title: [Morphology and microleakage study of repairing subpulpal wall perforation with resinous inlay].
abstract: OBJECTIVE
  The purpose of this study is to study the sealing ability and the furcal appearance of repairing subpulpal wall perforation with resinous inlay.
  
  
  METHODS
  Fifty newly extracted human molars were randomly divided into three experiment groups (group A, group B, group C, 15 teeth each) and one control group (5 teeth). In experiment groups, perforations were made perpendicularly to the center of the pulp chamber floor. Perforations of group A and B were repaired with resinous inlay and sealed by AH Plus sealer and luting glass-ionomer, respectively. Perforations of group C were directly repaired using light-cure composite resin. Perforations were not made in five teeth of control group. The furcal appearances were evaluated under stereomicroscope after repairing. Microleakage was measured by glucose oxidase detection.
  
  
  RESULTS
  The fineness rate of furcal appearances with resinous inlay repairing were 83.3%, while the fineness rate of furcal appearances with light-cure composite resin directly repairing were 46.7%. There were statistics difference between resinous inlay repairing and light-cure composite resin directly repairing (P<0.05). There were statistics difference among the daily microleakage of three experiment groups, group A<group B<group C (P<0.05).
  
  
  CONCLUSIONS
  Using resinous inlay to repair the subpulpal wall perforation can improve the sealing effect and avoid material overextension. AH Plus can be used as perforation sealant because of its better sealing ability.
authors.affiliation: State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Xie
authors.forename: Shi-Hai
authors.initials: SH
authors.lastname: Yin
authors.forename: Li-Juan
authors.initials: LJ
authors.lastname: Xiao
authors.forename: Ling
authors.initials: L
authors.lastname: Zou
authors.forename: You-Qiong
authors.initials: YQ
authors.lastname: Jie
authors.forename: Su-Lan
authors.initials: SL
authors.lastname: Zhong
mesh_terms: D001641:Bicuspid; D003188:Composite Resins; D003763:Dental Leakage; D003786:Dental Pulp Cavity; D005899:Glass Ionomer Cements; D006801:Humans; D007284:Inlays; D008963:Molar
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements