In vitro comparison between computer-assisted static implant surgical guides with & without sleeves.

Abstract

The present study aims to compare the difference between implant surgical guiding cylinders with sleeves (S Group) and without sleeves (S0 Group) to study heat generation, surface changes and accuracy. Implants of 4 × 10mm diameter were placed bilaterally on a model using the surgical guides. Accuracy in terms of angle deviation (in degrees) using DICOM files, surface wear of the guiding cylinder before & after drilling (in microns) using an optical video measuring machine and heat generation (in Celsius) using a PT100 probe was measured in real-time during drilling. Differences were compared using Student's t-test Preoperative & postoperative changes in the surface of the guiding cylinder were statistically significant (p=0.000405) with lesser changes noted in the guiding cylinder with sleeves. Similarly, temperature changes were highly significant (p=2.01 × 10−5) with a greater increase in temperature noted in the cylinder with sleeves. However, the changes in angle deflection were not statistically significant buccolingually or mesiodistally. Sleeveless guides give the advantage of the ease of fabrication, reduction in cost & customized changes in the guiding cylinder, that can be made in the posterior region by giving a cutback for easy access. Given the above findings, it can safely be suggested that the use of sleeveless guides can be incorporated in daily use since there is no significant change in the angle deflection of implant placement, thus giving equally predictable results in guides without sleeves.