The aim of this study, is to evaluate the effectiveness of ultrasound guided injection of botulinum toxin A into the muscles of mastication; the masseter, temporalis and the lateral pterygoid, in a closed reduction approach of condylar and sub-condylar fractures, seeking to shed light on the efficacy and potential advantages of this innovative therapeutic avenue.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
16
The BTX vile is diluted with 2.0 cc saline or distilled water. It is 5 BU (Botox) per 0.1cc, so it is easy to measure (for 2.5 cc normal saline, you can calculate as 4 BU per 0.1 cc) therefore, the investigators can easily adjust the amount to be injected into the muscles of Mastication. Using a 5 cc syringe, draw more than 3 cc of air and inject into the botulinum toxin vial. Check whether the air is sucked into the vial. If air is not sucked into the vial, the vial is discarded as the vacuum is not present in the vial, thus it is faulty. To achieve a desirable concentration of dilution solution, an injection of 2.5 cc of normal saline into botulinum toxin and then it is gently mixed. Two to Three days prior to the surgical intervention, the BTX will be injected to the muscles of mastication; the lateral pterygoid, the masseter and temporal is of the fractured site. The, closed reduction and intermaxillary fixation will be performed for fracture management.
All patients will be treated using the closed reduction and intermaxillary fixation method. The patients will be treated under local or general anesthesia depending on the availability of other concomitant fractures and general status of the patient.
Faculty of Dentistry, Alexandria University, Egypt
Alexandria, Egypt
RECRUITINGPostoperative pain
Will be assessed through a 10-point Visual Analogue Scale (VAS). (0-1= None, 2-4= Mild, 5-7= Moderate, 8-10= Severe)
Time frame: up to 2 weeks
Occlusion Assessment
Assessment of the Occlusion will be performed and given a score: 1. Same to pre-traumatic 2. Minor difference 3. Functional malocclusion 4. Needs occlusal correction 5. Gross malocclusion.
Time frame: up to 3 months
Mouth opening
Inter-incisal distance will be measured in (cm) using a ruler, to assess the degree of mouth opening.
Time frame: up to 3 months
Mouth deviation assessment
The status of the deviation preoperatively, for the example the availability of cross bites or minor deviations, will be compared to the statues three months postoperatively. Photographs will be obtained for all patients to document occlusion and mouth opening.
Time frame: up to 3 months
Time frame needed until the intermaxillary fixation (IMF) is removed
The Intermaxillary fixation will be removed once satisfactory occlusion was achieved and time frame of the IMF will be recorded for each patient.
Time frame: through study completion, an average of 6 months
Bone density at the fracture line
An immediate postoperative CT will be obtained, followed by another one taken after 6 months postoperatively. The mean bone density at the fracture line in the 6 months CT-scan will be compared with the immediate postoperative and the preoperative scans and the mean difference between the scans will be calculated.
Time frame: 6 months
The angle between fracture and the longitudinal axis of the ramus
An immediate postoperative CT will be obtained, followed by another one taken after 6 months postoperatively. The angle between the condylar or subcondylar fracture, and the longitudinal axis of the ramus will be measured and compared pre-operatively and six months post operatively and the difference will be calculated.
Time frame: 6 months
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.