The bilateral sagittal split osteotomy (BSSO) of the mandible is one of the most used surgical techniques to achieve a harmonious jaw relation in the context of orthognathic surgery. Nevertheless, one of its main complications is neurosensory damage to the inferior alveolar nerve, which can cause severe impact in the quality of life on patients who suffer from it permanently. The purpose of this randomized clinical trial is to provide rigorous scientific evidence of the pharmacological effect of 1) Melatonin, 2) combination uridine triphosphate (UTP), cytidine monophosphate (CMP), and hydroxycobalamin (UTP/CMP/hydroxycobalamin) and 3) hydroxycobalamin regarding neurosensory disturbances incidence and persistence after BSSO.
The study will be done according to the international standards of the Helsinki convention for medical research and approved by the scientific ethics committee of Universidad de los Andes Clinic. All subjects will give their signed consent to participate of this clinical research. This clinical randomized trial will be double-blinded as both the patient and the surgeon will not know the treatment used until the experiment is over. The randomization will be done using "random.org" software to assign participants into 4 groups. Groups A, B and C will receive the medication, whereas the Group P will receive a placebo.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
220
Prognathism/Retrognathism correction through surgical procedures
Group B will receive the pharmacology treatment with 10 mg Melatonin. One capsule orally at night for 60 days.
Group C will receive the pharmacology treatment with 1 mg hydroxycobalamin (vitamin B12). One capsule daily for 60 days.
Groups A will receive the pharmacology treatment with 1.5 mg uridine triphosphate, 2.5 mg cytidine monophosphate and 1 mg hydroxycobalamin (Citoneuron). One capsule orally three times a day for 60 days as suggested by the manufacturer for patients with trauma - compressive peripheral neural disorders.
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: pre-operative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 1 day postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 3 day postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 2 weeks postoperative.
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 1 month postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 2 month postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 6 month postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 12 month postoperative
Neurosensory Activity
Presence or absense of symptoms and signs such as hypoesthesia, pain, anesthesia, numbness, among others
Time frame: 18 month postoperative
Subjective Test
Subjective testing using a questionnaire and visual analogue scale. 0 = normal sensation, 10= more severe sensory deficit.
Time frame: pre-operative, at day 1 and 3, at week 2, and at month 1, 2, 6, 12 and 18 after surgery.
Objetive Test
The Semmes-Weinstein (SW) test of sensitivity to touch/pressure will be used.
Time frame: pre-operative, at day 1 and 3, at week 2, and at month 1, 2, 6, 12 and 18 after surgery.
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