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Submucosal implantation of soft tissue expanders does not affect microcirculation
Author(s) -
Kaner Doğan,
Zhao Han,
Terheyden Hendrik,
Friedmann Anton
Publication year - 2014
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.12158
Subject(s) - microcirculation , tissue expander , medicine , soft tissue , affect (linguistics) , biomedical engineering , surgery , psychology , communication , mastectomy , cancer , breast cancer
Aim To investigate the effect of submucosal implantation of self‐filling osmotic tissue expanders on mucosal microcirculation. Material and methods In ten beagle dogs, all premolars were extracted on both sides of the mandible. Tooth‐supporting bone and excess soft tissue were removed to mimic a severely resorbed edentulous ridge. Six weeks later, tissue expanders with 0.7 ml final volume were implanted into a submucosal pouch at randomly selected test sites, while contralateral sites served as untreated controls. Microcirculation was assessed in perfusion units ( PU ) before surgery, after local anaesthesia, directly after surgery, and after 1 and 3 days, using Laser Doppler flowmetry. Results Local anaesthesia caused a significant decrease of blood flow from baseline (zero) to −6.4 PU (median; Q1 −10.5; Q3 −0.9; P = 0.006); however, no additional significant decrease was recorded after completion of surgery. Blood flow showed significant increases to −3.6 PU (median; Q1 −11.3, Q3 2.1; P = 0.02) and −4.0 PU (median; Q1 −9.2, Q3 1.1; P = 0.013) after 1 and 3 days, respectively, when compared to the measurements obtained after application of local anaesthesia and completion of surgery. Blood flow had returned to unimpaired baseline levels 1 day after surgery ( P > 0.05). Conclusions Submucosal implantation of self‐filling osmotic tissue expanders results in only momentary disturbance of microcirculation. The minor impairment of perfusion may explain the consistently good outcomes of submucosal implantation of these tissue expanders.