B组（χ2=4.50,P=0.034）和C组（χ2=7.12,P=0.015）,差异有统计学意义;充填体破损率,A组高于C组（χ2=8.17,P=0.007）,B组高于C组（χ2=7.27,P=0.007）,差异有统计学意义。结论瓷化树脂用于磨牙邻[牙合]面Ⅱ类洞的充填效果最佳,银汞合金粘接充填优于常规银汞合金充填。     

2种用于根管治疗后牙体修复树脂的临床疗效对比分析

目的 观察比较根管治疗后,Z350纳米数脂与sonicfill声波树脂充填修复上颌第一磨牙牙体缺损的临床疗效。 方法 将门诊完成根管治疗后并且余留牙体量足够的上颌第一磨牙40颗随机平均分为A、B组,A 组采用Z350纳米树脂修复;B 组采用sonicfill声波树脂修复。于修复后即刻及12个月对患牙进行检查和随访,参照美国公共卫生署修复体评价标准对其缺损的临床修复效果进行评价。 结果 上颌第一磨牙根管治疗后的牙体树脂修复即刻及12月后两组修复效果无显著差异。 结论 2种树脂均适用于余留牙体量足够的上颌第一磨牙根管治疗后的牙体缺损修复,其中sonicfill声波树脂充填操作时间明显占优。     

无饰瓷氧化锆嵌体与金合金嵌体修复活髓磨牙Ⅱ类洞的疗效比较

目的 比较无饰瓷氧化锆嵌体与铸造金合金嵌体治疗活髓磨牙Ⅱ类洞的临床疗效.方法 选取因龋损或折裂导致的活髓磨牙Ⅱ类洞缺损患牙共60颗,随机分成A组和B组,每组各30颗,分别行计算机辅助设计和制作的无饰瓷氧化锆嵌体修复和金合金嵌体修复,修复后12个月复诊,参照美国公众健康服务修正标准评价治疗效果.结果 修复后12个月,A组有29颗患牙复诊,总成功率为93.53%,B组有28颗患牙复诊,总成功率83.93%,差异有统计学意义(χ2=5.107,P<0.05).美观性评价A组有19颗患牙达到A级,B组没有患牙达到A级,A组的术后美观性评价明显优于B组.结论 对于修复活髓磨牙Ⅱ类洞牙体缺损,使用无饰瓷氧化锆嵌体的美观性和总成功率优于金合金嵌体.     

玻璃离子水门汀与纳米树脂充填乳牙邻面龋的效果比较

目的 比较玻璃离子水门汀与纳米树脂充填乳牙邻面龋的效果.方法 选择来我科就诊的年龄为5～8岁的乳磨牙邻面龋102例,共320颗患牙,其中深龋组204颗,中、浅龋组116颗,每组随机分为富士Ⅸ玻璃离子水门汀充填(A组)和光固化纳米树脂充填(B组).深龋A组采用氢氧化钙盖髓玻璃离子水门汀充填,深龋B组采用氢氧化钙盖髓,玻璃离子水门汀垫底后纳米树脂充填;中浅龋A组直接玻璃离子水门汀充填,B组中龋玻璃离子水门汀垫底后纳米树脂充填,浅龋直接纳米树脂充填.分别在3个月、6个月、1年时复查充填效果,比较两组成功率.结果 深龋组2种材料在各个时间段成功率均无统计学差异(P＞0.05),中、浅龋组2种材料在3个月时两组成功率无统计学差异(P＞0.05),但在6个月和1年时纳米树脂充填组成功率优于玻璃离子水门汀充填组(P＜0.05).结论 光固化纳米树脂是临床上充填乳牙易脱落之邻面龋较好的选择.     

分牙楔钳恢复二类洞邻面接触关系的临床应用

目的 观察分牙楔钳用于Ⅱ类洞复合树脂充填时邻面接触关系的恢复效果。方法 选择227颗后牙Ⅱ类洞,随机分为三组进行树脂充填。A组采用普通成形片加楔子的传统方法充填复合树脂;B组采用分段式成形系统充填复合树脂;C组采用分牙楔钳充填复合树脂。充填完成后采用牙线法测试接触区的松紧度,并拍摄X线片观察邻面成形情况,术后1周复查食物嵌塞情况。结果 A组72颗患牙邻面接触松紧度临床满意率为52.8%,术后复诊69颗食物嵌塞发生率为31.9%;B组76颗患牙邻面接触松紧度临床满意率为82.9%,术后复诊71颗食物嵌塞发生率为5.6%;C组79颗患牙邻面接触松紧度临床满意率为88.6%,术后复诊73颗食物嵌塞发生率为6.8%。A组与B组、A组与C组在邻面接触松紧度的临床满意率、食物嵌塞的发生率上均存在显著差异,而B组与C组之间无差异。A组邻面成形临床满意率为80.6%,B组邻面成形临床满意率为86.8%,C组邻面成形临床满意率为89.9%,各组之间无差异。结论 分牙楔钳用于二类洞复合树脂充填可以获得临床满意的邻面接触关系,从而减少充填术后食物嵌塞的发生。     

Palodent后牙邻面成形系统的临床应用

目的建立后牙邻面成形系统的临床评价体系,并用其评价Palodent和环周成形系统对后牙的临床应用效果。方法将符合纳入标准的101个邻面洞按简单随机法分为试验组和对照组,充填时分别采用Palodent和环周成形系统。单个牙充填者79个,成对牙充填者22个。由同一名主治医师完成所有邻面洞的充填工作。由临床医师在充填后即刻用探针检查充填体悬突情况,在备洞后、充填后即刻和术后1周复查时用牙线检查邻接触区恢复情况;由患者在术后即刻和1周复查时填写问卷,了解食物嵌塞、术中舒适度和患牙挤胀感等情况。取充填侧的半口模型,在2名主治医师统一模型评价标准后,由其中1人为所有模型评分。结果建立了一套由问卷调查、临床检查和模型评价组成的评价体系,共计9项指标。应用该体系评价Palodent和环周成形系统,发现2组在问卷调查指标和悬突发生率上无统计学差异;但Palodent成形系统能使后牙邻面洞树脂充填时获得更紧密的邻接触关系。对成对后牙邻面洞进行充填时,Palodent成形系统的边缘嵴成形效果优于环周成形系统。结论对成对后牙的邻面洞进行充填时,Palodent成形系统优于环周成形系统。     

蜡成型预防Ⅱ类洞充填悬突的研究

目的 探讨牙体Ⅱ类洞用树脂或玻璃离子材料充填时,使用牙科红蜡片成型预防悬突形成的效果。方法 ①选择标准牙模型4个牙位,每个牙位5颗模型牙,共20颗模型牙制备Ⅱ类洞,每颗牙分别按4种方法充填,A、B组为实验组,使用蜡成型即将红蜡片制成蜡楔子塞入牙间隙,制备成假壁,充填相应材料;C、D组为对照组,使用成形片;A、C组用玻璃离子充填,B、D组用复合树脂充填;检测悬突发生情况,并测量悬突高度。②从门诊患者中选择需作Ⅱ类充填治疗的30名患者35颗患牙,用蜡成型做光固化树脂或玻璃离子充填;术后探针探查、拍摄X线片。结果 ①实验研究中,蜡成型组悬突的发生率和形成悬突的高度均显著小于成形片组。②临床研究中,充填后探针探查,充填体和窝洞边缘连接光滑无台阶感;X线片显示,充填体与牙齿外形轮廓光滑连续。结论 Ⅱ类洞树脂类或玻璃离子类材料充填修复过程中,应用牙科红蜡片成型可有效防止悬突的发生,效果优于传统金属成型系统。     

A randomized controlled three year evaluation of “bulk-filled” posterior resin restorations based on stress decreasing resin technology

ObjectiveThe objective of this randomized controlled prospective clinical trial was to evaluate the efficacy of a flowable resin composite (SDR) bulk fill technique in posterior restorations and to compare it intraindividually with a conventional 2 mm resin composite curing technique in a 3-year follow up.Materials and methodsThirty-eight pairs Class II and 15 pairs Class I restorations were placed in 38 patients with a mean age of 55.3 years (range 32–87). Each patient received at random at least two, as similar as possible, Class II or Class I restorations of two restorative techniques. In all cavities a single step self-etch adhesive (Xeno V) was applied. In one of the cavities of each pair, a flowable resin composite (SDR) was placed, in bulk increments up to 4 mm as needed to fill the cavity 2 mm short of the occlusal cavosurface. The occlusal part was completed with a nano-hybrid resin composite (Ceram X mono) layer. In the second cavity, the hybrid resin composite was placed in 2 mm increments. The restorations were evaluated using slightly modified USPHS criteria at baseline and then yearly during 3 years. Caries risk and parafunctional habits of the participants were estimated.ResultsAfter three years, 76 Class II and 28 Class I restorations could be observed. One molar resin composite-only tooth showed post-operative sensitivity during 3 weeks for temperature changes and occlusal forces. Two failed Class II molar restorations in the resin composite-only group were observed during the first year, one cusp fracture and one resin composite fracture. An annual failure rate of 1.3% was found for the resin composite only restorations and of 0% in the bulk-filled restorations (n.s.). Ten participants were estimated as having high caries risk and eleven showed active bruxing habits.SignificanceThe 4 mm bulk-fill technique with the flowable resin composite SDR showed highly clinical effectiveness, which was comparable during the 3-year follow-up with the 2 mm resin composite layering technique.     

流动树脂修复楔状缺损的疗效观察

目的 评价流动树脂应用于楔状缺损的临床效果。方法 以40名成年人的55对前磨牙为研究对象,随机分为试验组和对照组。试验组使用Beautifil Flow Plus流动树脂进行充填,对照组使用Filtek Z350流动树脂进行充填。随访1年后观察充填体的脱落率、边缘着色、继发龋及牙髓刺激症状,采用卡方检验分析试验结果。结果 充填术后一年,试验组和对照组的成功率分别为81.82%和70.91%,组间差异无统计学意义（p>0.05）。结论 Beautifil Flow Plus流动树脂具有良好的充填性能,在临床上可应用于楔状缺损的充填。     

Palodent在成对后牙邻面成形的临床评价

目的:评价在成对后牙邻牙合面成形时Palodent系统和普通成形系统的临床应用效果。方法:将符合纳入标准的102对成对的后牙邻牙合面洞随机分为试验组和对照组,每组各51对。充填时分别采用Palodent和普通成形系统,由同一名医师完成所有邻牙合面洞的充填工作。在充填后即刻、1周和1年由另一名医师通过临床检查和X线片对患牙充填后的舒适度、食物嵌塞、解剖外形、边缘嵴、邻接关系和牙龈炎症6项指标进行评价,比较2种成形系统的临床效果。结果:充填后即刻,在解剖外形、边缘嵴和邻接关系3个指标上Palodent组满意度为92.2%、88.2%、90.2%,普通成形系统满意度为76.5%、70.6%和74.5%,差异有显著性(P＜0.05); 充填后1周在舒适度、食物嵌塞、解剖外形、边缘嵴和邻接关系5个指标上,差异有显著性(P＜0.05) ;充填后1年在舒适度、食物嵌塞、解剖外形、边缘嵴和邻接关系6个指标上差异亦有显著性(P＜0.05)。结论:Palodent系统在线对后牙邻牙合面成形时比普通成形系统优势明显。     

Nd:YAG激光对不同充填材料牙本质边缘微渗漏的影响

目的 评价Nd:YAG激光对不同充填材料与牙本质之间边缘微渗漏的影响。方法 选用人离体前磨牙36颗,制备V类洞,随机分为激光组和对照组,激光组使用80 rnJ、10 Hz脉冲Nd:YAG激光照射后,分别用全酸蚀粘接树脂、自酸蚀粘接树脂和玻璃离子充填洞型,对照组不使用激光,同样用如前所述的3种材料充填洞型。将所有标本浸泡在2%亚甲基蓝溶液中24 h后,用金刚砂片从颊舌向通过充填物中央纵向切开牙体,显微镜下观察龈壁染料渗透的深度。采用SAS8.0软件对数据进行统计学处理。结果 经Nd:YAG激光照射后尽管3种材料与牙本质之间微渗漏程度均有降低趋势,但只有玻璃离子组激光照射后较未照射组微渗漏降低具有统计学意义(P<0.05)。结论 脉冲Nd:YAG激光照射牙本质壁,在一定程度上可能会减少玻璃离子充填材料与洞壁的微渗漏。     

Effect of centripetal and incremental methods in Class II composite resin restorations on gingival microleakage

AIM: The aim of this study was to evaluate the microleakage at gingival margins below the cementoenamel junction (CEJ) of Class II composite restorations using various placement techniques. METHODS AND MATERIALS: Sound human maxillary premolars were selected. Eighty slot-style cavities on the mesial or distal surfaces were prepared with the cervical margins located apical to the CEJ. The specimens were divided into two groups based on the restorative technique utilized (centripetal or incremental). Each group was then categorized into two subgroups according to the type of matrix used resulting in a total of four experimental groups as follows: IP=Incremental and Palodent matrix, IT = Incremental and Transparent matrix, CP= Centripetal and Palodent matrix, and CT = Centripetal and Transparent matrix. Following restoration with a total etch adhesive (Single Bond) and a resin composite (Z100), the teeth were thermocycled. Then specimens were immersed in 0.5% basic fuchsin dye for 24 hours at a temperature of 37 degrees C. Sectioned restorations were examined under a stereomicroscope (40X magnification), and the extent of the microleakage was scored and recorded. Data were analyzed using the Kruskal-Wallis non-parametric statistical test (P=0.05). RESULTS: In the four groups of the study no significant differences in the mean rank of microleakage were observed (p>0.05). CONCLUSION: When the gingival margin was located on cementum, the kind of matrix and filling technique did not reduce the microleakage.     

Do condensable composites help to achieve better proximal contacts?

OBJECTIVES: Obtaining acceptable contact areas with adjacent teeth is a significant challenge when placing direct resin composite in Class II preparations. It was the purpose of this laboratory study to evaluate the influence of the type of resin composite ('packable' vs conventional) and of the matrix system on the quality of the proximal contact area in Class II composite restorations. METHODS: A standardized DO cavity was prepared in 170 frasaco teeth. Two operators each filled 85 teeth in the same frasaco model using four resin composites [Solitaire (S), Surefil (Su), P60, Z100], three matrix systems [Automatrix (A), Palodent (P), Lucifix matrix (L)] and one hand instrument specially designed to achieve better proximal contacts [Belvedere Composite Contact Former (B)]. The teeth were subdivided into 17 groups (Z100/1-A, Z100/1-P, Z100/1-L, S-A, S-P, S-L, Z100/1-A-B, Z100/1-L-B, Su-A, Su-P, Su-L, P60-A, P60-P, P60-L, Z100/2-A, Z100/2-P, Z100/2-L). Each operator made five fillings of each group. The quality of the proximal contacts was assessed by measuring the maximum mesio-distal (M-D) diameter of the restored teeth using a digital micrometer and the tightness of the proximal contact area using standardized metal blades. All data were analyzed using two-way ANOVA and Bonferroni/Dunn's test for multiple comparisons with a significance level of P<0.05. RESULTS: Regarding the matrix system, a significant larger M-D diameter and a stronger proximal contact area was achieved with the Palodent matrix system. The use of the Belvedere Composite Contact Former together with Lucifix matrix and Automatrix contributed to significantly stronger proximal contact areas. Concerning the type of resin composite, no significant differences were noted for both evaluation criteria when Palodent was used. Using Automatrix or Lucifix matrix, the more condensable resin composite P60 scored slightly better than Surefil and Z100. There was no operator effect. Both operators underwent a learning process. The longer they worked with a specific material/technique, the better proximal contacts they achieved. SIGNIFICANCE: The best proximal contact areas in Class II composite restorations were obtained using a sectional matrix system. The 'packability' of the resin composite did not help to achieve better proximal contacts.