CAMLOG and Science

CAMLOG&Science – Chapter 2 ROTATIONAL FIT: COMPARISON OF IMPLANT SYSTEMS Edinger et al. (2007) performed an in vitro investigation of the rotational fit of the Astra Tech, CAMLOG ® , OSSEOTITE ® Certain, Brånemark and Replace™ Select implant systems. Depending on the fastening of the abutment on the implant (manually, 30 Ncm, left stop, right stop), a range of rotational play was measured from 0.46° to 3.50°. The CAMLOG ® Implant System demon- strated a favorable range of rotational play with only 0.46° to 1.20° (Fig. 5). In addition, Edinger et al. (2007) studied the rotational play between the abutment and the superstructure. It is less than the rotational play between the abutment and the implant or the model analogue (range: 0.6°). Therefore, the play between the abutment and the implant or the model analogue is clinically relevant. The authors concluded that the rotational play of all investigated implant systems – independent of the connection type – is the source of defect. They deduced from the test set-up that the superstructure can compensate for malposition of the abutment on the implant at best to a certain degree. This means for the dental technician: The more precisely he works, the greater the probability that problems will occur at the try-in. In other words: The more precisely the dental technician works, the less the rotational play of the components must be. Fig. 5: Box plot of the rotation angle of the individual implant types for each of the four measuring methods: manual, 30 Ncm, left stop, right stop. (Edinger et al. (2007) reproduced with kind permis- sion of BDIZ EDI). left stop right stop manual 30 Ncm type