Targis瓷聚体用于后牙嵌体修复的临床评价

目的 对Targis瓷聚体用于后牙嵌体修复进行临床评价。方法 采用口外间接法，用Targis瓷聚体对113例后牙进行嵌体及高嵌体修复，分别于6个月、12个月、18个月进行复查，采用改良的USPHS标准进行临床评价。结果 Targis瓷聚体嵌体修复的边缘密合性、色调协调性1边缘着色、继发龋、表面质地等几项指标在18个月后无显著性改变；患者敏感性在12个月后全部消失，与术后即刻相比有显著性差异。结论 口外间接法使用Targis瓷聚体可作为后牙嵌体修复的一种可行的方法。     

CAD/CAM全瓷高嵌体修复根管治疗后牙体缺损的临床评价

目的:采用瓷睿刻计算机辅助设计与制作(CAD/CAM)系统制作全瓷高嵌体修复根管治疗后的后牙牙体缺损,观察其1年期床疗效。方法::选取46例根管治疗后的后牙,使用瓷睿刻(CEREC)系统,IPS e.max CAD材料,制作全瓷高嵌体,双固化树脂水门汀粘结。修复后1年,采用改良USPHS标准对修复体、牙体、牙周等各方面指标进行评价,同时评价患者满意度。结果:87 ％的修复体各项检查标准都达到了USPHS 标准A类,患者满意率92％。CEREC 全瓷高嵌体1年期疗效确切。结论:使用瓷睿刻(CEREC)系统制作的 IPS e.max CAD全瓷高嵌体可作为根管治疗后后牙牙体缺损的有效修复方案。     

Two-Step Provisional Technique for Onlay Preparations

Compared to full crown temporization, direct autocured resin provisional technique for intracoronal onlay preparations is more complicated and less predictable. Clinical concerns include possible pulpal irritation, extra chair time for contouring proximal and marginal excess, and a critically short time constraint to remove the curing resin in the "rubbery stage" to avoid distortion or "locking" into the preparation. A two-step direct technique using two new light-cured provisional resins addresses these problems. First, a light-cured, elastic resin is condensed against the internal preparation walls and confined within a wedged metal matrix band. Then, using a clear template matrix, the elastic foundation is overlaid with a strong and esthetic light-cured provisional resin.     

Ceramic Restorations for Posterior Teeth: Guidelines for the Clinician

Abstract: Metal-free ceramic restorations are increasingly popular for restoring posterior teeth. These restorations are generated through a variety of techniques (e.g., CAD-CAM, copy-milling, heat-pressing, and firing). When appropriately indicated and made, ceramic inlays or onlays can be reliable and provide a highly serviceable restoration. The aim of this article is to review and present updated information regarding indications, restorative technique, and maintenance for this class of restorations, with emphasis to fired ceramic inlays or onlays. The information presented is based on 15 years of controlled clinical experience with this category of restorations. Clinical cases that represent some applications also are presented.     

"香肠技术"在下颌后牙区水平向骨增量中的临床疗效分析

目的:评估"香肠技术"(sausage technique)在下颌后牙区应用的临床疗效.方法:在下颌后牙区选择水平骨宽度不足5 mm的患者24例,应用"香肠技术"进行骨增量.种植体植入后6个月时统计种植成功率、生物学并发症、稳定性系数(ISQ值),测量植骨术后6个月时骨增量及骨吸收率.结果:49颗种植体成功率100％,所有病例无并发症发生.种植后6个月ISQ值增加.植骨术后水平向骨量较术前有明显的改善,6个月时骨吸收率(35.90±8.10)％.结论:本回顾性临床研究显示,应用"香肠技术"进行骨增量可以取得较好的临床效果.     

Ceramage聚合瓷嵌体在后牙牙体缺损修复中的应用

目的:研究Ceramage聚合瓷嵌体用于后牙牙体缺损修复的临床疗效.方法:前磨牙及磨牙Ⅱ类洞患者130例(共165颗)随机分为两组:制作Ceramage聚合瓷嵌体85件、IPS Impress Ⅱ铸瓷嵌体80件做为对照.随访2年,比较两组嵌体颜色、形态、边缘密合度、基牙继发龋、修复体折裂、牙龈指数、菌斑指数等指标.结果:两组嵌体在颜色、形态、边缘密合度、基牙继发龋、牙龈指数、菌斑指数等指标上无显著性差异;在修复体折裂方面,Ceramage聚合瓷嵌体组优于IPS Impress Ⅱ铸瓷嵌体组.结论:Ceramage聚合瓷嵌体是一种较好的新型牙体缺损修复体.     

The Porcelain Inlay Technique for Posterior Restorations

A method of restoring a stable posterior occlusion using the porcelain inlay technique is discussed.     

间接法树脂高嵌体修复磨牙残冠的临床评价

目的:评价间接法树脂高嵌体修复磨牙残冠的临床效果。方法:分别应用HRi美塑树脂通过间接法制作树脂高嵌体和直接法树脂充填修复68颗磨牙残冠的邻牙合面龋损,分别在修复后6、24、36个月随访,对边缘密合、邻接关系、牙周健康及修复体完整性等临床修复效果进行统计学分析并给予评价。结果:第6个月时两组无差别;第24个月时,两组除了在邻接关系方面嵌体组要优于直接组外(P<0.05),其余方面并没有明显差别;但在36个月时,用间接法树脂高嵌体修复的患牙在边缘密合、邻接关系及牙周健康方面与直接法修复有显著性差异(P＜0.05)。结论:应用间接法树脂高嵌体修复磨牙残冠能获得更好的临床修复效果,更能符合不同层次患者的功能及美学需求。     

Indirect Porcelain Veneer Technique for Restoring Intrinsically Stained Teeth

Indirect porcelain veneers are often the ideal restoration for intrinsically stained teeth. This article details a step-by-step procedure for esthetically restoring discolored teeth. Porcelain laminate veneers are often indicated when teeth bleaching or direct composite bonding procedures cannot provide the desired esthetic result. Veneers are more appealing to many patients than full coverage crowns because of the more conservative tooth preparation required. If technique details are followed meticulously and cases are appropriately selected, porcelain veneers are not only durable but also promote marvelous gingival health and may be the most esthetic anterior dental restoration.     

Early Designs for the Occlusal Anatomy of Posterior Denture Teeth: Part III

Part III of this series of articles, like Part II, reviews the pioneering efforts in the 19th century to improve the quality of artificial teeth. The focus of this article, unlike that of Part II, is specifically modifications in the design of the occlusal anatomy of the 19th century denture teeth, along with the theories of mandibular movement that inspired those modifications. This article concludes the introductory phase of this project, which seeks to unravel the confusing history of the development of (posterior) denture teeth.     

Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery

Introduction

The present study aimed to anatomically assess mandibular posterior teeth using cone-beam computed tomographic (CBCT) imaging for endodontic surgery.

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。     

Case Reports in Maxillary Posterior Teeth by Guided Endodontic Access

The localization of partial or completed root canal obliteration is a challenging task in endodontic practice. Recently, guided endodontics has become an alternative solution for those cases. Although this technique has already been used clinically in managing anterior teeth, in this report, we describe 3 complex clinical scenarios of calcified root canals of 1 molar and 2 premolars using guided endodontics. The clinical cases reported here show that technological evolutions should make guided endodontic procedures more widespread because their execution is relatively fast and safe even in the case of the upper molar. Additionally, 12-month clinical follow-up visits showed the effectiveness of the guided endodontic procedures.     

应用Tip-back装置直立后牙的临床研究

目的 :为了解决临床正畸中常见的后牙近中倾斜 ,重新获得支抗及随之出现的间隙不足 ,牙列拥挤 ,或牙源性反颌 ,后牙近中阻生等问题 ,我们进行了应用Tip -back技术直立后牙的临床研究。方法 :我们选择了 13例需要直立后牙的非高角病例 (下颌平面角 <30°) ;其中 ,男 6名 ,女 6名 ,和 1例下颌单侧第二磨牙阻生的病例。平均年龄 15 .6岁 ,采用Tip -back技术直立后牙。结果 :13例病例经过Tip -back的作用 ,后牙达到完全直立 ,平均时间在 3个月左右。Tip -back能够有效直立 ,并远中倾斜移动后牙。 结论 :Tip -back技术是一种很有效的远中倾斜后牙技术。