Delayed Healing of Tooth Extraction Sockets After Vascular Endothelial Growth Factor Inhibition by Bevacizumab.

PURPOSE

This study aimed to explore the effect of the chemotherapeutic agent bevacizumab on the extraction socket healing process in New Zealand rabbits.

MATERIALS AND METHODS

The animals received intraperitoneal bevacizumab treatment for 6 consecutive weeks (3 mg/kg per week). The right mandibular first premolar was extracted in the second week of the experiment, and the jaw bone containing the socket tissues was harvested at the end of the treatment period. The healing of the removed socket was analyzed histologically and radiographically using a micro-computed tomography scan.

RESULTS

Quantitative morphometric and histologic assessments of the healing process of the extraction sockets in rabbits showed a marked (P ≤ .05) decrease in the bone volumetric mass after angiogenesis suppression by bevacizumab therapy (n = 5) compared with the control group (n = 5).

CONCLUSIONS

The results of this study indicate the physiological significance of angiogenesis in extraction socket healing. Moreover, this study highlights the risks and precautions that should be considered in clinical practice in patients undergoing targeted chemotherapy.