Implant design refers to the three-dimensional structure of the implant, with all the elements and characteristics that compose it. Dental implants are subjected to various force magnitudes and directions during function. Because implants function to transfer occlusal loads to the surrounding biologic tissues, functional design objectives should aim to manage biomechanical loads to optimize the implant-supported prosthesis function. Thus, the primary functional design objective is to manage biomechanical loads to optimize the implant-supported prosthesis function. An implant has a macroscopic body design and a microscopic component of implant design. The microscopic features are most important during initial implant healing and the initial loading period. The macroscopic implant body design is most important during early loading and mature loading periods. The product used by the implant team may increase or decrease the risk of screw loosening, crestal bone loss, implant body bone loss, peri-implantitis, esthetics of soft tissue drape, implant failure, and implant body fracture. This article shall help the learner in making a judicious informed decision regarding the different factors governing the reduction of overall stress in implant fixtures and, thus, providing a better treatment to their patients. Search strategy: A literature search was conducted using MEDLINE from 1975 to 2014 to identify studies, from simulated laboratory models, animal, to human, related to this topic using the keywords of implant biomechanics, implant macrodesign, thread pitch, thread geometry, thread depth, thread width, and implant crestal module.
With the advancement in the technology, this era of Internet has witnessed a bloom in the Social Networking sites popularity. Social Networking sites facilitate the users with features like sharing personal information, making friends, developing new relationships, giving rise to new privacy concerns, etc., allowing only reliable people in one's network. Here comes in the concept of 'Trust'. How can we assure that a person is trustworthy and what factors account to build the trust between two persons, known or unknown to each other? This requires an exploratory insight into users' intention to share information. This paper aims to understand the factors of trust, trust levels based on trust ratings from others and probability of accepting the other person in his/her network.
Gingival recession beyond grade III and grade IV level involving furcation defects can lead to tooth loss if not intervened at appropriate time. The treatment options include scaling and root planing, Furcation-plasty, Tunnel preparation, Root separation and resection. The chief complaint of the patient was pain in the upper left first molar because of grade III furcation involvement. Since it was a four rooted molar, the treatment of choice was hemisection of the tooth and extraction of the distal half following endodontic treatment. As the second molar was mesially tilted the prosthodontic rehabilitation was done with a hybrid prosthesis involving a full coverage conventional porcelain fused to metal retainer on the hemisected molar and a resin bonded partial coverage retainer on the tilted second molar. The resultant prosthesis is termed as "Hybrid prosthesis".
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