Microleakage at Different Implant-Abutment Connections Under Unloaded and Loaded Conditions.
Implant Dent
; 26(3): 388-392, 2017 Jun.
Article
em En
| MEDLINE
| ID: mdl-28248689
ABSTRACT
PURPOSE:
This study evaluated the microleakage at different implant-abutment (I-A) connections under unloaded and loaded conditions. MATERIALS ANDMETHODS:
Forty implants, specially designed with an opening at the apex, were grouped according to the I-A and screw device external hexagon implants with titanium (EH) or EH diamond-like carbon screws fixing the abutment; internal hexagon implants with titanium screws (IH); and Morse taper implants with solid (MT) or MT passing screws (MTps) abutments. The implants were fixed in a 2-compartment device, and toluidine blue solution (1.0 mg/mL) was placed at the I-A interface (upper compartment). The lower compartment was filled with purified water. Four implants of each group were loaded (50 N, 1.2 Hz) and after 50,000, 100,000, 200,000, and 300,000 cycles, aliquots were collected from the lower compartment for absorbance reading. Data were analyzed using analysis of variance for repeated measurements and Tukey (α = 0.05).RESULTS:
Although microleakage increased over time in most of the groups, MTps group showed lower values when loaded (P < 0.05). The DLC on the EH screw did not prevent microleakage (P < 0.05).CONCLUSION:
It can be concluded that MT connection is more effective to prevent microleakage.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infiltração Dentária
/
Projeto do Implante Dentário-Pivô
Idioma:
En
Revista:
Implant Dent
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article