Unit:
Κατεύθυνση Προσθετική (Κλινικές Ειδικεύσεις)Βιβλιοθήκη Οδοντιατρικής
Supervisors info:
Στέφανος Κούρτης, Αναπληρωτής Καθηγητής, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Νικήτας Συκαράς, Επίκουρος Καθηγητής, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Νικόλαος Πολυχρονάκης, Επίκουρος Καθηγητής, Τμήμα Οδοντιατρικής, Σχολή Επιστημών Υγείας, ΕΚΠΑ
Original Title:
Μελέτη της επίδρασης διαφορετικών πρωτοκόλλων λείανσης στην επιφανειακή τοπογραφία επιεμφυτευματικών διαβλεννογόνιων στηριγμάτων (abutments) από ζιρκονία.
Translated title:
In vitro investigation of the effect of different polishing protocols on the surface topography of zirconia implant abutments.
Summary:
Introduction: The success of an implant-supported restoration depends on the long-term stability of the soft tissue around it. Numerous factors can affect this stability, among which the surface topography of the implant abutment is of particular interest.
Aim: To evaluate and compare the surface topography of zirconia specimens following different polishing protocols.
Materials and Methods: 50 square zirconia specimens (Zirkonzahn GmbH) were fabricated and divided into 5 experimental groups. In the control group (ZP1) no further processing was performed. For the polishing of the remaining specimens two different polishing systems were used (“Polisher 1”: Meisinger GmbH, “Polisher 2”: Ivoclar Vivadent AG), as well as a polishing paste (OptraFine HP, Ivoclar Vivadent AG) in the following order: ZP2:Polisher1, ZP3: Polisher 1+Paste, ZP4: Polisher 2, ZP5: Polisher 2+Paste. Polishing was performed in a specially designed, experimental unit, under controlled pressure and for a specific time. Specimens were then studied under an optical profiler and for each specimen parameters Sa, Sz, Sdr, Sds, Sci, Std were recorded. No filters were used.
Results: The control group presented with the highest values for all recorded parameters. Groups ZP2 and ZP4 showed statistically significant differences from the control group for some of the recorded parameters (Sa, Sz, Sds). Groups ZP3 and ZP5 showed statistically significant differences compared to both the control group and groups ZP2 and ZP4 for the majority of the recorded parameters (Sa, Sz, Sdr, Sds).
Conclusions: No statistically significant difference was observed on the effect of the different polishers. The use of paste following the use of polishers affected significantly the zirconia surfaces, compared to the use of polishers only. The resulting surface consisted of prominent peaks, however it was more flat and homogenous. During the manufacturing process, a trace was left which none of the studied polishing protocols was able to eliminate.
Main subject category:
Health Sciences
Keywords:
Implants, Abutments, Surface topography, Profilometry
Number of references:
171
File:
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_Ποζίδη_MΔΕ_Πέργαμος.pdf
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