Background: The aim of this study was to evaluate if tilting of the distal implant at different angulations (30°and 40°) with different cantilever lengths (4 mm and 12 mm) affects the stress and strain distribution in an 'all-on-four' situation. Methods: A completely edentulous mandible was modelled with four tapered implants placed within the interforaminal region to receive an all acrylic fixed prosthesis. The two posterior implants were tilted at an angle of 30°and 40°. The prosthesis cantilever was given two different variables of 4 mm and 12 mm. For all models, the equivalent von Mises stress and strain was analysed using three-dimensional finite element analysis. Results: Statistical significance (p < 0.05) was seen when a comparison was made for the stress developed on the implant and cortical bone between the 30°and 40°distally tilted posterior implants in both situations. No significance was seen in the trabecular bone and on the strain developed in these situations. Conclusions: The study shows that increasing the tilt of the distal implants does not increase the stress significantly. It also shows that the architecture of the mandible plays a major role during treatment planning of a completely edentulous patient.

Aims and Objectives:To determine the occurrence of various missing teeth pattern among the partial edentulous patients residing in Chennai who are undergoing treatment for the replacement of missing teeth in the Department of Prosthodontics, Sri Ramachandra University Chennai, India.Settings and Design:Study was undertaken from January 2014 to October 2014, and the design was a descriptive cross-sectional study.Materials and Methods:Five hundred and sixty-one persons aged between 13 and 87 years (267 males and 294 females) were selected, intraoral examination was done visually and results were recorded on specially designed clinical examination forms.Statistical Analysis:Data were analyzed using statistics SPSS 19.0 version (IBM India Private Limited Bangalore) to investigate the relationship between quantitative variables.Results:The results showed the patients with Kennedy's Class III were found to be the most prevalent among all the groups (55%). The most common modification in all the groups was Class III modification I (26%). It was also found that Kennedy's Class III was founded more in the age group of 31–40 with 54.4% in the maxillary arch and 47.2% in the mandibular arch.Conclusion:The findings of this study show that the Kennedy's Class III was the most commonly occurring and were found to be more predominant in the younger group of population.

Purpose Different socio-demographic variables, such as age, gender, and systemic disease, may affect satisfaction with complete dentures. Several studies have failed to show strong correlations either between patient satisfaction with their dentures and their quality or between denture satisfaction and the quality of the denture-supporting tissues. Hence, this study utilized a standardized questionnaire that included questions from domains such as mastication, appearance, speech, comfort, health, denture care, and social status. These questionnaires were used to determine the level of complete denture satisfaction along with socio-demographic variables such as age, gender, and systemic condition. Materials and method A total number of 128 completely edentulous patients aged between 40 and 50 years were selected. A standardized questionnaire, with 19 questions based on denture satisfaction level and masticatory capacity in the domains of functional limitation (FL), psychological discomfort (D1), psychological disability (D2), and social disability (D3), was administered. All the questions were recorded on a scale of 2, 1, 0 based on satisfied, moderately satisfied, and not satisfied, whereas hardly ever, occasionally, and very often were used for masticatory capacity. Questions on denture satisfaction were asked based on the post-treatment satisfaction with the new maxillary/mandibular complete dentures of the patients. Results Based on gender, the distribution of samples was 46.09% for male patients and 53.91% for female patients among the 128 patients selected. Similarly, based on systemic diseases, 66.41% had the presence of systemic disease while 28.13% did not have any systemic disease. Around 5.47% of the sample did not have any medical records. The predominance of psychological satisfaction was more for female patients. Based on systemic disease, it was observed that patients with the presence of systemic disease (Pn) were more psychologically comfortable than those who did not have systemic disease. The predominance of functional satisfaction was not marked in both genders. Based on systemic disease, it was observed that patients with the presence of systemic disease (Pn) had less functional comfort on mastication than those who did not have a systemic disease. Conclusion The acceptance of and satisfaction with complete denture treatment were comparatively higher in patients who had a systemic disease than in those with a non-systemic disease in terms of psychological and social comfort, whereas, in functionality, patients with a non-systemic disease had a higher satisfaction level.