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计算机图像处理技术在前牙美学修复中的应用 总被引:2,自引:0,他引:2
目的探讨用计算机图像处理技术为患者制作美观的、符合个性特征的前牙修复体的过程。方法对13例需行前牙美学修复的患者拍摄修复治疗前及治疗中前牙图像,获取患者牙齿与周围软组织的美学信息,包括天然牙的形态、颜色、半透明度、个性特征,以及下颌息止位时和微笑时牙齿的切缘位置、龈缘位置等。分析美学信息资料后行美学修复设计,应用Photoshop 8.0软件制作修复预期效果图,指导技师制作修复体。结果完成13例患者的前牙美学修复,临床美学修复效果良好。结论将计算机图像处理技术应用于前牙美学修复设计,有助于医师和技师为患者制作美观的、符合个性特征的修复体。 相似文献
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修复后前牙美学临床评价与患者满意度关系的初探 总被引:5,自引:0,他引:5
目的试分析修复后前牙美学的临床评价与患者满意度之间的关系,为进一步提高患者满意度提供依据。方法选取个别前牙全瓷修复患者90例,修复后由患者本人评价患者满意度。由医师根据修复体的整体轮廓、表面形态质地、整体色调、颜色分布、切端半透明度、表面个体特征与邻牙的相似程度,对修复体进行分级。采用独立样本t检验或方差分析,分析各美学评价指标不同级别间患者满意度的差异。测量修复体与同名天然牙间的色差,分析其与患者满意度的相关关系。结果除整体色调“良”、“中”两个级别问患者满意度的差异无统计学意义外(P=0.553),其他美学评价指标不同级别间患者满意度的差异均有统计学意义(P〈0.05)。修复体与同名牙间的总色差、明度差的绝对值及△a的绝对值与患者满意度相关,Spearman相关系数分别为-0.434、-0.371、-0.406(P〈0.05)。结论修复后前牙各项美学特征的临床评价与患者满意度均相关,其中表面形态质地、颜色分布、表面个体特征与患者满意度的关系更密切。修复体与同名牙的总色差及明度差与患者满意度有一定的相关性。 相似文献
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上颌前牙种植美学修复的临床研究 总被引:4,自引:0,他引:4
目的:探讨上颌前牙种植美学修复的方法与效果。方法:选择30例上前牙缺失患者随机分实验与对照组,实验组15例常规植入种植体,牙槽嵴顶与唇侧植骨,二期术牙龈成形与重建,技师和比色仪相结合比色,贵金属烤瓷修复;对照组15例常规植入种植体,唇侧植骨,二期术牙龈成形,临床比色板比色,贵金属烤瓷修复;分别于种植修复后3、6、12月由医师/患者对修复体形态,色泽,牙龈形态,色泽,丰满度,龈缘曲线,牙间乳头,以及邻牙与对侧同名牙协调性进行美学评分,得出满意度。结果:实验组满意度87%,对照组33%;实验组不满意度7%,对照组53%。结论:上颌前牙种植美学修复方法可行,效果显著。 相似文献
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目的观察诊断蜡型指导瓷贴面美学修复前牙间隙的临床效果。方法对前牙间隙需要美学修复的62颗患牙,通过诊断蜡型进行医患的沟通交流后制作瓷贴面修复体。用视觉模拟评分法对患者的满意度进行评价。结果修复后患者对修复体美学效果的满意度评分为(9.5±0.3)分。随诊1年,瓷贴面的存留率为96%;13%的患者初期有轻度冷热刺激敏感,症状随时间的延长消失;7%的患者认为颜色或透光度略有不协调,但均能接受;2%的修复体龈缘出现轻微充血;96%的修复体边缘适合性良好。结论诊断蜡型指导前牙瓷贴面修复可获得满意的美学及修复效果。 相似文献
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目的探讨前牙烤瓷桥崩瓷后,以桥体为基桩制作烤瓷冠修复的可行性. 方法去除桥体上唇舌侧残留瓷体,精密预备桥体,取模,常规烤瓷冠修复.结果 9例前牙桥体烤瓷冠修复,经过1~5年观察,疗效满意.结论前牙桥体崩瓷后烤瓷冠修复是一种切实可行的方法. 相似文献
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目的评价瓷贴面在前牙美学修复中的临床效果。方法对65例要求前牙美学修复患者的135颗前牙进行瓷贴面修复,追踪18个月,观察修复体完整性、牙龈健康情况、颜色匹配度和术后修复后有无牙齿敏感,对修复效果进行评价。结果效果满意125颗,效果一般10颗,满意率为92.0%,成功率为100%。结论在严格选择适应证的前提下,瓷贴面在前牙美容修复中能取得良好效果。 相似文献
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《中国口腔医学信息》2005,14(4):95-95
应广大牙科医生和技师的要求,经卫生部批准,由南京大学医学院附属口腔医院举办的国家级继续教育项目第一期“全瓷修复体的设计与前牙的美学修复”学习班将于2005年9月6日~10日在南京举行,此次学习班将针对各种全瓷材料选择的适应证、瓷贴面等不同全瓷修复体的基牙预备要求、全瓷色泽的配色、牙龈的美学设计和龈缘“黑线”等临床中经常遇到的问题进行系列的讲学和示教。 相似文献
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目的:探讨口腔数码摄影技术和诊断模型联合应用在前牙美学修复中的临床效果和患者满意程度。方法:选取前牙美学修复患者36例随机分成实验组和对照组两组,每组18例,实验组在常规美学修复基础上联合运用口腔数码摄影和诊断模型技术,对照组采用常规美学修复,观察两组临床效果和患者满意程度。结果:实验组修复体几项观察指标(形态、边缘密合度和颜色色调)与对照组相比差异有统计学意义(P〈0.05),患者满意程度高于对照组(P〈0.05)。结论:口腔数码摄影和诊断模型联合运用技术为临床上前牙美学修复方法选择上提供一定的参考依据。 相似文献
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目的:探讨上颌前牙区应用多种种植美学修复方法的临床效果。方法:68例上颌前牙缺失的患者行即刻或延期种植,采用软硬组织增量或临时冠诱导等方法进行美学修复,评估修复2年后的种植成功率和软组织美学。结果:种植修复2年后的成功率为97.4%,种植修复体近远中Jemt牙龈乳头指数Ⅱ级以上者为93.4%。结论:根据患者自身条件,综合采用多种美学修复方法可使上颌前牙区种植义齿修复达到较满意的临床效果。 相似文献
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随着口腔种植技术的成熟和发展,越来越多的患者首选种植义齿修复缺失牙.前牙缺失常需要形态美观、结构稳定的暂时修复体来恢复种植手术愈合期内前牙的美观和功能.暂时性修复体有助于牙龈的成型和维持,有助于医技沟通,有助于获得患者对医生的信任.同时,依据暂时修复体使用反馈的信息可指导永久义齿的设计制作.因此,暂时修复体在种植修复中起重要作用.临床医生应掌握各类暂时修复体的优缺点,依据患者个性化需求和临床适应症,选择最合适的暂时修复措施,以达到保护种植体,恢复美观及功能的目的. 相似文献
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前牙美学参数喜好度的网络调查研究 总被引:1,自引:0,他引:1
目的:通过网络调查的方法研究不同人群对前牙美学参数的喜好程度。方法:使用图象处理软件得到数张不同的口腔区域数码图片,分别用于调查人们对以下两项美学参数的喜好:休息位时上中切牙的暴露量和牙齿的亮度。制作调查网页,将链接放置在北京大学口腔医院第二门诊部的主页,对结果进行统计,并使用卡方检验分析年龄职业等因素对受调查者选择的影响。结果:共收到提交的调查结果419份,其中绝大多数人认可休息位时上中切牙暴露4mm(50.1%)以及2mm(45.3%)。高学历人群更喜欢上中切牙暴露2mm,低学历组更喜欢上中切牙暴露4mm,口腔医生及相关职业的人群更倾向于上中切牙暴露2mm,而普通人更喜欢上中切牙暴露4mm。另外,高亮度以及原始亮度的牙齿比较受欢迎(55.1%)(42.0%)。而口腔医生及相关职业相对于普通人,更多的选择了原始的亮度,选择较明亮的少于普通人。结论:绝大多数人喜好亮度较高的牙齿以及休息位时上中切牙暴露2mm及4mm,口腔医生以及相关职业人群在选择休息位时上中切牙的暴露量、牙齿的明暗度时与普通人有差别。受教育程度的差异对休息位时上中切牙的暴露量的选择有影响。 相似文献
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张豪 《中国实用口腔科杂志》2011,4(8):461-464
前牙美学修复是近年来口腔医学的热点之一.前牙美学修复中,在关注外在美观程度改善的前提下,医生更要关注口颌系统的功能健康.本文从前牙的功能分析入手,对单个前牙、多个前牙和涉及前后牙修复过程中的咬合处理原则分层次进行了阐述. 相似文献
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董雯 《中国实用口腔科杂志》2012,5(1):22-30
本文着重介绍应用复合树脂对临床不同类型牙体美容缺陷进行美学修复的临床设计方案、洞斜面设计、牙体美学分层修复颜色设计理念与方法,并结合临床病例对修复过程中重要环节如口腔微笑分析、牙体比色、牙体预备、酸蚀、粘接、牙体修复、抛光修整等操作步骤及临床要点进行归纳、总结。旨在为临床医生合理应用复合树脂进行牙体修复,获得良好美学效果提供借鉴和帮助,以期共同努力提高复合树脂牙体美学修复水平。 相似文献
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Aim: To compare the immediate restoration of single implants in the esthetic zones performed on implants placed immediately after tooth extraction or 8 weeks later (immediate replacement vs. immediate restoration). Methods: Sixteen patients (10 women and 6 men) with a mean age of 35 years (ranging from 21 to 49 years old) were treated from 2004 to 2005 for single‐tooth replacement in the upper arch. The patients were randomly divided into two groups: in the test group patients received implants placed and restored (non‐occlusal loading) at the time of tooth extraction; in the control group implants were placed 8 weeks after tooth extraction and immediately restored. All the patients received tapered effect (TE) implants from the Straumann Dental Implant System. The following parameters were evaluated at the moment of provisional restoration (within 48 h after implant placement) and at the 2 years follow‐up visit: marginal bone resorption, papilla index, position of the mucosal margin. The implant stability quotient was measured at the moment of implant placement and at the moment of the delivery of the definitive restoration. Results: No statistically significant differences were found in any of the studied parameters between the test and the control groups (P>0.05). The implant stability quotient values between the test and control groups were significant (P<0.05) at the moment of implant placement but were no more significant at the loading of the definitive restoration (P>0.05). Conclusion: The results of the present study suggest that immediate replacement without functional loading may be considered a valuable therapeutic option for selected cases of single‐tooth replacement in the esthetic area when TE implants are used. Implant stability at the moment of implant placement is slightly inferior in the immediate replacement group, but it does not affect the treatment result. 相似文献
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过小牙多见于上颌侧切牙、第三磨牙。上颌侧切牙过小者人群中发病率为0.8%~8.4%,女性发病率较高,可能与常染色体显性遗传有关。上颌侧切牙过小表现为牙冠切端较颈部窄小,呈圆锥形,称为锥形牙,常影响美观和咬食功能[1]。前牙区过小牙影响美观,如有足够长度牙根,可 相似文献
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Stephen F. Rosenstiel BDS MSD Daniel H. Ward DDS Robert G. Rashid DDS MAS 《Journal of prosthodontics》2000,9(3):123-136
PURPOSE: This study aimed to determine dentists' esthetic preferences of the maxillary anterior teeth as influenced by different proportions. The goal was to link choices to demographic data as to the experience, gender, and training of the dentist. METHOD AND MATERIALS: Computer-manipulated images of the 6 maxillary anterior teeth were generated from a single image and assigned to 5 tooth-height groups (very short, short, normal height, tall, and very tall). For each group, 4 images were generated by manipulating the relative proportion of the central incisors, lateral incisors, and canines according to the proportions 62% (or "golden proportion"), 70%, 80%, and "normal" or not further altered. The images were randomly ordered on a web page that contained a form asking for demographic data and fields asking for a ranking of the images. Dentists were asked via e-mail to visit the web page and complete the survey. The responses were tabulated and analyzed with repeated measures logistic regression with the alpha at 0.05. A subset of North American respondents was chosen for further analysis. RESULTS: A total of 549 valid responses were received and analyzed from dentists in 38 countries. There were statistically significant differences in all groups for the variables of proportion, group (tooth height), and their interaction. The 80% proportion was judged best for the Very Short and Short groups. Three of the choices were almost equally picked for the Normal Height and Tall groups, and the golden proportion was judged best for the Very Tall group. The variables of year of graduation, gender, professional activity, generalist or specialist, or number of patients were not significantly correlated with the choices for the North American respondents. CONCLUSIONS: Dentists preferred the 80 percent proportion when viewing short or very short teeth and the golden proportion when viewing very tall teeth. Golden proportion was worst for normal height or shorter teeth and the 80% proportion for tall or very tall teeth. They picked no clear-cut best for normal height or tall teeth, and their choices could not be predicted based on gender, specialist training, experience, or patient load. 相似文献