Biomedical Ti-Mo Alloys with Surface Machined and Modified by Laser Beam: Biomechanical, Histological, and Histometric Analysis in Rabbits

• Published in: Clinical implant dentistry and related research Vol. 15; no. 3; pp. 427 - 437
• Main Authors: Oliveira, Nilson T.C., Guastaldi, Fernando P.S., Perrotti, Vittoria, Hochuli-Vieira, Eduardo, Guastaldi, Antonio C., Piattelli, Adriano, Iezzi, Giovanna
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.06.2013
• Subjects: Alloys - chemistry; Alloys - radiation effects; Animals; Biocompatible Materials - chemistry; Biocompatible Materials - radiation effects; Biomechanical Phenomena; bone histomorphometry; Dental Alloys - chemistry; Dental Alloys - radiation effects; Dental Etching - methods; Dental Implants; Dental Prosthesis Design; Dental restorative materials; Dentistry; Electron Probe Microanalysis; Image Processing, Computer-Assisted - methods; laser beam surface modification; Lasers; Microscopy, Electron, Scanning; Osseointegration - physiology; Rabbits; removal torque; Spectrometry, X-Ray Emission; Surface Properties; Ti-Mo alloys; Tibia - anatomy & histology; Tibia - surgery; titanium alloys; Torque; Wettability
• ISSN: 1523-0899; 1708-8208
• DOI: 10.1111/j.1708-8208.2011.00354.x

ABSTRACT Purpose: In vivo bone response was assessed by removal torque, hystological and histometrical analysis on a recently developed biomedical Ti‐15Mo alloy, after surface modification by laser beam irradiation, installed in the tibia of rabbits. Materials and Methods: A total of 32 wide cylindrical Ti‐15Mo dental implants were obtained (10 mm × 3.75 mm). The implants were divided into two groups: 1) control samples (Machined surface – MS) and 2) implants with their surface modified by Laser beam‐irradiation (Test samples – LS). Six implants of each surface were used for removal torque test and 10 of each surface for histological and histometrical analysis. The implants were placed in the tibial metaphyses of rabbits. Results: Average removal torque was 51.5 Ncm to MS and >90 Ncm to LS. Bone‐to‐implant‐contact percentage was significantly higher for LS implants both in the cortical and marrow regions. Conclusions: The present study demonstrated that laser treated Ti‐15Mo alloys are promising materials for biomedical application.