多媒体技术在下颌阻生智齿能集成系统中的应用（2）

本文详细介绍下颌阻生智齿智能集成系统中的多媒体教学分系统中动态图片的制作与实现及声音的制作与播放。     

多媒体技术在下颌阻生智齿智能集成系统中的应用(2)

本文详细介绍下颌阻生智齿智能集成系统中的多媒体教学分系统中动态图片的制作与实现及声音的制作与播放.     

面向对象的下颌阻生智齿智能集成系统研究

本文介绍了实时处理与多媒体相结合的下颌阻生智齿智能集成系统的组成、结构、功能及实现方法。     

下颌阻生智齿的外科矫治

下颌阻生智齿的外科矫治承德医学院附属医院口腔颌面外科王笑茹，霍峰，陈新我们自１９８９年开始，对３２例下颌前倾阻生智齿采取了手术矫正加羟基磷灰石微粒人工骨（ＨＡ）植入，报道如下。临床资料３２例中，男１８例，女１４例；１８～３５岁２４例，３６～５０岁８例...     

下颌阻生智齿的手术矫正

笔者从１９９２年开始,对５３例下颌前倾阻生的第三磨牙进行了挺正＋调牙合的矫正手术,经２～５年门诊随访,现报道如下：一、资料与方法１．资料均来自本院门诊,患者年龄２０～４８岁。其中２０～２５岁２１例;２６～３０岁８例;３１～３５岁１１例;３６～４０岁８例;４１～４５岁４例;４６～４８岁１例。男性３１例,女性２２例。５３例患者中８｜、｜８阻生分别为１７例、３６例。２．术前准备：拍阻生齿Ｘ线片,了解阻生程度,有无分根及根有无明显弯曲;测量远中牙槽嵴至前邻牙远中面之间的距离,阻生智齿牙体总长度及复位所需…     

地塞米松在下颌阻生智齿拔除术中的临床应用

面部肿胀是下颌阻生智齿拔除术后常见的并发症 ,一方面 ,可引起张口受限 ,另一方面也影响患者颜面部的美观 ,增加了患者术后的恐惧心理。我院口腔科自 1 997年 8月～ 2 0 0 1年 3月对下颌阻生智齿拔除患者 ,给予术后加服地塞米松片剂 ,对预防或减少术后面部肿胀取得了良好的疗效。1　临床资料1 .1　病例选择门诊收集双侧智齿均阻生的患者 ,且双侧阻生类型近似和需要同样的手术难易程度 ,术前均消除冠周炎症。共 42例 84个阻生智齿 ,其中男 2 6例 ,女 1 6例 ,年龄 1 9～ 42岁 ,平均年龄 2 7岁。依患者要求及随机的原则 ,一侧拔除术后加服地塞…     

140例下颌阻生智齿牙根形态观察

下颌智齿阻生率高,常引起冠周炎、颌面部间隙感染、患牙及邻牙龋坏等并发症而需拔除。由于该牙位于口腔后部,加之其牙根形态多变,阻生方式多样而增加了拔除难度,使之成为牙拔除术的主要难点之一。本文对140例下颌阻生智齿的牙根形态进行观察,旨在了解下颌阻生智齿牙根形态与其阻生类型、拔牙断根发生之间的关系。     

下颌阻生智齿预防性拔除问题的探讨

下颌阻生智齿预防性拔除问题的探讨ＡＮＡＬＹＳＩＳＯＦＰＲＥＶＥＮＴＩＯＮＥＸＴＲＡＣＴＩＮＧＩＭＰＡＣＴＥＤＭＯＴＡＲＯＦＭＡＮＤＩＢＬＥ王友山胡顺广作者单位：汕头市中心医院口腔科（５１５０３１）下颌阻生智齿是临床上最多见的阻生牙，可引起多种并发症，...     

青少年下颌智齿阻生临床分析

目的：了解学生下颌智齿的病因与临床诊治特点,方法：制定下颌阻生智齿情况调查表,临床诊治过程中调查患者的性别、发病年龄、阻生分类及处理结果。结果：300例学生患者共调查下颌阻生智齿346例颗,患者最小年龄16岁,最大年龄24岁,近中阻生占61．8％;智齿拔除率为26．6％,结,下颌第二磨牙远中距离不足不是主要致病因素。智齿萌发有提早趋势。     

下颌阻生智齿致邻牙牙髓炎的治疗

临床上下颌阻生智齿常致冠周炎，也可导致邻牙远中面和颈部龋、远中根吸收，乃至发展成牙髓炎，现略谈对此如何进行合理治疗的体会。１临床资料１．１病例选择选择智齿致第二磨牙牙髓炎１２例（男８例，女４例），年龄１９岁～２７岁，智齿无龋病，均为近中斜位阻生，Ｘ线...     

动态导航系统在口腔治疗中的应用及误差控制

动态导航系统基于三维成像、虚拟设计与追踪技术,将术前设计精准地呈现,并实时反馈术中信息,提高了口腔治疗的精准度和效果的可预期性.本文就动态导航技术的原理、基本流程及其应用作一简述.     

Additive Technology: Update on Current Materials and Applications in Dentistry

Additive manufacturing or 3D printing is becoming an alternative to subtractive manufacturing or milling in the area of computer‐aided manufacturing. Research on material for use in additive manufacturing is ongoing, and a wide variety of materials are being used or developed for use in dentistry. Some materials, however, such as cobalt chromium, still lack sufficient research to allow definite conclusions about the suitability of their use in clinical dental practice. Despite this, due to the wide variety of machines that use additive manufacturing, there is much more flexibility in the build material and geometry when building structures compared with subtractive manufacturing. Overall additive manufacturing produces little material waste and is energy efficient when compared to subtractive manufacturing, due to passivity and the additive layering nature of the build process. Such features make the technique suitable to be used with fabricating structures out of hard to handle materials such as cobalt chromium. The main limitations of this technology include the appearance of steps due to layering of material and difficulty in fabricating certain material generally used in dentistry for use in 3D printing such as ceramics. The current pace of technological development, however, promises exciting possibilities.     

代谢组学在牙周病学中的应用

牙周炎是一种以牙周组织破坏为特征的慢性炎症性疾病,牙菌斑生物膜是其发病的始动因子,此外牙周炎还受局部促进因素的影响和全身因素的调控,但其具体的发病机制尚不完全清楚。近年来,随着代谢组学的兴起和发展,探索牙周疾病的致病过程和机理有了新的切入点。本文就代谢组学的概念、特点、检测手段以及代谢组学技术在牙周病学中的应用作一综述。     

Applications of xeroradiography in dentistry

Xeroradiography is the technique in which electrostatically charged plates sensitive to X-rays are used in diagnostic radiology in place of conventional film. Comparison between these different types of radiographs of both lateral skull and lateral oblique mandibular projections shows xeroradiography to have many advantages. Hard and soft tissue details are more clearly defined and visible on the same picture. Radiation dosage is slightly less and this, combined with the need for fewer exposures, reduces the incident skin dose to the patient. The plates are re-usable and the process requires no silver.These factors strongly suggest that xeroradiography may be of great value in routine dental radiology and further investigation is in progress.