Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons
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J. Oral Maxillofac. Surg. · Mar 2006
The influence of computed tomography motion artifacts on computer-assisted surgery.
Motion artifacts can significantly deteriorate the precision of a computer-assisted surgical intervention because they destroy the isometric representation of tomographic pictures. In the context of a study, the influence of typical motion artifacts on the precision of markerless laser registration in image-guided oral and maxillofacial surgery was analyzed, and quality factors for evaluation of the isometry of a computed tomography (CT) dataset were determined. ⋯ The isometry of a CT dataset should always be checked before performance of a computer assisted surgical intervention because anisometric datasets result in inaccurate patient registration and navigation.
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J. Oral Maxillofac. Surg. · Feb 2006
Management of laryngo-tracheal injuries associated with craniomaxillofacial trauma.
Laryngeal fractures can occur in association with maxillofacial injuries and may lead to life-threatening airway obstruction. Because of a low incidence and a paucity of peer-reviewed information, there is no universally accepted treatment protocol and few clinicians have extensive experience with complex laryngo-tracheal trauma. The purpose of this retrospective analysis is to validate a treatment protocol for the management of laryngo-tracheal injuries occurring in severely injured patients by assessing the outcome of a consecutive series of patients who were treated by the same surgeons over a 12-year period. ⋯ Fractures of the larynx are uncommon injuries that are frequently associated with maxillofacial trauma and are potentially associated with significant morbidity. Management of laryngo-tracheal injuries using a protocol based on airway status as described in this report results in airway patency, functional vocal quality, and normal deglutition for almost all patients.
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J. Oral Maxillofac. Surg. · Feb 2006
Randomized Controlled Trial Comparative StudyComparison of remifentanil with fentanyl for deep sedation in oral surgery.
The aim of this study was to compare recovery for oral surgery patients given a deep sedation regimen of midazolam, propofol, and remifentanil with a standard control of fentanyl in place of remifentanil. ⋯ This study demonstrated that this remifentanil regimen provided significantly more rapid recovery and used significantly less propofol compared with the fentanyl regimen.
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J. Oral Maxillofac. Surg. · Feb 2006
Influence of estrogen on brain activation during stimulation with painful heat.
Several studies have shown that women express higher pain sensitivity during periods of low estrogen than during periods of high estrogen. The aim of this study was to show whether the difference in pain sensitivity could be visualized as a function of brain activity by means of functional magnetic resonance imaging (fMRI). ⋯ The results of this study suggest that the affective component of pain may be enhanced during the low-estrogen phase of the menstrual cycle in healthy women.