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DE LIMA FILHO OA 《Revista paulista de medicina》1954,45(1):136-152
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Marcos Heidy GUSKUMA Eduardo HOCHULI-VIEIRA Flávia Priscila PEREIRA Idelmo RANGEL-GARCIA JUNIOR Roberta OKAMOTO Tetuo OKAMOTO Osvaldo MAGRO FILHO 《Journal of applied oral science : revista FOB》2010,18(4):346-353
Although the search for the ideal bone substitute has been the focus of a large
number of studies, autogenous bone is still the gold standard for the filling of
defects caused by pathologies and traumas, and mainly, for alveolar ridge
reconstruction, allowing the titanium implants installation.
Objectives
The aim of this study was to evaluate the dynamics of autogenous bone graft incorporation process to surgically created defects in rat calvaria, using epifluorescence microscopy.Material and methods
Five adult male rats weighing 200-300 g were used. The animals received two 5-mm-diameter bone defects bilaterally in each parietal bone with a trephine bur under general anesthesia. Two groups of defects were formed: a control group (n=5), in which the defects were filled with blood clot, and a graft group (n=5), in which the defects were filled with autogenous bone block, removed from the contralateral defect. The fluorochromes calcein and alizarin were applied at the 7th and 30th postoperative days, respectively. The animals were killed at 35 days.Results
The mineralization process was more intense in the graft group (32.09%) and occurred mainly between 7 and 30 days, the period labeled by calcein (24.66%).Conclusions
The fluorochromes showed to be appropriate to label mineralization areas. The interfacial areas between fluorochrome labels are important sources of information about the bone regeneration dynamics. 相似文献78.
Bernardo Born PASSONI Haline Renata DALAGO Guenther SCHULDT FILHO Jo?o Gustavo OLIVEIRA DE SOUZA César Augusto Magalh?es BENFATTI Ricardo de Souza MAGINI Marco Aurélio BIANCHINI 《Journal of applied oral science : revista FOB》2014,22(5):403-408
Objective
The aim of this study was to evaluate the relationship between the number of pillar implants of implant-supported fixed prostheses and the prevalence of periimplant disease.Material and Methods
Clinical and radiographic data were obtained for the evaluation. The sample consisted of 32 patients with implant-supported fixed prostheses in function for at least one year. A total of 161 implants were evaluated. Two groups were formed according to the number of implants: G1) ≤5 implants and G2) >5 implants. Data collection included modified plaque index (MPi), bleeding on probing (BOP), probing depth (PD), width of keratinized mucosa (KM) and radiographic bone loss (BL). Clinical and radiographic data were grouped for each implant in order to conduct the diagnosis of mucositis or peri-implantitis.Results
Clinical parameters were compared between groups using Student''s t test for numeric variables (KM, PD and BL) and Mann-Whitney test for categorical variables (MPi and BOP). KM and BL showed statistically significant differences between both groups (p<0.001). Implants from G1 – 19 (20.43%) – compared with G2 – 26 (38.24%) – showed statistically significant differences regarding the prevalence of peri-implantitis (p=0.0210).Conclusion
It seems that more than 5 implants in total fixed rehabilitations increase bone loss and consequently the prevalence of implants with periimplantitis. Notwithstanding, the number of implants does not have any influence on the prevalence of mucositis. 相似文献79.
Jorge César Borges LE?O FILHO Daphine Beatriz GALLO Regis Meller SANTANA Odilon GUARIZA-FILHO Elisa Souza CAMARGO Orlando Motohiro TANAKA 《Journal of applied oral science : revista FOB》2013,21(2):145-149
Objective:
The aim of this study was to evaluate in vitro the effects of frequently ingested beverages on force degradation of intermaxillary elastics.Material and Methods:
One hundred and eighty 1/4-inch intermaxillary elastics (TP Orthodontics) were immersed into six different beverages: (1) Coca-Cola®; (2) Beer; (3) Orange juice; (4) Red wine; (5) Coffee and (6) artificial saliva (control). The period of immersion was 15 min for the first and second cycles and 30 min for the third to fifth cycles. Tensile forces were read in a tensile testing machine before and after the five immersion cycles. One-way repeated measures ANOVA was used to identify significant differences.Results:
Force degradation was seen in all evaluated groups and at all observation periods (p<0.05). A greater degree of degradation was present at the initial periods, decreasing gradually over time. However, no statistically significant differences were seen among groups at the same periods, showing that different groups behaved similarly.Conclusion:
The chemical nature of the evaluated beverages was not able to influence the degree of force degradation at all observation periods. 相似文献80.
Josiane Costa Rodrigues de Sá Elen de Souza TOLENTINO Luciana Reis AZEVEDO-ALANIS Liogi IWAKI FILHO Vanessa Soares LARA José Humberto DAMANTE 《Journal of applied oral science : revista FOB》2013,21(6):540-546
Asymptomatic mouth floor enlargements may be observed in edentulous patients. These
masses, which protrude from the mouth floor, may complicate the fitting of dentures
and require surgery. Whether this "entity" may be considered an anatomical variation
of the mouth floor or represent specific alterations in the sublingual gland is not
known.