Scanning Electron Microscope Analysis of Adhesively Bonded T | 5075

Journal of Research in Medical and Dental Science
eISSN No. 2347-2367 pISSN No. 2347-2545

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Scanning Electron Microscope Analysis of Adhesively Bonded Two-piece Abutments versus One-piece CAD/CAM Zirconia Abutments

Author(s): Ali-Reza Ketabi, Sandra Ketabi, Bernd Helmstadter, Hans-Christoph Lauer, Martin Brenner


Objectives: The aim of this study was compare two CAD/CAM zirconia abutments (1-piece abutment versus 2-pieces adhesively bonded abutment) for contamination, traces of processing and microscopic gaps.

Material and methods: Three groups consisting of five identical abutments were cleaning with a steam jet and ethanol and then scrutinized by a scanning electron microscope (LEO 1530 VP; Oberkochen, Germany). The first group (1) contained individual CAD/CAM abutments (Atlantis™; Dentsply Implants, Mölndal, Sweden); the second group (2) contained adhesive bases before they were connected to their copings (Astra Tech Cast Design 4.5; Dentsply Implants) while the third group (3) contained the same adhesive bases but with a zirconia coping attached (Ceramill ZI; Amann Girrbach, Pforzheim, Germany).

Results: All abutments in groups 1 and 3 and 4 out of 5 abutments in group 2 were found to be contaminated. Traces of processing were found only on the abutments in group 3. No microscopic gaps were present in groups 1 and 2. All 2-piece abutments in group 3 exhibited extensive bonding gaps that were unfilled, measuring 213 to >3,000 μm horizontally and 42 to 101 μm vertically.

Conclusions/Clinical relevance: Both the instances of contamination and the microscopic gaps of the 2-piece abutments could cause damage to the hard and soft tissues around the implant. This topic would merit further investigation.


Share this article