A PROSPECTIVE-STUDY ON CHANGES IN THE SENSIBILITY OF THE ORAL-MUCOSA AND THE MUCOSA OF THE UPPER LIP AFTER LE-FORT-I OSTEOTOMY

Citation
A. Rosenberg et Hf. Sailer, A PROSPECTIVE-STUDY ON CHANGES IN THE SENSIBILITY OF THE ORAL-MUCOSA AND THE MUCOSA OF THE UPPER LIP AFTER LE-FORT-I OSTEOTOMY, Journal of cranio-maxillo-facial surgery, 22(5), 1994, pp. 286-293
Citations number
48
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Dentistry,Oral Surgery & Medicine",Surgery
ISSN journal
1010-5182
Volume
22
Issue
5
Year of publication
1994
Pages
286 - 293
Database
ISI
SICI code
1010-5182(1994)22:5<286:APOCIT>2.0.ZU;2-A
Abstract
A prospective study on 21 patients was performed in order to investiga te the changes in the sensibility of the oral mucosa and the mucosa of the upper lip after a Le Fort I osteotomy. Patients were followed-up 1 month, 3 months and 6 months postoperatively. The sensibility of the mucosa was tested using electrical sensimetry (Laitinen, 1987). The t eeth were tested with carbon dioxide snow (Obwegeser and Steinhauser, 1963). A picture of the marked hypoaesthetic area was performed and ma gnified 1:1 if a hypoaesthesia of the cutaneous distribution of the in fraorbital nerve was found. The area was measured using a Macintosh II CX computer. It was demonstrated, that after 3 months the infraorbita l nerve regained its function completely. The greater palatine nerve a nd the posterior superior alveolar nerve demonstrated an incomplete re covery of sensory function after 6 months. After 6 months 92.8% of the teeth reacted to carbon dioxide snow. Within the first 6 months posto peratively, no pulpe necrosis was observed. No correlation could be fo und between the amount of anterior maxillary movement and the degree o f hypoaesthesia of the infraorbital nerve. Dentate Le Fort I osteotomi es showed a better sensory regeneration of the greater palatine nerve than edentulous Le Fort I osteotomies. After Le Fort I osteotomies in 2 parts, more hypoaesthesia of the greater palatine nerve was observed than after Le Fort I osteotomies in 1 part. After miniplate osteosynt hesis, more hypoaesthesia of the posterior superior alveolar nerve was observed than after wire osteosynthesis. The results are discussed an d compared with the results found in the literature. Suggestions to de crease the postoperative hypoaesthesia of the nerves supplying the muc osa have been made.