Fig. (1).

Surface implants of seven experimental groups. (A) Osseotite surface from BIOMET 3i osseotite surface implants. The surface treated with double acid-etching showing two-level topography with the presence of well-defined pores of different diameters. (B) Straumann SLA implant surface. Porous structures with smaller pores inside (fractal geometry) are observed. The smaller pores have the same structural shape as the larger pores. (C) Tree-Oss implant surface. Pores of various sizes presenting a uniform, rounded shape and great density per surface unit are observed. (D) B&W Implant surface. Irregular particles of various sizes adhered to the surface are visualized. Large splinter-like particles and small rounded particles are observed. Measurements were made in the gaps found between the particles. (E) Q-implant surface showing squamous surfaces with facets parallel to each other. The interstices between the scales or lamellae are considered pores. (F) ML implant surface with concavities and porous formations with well-defined borders. (G) Rosterdent implant surface with pores localized in different scale-like strata.