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OBJECTIVE: Verify the effectiveness of surgical repositioning of the premaxilla and its stabilization methods in patients with bilateral cleft lip and palate during mixed dentition. DESIGN: Systematic review. MATERIAL AND METHODS: The search was conducted in 7 databases (eg, Medline via PubMed; Scopus; Central Cochrane; LILACS; Embase, Web of Science; and Sigle via OpenGrey until August 2021), using the descriptors "premaxilla", "cleft Palate", and "bone transplantation". INCLUSION CRITERIA: Clinical trials and observational studies that have patients with bilateral cleft who had a need for superior/posterior repositioning of the premaxilla on mixed dentition; Studies in any language was evaluted whitout time restriction of publication. RESULTS: From 5572 records, 6 studies were included in the review with a total sample of 212 patients. Regarding the type of stabilization used in the premaxilla, the hybrid method (rigid and complementary semi-rigid stabilization) predominated, being observed in 184 patients (86.8%). A total of 17 failures were identified related to the surgical repositioning of the premaxilla, corresponding to 8% of the total number of surgeries. A meta-analysis of prevalence was performed, only with the retrospective studies. It was observed that the effectiveness rate of premaxilla repositioning was 92%, with a CI between 0.04 and 0.13, with all included studies showing a similar failure rate (0.08-0.09). The included studies also showed great homogeneity in this analysis (I2 = 0%; P = .75). CONCLUSION: Although there are several alternatives and techniques for repositioning and stabilizing the premaxilla, the statistical result did not differ between the different techniques.

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Objetivo: A proposição do presente trabalho foi analisar a frequência relativa dos vários tipos histológicos de cistos e tumores odontogênicos benignos. Metodologia: por meio do estudo retrospectivo de prontuários dos pacientes submetidos a tratamento no Hospital Santo Antônio - obras Sociais Irmã Dulce, Salvador-BA, Brasil, sob anestesia geral, durante o período de 2004-2010. Foram avaliados: idade, gênero, tipo histológico, sítio anatômico, tratamento realizado e recorrência. Resultados: observaram-se 34 pacientes do gênero feminino e 24 do gênero masculino. o ameloblastoma (43%) foi o tipo histológico mais frequente, seguido do tumor odontogênico ceratocístico (26%), mixoma odontogênico (10%) e odontoma (9%). entre os cistos, o maior percentual foi de cisto paradentário (60%). A média de idade foi de 28,1 anos. A principal localização anatômica foi a mandíbula em região posterior.

Purpose: The purpose of this study was to analyze the relative frequency of the various histologic types of odontogenic cysts and tumors. Methodology: A retrospective study was conducted based on the medical records of patients undergoing treatment at Hospital Santo Antônio - obras Sociais Irmã Dulce, Salvador-BA, Brazil, under general anesthesia during the period 2004-2010. Age, gender, histological type, anatomic site, treatment performed and recurrence were evaluated. Results: The study comprised 58 patients (34 females and 24 males). Ameloblastoma (43%) was the most common histological type, followed by the keratocystic odontogenic tumor (26%), odontogenic myxoma (10%) and odontoma (9%). Among the cysts, the paradental cyst showed the highest percentage (60%). The mean age was 28.1 years. The main anatomical location was the posterior region of the mandible.