Effect of Using Nano and Micro Airborne Abrasive Particles on Bond Strength of Implant Abutment to Prosthesis

\ amin davoudi; mansour rismanchian

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center	:	Isfahan University of Medical Science
Document Type	:	Latin Dissertation
Language of Document	:	English
Language of Original Work	:	English
Record Number	:	107677
Doc. No	:	T‭15954
Call number	:	WU640 D386e 1394
Main Entry	:	davoudi , amin Author
Title & Author	:	Effect of Using Nano and Micro Airborne Abrasive Particles on Bond Strength of Implant Abutment to Prosthesis\ amin davoudi
College	:	: dental faculty of isfahan
Date	:	, 1394
Degree	:	doctor of professional
field of study	:	dentistry
present date	:	2015
Page No	:	5p.:figure, table
Note	:	project ID 291297
Abstract	:	Connecting prostheses to the implant abutments has become a concern and achievinga satisfactory retention has been focused in cement-retention prostheses recently.Sandblasting is a method to make a roughened surface for providing more retention. Theaim of this study was to compare effects of nano and micro airborne abrasive particles(ABAP) in roughening surface of implant abutments and further retention of cementedcopings. Thirty Xive abutments and analogues (4.5 D GH1) were mounted vertically inself-cured acrylic blocks. Full metal Ni-Cr copings with a loop on the top were fabricatedwith appropriate marginal adaptation for each abutment. All samples were divided into3 groups: first group (MPS) was sandblasted with 50 μm Al2O3 micro ABAP, second group(NSP) was sandblasted with 80 nm Al2O3 nano ABAP, and the third group (C) was assumedas control. The samples were cemented with provisional cement (Temp Bond) and tensilebond strength of cemented copings was evaluated by a universal testing machine afterthermic cycling. The t test for independent samples was used for statistical analysis bySPSS software (version 15) at the significant level of 0.05. Final result showed significantdifference among all groups (p<0.001) and MPS manifested the highest mean retention(207.88±45.61 N) with significant difference among other groups (p<0.001). The controlgroup showed the lowest bond strength as predicted (48.95±10.44 N). Using nano ormicro ABAP is an efficient way for increasing bond strengths significantly, but it seemsthat micro ABAP was more effective.
Descriptor	:	implant abutments
	:	sandblasting
	:	surface treatment
	:	temporary cement
Added Entry	:	rismanchian mansour Thesis advisor
Added Entry	:	isfahan university of medical sciences