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   fracture strength of severely damaged primary anterior teeth after restoration with composite resin and resin-modified glass ionomer cement  
   
نویسنده paryab m. ,afshar h. ,seraj b. ,shakibapoor s. ,kharazifard mj.
منبع journal of islamic dental association of iran - 2016 - دوره : 28 - شماره : 2 - صفحه:57 -63
چکیده    background and aim: restoration of primary anterior teeth with severe caries extending to the gingival margin is challenging for many clinicians especially in uncooperative children. resin modified glass ionomer cements (rmgics) can be suitable for use in such cases since they require fewer application steps than composite resins. this study aimed to assess the fracture strength of severely damaged primary anterior teeth after their coronal build-up using rmgic and composite resin. materials and methods: this in vitro, experimental study was conducted on 40 primary teeth that met our inclusion criteria. after decoronization, they were cleaned and root ca-nals were filled. in the coronal cavity, one layer of base was applied and an undercut was created in the canal wall above the base. the teeth were divided into two groups of 20 for coronal restoration. in group 1, etching, bonding, intracanal post fabrication and res-toration with composite resin were carried out. in group 2, conditioning, intracanal post fabrication and restoration with fuji ii lc rmgic were performed. after thermal cy-cles, fracture strength of teeth was measured and compared in the two groups using t-test. results: fracture strength of teeth was not significantly different between two groups restored with composite resin (5.03±2.30 mpa) and rmgic (5.67±2.38 mpa) (p>0.05). conclusion: in the post and crown build up of severely damaged primary anterior teeth with severe caries extending to the gingival margin, fuji ii lc rmgic can be used as an alternative to composite resin especially in uncooperative children or treatment under general anesthesia.
کلیدواژه composite resins ,fuji ii lc cement ,glass ionomer cements ,tooth ,deciduous ,incisor ,post and core technique ,tooth fractures
آدرس tehran university of medical sciences, international campus, school of dentistry, department of pediatric dentistry, ایران, tehran university of medical sciences, school of dentistry, dentistry research institute, dental research center, department of pediatric dentistry, ایران, tehran university of medical sciences, school of dentistry, dentistry research institute, dental research center, department of pediatric dentistry, ایران, , ایران, tehran university of medical sciences, dentistry research institute, dental research center, ایران
 
 

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