TY - JOUR
T1 - Evaluation of microgap with three-dimensional x-ray microtomography
T2 - Internal hexagon versus cone morse
AU - Scarano, Antonio
AU - Mortellaro, Carmen
AU - Mavriqi, Luan
AU - Pecci, Raffaella
AU - Valbonetti, Luca
N1 - Publisher Copyright:
Copyright © 2016 by Mutaz B. Habal, MD.
PY - 2016
Y1 - 2016
N2 - Background: Microgap is defined as the microscopic space that exists between the implant body and abutment. The main mechanism proposed for microgap-related crestal bone loss is the role of this space as a trap for bacteria and thus, as a putative etiological factor for inflammatory reaction in the peri-implant soft tissues. The aim of this paper was to evaluate, with X-ray 3D microtomography, the microscopic space that exists between the implant body and abutment with internal hexagon versus cone morse. Methods: A total of 20 implants were used in this in vitro study. Ten implants per group were used. Ten implants presented a screw retained internal hexagon abutment (Group I) and 10 had a Cone Morse taper internal connection (Group II). Results: In both types of Cone Morse internal connection implants there was no detectable separation at the implant/abutment in the area of the conical connection, and there was an absolute congruity without any microgaps between abutment and implant. No line was visible separating the implant and the abutment. On the contrary, in the internal hexagon screwed abutment numerous gaps and voids were present between the implant body and abutment. Conclusion: The results of the present study seem, then, to support the hypothesis that the length and the characteristics of the implantabutment joint could be a reason for the observed differences in mechanical stability.
AB - Background: Microgap is defined as the microscopic space that exists between the implant body and abutment. The main mechanism proposed for microgap-related crestal bone loss is the role of this space as a trap for bacteria and thus, as a putative etiological factor for inflammatory reaction in the peri-implant soft tissues. The aim of this paper was to evaluate, with X-ray 3D microtomography, the microscopic space that exists between the implant body and abutment with internal hexagon versus cone morse. Methods: A total of 20 implants were used in this in vitro study. Ten implants per group were used. Ten implants presented a screw retained internal hexagon abutment (Group I) and 10 had a Cone Morse taper internal connection (Group II). Results: In both types of Cone Morse internal connection implants there was no detectable separation at the implant/abutment in the area of the conical connection, and there was an absolute congruity without any microgaps between abutment and implant. No line was visible separating the implant and the abutment. On the contrary, in the internal hexagon screwed abutment numerous gaps and voids were present between the implant body and abutment. Conclusion: The results of the present study seem, then, to support the hypothesis that the length and the characteristics of the implantabutment joint could be a reason for the observed differences in mechanical stability.
KW - Bacterial leakage
KW - Crestal bone remodeling microgap
KW - Implant-abutment connections
KW - X-ray microtomography
UR - http://www.scopus.com/inward/record.url?scp=84964388576&partnerID=8YFLogxK
U2 - 10.1097/SCS.0000000000002563
DO - 10.1097/SCS.0000000000002563
M3 - Article
SN - 1049-2275
VL - 27
SP - 682
EP - 684
JO - Journal of Craniofacial Surgery
JF - Journal of Craniofacial Surgery
IS - 3
ER -