Publications by authors named "Maria Antonia Zancanaro de Figueiredo"

Introduction: Oral cytopathology is able to detect incipient cellular alterations, but it is not routinely applied to this purpose. We aimed to establish a model to screen individuals with no oral lesion exposed to smoking/alcohol, by means of the nuclear area, cell proliferation rate, and analysis of genetic damage.

Methods: In this cross-sectional pilot study, 90 patients were allocated into 3 groups: oral cancer group (patients with oral squamous cell carcinoma), tobacco/alcohol group (patients without oral lesions and exposed to these risk factors), and control group (individuals with no lesion and not exposed to tobacco and alcohol).

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  • - The study investigated the perceptions of 192 dentists in Rio Grande do Sul about their training and practices related to diagnosing and preventing oral cancer, including their attitudes towards performing biopsies.
  • - Results showed that while nearly all dentists perform thorough mouth exams and provide tobacco cessation counseling, only a small fraction regularly perform biopsies, mostly due to a lack of experience.
  • - Many dentists felt that their clinical and theoretical training in oral medicine was inadequate, indicating a need for ongoing education and practical training to improve their skills in diagnosing oral lesions and cancer prevention.
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Introduction: We present here a literature review focusing on the repercussions of osteoporosis on the oral and maxillofacial complex. Osteoporosis is a silent metabolic disorder characterized by reduced bone mineral density (BMD), which can lead to bone fractures, particularly affecting elderly women. The prevalence of this disease has increased significantly worldwide, and since it accelerates bone resorption also in the jaw bones, some attention has been paid to possible oral and maxillofacial manifestations.

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Introduction: Head and neck radiotherapy can cause hypofunction of the salivary glands. Many studies report that laser photobiomodulation (PBM) is able to minimize radiation-induced hyposalivation, yet there is no consensus about its effects.

Objective: To carry out a meta-analysis of controlled clinical trials that used PBM to prevent radiation-induced hyposalivation.

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Objective: The aim of this study was to evaluate morphological and immunohistochemical features of tooth extraction sites in rats subjected to different antiresorptive drugs.

Materials And Methods: Wistar rats were allocated into 4 groups according to the treatment: (1) alendronate, (2) raloxifene, (3) strontium ranelate, and (4) control. The animals underwent tooth extraction (60th day of treatment) and afterwards were euthanized (90th day of treatment).

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Background: Deoxycholic acid (DCA) was developed by the pharmaceutical industry for aesthetical use in submental fat reduction. It represents the first lipolytic substance approved by the Food and Drug Administration (FDA) for fat reduction in that area.

Aims: This study presents an update of properties and the use of DCA, as well as adverse events and possible complications.

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Xerostomia and hyposalivation are frequent conditions in patients undergoing head and neck radiotherapy, which usually lead to a worsening of quality of life. This study aimed to assess whether photobiomodulation (PBM) can minimize hyposalivation, xerostomia and qualitative changes on saliva and improve quality of life in patients undergoing radiotherapy in short-term follow-up. Twenty-one patients were randomly divided into two groups: sham group (SG) and laser group (LG).

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Purpose: The aim of this study was to evaluate the clinical, histological, hematological, and oxidative stress effects of cannabidiol (CBD) in mice with induced oral mucositis.

Methods: We used 90 mice of the CF-1 strain in which oral mucositis was induced using a protocol with 5-fluorouracil (5-FU) chemotherapy. The animals were divided randomly into 10 study groups.

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Purpose: The aim of this paper was to review the current literature with regard to the use of chlorhexidine and povidone-iodine in the treatment of oral wounds.

Background: Oral mucosa is continuously subjected to physical or chemical injuries, where it becomes a common site for the occurrence of ulcerated lesions. These lesions are susceptible to infections that may delay healing.

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The high frequency and painful profile of inflammatory oral lesions and the lack of an effective drug protocol for their management stimulate the search for pharmacological alternatives for the treatment of these conditions. Cannabidiol is the major non-psychotropic constituent of Cannabis sativa, receiving lately scientific interest because of its potential in the treatment of inflammatory disorders such as asthma, colitis and arthritis. There is little published in the current literature about the use of cannabidiol in oral health.

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What Is Known And Objectives: In addition to its antimicrobial effect, doxycycline has potent anti-inflammatory activity. In view of these pharmacological characteristics, its use in the management of inflammatory, autoimmune and granulomatous diseases has been proposed. The objective of this study was to investigate, through a systematic literature review, the effect of doxycycline on pain and healing of ulcerated lesions of the mouth.

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  • The study investigated the effects of cannabidiol (CBD) on oral wound healing in rats by inducing standardized ulcers on their tongues and administering CBD at varying doses.
  • Although CBD treatment didn't affect the size of the wounds after 3 and 7 days, it did show a reduction in inflammation in the first 3 days compared to the control group.
  • Ultimately, while CBD demonstrated anti-inflammatory properties early in the wound healing process, it did not lead to significant clinical improvement in the healing of oral ulcers.
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  • - The study explored how oral yeast colonization in Sjögren's syndrome patients relates to factors like salivary flow rates, age, and disease progression, using saliva and swab samples from 45 participants, including healthy controls.
  • - Researchers discovered 11 yeast species, primarily finding that Candida albicans was most common among Sjögren's syndrome patients, who had higher counts of it compared to controls, while controls showed a wider variety of yeast species.
  • - The findings indicated that while Candida albicans is the most prevalent yeast in Sjögren's syndrome patients, the research highlighted the presence of various other yeast species, and it noted challenges in identifying most colonies using the culture-PCR methods combined.
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Objective: This study investigated the effect of topical application of 0.12% chlorhexidine, 10% povidone-iodine and 50% erythromycin on the optimization of healing process of traumatic ulcers made on ventral tongue of rats.

Design: Forty-Eight Wistar rats were randomly divided into four groups: control, chlorhexidine (Chx), povidone-iodine (PvI) and erythromycin (Er).

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. The aim of this study was to evaluate stress, anxiety, and salivary alpha-amylase (SAA) activity in patients with recurrent aphthous stomatitis (RAS). The impact of this disease on the life quality was also evaluated.

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  • - Oral squamous cell carcinoma (OSCC) is a major type of oral cancer with a high and stable mortality rate, and the role of tumor-associated macrophages (TAMs) in its progression is significant yet not fully understood.
  • - M2 polarized TAMs are linked to poor clinical outcomes in OSCC, as their interactions with cancer cells promote tumor growth and aggressiveness through certain signaling pathways, reducing patient survival.
  • - The review highlights key interleukins and the Axl receptor's role in influencing TAM polarization to support OSCC progression, emphasizing the need for a deeper understanding of these molecular processes for improved targeted therapies and better patient prognoses.
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Objective: To investigate the effect of granulocyte colony-stimulating factor (G-CSF) on oral mucositis (OM) and on the healing of traumatic ulcers produced in the tongue of rats undergoing radiotherapy (RT).

Study Design: Twenty-seven Wistar rats were assigned to four groups: (1) RT + traumatic ulcer + filgrastim (G-CSF analog; n = 7); (2) RT + traumatic ulcer + saline (n = 7); (3) no RT + traumatic ulcer + filgrastim (n = 7); and (4) no RT + traumatic ulcer (n = 6). The radiation dose was 30 Gy, and medication was filgrastim (10 μg/kg) for 7 days.

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Objective: The aim of this study is to assess the effect of two types of antioxidants, vitamin E (VE) and Aloe vera (AV), on healing of induced oral lesions after radiation in a murine model by clinical and histological analysis.

Methods: The animals were randomly divided into three groups of 12 animals each (400 mg VE, 70 % AV and control) and two time periods (5 and 7 days). They were irradiated with a single dose of 30 Gy, and after 24 h, a lesion was produced on the ventral tongue of each animal.

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The objective of this study was to evaluate the effect of low-level laser therapy (LLLT) on radiotherapy-induced morphological changes and caspase-3 immunodetection in parotids of mice. Forty-one Swiss mice were divided into control, radiotherapy, 2- and 4-J laser groups. The experimental groups were exposed to ionizing radiation in a single session of 10 Gy.

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The aim of the present study was to assess the effect of low-level laser therapy (LLLT) in the treatment of burning mouth syndrome (BMS). A diode laser was used in 78 BMS patients who were randomly assigned into four groups: IR1W, n = 20 (830 nm, 100 mW, 5 J, 176 J/cm2, 50 s, LLLT weekly sessions, 10 sessions); IR3W, n = 20 (830 nm, 100 mW, 5 J, 176 J/cm2, 50 s, three LLLT weekly sessions, 9 sessions); red laser, n = 19 (685 nm, 35 mW, 2 J, 72 J/cm2, 58 s, three LLLT weekly sessions, 9 sessions); and control-group (CG), n = 19. Symptoms were assessed at the end of the treatment and eight weeks later; quality of life related to oral health was assessed using the Oral Health Impact Profile (OHIP-14).

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Objective: The aim of this study was to evaluate the contribution of ultrasonography in the establishment of the diagnosis of nonspecific nodular lesions of the oral soft tissues. We determined the indication of use and reliability of ultrasonography in the field of dentistry, considering whether it was of value in the conclusive diagnosis of these pathologies.

Materials And Methods: We recruited 65 patients from the Oral Medicine Unit of São Lucas Hospital, who had submucosal and subcutaneous nodules, without established diagnosis.

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Radiotherapy is a therapeutic modality frequently employed for patients with head and neck cancer (HNC). It destroys tumor cells, but it is not selective, also affecting healthy tissues and producing adverse effects. One that stands out is oral mucositis because of the morbidity that it is capable of causing.

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  • Granuloma gravidarum (GG) is an inflammatory growth that occurs in the mouths of pregnant women due to low-grade irritants and hormonal changes.
  • A study from the Oral Medicine Division at São Lucas Hospital analyzed 41 GG cases from 1980 to 2012, focusing on patient age, lesion location, appearance, and gestation period.
  • The findings revealed GG commonly appears during the third trimester, mainly affects the gums, typically has a reddish color and average size of 1.5 cm, and is often linked to local irritants.
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  • * Key findings indicate that low CD4+ counts, alcohol use, and female gender significantly increase the risk of oral candidiasis, while hairy leukoplakia is linked to factors like higher viral loads and smoking.
  • * The study concludes that immunodeficiency levels and lifestyle choices like smoking and drinking heighten the risk of oral infections in HIV-positive individuals, regardless of their antiretroviral treatment.
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Objective: This study aimed to investigate local and systemic effects of 2 concentrations of hyaluronic acid (HA) in rats.

Study Design: Fifty-four female Wistar rats were allocated to 3 treatment groups (25 mg/mL HA, 5.5 mg/mL HA, and 0.

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