Influence of direct laser fabrication implant topography on type IV bone: A histomorphometric study in humans

Abstract

The aim of this histologic study was to evaluate the influence of the direct laser fabrication (DFL) surface topography on bone-to-implant contact (BIC%), on bone density in the threaded area (BA%) as well as bone density outside the threaded area (BD%) in type IV bone after 8 weeks of unloaded healing. Thirty patients (mean age 51.34 +/- 3.06 years) received 1 micro-implant (2.5-mm diameter and 6-mm length) each during conventional implant surgery in the posterior maxilla. Thirty micro-implants with three topographies were evaluated: 10 machined (cpTi); 10 sandblasted and acid etched surface (SAE) and 10 DFL micro-implants. After 8 weeks, the micro-implants and the surrounding tissue were removed and prepared for histomorphometric analysis. Four micro-implants (2 cpTi, 1 SAE and 1DLF) showed no osseointegration after the healing period. Histometric evaluation indicated that the mean BIC% was higher for the DFL and SAE surfaces (p = 0.0002). The BA% was higher for the DFL surface, although there was no difference with the SAE surface. The BD% was similar for all topographies (p > 0.05). Data suggest that the DFL and SAE surfaces presented a higher bone-to-implant contact rate compared with cpTi surfaces under unloaded conditions, after a healing period of 8 weeks.

Porous Titanium for Dental Implant Applications

“…The result indicated that after eight weeks of implant insertion, the bone-implant contact produced by the direct laser and the sandblasted acid-etched processes was not significantly different but was higher than that of machined implant, and there were no significant differences between them. The authors attributed their finding to the surface roughness that was produced by the laser and sandblasting techniques, which enhanced the osseointegration process [91]. Another study using male Sprague-Dawley rats indicated that the biological fixation was influenced by the percentage of porosity in titanium implants (25%, 11%, 3%).…”

Functional Biomimetic Dental Restoration

“…Their results revealed that eight weeks post implant insertion, the bone-implant contact produced by the direct laser and sandblasted acid-etched processes was not significantly different but was higher than that of the machined implant, and there were no significant differences between the three types. These findings are explained and attributed to the surface roughness that was produced in both laser and sandblasting techniques, which improved the osseointegration process [66]. Another study using male Sprague-Dawley rats indicated that the biological fixation was affected by the percentage of titanium implants porosity (25, 11, 3%).…”

Ki̇şi̇ye Özgü Dental İmplantlar: Derleme

“…Üretim tekniklerindeki limitasyonlar nedeniyle açık poröz yapıların oluĢmasını engellenmesine rağ-men, 35,36 porözitenin, por geniĢlikleri ile dağılımlarının ve mekanik özelliklerin kontrol edilebildiği poröz yapıya sahip implantların üretilmesi için talep vardır. [37][38][39][40] Katmanlı üretim (additive manufacturing) metotları bu durumun üstesinden gelebilmek için önerilmiĢtir. [37][38][39][40][41] Katı serbest Ģekilli fabrikasyonu (solid freeform fabrication), tabakalı üretim (layered manufacturing) veya doğrudan dijital üretim (direct digital manufacturing) olarak da bilinen katmanlı üretim (additive manufacturing), üç boyutlu sanal model verileri doğrultusunda yapısı ve Ģeklinin tanımlanması ile direkt olarak fiziksel objeleri oluĢturmak için kullanılan bir stratejidir.…”

“…[37][38][39][40] Katmanlı üretim (additive manufacturing) metotları bu durumun üstesinden gelebilmek için önerilmiĢtir. [37][38][39][40][41] Katı serbest Ģekilli fabrikasyonu (solid freeform fabrication), tabakalı üretim (layered manufacturing) veya doğrudan dijital üretim (direct digital manufacturing) olarak da bilinen katmanlı üretim (additive manufacturing), üç boyutlu sanal model verileri doğrultusunda yapısı ve Ģeklinin tanımlanması ile direkt olarak fiziksel objeleri oluĢturmak için kullanılan bir stratejidir. [39][40][41] Özellikle katmanlı üretim, bilgisayar destekli tasarım (CAD) verilerinden veya bilgisayar destekli tıbbi görüntüleme teknolojilerinden sağlanan katmankatman Ģeklindeki verilerden, direkt olarak fiziksel modeli oluĢturabilen teknikleri içerir.…”