title: Comparison of the proliferative activity in gingival epithelium after surgical treatments of intrabony defects with bioactive glass and bioabsorbable membrane.
abstract: Guided tissue regeneration is based on preventing the more rapidly proliferating epithelium from growing into the periodontal defect after surgical procedures incorporating barrier membranes. The aim of this study was to compare the proliferative activity of gingival epithelium using proliferating cell nuclear antigen (PCNA) as a marker of cell proliferation after surgical treatments with bioactive glass graft material and bioabsorbable membrane. Using split mouth design, 20 intrabony defects were randomly assigned treatments with bioactive glass (BG group) or bioabsorbable membrane (BM group). Gingival biopsies were taken at preoperative and postoperative 12 weeks. After histological processing, the number of the inflammatory cells was measured in hematoxylin and eosin-stained sections; PCNA expression was determined in immunohistochemically-stained sections. At postoperative 12 weeks, the number of the inflammatory cells was significantly decreased (p < 0.01), PCNA expression was significantly increased (p < 0.001) in both treatment groups compared to baseline data. There was no significant difference in PCNA expression between baseline values of two groups (p > 0.05), while at postoperative 12 weeks, increase in BG group was significantly greater than that in BM group (p < 0.001). These results suggest that epithelial cell proliferation is more prominent after treatment of intrabony defects with bioactive glass compared to the treatment with bioabsorbable membrane.
authors.affiliation: Faculty of Dentistry, Department of Periodontology, Ondokuz Mayis University, 55139, Samsun, Turkey. dtcetinkaya@yahoo.com
authors.forename: Burcu Ozkan
authors.initials: BO
authors.lastname: Cetinkaya
authors.forename: Gonca Cayir
authors.initials: GC
authors.lastname: Keles
authors.forename: Bulent
authors.initials: B
authors.lastname: Ayas
authors.forename: Oguz
authors.initials: O
authors.lastname: Aydin
authors.forename: Tugrul
authors.initials: T
authors.lastname: Kirtiloglu
authors.forename: Gokhan
authors.initials: G
authors.lastname: Acikgoz
mesh_terms: D020341:Absorbable Implants; D000328:Adult; D016301:Alveolar Bone Loss / Q000601:surgery*; D018786:Bone Substitutes; D002516:Ceramics; D004847:Epithelial Cells / Q000502:physiology; D005260:Female; D005881:Gingiva / Q000502:physiology; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods*; D006801:Humans; D007124:Immunoenzyme Techniques; D019344:Lactic Acid; D008297:Male; D008567:Membranes, Artificial; D011091:Polyesters; D011108:Polymers; D018809:Proliferating Cell Nuclear Antigen / Q000096:biosynthesis; D012038:Regeneration; D018709:Statistics, Nonparametric; D016896:Treatment Outcome
chemical_list: C022107:Bioglass; D018786:Bone Substitutes; D008567:Membranes, Artificial; D011091:Polyesters; D011108:Polymers; D018809:Proliferating Cell Nuclear Antigen; D019344:Lactic Acid; C033616:poly(lactide)