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Abstract introduction : Every dentist interest is to preserve a healthy set of natural teeth for each patient. The aim of any work in the health field is basically to preserve the body of human and its function(1). Dental caries is a serious public health problem that when not treated the disease can result in tooth loss, pain, infection and pulp death in severe cases. It can also lead to malocclusion, speech problems and lack of self-respect. Pediatricians and pediatric dentists alike are concerned about issue of dental caries in infants and young adults(2). Classical ways for preparation of cavity is based on a philosophy of extension for prevention. However, drilling frequently removes tooth parts that are healthy, along with the decayed DOI: 10.21608/dsu.2020.22350.1020 Manuscript ID: DSU-2001-1020 KEYWORDS Bulk fill composite, Caries removal, Chemo-mechanical, Papacarie. • E-mail address: hesham.mohammed86@yahoo.com 1. B.D.S Mansoura University (2010), General dental practitioner in the Ministry of Health 2. Professor and head of Pediatric and Preventive Dentistry and Dental Public Health, Faculty of Dentistry, Suez Canal University. 3. Assistant Prof. of Pediatric and Preventive Dentistry and Dental Public Health, Faculty of Dentistry, Zagazig University 4. Lecturer of Pediatric and Preventive Dentistry and Dental Public Health, Faculty of Dentistry, Suez Canal University EVALUATION OF MICROLEAKAGE AND MICROTENSILE BOND STRENGTH OF TWO BULK FILL COMPOSITES IN PRIMARY TEETH AFTER CARIES REMOVAL BY CHEMOMECHANICAL TECHNIQUE. Fatma Mohamed Mostafa Elsaied Elhendawi1 , Mohamed Sherif Mohamed Sallah Eldeen2 , Wael Mahmoud Abd Al Khalek Mohamed3 , Shereef Samy Abdellateef 4 142 Fatma Mohamed Mostafa Elsaied Elhendawi, et al. areas. This makes the tooth weak and less durable in the long run (3). The known barriers for the receptivity of dental treatment affecting oral health are anxiety and fear. The conventional drilling methods cause discomfort, particularly in children(4). Chemo-mechanical is a non-invasive method for removal of caries through removing infected dentin by a chemical agent. This mechanism eliminates infected tissues, and in addition preserves healthy dental structure (5). In Brazil, a study conducted in 2003 cause developing of a new formula to universalize utilizing of chemo-mechanical technique for removal of caries and encourage using it in public health. The new formula of papain based gel was commercially known as Papacarie(6). Restoration of cavities prepared by this method needs materials like glass ionomer or composite resins that attach to the dentin surface more than materials like amalgam that involve cutting a cavity designed to mechanically retain the restoration(5). Manufacturers of composite materials, aimed to simplify the technique to introduce the material into the cavity and its polymerization, now offer bulkfill type composite resins. Procedures simplification and lowering the time of embedding bulk-fill type restorations are because of probability of applying a single up to 4mm composite increment and this quick the work through lowering the clinical steps number. The innovative system of initiating polymerization determines lowering time of light and elevating the cure depth. Reduce these materials shrinkage and elevate filler content causes lowering to shrinkage stresses which permits for application of thicker layers. The color matching process time is decreased because of universal color of materials and shorter time of finishing and polishing of the restoration was remarked (7,8). There are two type. |