title: Microleakage Evaluation of Composite Restorations Following Papain-Based Chemo-Mechanical Caries Removal in Primary Teeth.
abstract: OBJECTIVE
  To evaluate the microleakage of composite restorations following Papain-based chemo-mechanical caries removal compared to the conventional drilling method. The characteristic of the hybrid layer was also studied using scanning electron microscopy.
  
  
  METHODS
  The sample included thirty freshly extracted and exfoliated primary molars with open proximal carious dentin lesions. Teeth were divided into two equal groups, according to method of caries removal. Following caries removal, cavity preparations were restored with composite resin. After thermocycling, teeth were sealed apically and coated with nail polish except the surface of restorations and the surrounding 1mm. Teeth were immersed in basic fuschin dye solution, then they were sectioned mesiodistally. The extent of dye penetration was detected using a light stereomicroscope. After microleakage test, the resin/dentin interface was examined using scanning electron microscopy.
  
  
  RESULTS
  There was no significant difference in the degree of leakage between both groups. In the Papacarie group, longer and numerous resin tags were observed with statistically significant thicker hybrid layer than those following the drilling method. However, there was no significant difference between the diameters of resin tags of both groups.
  
  
  CONCLUSIONS
  Papacarie does not adversely affect the microleakage of composite restorations and provides a suitable surface for bonding.
authors.forename: Marwa Abdel
authors.initials: MA
authors.lastname: Hafez
authors.forename: Mona
authors.initials: M
authors.lastname: Elkateb
authors.forename: Sonia
authors.initials: S
authors.lastname: El Shabrawy
authors.forename: Amel
authors.initials: A
authors.lastname: Mahmoud
authors.forename: Omar
authors.initials: O
authors.lastname: El Meligy
mesh_terms: D003188:Composite Resins; D003731:Dental Caries / Q000628:therapy; D003737:Dental Cavity Preparation / Q000379:methods*; D003763:Dental Leakage; D003804:Dentin / Q000648:ultrastructure*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D010206:Papain / Q000627:therapeutic use*; D014094:Tooth, Deciduous / Q000648:ultrastructure*
chemical_list: D003188:Composite Resins; C509557:Papacarie; D010206:Papain
keywords: Chemo-mechanical Caries Removal; Papain gel; Primary Teeth