A New Simplified Technique for Intermaxillary Fixation by Loop-Designed Wire

In the treatment of maxillofacial fractures, Inter-maxillary fixation (IMF) is an important. The upper and lower arch bars or Ivy eyelet wiring is secured by wires and IMF is done with the help of box wiring. Here, we present a new type of IMF technique, using 26-gauze stainless steel ‘loop-design’ wire, which is a simple, quick, economical and minimally invasive technique without using arch bars. Typical indications for its use are minimally displaced fractures, deep bite cases, stabilization of fracture during open reduction and internal fixation, orthognathic surgeries and in tumor resection surgeries.     

Esthetic Arch Bar for Maxillomandibular Fixation in Orthognathic Surgery

Arch bars are well-known dental appliances for the management of fractures and orthognathic surgery. Traditionally both the commercially available, prefabricated arch bars as well as the custom-made arch bars are made of metal so as to provide good rigidity. Each of these types of arch bars has its own advantages as well as drawbacks. This article looks at a type of custom-made arch bar that is easy to construct and use. At the same time, it provides good rigidity, fit, and esthetics.     

Intermaxillary Fixation with a Single Wire

Intermaxillary fixation (IMF) is required before plating to achieve premorbid relationship of mandibular and maxillary teeth. We recommended the use of single wire for achieving IMF using 24 gauze stainless steel wire, which is an easy, fast, economical and minimally invasive technique.     

在正颌外科中用钢丝固定和坚硬内固定后并发症的比较研究

对１００例正颌外科病人应用钢丝固定或坚硬内固定的结果进行了回顾性比较，分析了两组病人所有并发症的发生情况．研究中最明显的发现是两种方法的结果基本相同，但在并发症中术后６个月体重过度减轻（≥５ｋｇ）和张口受限（中切牙最大张口度≤３５ｍｍ）两组间有明显差异，钢丝固定组分别为３０％和２４％，明显高于坚硬内固定组的８％和４％，主要是由于应用坚硬内固定的病人可以术后早期进行下颌运动，有利于饮食和咀嚼肌、颞颌关节的功能锻炼，而使术后体重过度减轻和张口受限的比例明显减少．由于坚硬内固定并没有增加正颌外科并发症的发生，而显示许多优点，因此将被广泛接受和应用     

A Technique for Digital Impression and Bite Registration for a Single Edentulous Arch

Few studies have reported the application of digital technology for the process of impression and interocclusal recordings in edentulous patients. This article describes a digitizing system for generating digital edentulous models with a jaw relationship by taking direct digital impressions and a virtual bite registration using intraoral digital scanning. A specialized scan retractor was used to make digital impressions of edentulous jaws in patients’ mouths using an intraoral scanner. Virtual bite registration was obtained with optical scanning of the buccal surfaces of both jaws at the occlusal vertical dimension. The registration was then used as a reference for aligning both jaws. Digital edentulous models that include the jaw relationship would be clinically beneficial for the fabrication of complete dentures in edentulous patients.     

用扩弓和多曲方丝弓技术矫治反(牙合)伴下颌偏斜畸形

目的 探讨扩弓和多曲方丝弓技术在安氏Ⅲ类错(牙合)伴下颌偏斜矫治中的作用机理。方法 选择安氏Ⅲ类错(牙合)伴下颌偏斜患者8例,均采用上颌扩弓技术矫治单侧上颌后牙反(牙合),多曲方丝弓技术不同程度地直立后牙,调整后牙在三维方向的位置,并解除前牙的反(牙合),调整下颌中线。结果 8例Ⅲ类错耠伴下颌偏斜患者均取得良好的矫治效果,矫治后磨牙为中性关系,前牙覆(牙合)覆盖正常。结论 轻度及中度安氏Ⅲ类错(牙合)伴下颌偏斜畸形患者通过上颌的扩弓及多曲方丝弓矫治技术可有效地矫正磨牙关系及下颌偏斜。     

Screw and Wire Technique for Condylar Fracture Reduction

In case of displaced condylar fractures, ideal reduction during open reduction and internal fixation poses a challenge to the surgeon. This article describes a simple technique to aid reduction with the use of a screw and wire during open treatment.     

Retrieval Technique for Full‐Arch Implant‐Supported Fixed Prosthesis: A Clinical Report

In the event of the loss of an implant and to take advantage of the preexisting structures, a rescue procedure that allows continuous use of the original fixed restoration during the restoration of the tripod support at the implant level can be used. When nonphysiological occlusion forces are avoided, the success rate of this rescue procedure is very similar to any other rehabilitation made following a conventional protocol. Furthermore, the fact that the patient has already adapted to the prosthesis position and its vertical dimension results in easier functional adaptation in the postoperative period and, consequently, greater comfort.     

The Ocular Prosthesis: A Novel Technique Using Digital Photography

Loss of an eye can cause a significant psychological and emotional disturbance to any patient. An ocular prosthesis helps to re-establish the physical and mental well-being of the patient. This article describes a novel technique along with a case report for fabricating a predictable, esthetic and well-fitting custom-made ocular prosthesis in an attempt to avoid costly and time consuming procedures that may be required in other methods.

     

Wafer技术：一种骨重建的新方法

本研究介绍了基于引导骨组织再生技术与三维骨增量onlay植骨技术的一种新技术。这个技术分为两阶段：首先用自体皮质骨板与胶原膜形成屏障,再用该屏障将包括脱蛋白牛骨基质、自体血液与口内移植骨在内的混合物加以包裹。五位患者接受了该技术的治疗。术后6个月,可观察到平均骨体积增大值为1062mm³。平均最大线性增量为3.65mm。对再生区域进行组织学检查,可见有新生密质骨的形成,并不伴有炎症征象。共计13颗种植体被植入,所有患者均对效果表示满意,且未观察到并发症出现。     

多曲方丝弓技术矫治恒牙期骨性Ⅲ类错(牙合)的颌(牙合)面变化

目的对比多曲方丝弓(MEAW)技术矫治恒牙期骨性Ⅲ类错畸形前后患者颌面变化,了解MEAW技术矫治恒牙期骨性Ⅲ类错畸形的机理.方法选用0.46mm×0.64mm的托槽系统治疗骨性恒牙期Ⅲ类错畸形患者15例.测量矫治前后患者的正中位定位X线头颅侧位片并进行比较.结果L6-Xi减少2.87 mm,L6/MP曾大8.60°,L1-Xi减少2.60mm,OP/MP增大约2.33°.颌骨变化较小.软组织的变化无统计学意义.结论①MEAW矫治恒牙期骨性Ⅲ类错畸形,主要是通过牙齿的移动和牙槽骨的改变而完成的,骨组织及软组织变化是有限的.②MEAW纠正反 ,首先是由于磨牙的明显直立、远中移动,使磨牙关系得到明显改善,为下前牙舌向移动提供了宝贵的间隙.③下前牙在舌向移动与倾斜同时略有升高, 平面变平.     

Comparative Evaluation of the Resin Bonded Arch Bar Versus Conventional Erich Arch Bar For Intermaxillary Fixation

Purpose  

Application of Erich arch bar with the help of circumdental wires for intermaxillary fixation is most widely accepted method for mandibular fractures. However, circumdental wires causes injury to periodontium. There is always fear of inadvertent injury by wire ends and chances of serotransmission of blood born viruses to the operator thus, we want to use the safest method of intermaxillary fixation avoiding use of circumdental wires.     

MEAW技术在正畸末期精细调整的应用

目的 :探讨多曲唇弓技术在正畸矫治末期精细调整的作用。方法 :选择拔牙矫治病例 8例 ,非拔牙病例 4例 ,均在矫治末期存在轻度的咬合紊乱。使用方丝弓及国产直丝弓矫治器 ,经过排齐、整平、关闭拔牙间隙 ,最后使用多曲方丝弓矫治前、后牙的局部开牙合、磨牙轻度近中、远中关系 ,尖牙尖对尖关系 ,上下中线不齐等局部错牙合。结果 :12例病人平均两个半月时间达到较理想效果。结论 :可将多曲方丝弓技术应用于正畸末期的精细调整 ,操作准确、效果稳定     

片段弓和种植支抗滑动关闭间隙两种方法同时压入内收上前牙的临床研究

目的：比较两种临床矫治技术：片段弓,种植支抗滑动关闭间隙压入和内收上前牙的临床效果分析。方法：临床筛选18例患者,使用片段弓技术同时压入内收上前牙。筛选19例患者使用种植支抗滑动关闭间隙技术同时压入内收上前牙。头影测量描记上前牙,上颌第一磨牙的位置变化。使用根尖片测量根尖吸收的情况。结果：两组间比较发现下列测量指标有显著性减小变化：U1-SN,覆盖,覆（牙合）,PP-U1,U1horizontal,UL-U1。相比种植支抗组,片段组的病例中如下头影测量指标有显著性增加：U6angle,MP-SN,PP-U6,U6Horizontal。压入内收上前牙的所需时间和根吸收在两组比较中没有显著性差别。结论：种植支抗滑动关闭间隙的临床治疗方法能够有效地压入内收上前牙。和传统片段弓压入内收上前牙相比,种植支抗在矢状向,垂直向都能够有效地维护上磨牙原有的位置。     

三段弓技术与微种植支抗技术压低和内收上切牙效果的对比研究

目的：对比两种不同技术-三段弓技术与微螺钉支抗滑动技术,在正畸治疗过程中产生的牙齿以及骨骼的效应差异。方法：对三段弓技术组的18例患者以及微螺钉支抗组的19例患者均进行切牙的内收和压低,分析测量所有患者的头颅定位侧位片以评估两种技术的差异。在水平和垂直方向上对两组患者上颌第一磨牙的移位和相对骨骼改变进行分析。同时在根尖周X光片上对牙根吸收进行测量。结果：U1-SN（P〈0.05）,覆盖、覆、PP-U1、U1水平移动（P〈0.01）,UL-U1（P〈0.05）,在三段弓组和微螺钉支抗组均有明显减小。然而,在三段弓组,U6角度（P〈0.01）,MP-SN、PP-U6（P〈0.05）和U6水平移动（P〈0.05）,与微螺钉组相比均有显著增加。两组的治疗周期及牙根吸收率无显著性差异。结论：采用反Spee曲线弓丝的微螺钉支抗滑动技术,被证明是有效地的内收并压低上颌前牙的口内支抗增强装置。与三段弓技术相比,微螺钉技术在水平（前后向）或垂直方向均未见支抗丧失。