Publications by authors named "Thao Thi Do"

Background: Oral cancer (OC) is the sixth most common cancer worldwide. There have been few studies on OC in high-risk populations. This study aimed to describe the clinical features, staging, grading, and risk factors in OC patients.

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Aim: This study aimed to evaluate the impact of a combination of immediate implant placement with maxillary sinus augmentation (MSA) solely using platelet-rich fibrin (PRF) on guided bone regeneration.

Materials And Methods: An interventional before-after (pre-post) study design was used with 30 dental patients (≥18 years of age; 14 males and 16 females) with initial bone heights ranging between 4 and 6 mm. Following the general check-up and the creation of a study model, the planned implant location demonstrated an external right maxilla diameter of more than 5 mm, thereby validating the cone-beam computed tomography (CBCT) radiograph.

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  • The mandibular canal (MC) is a crucial anatomical structure that needs careful assessment using cone beam computed tomography (CBCT) before surgical procedures.
  • A study analyzed 112 CBCT images of Vietnamese patients to determine the MC's dimensions and its relationship with nearby anatomical features.
  • Results showed that the average diameter of the MC was similar regardless of missing teeth, highlighting the importance of CBCT in treatment planning to prevent nerve damage during dental surgeries.
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The tight junction (TJ), a type of cell-cell junction, regulates the permeability of solutes across epithelial and endothelial cellular sheets and is believed to maintain cell polarity. However, recent studies have provided conflicting views on the roles of TJs in epithelial polarity. Membrane proteins, including occludin, claudin, and the junction adhesion molecule, have been identified as TJ components.

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  • Class III malocclusion is challenging to treat, often requiring maxillary protraction to address underlying maxillary retrognathia.
  • A 16-year-old Vietnamese girl exhibited severe anterior crossbite and Class III malocclusion, characterized by a prognathic mandible and retrognathic maxilla, without any noted medical issues.
  • The recommended treatment involved using multiloop edgewise archwire (MEAW) alongside temporary anchorage devices (TADs) and modified Class III elastics, offering a non-surgical camouflage therapy for this condition.
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To evaluate the effects of facemask therapy on skeletal class III malocclusion in the Vietnamese population. This interventional trial enrolled a total of 31 children, dividing them into two age groups: Children aged 7 to 9 (54.8%), who were in the pre-pubescent or early mixed dentition stages, comprised one group.

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  • The study aimed to compare the effects of NiTi closed-coil springs and elastomeric chains on apical root resorption and alveolar bone changes after maxillary canine closure in patients with Angle Class I malocclusion.
  • A randomized clinical trial involving 31 adults used cone-beam computed tomography and cephalometric radiographs before and after treatment to measure the outcomes.
  • Both appliances caused similar tooth root resorption, with no statistically significant difference in root length change; however, both treatments positively affected alveolar bone levels significantly.
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  • This study reviews key sleep-related disorders like sleep bruxism (SB), obstructive sleep apnea (OSA), and gastroesophageal reflux disease (GERD) and their effects on dental treatments.
  • Evidence indicates these conditions are interconnected and can influence each other, highlighting the importance of understanding their relationships.
  • Dental professionals have a crucial role in recognizing and managing these disorders to improve patient outcomes.
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  • A series of 14 conjugates combining 2α,3β,23-triacetyl-madecassic acid and silybin were created and tested for their effects on HepG2 cancer cells.
  • The conjugates were connected at specific positions (C-7 or C-3) and showed greater cytotoxicity than their parent compounds in initial tests.
  • The most effective conjugate, identified as compound 8, significantly impacted other cancer cell lines and induced specific cellular processes like apoptosis and cell cycle arrest, highlighting its unique biological effects compared to madecassic acid alone.
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Objective: This study investigated and compared the perceived stress levels and coping strategies of dental students in Indonesia and Vietnam during the COVID-19 pandemic.

Materials And Methods: A cross-sectional survey was conducted online in 2022 for dental students from the University of Indonesia and Can Tho University, Vietnam (n = 304). Perceived stress levels and coping strategies were assessed using a self-administered questionnaire about student sociodemographic factors, learning experiences, coping strategies, stress-related factors, and stress levels.

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  • Individuals with borderline Class III malocclusion display specific traits like retrusive upper lips and retroclined incisors, aiding in diagnosis.
  • A case study of a 22-year-old Vietnamese woman revealed issues with her front teeth and confidence in smiling, alongside a history of dental treatment.
  • Orthodontic camouflage was used successfully, resulting in a Class I bite relationship and significant aesthetic improvements to her smile and facial profile within 10 months, without the need for surgery.
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Context: Optimal restoration methods for endodontically treated teeth (ETTs) have always remained an ongoing discussion among physicians in this day and age. ETTs have a tendency to fracture when chewing, compared to initial teeth. From the perspective of biology, preserving and restoring tooth structure is critical to maintaining biomechanical, functional, and esthetic harmony.

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Cordyceps militaris is a well-known medicinal mushroom in Asian countries. This edible fungus has been widely exploited for traditional medicine and functional food production. C.

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Aim: Anticancer treatment is required to provide effective and safe patient medicines. This research aided in developing and applying nanoparticles (NPs) for cancer treatment.

Background: The poor solubility of paclitaxel (PTX) restricts its therapeutic efficacy because of allergic side effects caused by formulation excipients.

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  • The study assessed Southeast Asian dental schools' faculty members' views on online learning during COVID-19 using a 43-question questionnaire.
  • Participants (183 lecturers) reported a neutral effectiveness of online learning, highlighting challenges like lack of interaction but recognizing advantages such as flexibility and improved communication.
  • Ultimately, faculty members expressed a positive outlook on continuing blended learning approaches in dentistry beyond the pandemic.
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  • Gingival color significantly impacts smile aesthetics, with hyperpigmentation leading to unesthetic appearances, especially in individuals with a gummy smile. This study aims to evaluate the efficacy of carbon dioxide (CO) laser treatment for gingival hyperpigmentation.
  • Conducted in Vietnam with 38 patients, the study used assessments like Ponnaiyan classification and the Hedin melanin index to measure pigmentation and evaluated pain levels during treatment with the Visual Analog Scale (VAS).
  • Results indicated that CO laser treatment resulted in minimal pain and 100% complete epithelization within a week, with high rates of improvement in pigmentation scores after 12 weeks, confirming it as a safe and effective treatment option.
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Sixteen sesquiterpenoids including two new ones, homalolides A - B ‒, were firstly isolated from the methanolic extract of the rhizomes of collected in Vietnam. The structures and relative stereochemistry of new compounds were elucidated by 1D-/2D-NMR, IR, UV and HRESIMS analyses. The GCMS experiment demonstrated that homalolide A () is an artifact due to the methylation during methanolic extraction process.

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This study aimed to discover whether using maltogenic amylase (MAse) to modify starch in germinated brown rice flour may enhance slow digestion starch and release more bioactive compounds (BCs) content. To achieve this aim, the starch was modified with four levels of MAse (0 U, 133 U, 266 U and 399 U MAse/g flour) for 1 hr at pH 5 and then spray-dried to make modified flour. The biochemical impacts of the products were then accessed in normal and type 2 diabetic mice for 4 weeks.

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  • Six new -inositol derivatives were found in Vietnamese leaves and their chemical structures were determined using advanced analytical methods like NMR and HRESIMS.
  • All compounds were tested for their ability to inhibit nitric oxide production triggered by lipopolysaccharide in RAW 264.7 macrophage cells.
  • One compound showed strong inhibitory effects on NO production with an IC value of 7.1 μM.
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The aggregation of three different cyclodextrins (CDs): 2-hydroxypropyl-β-cyclodextrin (HP-β-CD), 2-hydroxypropyl-γ-cyclodextrin (HP-γ-CD) and sulfobutylether-β-cyclodextrin (SBE-β-CD) was studied. The critical aggregation concentration (cac) of these three CDs is quite similar and is situated at ca. 2% (m/v).

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A new polyoxygenated cyclohexene, (-)-3-O-debenzoylzeylenone (1), and a new megastigmane glycoside, grandionoside A (2), were isolated from the aerial parts of Uvaria grandiflora collected in Vietnam, together with ten known compounds including polyoxygenated cyclohexenes (3-6), a triterpenoid (7), an alkaloid (8), a long chain alcohol (9), hexenyl glycopyranoside (10), and saponins (11-12). Their chemical structures were elucidated by a combination of extensive NMR spectroscopy with X-ray crystallographic analysis for 1, and chemical conversion for 2. Compound 1 exhibited significant cytotoxicity against the LU-1 and SK-Mel-2 cell lines with IC50 values of 4.

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  • The study compared the performance of four lipid-based formulations and one micronized formulation of fenofibrate, assessing their solubility and concentration in vitro and in vivo.
  • In simulated gastric and intestinal fluids, only one lipid system (Tween 80-Captex 200P) maintained stable fenofibrate concentrations, while others achieved temporary supersaturation.
  • Despite differences in in vitro performance, in vivo results showed no significant variations among the lipid formulations, all outperforming the micronized version due to the rats' continuous bile excretion enhancing the solubilization of lipophilic drugs.
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