RESUMO
OBJECTIVE: We examined if the association of ibuprofen with arginine has a better anti-inflammatory effect on pain, edema, and trismus after surgery of the impacted mandibular third molar than ibuprofen alone. MATERIALS AND METHODS: The study included 21 patients, 18 to 30 years of age, each with an impacted, and bilateral and symmetric third molar (total n = 21) that required transalveolar extraction. Patients were randomly assigned numbers from 1 to 21. Group A received ibuprofen-arginine as preoperative medication, while Group B received only ibuprofen. Both groups received the same postoperative medications: amoxicillin + acetaminophen. All patients were evaluated for pain at 6, 12, and 24 hours. They were evaluated for edema and trismus before surgery; immediately after surgery; and at 24, 48, and 72 hours postoperatively. Postoperative pain scores used the visual analog scale (BS-11). For facial edema and trismus, linear measurements used the method modified by Gabka and Matsumura. STATISTICAL ANALYSIS: For the evaluation of data between Group A and Group B, we used the statistical software SPSS version 22. The Shapiro-Wilk, analysis of variance, the Bonferroni comparisons, and the Wilcoxon test were used. All tests were based on a significance level of 0.05. RESULTS: The study results reveal that the facial edema scores of Group A and Group B presented statistically significant differences (p < 0.05), while for postoperative trismus, there was no statistically significant difference (p > 0.05) between the scores of Group A and Group B. CONCLUSION: As a conclusion, we can state that the use of ibuprofen-arginine allows for significantly better control of pain and edema, and shows a tendency toward better recovery from trismus, although without statistical significance. Based on this, we can assert that arginine improves the anti-inflammatory power of ibuprofen, thus generating better tissue healing after surgery of the impacted third molar.
RESUMO
The membranes are an important biomaterial that contribute to osteopromotion. This study aimed to evaluate the osteopromotive potential of collagen membranes associated with Hydroxyapatite (HA) in critical size calvaria rat's defects. Ninety-six Albinus Wistar rats were divided into four groups: (CG) negative control: clot only (CG); positive control: porcine collagen membrane (BG); fish collagen membrane associated with HA (CP); bovine collagen membrane associated with HA (CB), analyzed at 7, 15, 30, and 60 postoperative days. At 30 days, membrane integrity was observed in the CB and fragments in the CP and BG groups were dispersed in the center of the defect. At 60 days, BG demonstrated better results with no statistical difference for the CP group (p = 0.199) and a statistically significant difference for the CB group (p = 0.013). The inflammatory profiles of the BG and CP groups were similar. Immunohistochemistry demonstrated at 60 days moderate osteopontin staining for the BG and CP groups, light staining for the CB, and intense osteocalcin staining for the BG, while the CB and CP groups demonstrated moderate staining. Microtomography revealed the highest mean bone volume (14.247 mm3) in the BG, followed by the CB (11.850 mm3), and CP (9.560 mm3) group. The collagen membranes associated with HA demonstrated an osteopromotive potential.
RESUMO
O uso de membranas que auxiliem no processo de regeneração óssea guiada (ROG) é uma vertente dos estudos de biomateriais compatíveis que auxiliam no processo de reparo por meio da osteopromoção. O objetivo deste trabalho foi avaliar e comparar a regeneração óssea guiada utilizando membranas de colágeno de origens diferentes em defeitos críticos criados em calvária de ratos. Materiais e métodos: foram utilizados 72 ratos Albinus Wistar divididos em 3 grupos, sendo 6 animais para cada grupo: grupo controle somente com coágulo; grupo que recebeu a membrana de colágeno porcina (Bio-Gide®) e grupo de membrana de colágeno bovino associado à hidroxiapatita sintética (Col.HAP-91®). Foram estudados os períodos de 7, 15, 30 e 60 dias pós-operatórios através de lâminas submetidas as análises histomorfométricas e imunohistoquímicas. Os resultados histológicos demonstraram que o grupo controle positivo (BioGide®) apresentou neoformação óssea mais avançada aos 30 dias em comparação ao grupo coágulo e grupo experimental (Col.HAP-91®). Aos 60 dias observou-se similaridade quanto a neoformação óssea entre os grupos BioGide® e Col.HAP.91®. Esses resultados foram corroborados pelos resultados da imunoistoquímica. Diante dos resultados obtidos conclui-se que, todas as membranas estudadas nesta pesquisa promoveram a ROG(AU)
The use of membranes that aid in the guided bone regeneration (ROG) process is also a part of compatible biomaterial studies that aid in this repair process. Objective: To evaluate and compare guided bone regeneration using membranes from different origins in critical defects created in calvaria of rats. Materials and methods: We will use 72 Albinus Wistar rats divided into 3 groups, 6 of which were animals for each group: control group with clot only; group that received the porcine collagen membrane (BioGide®) and synthetic hydroxyapatite membrane group associated with collagen (Col.HAP-91®). The animals will be euthanized at 7, 15, 30 and 60 postoperative days. Laboratory procedures will be performed and histomorphometric and immunohistochemical analyzes will be performed. Histological results showed that the positive control group (BioGide®) presented more advanced bone formation at 30 days compared to the clot group and the experimental group (Col.HAP-91®). At 60 days, there was a similarity in bone neoformation between the BioGide® and Col.HAP.91® groups. These results were confirmed by iminohistochemistry. In view of the results obtained, it is concluded that all membranes studied in this research promoted guided bone regeneration(AU)