Using transitional implants as fixation screws to stabilize a surgical template for accurate implant placement: a clinical report

This article describes a method of using transitional implants as surgical fixation screws to orient a surgical template predictably during the placement of implants in the anterior mandible for an implant-supported bar-retained overdenture. Ridge reduction, transitional implant placement, implant placement, and removal of the transitional implants were completed in a single surgical appointment. Details of the template fabrication, incorporating transitional implants and surgical techniques, are described.     

Accuracy of implant placement with a stereolithographic surgical guide

PURPOSE: Placement of dental implants requires precise planning that accounts for anatomic limitations and restorative goals. Diagnosis can be made with the assistance of computerized tomographic (CT) scanning, but transfer of planning to the surgical field is limited. Recently, novel CAD/CAM techniques such as stereolithographic rapid prototyping have been developed to build surgical guides in an attempt to improve precision of implant placement. However, comparison of these advanced techniques to traditional surgical guides has not been performed. The goal of this study was to compare the accuracy of a conventional surgical guide to that of a stereolithographic surgical guide. MATERIALS AND METHODS: CT scanning of epoxy edentulous mandibles was performed using a cone beam CT scanner with high isotropic spatial resolution, while planning for 5 implants on each side of the jaw was performed using a commercially available software package. Five surgeons performed osteotomies on a jaw identical to the initial model; on the right side a conventional surgical guide (control side) was used, and on the left side a stereolithographic guide was used (test side). Each jaw was then CT scanned, and a registration method was applied to match it to the initial planning. Measurements included distances between planned implants and actual osteotomies. RESULTS: The average distance between the planned implant and the actual osteotomy was 1.5 mm at the entrance and 2.1 mm at the apex when the control guide was used. The same measurements were significantly reduced to 0.9 mm and 1.0 mm when the test guide was used. Variations were also reduced with the test guide, within surgeons and between surgeons. DISCUSSION: Surgical guidance for implant placement relieves the clinician from multiple perioperative decisions. Precise implant placement is under investigation using sophisticated guidance methods, including CAD/CAM templates. CONCLUSION: Within the limits of this study, implant placement was improved by using a stereolithographic surgical guide.     

A surgical guide for implant placement.

Mounted diagnostic casts aid in determining whether sufficient space exists for a fixed cantilevered implant prosthesis. These casts are also used to construct a surgical guide. Such a technique is described.     

Trajectory surgical guide stent for implant placement.

This article describes a new implant placement surgical guide that gives both implant location and trajectory to the surgeon. Radiopaque markers are placed on diagnostic dentures and a lateral cephalometric radiograph is made that shows the osseous anatomy at the symphysis and the anterior tooth location. The ideal implant location and trajectory data are transferred to a surgical stent that programs the angle and location of the fixtures at time of surgery. The stent has the additional benefit of acting as an occlusion rim, a mouth prop, and tongue retractor. Use of this stent has resulted in consistently programming the placement of implant fixtures that are prosthodontically ideal.     

种植导板精度非放射学评价方法的建立与应用评价

目的: 利用数字化印模技术建立种植导板精度的非放射学评价方法,评估体外全程导航手术的种植精度。方法: 利用3Shape Implant Studio软件,在15个相同的缺牙树脂模型中设计2颗平行种植体位点,生成并打印相应的数字化种植导板并在导板全程导航下植入2颗种植体。术后分别以传统放射学方法及数字化印模杆、口内扫描仪、通用逆向工程软件构成的数字化评价方法检测每组种植体偏移情况,采用SPSS 23.0软件包进行数据分析。结果: 以数字化评价方法得到的全程种植导板平均精度为肩部偏差0.447 mm,根尖部偏差0.557 mm, 角度平均偏差1.134°。与传统放射学评价方法相比,2种评价方法在距离偏差方面无统计学差异（P>0.05）;在角度偏差分析中,数字化评价方法更优（P<0.05）。种植体偏差多集中在冠根方向,且根尖偏移较颈部偏移更明显。结论: 与放射学评价手段相比,数字化非放射学评价方法可准确评价种植精度,有效减少患者辐射暴露。     

Simplistic partially limiting surgical guide for flapless implant placement: a case report

The accurate positioning of implant in bone is important in order to meet the biological, esthetic, and biomechanical requirements of the prosthesis. This becomes crucial in flapless implant placement. The combination of bone sounding and use of a surgical guide will allow precise placement of a dental implant, abutment, and provisional restoration in a minimally invasive manner. A technique to transfer the diagnostic information to the surgical guide is described in this report. The chief advantage of the procedure is the ability to apply flapless implant placement surgery and immediate loading.     

Fabrication of a guide for radiographic evaluation and surgical placement of implants

The use of guides for radiographic evaluation and surgical placement of dental implants can improve the final outcome of treatment for patients receiving implants. This article describes a technique in which a guide is fabricated for radiographic evaluation of implant placement and also serves as a surgical guide for placement of the implants for a patient with severely worn dentition.     

Development and clinical application of a surgical guide for optimal implant placement

Implant placement based on careful preoperative planning is critical for successful prosthetic rehabilitation. This article describes a system for optimal implant placement that uses a surgical guide designed to orient the surgical drills to predetermined implant positions and inclinations.     

种植义齿手术误差测量方法建立

目的:建立一种种植义齿手术误差测量分析方法.方法:14例患者,男性5例,女性9例,平均年龄40.9岁,24颗种植体.利用快速成型技术加工患者工作模型进行模拟手术,植入种植体安装愈合基台,制作手术导板并进行种植手术,整合模拟手术和种植手术术后CT图像数据.计算拟合生成愈合基台中心线作为术前设计种植体的轴线,轴线与愈合基台...     

A surgical guide for dental implant placement in edentulous posterior regions

Proper implant placement is crucial for successful implant-supported restorations. This article describes a simple technique for fabricating a vacuum-formed surgical guide to assist in dental implant placement in edentulous posterior regions.     

Use of primary tooth as a surgical guide in implant insertion: a case report

A variety of surgical templates are being used routinely in implant dentistry to guide a surgeon in proper implant insertion. One additional technique is being suggested in this article. It relates to the placement of a dental implant immediately after extraction of the retained primary molar, using the crown of the deciduous tooth as a surgical guide for implant insertion. The clinical case and related technique are presented in this article.     

Modular transitional implants to support the interim maxillary overdenture

It has been reported that for implants to become osseointegrated, they must heal in the absence of functional loads for 4 to 6 months. To address the need for undisturbed healing and patient demand for uninterrupted immediate function and esthetics, the Modular Transitional Implant and Prosthetic System has been developed. This case report describes the use of transitional implants to support a removable maxillary overdenture, including methodology and the advantages and disadvantages of the system. The histomorphometric analysis of one of these transitional implants and its surrounding osseous tissue showed a 45% bone-to-implant interface after 6 months of functional loading. The transitional implant system is a sound and economical method of immediate patient restoration that allows for the protected healing of submerged implants.     

The use and fabrication of a self-retaining surgical guide for controlled implant placement: a technical note.

A technique for using a surgical guide construction with a self-retaining feature, which has proven to be a significant improvement for stage 1 surgical procedures, is described. This design is more convenient to use than previously described occlusal extension splints. It maintains the concepts for ideal fixture placement that have proven so valuable in creating both a functionally and esthetically uncompromised prosthesis supported by implants.