Prosthetic rehabilitation of the edentulous patients with complete dentures, along with the dietary counselling, improved the nutritional status of these patients.
A key factor for the success or failure of a dental implant is the manner in which stresses are transferred to the surrounding bone. This depends on the type of loading, bone-implant interface, the shape and characteristics of the implant surface and the quality and quantity of the surrounding bone. This study was done to evaluate the pattern of stress distribution with two different implant designs in four different densities of bone using 3D finite element analysis. Graphic pre-processing software Ansys version 10 was used for creating the geometric configuration of a section of the mandible with a missing first molar. Eight 3D models of this section restored with implant-supported all ceramic crowns were created. Four of these models were created to simulate a single threaded implant placed in four different densities of bone (D1, D2, D3 and D4). The other four models were created to simulate a single cylindrical implant placed in four different densities of bone (D1, D2, D3, and D4). The Poisson's ratio (μ) and Young's modulus (E) of elasticity of the material were incorporated into the model. An average vertical load of 400 N was applied on the occlusal surface of the first molar between the buccal cusp, central fossa and the marginal ridge. Maximum Von Mises stresses in all the eight models were observed at the crestal region or neck of the implant. The stresses observed were more for the threaded implants in all the four densities of bone when compared to that of the cylindrical implants. The study concluded that the cylindrical implant design was more favorable in softer bone than the threaded implant design.
Loss of the continuity of the mandible destroys the balance and the symmetry of mandibular function, leading to altered mandibular movements and deviation of the residual fragment towards the surgical side. To regain normal mandibular function for surgical resection of the ameloblastoma, initial rehabilitation was done using avascular fibular bone graft. Prosthetic rehabilitation was done by Placement of four implants in the anterior region followed by fabrication of suprastructure using UCLA abutments and ceramic crowns.
Microstomia is a condition with abnormally small oral aperture which is associated with compromised aesthetics and function of stomatognathic system. In young children, the leading cause of microstomia is oral electrical or chemical burns. Management of microstomia requires multidisciplinary approach including surgery, physiotherapy and appliance therapy. Appliance therapy in form of microstomia prevention appliance plays a pivotal role in prevention of contraction of tissue during healing. Numerous appliances have been described in literature to prevent microstomia. However, decision to use a particular appliance require meticulous planning considering the efficacy and effectiveness of the appliances and various patient factors like age, dentition status and compliance. This paper presents an unusual clinical condition where a unique customized microstomia prevention appliance therapy was instituted to prevent microstomia in 2 year old female patient following lip surgery. This appliance was constructed easily and inexpensively, could be adjusted so that it was almost painlessly inserted, and was progressively adapted. It was convenient for use in young child with minimal compliance offering improved mouth opening and consequently functional outcomes.
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