Neurosensory disturbances following bone harvesting in the symphysis: a prospective clinical study |
| |
Authors: | von Arx Thomas Häfliger Jörg Chappuis Vivianne |
| |
Affiliation: | Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Berne, Berne, Switzerland. thomas.vonarx@zmk.unibe.ch |
| |
Abstract: | OBJECTIVE: To analyse the occurrence and resolution of neurosensory disturbances following bone harvesting from the symphysis. MATERIAL AND METHODS: In 30 patients, skin sensitivity of the chin/lower lip area and pulp sensitivity of all mandibular anterior teeth were assessed preoperatively, at the time of suture removal, at 6 and 12 months postoperatively. In addition, bone defect dimensions of the donor site were measured intraoperatively, and distances from defect margins to adjacent anatomical structures, such as root apices, mental foramen and inferior border of mandible, were assessed postoperatively on a panoramic radiograph. RESULTS: Pulp sensitivity changes were found in 18.6% of adjacent teeth at the time of suture removal. At the 6-month follow-up, 8.1% of teeth, and at the 12-month re-examination, 0.6% of teeth presented with altered sensitivity. This decrease over time of the number of affected teeth per patients with sensitivity changes was significant (P=2.35e-007). Lower lip hypaesthesia was only observed in one patient postoperatively, with complete resolution at the 6-month follow-up. Radiographic measurements of distances between donor defect and adjacent anatomical structures only reached significant difference for one parameter in patients with sensitivity changes compared with patients without sensitivity changes. CONCLUSIONS: Patients must be informed about possible transient and long-term sensitivity changes of adjacent teeth and soft tissues following bone harvesting from the chin. However, by correctly placing mucoperiosteal incisions and bone cuts, the risk of sensitivity changes can be minimized. |
| |
Keywords: | autogenous bone grafts bone harvesting donor site morbidity neurosensory disturbances pulp sensitivity symphysis |
本文献已被 PubMed 等数据库收录! |
|