Objectives: This study was conducted to evaluate the effect of platelet rich fibrin (PRF) during revitalization of necrotic immature permanent anterior teeth after 6 months and 1 year follow up period. The following treatment protocols; Group A: revitalization using blood clot scaffold only, and Group B: revitalization using blood clot and PRF. Study design: twenty-two patients (7–12 years old) suffering from immature necrotic permanent maxillary central incisors were randomly selected and randomly allocated into 2 groups. Clinical examinations were performed to detect any pain or swelling during the follow up period. Standardized radiographs were digitally evaluated for changes in root length, periapical radiolucency size, presence of apical or cervical calcific bridges. Results: After a follow-up period of 12 months, most of the cases showed radiographic evidence of periapical healing and showed calcific bridges either cervical and/or apical. No significant differences were shown between both groups. Conclusions: The revitalization procedures succeeded to show continued development of roots in teeth with necrotic pulps. The use of PRF was not essential for repair but it helped during the procedures.

Aim:The study aimed to assess the oral condition in a group of Egyptian children with bronchial asthma in terms of salivary pH and dental caries pattern. And, assessment of the medications taken by those children (Aironyl and Apidone) in terms of pH and total sugar content. Subjects and methods:A sample of 60 children was divided into two groups (30 asthmatics ,30 asthmatic-free). A questionnaire was used to record history of asthma, snacking habits and frequency of tooth brushing. Dental caries surface index was measured using DMFs/defs index. The saliva samples were collected for measuring salivary pH. Anti-asthmatics (Aironyl and Apidone) were evaluated in terms of pH and total sugar content Results:The asthmatics had a significantly higher value regarding (defs) than the control (p<0.001). Concerning the pH value, the asthmatics had a significantly lower value than the control(p<0.001(.But there was no significant difference between both groups regarding DMFs (p=0.260). Both drugs (Apidone and Aironyl) are acidic where their pH values are 5.3 and 5.1 respectively. While, the total sugar content of Apidone is higher than Aironyl as the values are 17g% and 0.5g% respectively. Conclusions: Asthmatic children have more caries experience than healthy controls. Salivary pH value is less in asthmatics than controls.

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Aim:The aim is to assess the clinical and radiographic effect of partial pulpotomy versus complete pulpotomy using MTA in asymptomatic vital primary molars with deep caries. Methodology: A randomized controlled clinical split-mouth trial was designed, 50 mandibular molars in 25 children aged 4 to 6 years were assigned into two groups (n=25). Each patient had two deep carious non-symptomatic primary molars. Partial pulpotomy (group A) and complete pulpotomy (group B) were done for each child. After coronal pulp amputation and achieving hemostasis, MTA was placed over pulp stumps and teeth covered with stainless steel crown. All treated patients were followed-up at 1 week, and 3,6,9 months post-operatively. Results: The partial pulpotomy (group A) showed failure in two cases (8%). The first case reported clinical failure (pain and swelling) and radiographic failure (bone resorption and root resorption) at 6 months follow-up. Complete pulpotomy (group B) showed a success rate of 100% clinically and radiographically. Conclusions: The overall success rate of maintaining pulp vitality of 92.0% suggests that partial pulpotomy is a viable operative approach to treat primary teeth with deep carious lesions.