الفهرس 
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Abstract
Dental caries is one of the most prevalent dental problems worldwide and has an impact on Oral health-related quality of life (OHRQoL). So, its management is considered as the main issue in oral healthcare especially in pediatric dentistry.
There are different methods of dental caries management, one of them is the conventional rotary method. It has many disadvantages like pain sensation, vibration and need of local anesthesia. During the last decades, the concept of minimally invasive dentistry (MID) had been introduced to overcome the disadvantages of the conventional drilling method.
CMCR is one of MID. It has several advantages as comfort, ease of use clinically and remove only the diseased tissue. Furthermore, it is painless, need minimal pressure for optimal usage without vibration during the treatment. CMCR is classified into sodium hypochlorite based (NaOCl) CMCR as Cariemove and enzyme based one as Papacarie.
Regarding to different studies, the different caries removal methods have an effect on dentine topography and the shear bond strength of resin modified glass ionomer adhesives (RMGI) as well.
Few studies evaluated the effect of CMCR method in comparison to conventional drilling method of caries removal concerning the changes in the dentin topography and the shear bond strength of adhesive restorative materials.
Aim of our study was to evaluate the dentin topography under scanning electron microscope (SEM) after removal of caries with two different caries removal methods (Cariemove CMCR and conventional drilling method) and examine the shear bond strength of resin modified glass ionomer adhesive (RMGI) to caries affected dentin following the two different methods of caries removal.
Fifty extracted carious primary molars were collected from the clinic of Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Ain Shams University.
The teeth were extracted due to shedding or orthodontic reasons. Then, they were divided into two groups according to the method of caries removal (Cariemove CMCR or drilling method), 25 teeth in each group. The group of CMCR, the teeth then were divided into 10 teeth for SEM and 15 teeth were restored with RMGI (Fuji II LC) and subjected to shear bond strength test by using LLOYD testing machine. Also, the group of conventional drilling method, the teeth were divided into 10 teeth for SEM and 15 teeth were restored with RMGI (Fuji II LC) and subjected to shear bond strength test.
The results of our study showed that the dentin topography after Cariemove CMCR was rough, almost free of smear layer, with opened dentinal tubules, intact peritubular and intertubuler dentin and bacteria free. However, the dentin after conventional rotary caries removal was smooth, was covered by thick smear layer with occluded dentinal tubules and multiples visible bacteria.
As for the results of the shear bond strength test, they were tabulated showing that the RMGI adhesives (Fuji II LC) were highly significant in Cariemove CMCR group than in conventional drilling group. That mean the Cariemove CMCR is considered as a successful alternative caries removal method in pediatric patients.