Vol. 12 – Number 47 – 2021 IMPLANT DENTISTRY NOTEBOOK Original article Page 67-74 Influence of osseointegrated dental implant thread profile Carlos Nelson Elias¹ Francielly Moura Soares¹ Abstract In the manufacturing of osseointegrated dental implants there is no technical standard that defines the body shape and the threads fillets profiles (spirals). Dental implant manufacturers develop implant shapes to increase the implant-bone contact surface area, to improve primary stability, and to promote better distribution of oral forces to bone. The aim of this study was to characterize the dental implant of thread fillets profiles made in Brazil and to analyze the influence on primary stability and force distribution on the implant-bone interface. Seven groups of dental implants with cylindrical (Master Screw®), conical (Flash®, Master Grip®, and Conect Conic®), and hybrid (Easy Grip®, AR-Torq®, and AR Morse®) body shapes were inserted in polyethylene, polyurethane, and in swine bone. The results showed that tapered implants present greater primary stability, the threads profiles must be rounded, the square thread induces highest compressive stresses in the bone, and the microthreads in the cervical reduce the concentration of stresses. Descriptors: Dental implants, bite forces, mechanical stress, bone implant interface. ¹ Materials Science – Instituto Militar de Engenharia – Rio de Janeiro/RJ. DOI: 10.24077/2021;12476774
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