9/10/2023 0 Comments Dissected piezo injector![]() ![]() ![]() Impacted teeth can cause food impaction, cavities, pericoronitis, pain, and the development of bone lesions. Etiology may be multifactorial frequently due to adjacent teeth, thick covering bone or soft tissue, size of the maxilla or mandible with the subsequent deficiency of space in the mouth, the abnormal pathway of eruption, atypical locating of tooth bud, differential root evolution between the distal and mesial roots, or pathological lesions. It is a tooth that is partially or entirely unerupted. In early 1954, Mead defined an impacted tooth as a tooth that is disallowed from erupting into a normal position. Trial registration: NCT04889781 ( ), Date of Registration: (retrospectively registered), The association of Piezosurgery osteotomy and Dexamethasone intramuscular injection could be an effective combination to reduce postoperative pain and trismus after impacted third molar surgery. Comparison of the 1st and 3rd postoperative pain between groups revealed a lowest mean pain score in the Piezo-surgery with Dexamethasone group, followed by Conventional rotatory with Dexamethasone group and a highest mean score in the Conventional rotatory without Dexamethasone group ( p value < 0.0001). In the four groups, the mean pain score was highest on the 1st day and gradually decreased over the following days. The lowest reduction in mouth opening between baseline and 3rd-day post-op was found in the Piezo-surgery with Dexamethasone group (mean difference = 5.0, SD = 3.9, p value < 0.0001) followed by the Piezosurgery without Dexamethasone group (mean difference = 5.8, SD = 4.5, p value < 0.0001) and the highest average was reported by the Conventional rotatory without Dexamethasone (mean difference = 9.7, SD = 4.5, p value < 0.0001. The surgical working time was longer in piezo-surgery groups compared with the conventional rotatory instruments groups (15.82 ± 3.47 vs 23.33 ± 2.54 p value < 0.0001). ![]() The outcome variables were surgical working time calculated in minutes, maximal mouth opening measured in millimeters using Vernier Caliper at baseline and day 3 and postoperative pain assessed using a Visual Analog Scale (VAS) on days 1, 3, and 7. Participants were divided into four groups: Group 1 (Conventional rotatory), Group 2 (Conventional rotatory with 8 mg dose of dexamethasone 30 min before surgery), Group 3 (Piezo-surgery), and Group 4 (Piezo-surgery with 8 mg dose of dexamethasone 30 min before surgery). MethodsĪ randomized controlled clinical trial was conducted with a sample of 80 patients. The purpose of the study is to evaluate the effect of piezo-surgery and dexamethasone injection on postoperative sequelae after the surgical extraction of impacted mandibular third molars, and ultimately to compare their effect on reducing postoperative pain. In addition, Dexamethasone administration before the extraction of impacted third molars is an efficient way to reduce postoperative pain due to robust anti-inflammatory activity. Usually, rotatory instruments like burs have been used for osteotomy, while Piezosurgery is an innovative technique introduced to overcome the weaknesses related to the conventional technique. Surgical extraction of the impacted mandibular third molar is commonly associated with postoperative pain, swelling, and trismus. ![]()
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