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Effect of Le Fort I osteotomy on maxillary tooth-type-related pulpal blood-flow characteristics
R Emshoff1, R Kranewitter, B Norer
1Department of Oral and Maxillofacial Surgery, University of Innsbruck, Austria. Maxillofaziale-Chirurgie@uibk.ac.at
Objective:
Laser Doppler flowmetry is a noninvasive method of assessing pulpal blood-flow (PBF) to document pulpal vitality. Maxillary osteotomies have been associated with segment-related decreases in local PBF. The aim of this study was to assess the effect of a Le Fort I osteotomy on tooth-type-related PBF values.
Patients And Methods:
Maxillary incisors, canines, and premolars were investigated bilaterally by laser Doppler flowmetry in 14 volunteers to assess local PBF values before and after surgery. Perfusion units were taken in 3 sessions: on the day before surgery (time since osteotomy ¿TSO 0) and at 4 days (TSO I) and 56 days (TSO II) after osteotomy.
Results:
Analysis of TSO-related PBF measurements revealed a significant difference between TSO 0 and TSO II for the first premolar and between TSO 0 and TSO I and II for the overall tooth-type-related values.
Conclusions:
The main findings of this study indicated Le Fort I osteotomy to be associated with a short-term and long-term decrease in maxillary PBF values.