In vitro analysis of the influence of surface treatment of dental implants on primary stability


Autoria(s): Mazzo, Carla Rodrigues; Reis, Andrea Candido dos; Shimano, Antonio Carlos; Valente, Mariana Lima da Costa
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

14/10/2013

14/10/2013

01/07/2012

Resumo

Surface treatment interferes with the primary stability of dental implants because it promotes a chemical and micromorphological change on the surface and thus stimulates osseointegration. This study aimed to evaluate the effects of different surface treatments on primary stability by analyzing insertion torque (IT) and pullout force (PF). Eight samples of implants with different surface treatments (TS - external hexagon with acid surface treatment; and MS - external hexagon, machined surface), all 3.75 mm in diameter x 11.5 mm in length, were inserted into segments of artificial bones. The IT of each sample was measured by an electronic torquemeter, and then the pullout test was done with a universal testing machine. The results were subjected to ANOVA (p < 0.05), followed by Tukey's test (p < 0.05). The IT results showed no statistically significant difference, since the sizes of the implants used were very similar, and the bone used was not highly resistant. The PF values (N) were, respectively, TS = 403.75 +/- 189.80 and MS = 276.38 +/- 110.05. The implants were shown to be different in terms of the variables of maximum force (F = 4.401, p = 0.0120), elasticity in maximum flexion (F = 3.672, p = 0.024), and relative stiffness (F = 4.60, p = 0.01). In this study, external hexagonal implants with acid surface treatment showed the highest values of pullout strength and better stability, which provide greater indication for their use.

National Council for Scientific and Technological Development [149531/2010-9]

National Council for Scientific and Technological Development

Identificador

BRAZILIAN ORAL RESEARCH, SAO PAULO, v. 26, n. 4, pp. 313-317, JUL-AUG, 2012

1806-8324

http://www.producao.usp.br/handle/BDPI/34517

10.1590/S1806-83242012005000006

http://dx.doi.org/10.1590/S1806-83242012005000006

Idioma(s)

eng

Publicador

SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA

SAO PAULO

Relação

BRAZILIAN ORAL RESEARCH

Direitos

openAccess

Copyright SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA

Palavras-Chave #DENTAL IMPLANTATION #OSSEOINTEGRATION #TENSILE STRENGTH #TORQUE #RESONANCE FREQUENCY-ANALYSIS #INSERTION TORQUE #MECHANICAL VALIDATION #BIOMECHANICAL ASPECTS #TITANIUM #OSSEOINTEGRATION #MODELS #SCREWS #DENTISTRY, ORAL SURGERY & MEDICINE
Tipo

article

original article

publishedVersion