الفهرس 
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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.