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Histopathological comparative analysis of periimplant bone inflammatory response after dental implant insertion using flap and flapless surgical technique. An experimental study in pigs
Author(s) -
Vlahović Zoran,
Marković Aleksa,
Lazić Zoran,
Šćepanović Miodrag,
Đinić Ana,
Kalanović Milena
Publication year - 2017
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12919
Subject(s) - medicine , implant , dentistry , dental implant , mandible (arthropod mouthpart) , buccal administration , reduction (mathematics) , surgery , botany , geometry , mathematics , biology , genus
Aim To evaluate by histopathological analysis the peri‐implant bone inflammation degree, in certain time intervals (7, 14, 21 and 28 days), following mini‐incision flapless and flap implant placement. Material and methods The experiment was conducted on four domestic pigs. Nine weeks prior to implant insertion, second and third mandibular premolars were extracted. Each animal received six implants in lower jaw. On one randomly chosen side of jaw flapless technique using mini‐incision was performed, while on the other side implants were inserted after flap raising. After 7, 14, 21, and 28 days, the experimental animals were sacrificed. Following mandibular resection and decalcification, the samples for histopathological analysis of the peri‐implant bone were obtained in the empty implant bed area, from the buccal side of the mandible, adjacent to implant neck region and parallel to crestal edge of implant bed. The degree of inflammatory response of the peri‐implant bone was estimated through ordinal scores from 0 to 2. Results Seven days after the surgery all samples in the flap group had score 2 indicating high inflammation degree, in contrast to lower inflammatory reaction in flapless group. On the 14th and 21st postoperative day decreasing of inflammation degree was noted in all samples of the flapless group (score 1), while in flap group samples presented scores 1 and 2. Twenty‐eight days after the implant placement, further reduction of inflammation in the flapless group (33% of samples had score 0) was observed. Conclusion Flapless technique in comparison to conventional flap procedure minimizes postoperative bone inflammatory reactions.