Risk assessment of inferior alveolar neurovascular bundle by multidetector computed tomography in extractions of third molars.
Surg Radiol Anat
; 34(7): 619-24, 2012 Sep.
Article
en En
| MEDLINE
| ID: mdl-22418617
PURPOSE: This study aimed to assess the reliability of multidetector computed tomography (MDCT) in determining the surgical risk of the inferior alveolar neurovascular bundle in extractions of third molars. METHODS: The sample comprised thirty-three individuals (63 third molars) who underwent preoperative evaluation by MDCT before extraction of impacted mandibular third molars. MDCT was used to determine the relationship between the roots of the third molars and the mandibular canal, and the course of the mandibular canal. Inferior alveolar nerve (IAN) exposure and the presence of hemorrhage were analyzed after removal of the teeth. IAN neurosensory deficit was recorded after 7 days. Clinical and MDCT findings were compared using Fisher's exact test (P < 0.05). RESULTS: There was a statistically significant association between IAN exposure and the tomographic relationship between the roots of third molars and the mandibular canal (P = 0.015). Conventionally, all cases of IAN neurosensory deficit and hemorrhage occurred when the roots of the third molar presented in an at-risk relationship with the mandibular canal, however, this association was not statistically significant (P > 0.05). A statistically significant association was found between the lingual course of the mandibular canal and IAN exposure (P = 0.03). CONCLUSIONS: MDCT is an effective tool for determination of the surgical risk to the inferior alveolar neurovascular bundle in extraction of mandibular third molars.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Diente Impactado
/
Tomografía Computarizada Espiral
/
Traumatismos del Nervio Trigémino
/
Nervio Mandibular
/
Tercer Molar
Tipo de estudio:
Etiology_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Surg Radiol Anat
Asunto de la revista:
ANATOMIA
/
RADIOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Alemania