ABSTRACT
PURPOSE: The aim of the study was to present a methodology of development of a virtual 3-dimensional dental implant model for analyses via the finite element method. MATERIALS AND METHODS: A set, consisting of a dental implant and abutment, was embedded in acrylic resin for subsequent metallographic grinding and polishing. After the evidentiation of the internal geometry of the implant, the specimen was treated in a sputter for observation using scanning electron microscopy (SEM). The SEM image was transported to computer-aided design software by which all details of the implant were measured. With the measures obtained, the geometry was reproduced with 3-dimensional modeling software. Finally, the model was imported into finite element method analysis software with which it was discretized, generating a mesh. RESULTS: A model with the accurate geometry of the implant was developed. A mesh of 297,600 elements and 490,045 nodes was generated. An aleatory acceleration simulation was performed to test the mesh, and no errors were identified. CONCLUSION: The developed methodology generated a precise dental implant model, which can be applied in different finite element method simulations.
Subject(s)
Computer Simulation , Dental Implants , Finite Element Analysis , Imaging, Three-Dimensional , Models, Dental , Dental Prosthesis Design , Dental Stress Analysis/methods , Humans , Microscopy, Electron, Scanning , Reproducibility of Results , SoftwareABSTRACT
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Congenital granular cell tumor (CGCT), or congenital epulis, is an uncommon benign soft tissue lesion that usually arises from the alveolar mucosa of neonates and may cause respiratory and feeding problems. We report a case of a 3-day-old female newborn, who presented an intraoral tumor mass which was protruding from her mouth, compromising feeding. Under general anesthesia, the lesion was completely removed and the patient had an uneventful postoperative course. Clinical features and treatment approaches are presented and discussed, emphasizing the necessity of a multidisciplinaryapproach in such cases
