Abstract:
:Human Papilomaviruses (HPV) are a group of viruses associated with benign and malignant lesions of cutaneous and mucosal epithelia. Some "high risk" HPV types, especially HPV 16 and 18, are strongly correlated with cervical and anogenital cancers and are also related to the genesis of oral squamous cell carcinomas (OSCC). The aim of this work was to investigate the incidence of HPV infection in 40 paraffin-embedded or fresh specimens of OSCC, using PCR amplification of the viral DNA. Literature based primers (GP5+/GP6+) were used in order to amplify HPV DNA from the L1 gene, present in more than 22 types of HPV. A condyloma case with HPV 16 and 18 detected by in situ hybridization was used as a positive control. Amplification of HPV was observed only in the positive control. No squamous cell carcinoma cases showed DNA viral amplification. Absence of HPV DNA amplification by PCR in the analyzed specimens of OSCCs suggests that this virus not always plays a role in the carcinogenesis process. Discrepancy with some studies found in the literature may be related to methodology or population differences.
journal_name
Braz Oral Resjournal_title
Brazilian oral researchauthors
Rivero ER,Nunes FDdoi
10.1590/s1806-83242006000100005subject
Has Abstractpub_date
2006-01-01 00:00:00pages
21-4issue
1eissn
1806-8324issn
1807-3107pii
S1806-83242006000100005journal_volume
20pub_type
杂志文章abstract::The purpose of the present study was to evaluate the relationship between psychological variables and the clinical diagnosis of temporomandbular disorders (TMD) in 12-year-old adolescents. TMD pain was assessed by RDC/TMD examination (Research Diagnostic Criteria for Temporomandibular Disorders) (Axis I and II). Five-...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242009000200011
更新日期:2009-04-01 00:00:00
abstract::Widely used in dentistry, Ti-6Al-4V alloy is difficult to cast and solder, as it frequently exhibits pores inside the structure. This study was conducted to evaluate the effect of joint openings and diameters of laser-welded joints executed in Ti-6Al-4V structures on the presence of pores as checked by radiographic pr...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242011005000005
更新日期:2011-03-01 00:00:00
abstract::Over the last decade, there has been growing interest in diagnosing non-cavitated lesions in epidemiological studies involving large numbers of preschool children, schoolchildren and young adults. In this context, assessment of lesions characteristics indicating whether or not there is ongoing mineral loss is also con...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/S1806-83242013005000036
更新日期:2014-01-01 00:00:00
abstract::The aim of this study was to determine the cutting ability of chemical vapor deposition (CVD) diamond burs coupled to an ultrasonic dental unit handpiece for minimally invasive cavity preparation. One standard cavity was prepared on the mesial and distal surfaces of 40 extracted human third molars either with cylindri...
journal_title:Brazilian oral research
pub_type: 杂志文章,随机对照试验
doi:10.1590/s1806-83242006000200012
更新日期:2006-04-01 00:00:00
abstract::The purpose of this study was to test the hypothesis that both human and bovine sclerotic dentin have similar hardness properties, in addition to similar micromorphological characteristics. Sixteen teeth (8 human and 8 bovine) exhibiting exposed dentin in the incisal edge and showing characteristics typical of scleros...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242011000300014
更新日期:2011-05-01 00:00:00
abstract::There are many limitations to image acquisition, using conventional radiography, of the temporomandibular joint (TMJ) region. The Computed Tomography (CT) scan is a better option, due to its higher accuracy, for purposes of diagnosis, surgical planning and treatment of bone injuries. The aim of the present study was t...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242010000400016
更新日期:2010-10-01 00:00:00
abstract::Periodontal diseases are considered a worldwide public health problem, owing to their high prevalence in developed and developing countries. Periodontitis may lead to tooth loss, which can impact oral health-related quality of life. Gingivitis and periodontitis have been extensively studied regarding their etiopathoge...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2020.vol34.0027
更新日期:2020-04-09 00:00:00
abstract::The aim of this study was to evaluate surface free energy (SFE), surface roughness (SR) and surface hardness (SH) of two commercially available materials for fabricating dental implant abutments. In addition, the specimens were investigated by scanning electron microscopy (SEM) to determine the surface morphology. Twe...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242006000400005
更新日期:2006-10-01 00:00:00
abstract::The odontogenic keratocyst (OKC) is a recurrent cyst that has been recently reclassified from an odontogenic tumor to an odontogenic cyst. The aim of the present study was to investigate its treatment and address issues related to its association with nevoid basal cell carcinoma syndrome (NBCCS). Lesions from the coho...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2017.vol31.0098
更新日期:2017-12-18 00:00:00
abstract::The present study aimed to evaluate the microtensile bond strength (μTBS) of novel computer-aided design/computer-aided manufacturing (CAD/CAM) restorative materials to dentin using different adhesive strategies. Thirty-two crowns were milled using CAD/CAM materials (Vita Mark II as control, Vita Suprinity, Vita Enami...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2017.vol31.0109
更新日期:2017-12-18 00:00:00
abstract::The purpose of this study was to measure mass loss and surface roughness changes of different brands of flowable resin composites after a simulated toothbrushing test. The null hypotheses were that there would be no differences in mass loss and no significant changes in surface roughness after this test and that there...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242004000200012
更新日期:2004-04-01 00:00:00
abstract::The identification of the skeletal maturation stage of the cervical vertebrae has proven an important reference for orthodontic diagnosis. The aim of the present study was to determine the association between the skeletal maturation stage of the cervical vertebrae and types of malocclusion according to the age and gen...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242012005000003
更新日期:2012-03-01 00:00:00
abstract::The aim of this study was to evaluate the effects of different root canal filling techniques on the bond strength of epoxy resin-based sealers. Sixty single-rooted canines were prepared using ProTaper (F5) and divided into the following groups based on the root filling technique: Lateral Compaction (LC), Single Cone (...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2016.vol30.0024
更新日期:2016-01-01 00:00:00
abstract::The aim of this study was to evaluate changes in the superficial dentin pattern of primary teeth after applying different phosphoric acid concentrations and conditioning times. Twenty-four dentin surfaces were divided in 4 groups with 10 teeth each: GI -no treatment; GII to GIV -phosphoric acid at 37%, 32%, and 10% re...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242010000300011
更新日期:2010-07-01 00:00:00
abstract::This study evaluated the effect of implantoplasty on different bone insertion levels of exposed implants. A model of the Bone Level Tapered implant (Straumann Institute, Waldenburg, Switzerland) was created through the Rhinoceros software (version 5.0 SR8, McNeel North America, Seattle, WA, USA). The abutment was fixe...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2017.vol31.0096
更新日期:2017-12-07 00:00:00
abstract::Alcohol consumption is a risk indicator for periodontal disease. The purpose of this study was to morphometrically evaluate the influence of alcohol consumption on alveolar bone level associated with ligature-induced periodontitis in rats. Thirty-six female rats (Wistar, 120 days-old) were randomly divided into three ...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242009000300017
更新日期:2009-07-01 00:00:00
abstract::The aim of the present study was to evaluate the prevalence and impact of malocclusion on oral health-related quality of life (OHRQoL) among schoolchildren aged 8 to 10 years and their parents in Diamantina, a town in the southeast of Brazil. A cross-sectional study was conducted with a sample of 390 randomly selected...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2018.vol32.0095
更新日期:2018-01-01 00:00:00
abstract::Anti-dentin autoantibodies are associated with inflammatory root resorption in permanent teeth and are modulated by dental trauma and orthodontic force. However, it is not known whether deciduous tooth trauma can stimulate the development of a humoral immune response against dentin. The aim of this study was to evalua...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2015.vol29.0102
更新日期:2015-01-01 00:00:00
abstract::Evidence shows the polymicrobial etiology of endodontic infections, in which bacteria and their products are the main agents for the development, progression, and dissemination of apical periodontitis. Microbial factors in necrotic root canals (e.g., endotoxin) may spread into apical tissue, evoking and supporting a c...
journal_title:Brazilian oral research
pub_type: 杂志文章,评审
doi:10.1590/1807-3107bor-2018.vol32.0069
更新日期:2018-10-18 00:00:00
abstract::Halitosis or bad breath is an oral health condition characterized by unpleasant odors emanating consistently from the oral cavity. The origin of halitosis may be related both to systemic and oral conditions, but a large percentage of cases, about 85%, are generally related to an oral cause. Causes include certain food...
journal_title:Brazilian oral research
pub_type: 杂志文章,评审
doi:10.1590/s1806-83242008000500007
更新日期:2008-01-01 00:00:00
abstract::The aim of this study was to establish two new formulas for objectively evaluating skeletal maturation of cervical vertebrae in female and male Brazilian subjects using lateral cephalometric radiographs. The sample included 128 girls and 110 boys, aged 7.0 to 15.9 years, from the files of the Oral Radiology Clinic, Pi...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242007000400009
更新日期:2007-10-01 00:00:00
abstract::The objective of this study was to evaluate the effects of Cymbopogon citratus essential oil and its main compound (citral) against primary dental colonizers and caries-related species. Chemical characterization of the essential oil was performed by gas chromatography/mass spectroscopy (GC/MS), and the main compound w...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2017.vol31.0089
更新日期:2017-11-06 00:00:00
abstract::This randomized clinical trial aimed to assess the efficacy of sealing occlusal carious lesions in permanent teeth. The sample consisted of 54 occlusal carious lesions in permanent molars and premolars of 49 patients aged 8-43 years (median: 19 years). The inclusion criteria comprised the presence of a cavity with no ...
journal_title:Brazilian oral research
pub_type: 杂志文章,随机对照试验
doi:10.1590/1807-3107BOR-2017.vol31.0044
更新日期:2017-06-05 00:00:00
abstract::The objective of the present study was to assess the effectiveness of reciprocating instrumentation in disinfecting oval-shaped root canals infected with Enterococcus faecalis. Forty-five human lower premolars were infected with a culture of E. faecalis (ATCC 29212) for 28 days. Five other teeth that were neither cont...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2015.vol29.0027
更新日期:2015-01-01 00:00:00
abstract::The objective of this study was to assess the prevalence and the type of claim denials (administrative, clinical or both) made by a large dental insurance plan. This was a cross-sectional, observational study, which retrospectively collected data from the claims and denial reports of a dental insurance company. The sa...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107BOR-2015.vol29.0041
更新日期:2015-01-01 00:00:00
abstract::[This corrects the article doi: 10.1590/1807-3107BOR-2017.vol31.0105]. ...
journal_title:Brazilian oral research
pub_type: 杂志文章,已发布勘误
doi:10.1590/1807-3107BOR-2017.vol31.0105erratum
更新日期:2018-02-01 00:00:00
abstract::Human Papillomavirus (HPV) has considerable tropism for epithelial and mucosal tissues and can therefore be found in several anatomical sites, including the oral cavity. This study aimed to investigate the presence of HPV-DNA and the most frequent viral types in patients using full dentures, compare to patients not us...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2019.vol33.0091
更新日期:2019-11-25 00:00:00
abstract::Considering the absence of predictable and effective therapeutic interventions for the treatment of peri-implantitis, scientific evidence concerning the host response profile around dental implants could be important for providing in the future a wider preventive and/or therapeutic window for this peri-implant lesion,...
journal_title:Brazilian oral research
pub_type: 杂志文章,评审
doi:10.1590/1807-3107bor-2019.vol33.0066
更新日期:2019-09-30 00:00:00
abstract::The aim of this study was to analyze the efficiency of experimental light-curing resin cements (ERCs) with a ternary photo-initiator system containing diphenyliodonium hexafluorphosphate (DPI) and different amines on retention of glass-fiber posts to dentin (GFP). ERCs formulations: a 1:1 mass ratio of 2,2-bis[4-(2-hy...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/1807-3107bor-2018.vol32.0116
更新日期:2018-11-14 00:00:00
abstract::The effects of ethanol alone on the oral mucosa are still poorly understood, especially because there are few non-smoking chronic consumers of alcoholic beverages. The aim of this study was to evaluate the frequency of micronucleus, abnormal nucleus/cytoplasm ratio, pyknosis, karyorrhexis and karyolysis in exfoliated ...
journal_title:Brazilian oral research
pub_type: 杂志文章
doi:10.1590/s1806-83242006000200002
更新日期:2006-04-01 00:00:00