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Brazilian Oral Research

Cácia Signori, Andréia Drawanz Hartwig, Ivam Freire da Silva-Júnior, Marcos Britto Correa, Marina Sousa Azevedo, Maximiliano Sérgio Cenci
This study investigated the effect of human milk, alone and associated with sucrose, in the cariogenicity of biofilms in a microcosm biofilm model and compared with the cariogenicity of sucrose and bovine milk. Microcosm biofilms were grown in enamel discs in 24-well plates. Six growth conditions were studied: DMM (chemically defined artificial saliva - negative control), DMM with 1% of sucrose (DMM+s) (positive control), human milk with DMM, human milk with DMM+s, bovine milk with DMM, and bovine milk with DMM+s...
October 11, 2018: Brazilian Oral Research
Marcela Carvalho Espaladori, Kamilla Faria Maciel, Luciana Carla Neves de Brito, Toshihisa Kawai, Leda Quércia Vieira, Antônio Paulino Ribeiro Sobrinho
The aim of this study is to evaluate the expression of cytokines in response to mineral trioxide aggregate (MTA) plus selenium in germ-free mice with experimental furcal perforation. The first left maxillary molar was opened, and the furcal area was perforated and treated with post-MTA-Se (experimental group). The same surgical intervention was performed for the maxillary right first molar, which was treated with MTA (control group). Fifteen mice were sacrificed 7, 14, and 21 days after furcal perforation, and periapical tissue samples were collected...
October 11, 2018: Brazilian Oral Research
Mauricio Yugo de Souza, Rebeca DI Nicoló, Eduardo Bresciani
The aim of this study was to evaluate the effect of ethanol on the bond longevity of a universal adhesive system to bovine dentin, under different modes of adhesive application and artificial aging. Bovine dentin was exposed, and the smear layer was standardized by sandpaper polishing. Specimens were randomly divided into 2 groups: ethanol (E) and non-ethanol (N). Groups were subdivided according to adhesive mode of application into etch-and-rinse (Er) and self-etching (S). Resin blocks were built onto the treated surface, and the specimens were stored in deionized water at 37°C for 48 h...
October 11, 2018: Brazilian Oral Research
Manuelly Pereira de Morais Santos Campos, Paula Andréa de Melo Valença, Genivaldo Moura da Silva, Marília de Carvalho Lima, Silvia Regina Jamelli, Paulo Sávio Angeiras de Góes
The aim of this article was to evaluate the influence of biological and sociobehavioral factors on the development of malocclusions in children. This is a cross-sectional study nested in a cohort of 350 children who participated in a community intervention study. After six years, an active search identified 290 children with occlusal abnormalities. Socioeconomic status, linear growth, and nutritional status of the child at birth and at the time of measurement, as well as dietary and sucking habits, were investigated...
October 11, 2018: Brazilian Oral Research
Cristiano Miranda de Araujo, Adriana Cristina Rocha, Bianca Marques de Mattos de Araujo, Aline Cristina Batista Rodrigues Johann, Luiz Fernando Pereira, Orlando Motohiro Tanaka, Odilon Guariza Filho, Elisa Souza Camargo
The aim of this study was to evaluate the effect of acute administration of nicotine and ethanol on tooth movement in rats. Two hundred rats were divided into eight groups: S: saline; N: nicotine; E: ethanol; NE: nicotine and ethanol; SM: saline with tooth movement; NM: nicotine with tooth movement; EM: ethanol with tooth movement; and NEM: nicotine and ethanol with tooth movement. All the solutions were applied for 32, 44, or 58 days, according to the subgroup. Orthodontic movement (25 cN) was initiated 30 days after solution administration in the groups with tooth movement...
October 11, 2018: Brazilian Oral Research
Maria Cecília Caldas Giorgi, Amalie Perez Vogt, Carina de Jesus Corneta, Marilia Mattar de Amoêdo Campos Velo, Débora Alves Nunes Leite Lima, Giselle Maria Marchi Baron, Flávio Henrique Baggio Aguiar
This study evaluated the effect of adding the hydrophobic monomer 1,12 dodecanediol dimethacrylate (DDDMA) to experimental sealants with and without thermocycling on degree of conversion (DC), water sorption (WS), water solubility (WSB), color stability (ΔE), and micro-shear bond strength (μSBS). Five experimental and one commercially available sealant (Bisco - BIS) were tested. The experimental sealants were formulated by mixing different percentages of DDDMA monomers and urethane dimethacrylate (UDMA). The photoinitiator system was composed by camphorquinone (CQ) and tertiary amine 4-ethyl benzoate dimetilamiono (EDBA)...
October 11, 2018: Brazilian Oral Research
Girlene Maria do Rego Bezerra, Flávia Sirotheau Corrêa Pontes, Nicolau Conte Neto, Liliane Silva do Nascimento, Lucas Lacerda de Souza, Décio Dos Santos Pinto Junior, Hélder Antônio Rebelo Pontes
The aim of this study was to identify the immunoexpression of methallothionein in oral squamous cell carcinoma as well as to address the correlation with clinical features, histological grade and patient survival. Samples were collected from 93 patients with tongue squamous cell carcinoma who presented for follow-up. Immunohistochemical expression of methallothionein in all groups was performed. The scoring system has previously been published by Tsurutani in 2005, which is based on intensity and distribution of staining...
October 11, 2018: Brazilian Oral Research
Giana da Silveira Lima, Andressa Goicochea Moreira, Carine Tais Welter Meereis, Ginia Brito Lima, Fernanda Barbosa Leal, Rafael Ratto de Moraes, Fabrício A Ogliari, Cesar Liberato Petzhold, Evandro Piva
This study evaluated the three-year lifespan of the bond to dentin of experimental self-etch adhesives containing benzodioxole derivatives - 1,3-benzodioxole (BDO) and piperonyl alcohol (PA) - as co-initiator alternative to amines. Adhesive resins were formulated using Bis-GMA, TEGDMA, HEMA, camphorquinone and different co-initiators: BDO, PA or ethyl 4-dimethylamino benzoate (EDAB - amine). An experimental self-etch primer was used to complete the two-step, self-etch adhesive system. Clearfil SE Bond (CSE) was used as commercial reference...
October 11, 2018: Brazilian Oral Research
Catiara Terra da Costa, Ayah Qassem Shqair, Marina Sousa Azevedo, Marília Leão Goettems, Maria Laura Menezes Bonow, Ana Regina Romano
This study aimed to evaluate the influence of breastfeeding and pacifier use on the occlusal status of preschool children. A cross-sectional study was conducted with children (n = 489) aged 2-5 years in private and public schools in Pelotas, South Brazil. Mothers answered a questionnaire on demographic, socioeconomic and behavioral variables, including breastfeeding and non-nutritive sucking habits. Malocclusion was classified as normal/mild and moderate/severe, according to WHO criteria. The association between breastfeeding and pacifier use with malocclusion was tested using multivariate logistic regression...
October 11, 2018: Brazilian Oral Research
Izzet Acikan, Gul Mehmet, Gokhan Artas, Ferhan Yaman, Gulnihal Deniz, Ozgur Bulmus, Mustafa Kom, Mustafa Kirtay, Serkan Dundar
This study aimed to investigate the effects of different doses of systemic melatonin application on new bone formation during mandibular distraction osteogenesis (DO) in rats. Mandibular DO was performed on 30 adult female Sprague-Dawley rats, which were randomly divided into three groups: control group (CNT), melatonin dose 1 (MLT-D1), and melatonin dose 2 (MLT-D2). A five-day latent waiting period and a ten-day distraction phase followed the surgery. After the surgery, rats from the MLT-D1 and MLT-D2 groups received 25 and 50 mg/kg melatonin, respectively, at 7, 14, 21, 28, and 35 days...
September 21, 2018: Brazilian Oral Research
Edmilson Nobumito Kaneshima, Sandrine Bittencourt Berger, Thais Maria Freire Fernandes, Maria Fidela de Lima Navarro, Paula Vanessa Pedron Oltramari
The objective of this study was to assess the effect of a UV light-based auxiliary illumination on adhesive remnant (AR) removal after orthodontic debonding. Sixty human molars were divided according to the adhesive used for bonding: O-opaque; LF-low fluorescence; and HF-high fluorescence. After debonding, the teeth were subdivided according to the AR removal method: No UV light or With UV light. After AR removal, the teeth were polished. Direct visual analysis, scanning electron microscopy (SEM) and time quantification for AR removal analyses were performed (Fisher-Freeman-Halton, Fisher's exact, chi-square trend, ANOVA, and independent t-tests; α = 5%)...
September 21, 2018: Brazilian Oral Research
Sadi Memis, Celal Candirli, Gokcen Kerimoglu
The aim of this study was to evaluate the biostimulation (BS) effect of the gallium-aluminum-arsenide (GaAlAs) diode laser by histopathology with an experimental osteoarthritis (OA) model in the temporomandibular joints (TMJ) of rabbits, in the early period. GaAlAs diode laser is used for pain reduction in TMJ disorders. Twenty-four adult male New Zealand white rabbits were randomly divided into three equal groups: Control Group (CG), Study Group 1 (SG-1), and Study Group 2 (SG-2). Mono-iodoacetate (MIA) was administered to the right TMJs of all rabbits...
August 13, 2018: Brazilian Oral Research
Fernanda Bartolomeo Freire-Maia, Sheyla Márcia Auad, Mauro Henrique Nogueira Guimarães de Abreu, Fernanda Sardenberg, Milene Torres Martins, Saul Martins Paiva, Isabela Almeida Pordeus, Miriam Pimenta Vale
The aim of this study was to assess the prevalence and discriminate the associated factors between enamel fractures and other trauma/trauma sequelae in 8 to 10-year-old Brazilian schoolchildren. A representative sample of 1,201 children from public and private schools were enrolled in this cross-sectional study. Questionnaires about sociodemographic characteristics were answered by parents. The outcome variable (traumatic dental injury, TDI) was multi-categorized. Independent individual variables were sex, age, number of residents in household, parents/caregivers' level of education, family income, dental caries, and overjet...
August 13, 2018: Brazilian Oral Research
Melissa Esther Rivera-Peña, Marco Antônio Húngaro Duarte, Murilo Priori Alcalde, Flaviana Bombarda DE Andrade, Rodrigo Ricci Vivan
The aim of this study was to evaluate the influence of a novel ultrasonic tip as an auxiliary method for removing filling material from flattened/oval-shaped canals. The null hypothesis tested was that this method does not influence removing the filling material in flattened/oval-shaped canals. Forty-five mandibular incisors were selected and randomly divided into three experimental groups (n = 15) according to different protocols for removing root canal filling material. Group R: Reciproc R25/.08, Group RC: Reciproc R25/...
August 13, 2018: Brazilian Oral Research
Caroline Maria Igrejas Lopes, Marília Cabral Cavalcanti, Ana Cláudia Alves E Luna, Kátia Maria Gonçalves Marques, Maria José Rodrigues, Valdenice Aparecida DE Menezes
Sickle cell anemia, a genetic disease caused by a mutation in the beta-globin gene, can present oral manifestations such as delayed tooth eruption and hypomineralized enamel and dentin. The aim of the present study was to evaluate the prevalence and severity of developmental defects of enamel (DDE) and delayed tooth eruption in children with sickle cell anemia. The sample comprised 56 male and female children with sickle cell anemia aged 6 to 12 years and treated at the Hematology and Hemotherapy Center of Pernambuco, Brazil...
August 13, 2018: Brazilian Oral Research
Janaina Silva Martins Humberto, Jefferson Veronezi Pavanin, Maria José Alves da Rocha, Ana Carolina Fragoso Motta
The etiopathogenesis of oral lichen planus (OLP) is still not fully elucidated, and it is believed that its development could involve a neuro-immune-endocrine profile. This systematic review investigated the relationship between cytokines, cortisol, and nitric oxide (NO) in the saliva of OLP patients. An electronic search was conducted in Pubmed/Medline, Scopus, LIVIVO, and Web of Science databases with no restriction of language to identify studies published up to December 2017. Data extraction was performed using the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines...
August 13, 2018: Brazilian Oral Research
Mohammed Alasqah, Sameer Mokeem, Ali Alrahlah, Nawwaf Al-Hamoudi, Tariq Abduljabbar, Zohaib Akram, Fahim Vohra, Fawad Javed
The aim of the present study was to compare the clinical and radiographic periodontal parameters in prediabetes, type 2 diabetes mellitus (T2DM), and non-diabetic patients. Forty-one patients with prediabetes (Group 1), 43 patients with T2DM (Group 2), and 41 controls (Group 3) were included. Demographic data were recorded using a questionnaire. Full-mouth clinical (plaque index [PI], bleeding on probing [BOP], probing depth [PD], clinical attachment loss [CAL], missing teeth [MT]) and radiographic (marginal bone loss [MBL]) parameters were measured on digital radiographs...
August 6, 2018: Brazilian Oral Research
Bruna Marin Fronza, Patricia Makishi, Alireza Sadr, Yasushi Shimada, Yasunori Sumi, Junji Tagami, Marcelo Giannini
The objective of this study was to investigate microtensile bond strength (MTBS) and interfacial adaptation (IA) of bulk-fill restorative systems bonded to dentin in Class-I-preparations. Box-shaped preparations (4-mm-long, 3-mm-wide, 2-mm-high) made in extracted molars, and Teflon matrix with the same dimensions positioned over the occlusal surface were restored, providing a total of 4-mm composite depth using three bulk-fill restorative systems: Tetric EvoCeram Bulk Fill with Tetric N-Bond (TEC/TNB), SureFil SDR Flow with XP Bond (SDR/XPB) and Filtek Bulk Fill Flowable Restorative with Scotchbond Universal (FBF/SBU); or incrementally restored with a conventional restorative system: Herculite Classic with OptiBond FL (HER/OBF)...
August 6, 2018: Brazilian Oral Research
Morenike Oluwatoyin Folayan, Titus Ayodeji Oyedele, Elizabeth Oziegbe
This study assessed the difference in the number of visits made to a dental care clinic and the time spent providing specific dental treatment for children with and without molar incisor hypomineralization (MIH). Children aged 8 to 16 years who presented at the Pediatric Dental Unit of the Obafemi Awolowo University Teaching Hospital Complex, in Ile-Ife, Nigeria, were eligible for the study. A comprehensive medical and dental history was taken, and each child was clinically examined, diagnosed, and treated according to a drawn-up plan...
August 6, 2018: Brazilian Oral Research
Marília Cabral Cavalcanti, Thais Eiler Guirado, Vitor Marques Sapata, Claudio Costa, Cláudio Mendes Pannuti, Ronald Ernst Jung, João Batista César Neto
This is a cross-sectional study that aimed to estimate maxillary sinus floor (MSF) pneumatization in single missing tooth of posterior maxilla, by using cone-beam computed tomography (CBCT). CBCT images were analyzed bilaterally and divided into 2 groups: edentulous site (EdS) - edentulous single region of upper second premolar, first or second molars; Tooth site (TS) - contralateral region homologous to the EdS region, with tooth present. Variables evaluated were: sinus height (SH), estimated sinus pneumatization (eSP: ∆ EdS - TS), healed ridge height (HR) and presence of localized sinus pneumatization (LSP) in molars teeth at TS...
August 6, 2018: Brazilian Oral Research
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