Tolerance within the sleeve inserts of different surgical guides for guided implant surgery

Abstract

For a minimal deviation during the surgery with a stereolithographic guide, it is very important to use the drill in a centric position, parallel to the cylinder. The use of longer drill keys and sleeves are critical for optimal accuracy.

The use of first stage bone augmentation screws to stabilize the surgical template in the second stage

“…This has already been discussed extensively. 5,9,10 As expected, larger deviations were found at the implant tip as compared to the implant shoulder, as the latter lies closer to the surgical template and is therefore less influenced by deviations caused by the play between the different drills, drill guides, and surgical template. Deviations in the buccolingual direction were larger than in the mesiodistal direction.…”

An Accuracy Study of Computer‐Planned Implant Placement in the Augmented Maxilla Using Mucosa‐Supported Surgical Templates

“…From patient scan to validation of implant accuracy, many factors of inaccuracy are introduced in the stages of image acquisition, image processing and planning, the production of surgical templates, during implant placement, and in the validation process …”

“…With regard to surgical instruments used during implant placement, most authors agree that deviations are introduced because of discrepancy between the template sleeve, drill guide, and drill, which is needed to prevent too much friction between the instruments. Koop and colleagues and Van Assche and Quirynen notice that a parallel and central positioning of the drill guide is crucial. However, a limited mouth opening might cause the drill head to be inclined more mesial or palatinal …”

A novel conversion method for radiographic guide into surgical guide

“…The freedom of movement of the drill inside the sleeve is occurred due to the tolerance between the drill and the sleeve, and it causes lateral linear displacement and additional angle. To achieve minimal deviation during implant surgery, the drill position should be centric and parallel to the sleeve . In this study, a Nobel surgery kit (WP system) was used, and a larger PE value of the drill point can be interpreted as the stability of the initial drill entry being affected by the sleeve tolerance.…”

“…The clinical test was approved by the hospital research ethics committee and the Institutional Review Board (IRB: KAFGH 104‐40). The accuracy of surgical guide is generally interfered by the occlusion environment, especially limited mouth opening. Thus, two groups of different levels of index rods of radiographic guide were designed to verify the GCM guide in implant surgery.…”