Mechanical and microstructural properties of fixation systems used in oral and maxillofacial surgery

Mendes, Marcelo Breno Meneses; Medeiros, Raquel Correia de; Lauria, Andrezza; Marchiori, Érica Cristina; Sawazaki, Renato; Lopes, Éder Sócrates Najar; Moreira, Roger William Fernandes

doi:10.1007/s10006-015-0532-3

Cited by 1 publication

(3 citation statements)

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“…IV. DISCUSSION Information on the surface characteristics and chemical composition of surgical materials represents a predictive factor for understanding their physical-chemical and biological properties 12,13,17 .Knowing the morphology of the external surface and the chemical composition of plates and screws used in the internal fixation of facial fractures will help in the selection of the best material to be used 18 . Quality control of the materials used to treat facial fractures is essential 19 .The absence of surface defects is expected when acquiring and using these materials since it is impossible to detect them macroscopically.…”

Section: Screwsmentioning

confidence: 99%

“…Plates and screws used for internal fixation are manufactured from different titanium (Ti) alloys 13 . The use of this metal has enabled the development of materials with excellent physical and mechanical properties 5 , in addition to adequate biocompatibility 14,15 .…”

Section: Introductionmentioning

confidence: 99%

“…The chemical composition of the material used in the internal fixation, as distributed at the level of its surface structure, can characterize different properties since this surface allows interaction between the material and the tissues with it has contact 7 .Biocompatibility can be directly affected by the chemical composition of the material, since the presence of compounds that irritate the tissues reduces the tissue tolerance tothe material 7 .In this way, knowledge of the chemical composition of the internal fixation materials can favor understanding of their biological and physical-chemical properties 13 .A limited amount of information is available about the chemical constitution and the characteristics of the external surfaces of plates and screws before their surgical use. Thus, the present study aimed to evaluate the morphology of the external surface and the chemical constitution of plates and screws used to fix facial fractures.…”

Section: Introductionmentioning

confidence: 99%

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Chemical and Structural Evaluation of Internal Fixation Materials for Facial Fractures

Tomáz¹,

Oliveira²,

Aranha³

et al. 2020

IJAERS

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Oral and maxillofacial injuries often result in fractures tofacial bones. The treatment of facial fractures involves the use of plates and screws for internal fixation. This study was aimedatanalyzing the surface morphology and chemical constitution of internal fixation materials used to treatfacial fractures through scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis. Twenty-seven plates and 21 screws were distributed in six experimental groups: Group 1-Toride ® ; Group 2-Engimplan ® ; Group 3-MDT ® ; Group 4-Promm ® ; Group 5-Osteomed ® andGroup 6-Stryker ® . The samples underwent SEM, andthe external surface morphology was analyzed qualitatively in images obtained with a magnification of 30-1000X. The surface was described according to its regularity (regular or irregular) and concerning the presence of defects (scratches, corrosion, metal fragments, metal deformation or protuberance [burrs]). Constitutive analysis was made through EDX. The chemical elements were quantified and presented asatomic weight percentages (%p). All the plates presented external surfaces with irregular aspects. Defects were not observed only in Osteomed ® and Stryker ® plates. The main components found in the plates were titanium (Ti), silicon (Si) and aluminum (Al). The element phosphorous (P) was found only in Stryker ® plates. The screws presented regular surfaces and defects onthe head and threads. Most of the screws presented Ti and Al peaks. Traces of vanadium (V) were identified in the Stryker ® and Toride ® screws. The Promm ® screws were made of Ti. The analyzed plates and screws presented surfaces with different aspects and defects. Some of the chemical elements found in the plates and screws were not described by their manufactures.

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