ABSTRACT
Background: There are different surgical techniques to remove Oral mucoceles, including conventional surgery with scalpel, removal of the lesion with CO2 laser, and micro marsupialization. The present systematic review was conducted with the aim of comparing the recurrence rate of different surgical techniques for treatment of the oral mucoceles. Material and Methods: An electronic search for randomized controlled trials published in English until September 2022 related to different surgical methods for the treatment of oral mucocele was performed in Medline/PubMed, Web of Science, Scopus, Embase and Cochrane databases. A random-effects meta-analysis was conducted to compare the recurrence rate of different techniques. Results: Among 1204 papers initially identified, after the removal of duplicate articles and screening of the titles and abstracts, fourteen full-text articles were reviewed. Seven articles comparing the recurrence rate of oral mucocele in different surgical techniques were found. Seven studies were included in qualitative studies, and five articles were included in the meta-analysis. The risk of mucocele recurrence in the micro-marsupialization technique was 1.30 times that of the surgical excision with scalpel technique, which was not statistically significant. The risk of mucocele recurrence in the CO2 Laser Vaporization technique was 0.60 times that of the Surgical Excision with Scalpel technique, which was not statistically significant. Conclusions: The results of this systematic review showed that there is no significant difference between the recurrence rate of surgical excision, CO2 laser and marsupialization techniques for the treatment of oral mucoceles. Although more randomized clinical trials are needed for definitive results. (AU)
Subject(s)
Humans , Laser Therapy , Mouth Diseases/surgery , Mucocele/surgery , Neoplasm Recurrence, Local , Surgical InstrumentsABSTRACT
Statement of the Problem: The surgical repair of nasal septal perforation (NSP) has always been a challenging procedure and no consensus has been made about a definitive protocol. Purpose: In the current study, we investigated the use of cryopreserved amniotic membrane with mucosal rotational flap for the surgical repair of NSPs. Materials and Method: In this prospective clinical study, 12 patients with symptomatic NSP underwent primary surgical repair, between December 2018 and October 2019. The surgical procedure comprised of a rotational flap on one side of the defect and cryopreserved amniotic membrane as an interpositional graft in the mucoperichondrial pocket on the other side. The patency of defect was checked at a follow-up appointment at least 3 months after surgery. Results: Successful repair was perceived in 10 of 12 (83%) of patients. Reperforation occurred in two patients but the size of the defect was smaller than the original one. All of the patients reported elimination of all symptoms associated with NSP. Conclusion: The use of cryopreserved amniotic membrane as an interpositional graft accompanied by a mucosal rotational flap seems to be efficient in alleviating the symptoms of NSP and closure of the defect.
ABSTRACT
Background. The design of an orthodontic mini-implant is a significant factor in determining its primary stability and its clinical success. The aim of this study was to measure the relative effect of mini-implant design factors on primary stability of orthodontic mini-implants. Methods. Thirty-two 3-dimensional assemblies of mini-implant models with their surrounding bone were generated using finite element analysis software. The maximum displacement of each mini-implant model was measured as they were loaded with a 2-N horizontal force. Employing Taguchi's design of experiments as a statistical method, the contribution of each design factor to primary stability was calculated. As a result of the great effect of the upper diameter and length, to better detect the impact of the remaining design factors, another set of 25 models with a fixed amount of length and diameter was generated and evaluated. Results. The diameter and length showed a great impact on the primary stability in the first set of experiments (P<0.05). According to the second set of experiments, increased taper angle in the threaded and non-threaded area decreased the primary stability. There was also an optimum amount of 2.5 mm for threaded taper length beyond which the primary stability decreased. Conclusion. It is advisable to increase the diameter and length if primary stability is at risk. In the second place, a minimum amount of taper angle, both in the threaded and non-threaded area with an approximate proportion of 20% of threaded taper length to MI length, would be desirable for MIs with a moderate size.
