A research proposal is an essential scheme of any research. The contentment of any research is relying on the outstanding quality of research proposal. Both the social and health science research proposal writing depends on numerous factors which may be quality benchmarks, budget, time frame and many more. A research proposal should provide an outline of research which helps a reader to understand the scope and value of research work. So, the aim of this article is to provide a brief fundamental ideas and guild lines for a new researcher as well as students.

Progress has been made in understanding the nature of root canal infection and periapical disease. Sterilization of root canal system is one of the prominent problems. Evidences suggested that Enterococcus faecalis(E.faecalis) caused substantial root canal infections. So, elimination of such organismis important to achieve treatment success. Advance techniques and materials increase the success in Endodontics against Enterococcus faecalis. 3 mix antibiotic therapy a new biologic approach in the treatment of carious lesions.

Introduction: The aim of this study was to evaluate the postoperative results of mandibular parasymphysis fracture containing tooth in the fracture line. Materials and methods: The study was conducted at department of Oral & Maxillofacial Surgery, Dhaka Dental College and hospital. A total of 20 Patients included as study population, who were divided into two groups. Group I (retained group) consisted of 10 patients (50%) in which the teeth were retained in the fracture line. Group II (Extracted group) consisted of 10 patients (50%) in which teeth were extracted following specific criteria. All Patients were treated by open reduction and fixation with stainless steel miniplate and monocortical screw. Patients were followed up at 1st week, 8th week,12th week and 24th week of postoperative period and evaluated for healing related complications of fracture like infection, delayed union, malunion, and nonunion. Results: Out of 20 cases 3 patients (15%) had developed complications. In the retained group only one complication developed which was malunion. Where as in the extracted group two complications developed, one was delayed union and another one was infection. Postoperative complications rate in retained group was 10% and in extracted group it was 20%. In the early postoperative period the frequency of infection was more in both group and was decreased gradually with passage of time. In the 1st week of postoperative period the infection rate in extracted group was 20%. On the other hand in retained group it was 10%. No case of infection was found at following 8th and 12th week. After 24th week, 10% infection rate was found in extracted group and it was 0% in retained group. 10% delayed union was found in extracted group but absent in retained group. No case of malunion was found in extracted group but it was 10% in retained group. The complications rates were lesser in retained group than extracted group. Conclusion: Teeth associated with mandibular parasymphysis fracture should not be removed on a prophylactic basis to reduce the risk of complications of fractures site without an absolute indication for removal.

Deep neck infection is an infection in the potential spaces and fascial planes of either with abscess formation or cellulitis .However some of may still result in fatal complications. This paper described the etiology of deep neck infection, their predisposing factors and microbial pattern. More than 50% subject of this study were of younger age group ( below 40 years) with male predominance (65%). Regarding the neck space submandibular space was the most commonly involved(32%). Etiology of neck abscess showed that odontogenic cause was the most common (60%) among the respondent, then come infected cyst, tumour. Among the predisposing factors of deep neck infection, Anaemia comprises the highest percentage (45.2%). Then comes diabetes and Liver disease, Oral hygiene, index relates with the odontogenic cause. Among the odontogenic cause patient (71.8%) had poor oral hygiene index. Regarding microbial pattern streptococcus was the highest predominance followed by Staphylococcus and E coli. This results correlates with the common dental infective microorganism which also stands for odontogenic cause of deep neck abscess. This study concluded that maintenance of good oral hygiene can prevent deep neck abscess and their devastating effect of Bangladeshi people.

In appearance related society that we live in , the younger adolescent patient caneasily become self conscious if their teeth are different to others. A common from of microdontia which affect the maxillary lateral incisor is known as peg lateral. Treatment approach has to be case specific and depends on the condition of primary predecessor, number of missing teeth, status of occlusion and patient preference.This clinical report describes the treatment of both sided peg-shaped lateral incisors that were restored with resin composite laminate veneers. The aim of the treatment is to close the diastema and restore the contours of the tooth. These simple procedures may be a cost effective treatment alternative to restore the esthetics of these teeth and may prove particularly growing patients before more definitive restorations can be considered.

Adequate and safe blood supply has remained a challenge in developing countries like ours. There is a high dependency on family replacement and remunerated blood donors in our environment which carries an attendant increased risk of transfusion transmissible infection. This descriptive type of cross sectional study was conducted at transfusion medicine department of National Institute of Neurosciences & Hospital in Dhaka city during the period January to December 2015 with the aim to assess the awareness about blood donation among donors which includes knowledge and practice of blood donation. A total purposively selected 150 donors were interviewed by using a structured questionnaire which focused on knowledge and practice related variables. The statistical analysis was done by using the SPSS software (Version-21). The associations between the demographic factors were analyzed by using the Chi square test and Fishers Exact test. Among 150 donors, 124 (82.7%) were male and 26 (17.3%) were female donors, the mean age of the donors was 28.4 (± 7.2) years. 78 (52.0%) donors knew about the interval of blood donation and 84 (56.0%) knew about the age limit for the donation, but 86 (57.3%), 71 (47.3%) did not know the required Hb level to donate blood and volume of blood in each donation respectively. More than half (56.0%) had past history of blood donation and 103 (68.6%) of the donors showed positive effects like a feeling of satisfaction after blood donation. There were highly significant association found between blood donation and sex (p value.016). A majority (86.9%) of the donors were willing to be regular donors. The donors showed positive effects like a sense of satisfaction after the donation. Creating an opportunity for blood donation by conducting many blood donation camps may increase the voluntary blood donations.