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FEM was technologically innovated which initially aimed at answering structural analysis difficulties involving Mechanics, Civil and Aeronautical Engineering. FEM basically stands for a numerical model of analyzing stresses as well as distortions in the form of any agreed geometry. There for the shape is discretized into the so-called ‘finite elements’ coupled through nodes. Accuracy of the results is determined by type, planning and total number of elements used for a particular study model. 3-D FE model was designed for in-depth qualitative examination of the relations amongst implant, tooth, periodontal ligament, and bone. Scholarly work equating work reliability, validated with a 3-D modeling suggested that meticulous data can be acquired with respect to stress distribution in bone. Comparative results from 3-D FEA studies showed that 3D FEA, when matched with in-vivo strain gauge measurements were corresponding with clinical outcomes. The aim of this review of literature is to provide an overview to show the application of FEM in (Short) implant dentistry.

Objective:Gingival recession (GR) is a common manifestation in most populations, and is considered as an early sign of periodontal disease. GR is an intriguing condition where various factors play an important role in its etiology. Only few studies have been undertaken to assess the prevalence and risk factors for GR in patients visiting dental hospitals. The aim of this study is not only to estimate prevalence, severity, and extent of GR in hospital population, of Vishnu Dental College, Bhimavaram, Andhra Pradesh, India, but also to assess the potential risk factors for the same.Materials and Methods:In this study, 2837 patients were examined of which 627 were included into the study. The age range was 16-80 years. Subjects were interviewed using a structural questionnaire, and full mouth clinical examination was done to assess recession.Results:Of all subjects examined 45.6%, 16.2% of individuals and 13%, 4.8% of teeth per individual showed GR >3 mm. Prevalence and severity of recession was correlated with age. Recession was present but recession threshold ≥3 and ≥5 mm affected only small percentage of teeth in subjects younger than 45 years. Mandibular incisors showed the highest prevalence of GR ≥1 mm with 61% of teeth being affected. Smoking and presence of supragingival calculus were most significantly associated localized and generalized recession.Conclusion:Prevalence of periodontal disease is high among this population based on the presence of gingival recession in most the individuals. High prevalence of GR is significantly associated with supragingival calculus and smoking habits. This suggests a need to improve their periodontal condition through education, motivation, and improving their periodontal health.

Aim: The aim of this review was to analyze the data in the available literature regarding aspects of periodontally accelerated orthodontic therapy such as reduction in treatment time, variation in surgical techniques, and patient satisfaction. Materials and Methods: An internet-based search was performed for the articles published between January 2008 and August 2018 using keywords periodontal accelerated orthodontic tooth movement, corticotomy, bone grafting, tooth movement, and treatment duration. A total of 84 articles were obtained from MEDLINE and Embase search engines, of which 31 articles were eligible to be included for the systematic review. Results: On analysis, it was observed that the earlier studies were predominantly pertaining to case reports. In the later part of the decade considered in this review, it was observed that the emphasis was given to clinical and animal studies. Conclusions: Most of the studies included in the review concluded that there was a significant reduction in orthodontic treatment duration using periodontal accelerated techniques compared to conventional orthodontic treatment.