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1.
BMC Oral Health ; 24(1): 370, 2024 Mar 22.
Article in English | MEDLINE | ID: mdl-38519922

ABSTRACT

OBJECTIVES: Historically, the prevalence of caries has undergone significant changes, particularly increasing with the industrialization of sugar consumption. When examining ancient populations, lower caries rates are discovered, attributed in part to dietary factors. These populations consumed abrasive foods, leading to occlusal wear and reduced non-axial occlusal forces, potentially influencing Non-Carious Cervical Lesions (NCCLs). Although some attribute NCCLs to abfraction, the mechanism remains debated. This systematic review aims to evaluate the presence of NCCLs in ancient populations, shedding light on the factors contributing to their occurrence. MATERIALS AND METHODS: The present systematic review was registered on PROSPERO, and the manuscript was prepared following PRISMA guidelines. RESULTS: After the literature search and article screening, data from 6 studies were included in the meta-analysis, with only 2 reporting NCCLs in ancient skulls, encopassing 17 subjects in 805 examined skulls, suggesting their presence even before the widespread use of toothbrushes. This finding indicates a potential etiopathogenic mechanism linked to abfraction, but the cause is complex and involves abrasive and erosive factors closely tied to dietary habits. CONCLUSIONS: In summary, NCCLs were present in ancient populations, albeit with a much lower prevalence. Their occurrence cannot be solely attributed to wear mechanisms but must be connected to abrasive factors related to diet or practices with religious and cultural significance, such as the use of labrets. CLINICAL RELEVANCE: Th the knowledge of NCCLs presence in acient sculls is crucial today for better understand the associated risk factors. In this context, the analysis of ancient skulls allows us to discern the role that tooth brushing and diet played in the formation of NCCLs, over the past century.


Subject(s)
Dental Caries , Tooth Attrition , Tooth Diseases , Adult , Humans , Tooth Cervix/pathology , Tooth Attrition/epidemiology , Dental Caries/pathology , Risk Factors
2.
Oral Dis ; 2023 Jul 27.
Article in English | MEDLINE | ID: mdl-37501500

ABSTRACT

OBJECTIVES: Head and neck squamous cell carcinoma (HNSCC) poses a diagnostic and therapeutic challenge worldwide and is associated with a poor survival rate. Due to the variability in the efficacy of treatments for HNSCC, new predictive biomarkers of therapy outcomes are needed. Recently, we developed an algorithm that employs the mutational profile of TP53 as an independent prognostic factor in HNSCC. In this study, we investigated its role as a predictive biomarker of treatment outcomes in HNSCC patients. We also tested the usefulness of two classification systems for TP53 mutational landscapes. MATERIALS AND METHODS: Clinical and genomic data were retrieved from The Cancer Genome Atlas database. We built a multivariate stepwise backward binary regression model to assess the role of TP53 mutations in predicting therapeutic outcomes. RESULTS: Cases harbouring high-risk-of-death mutations reported an odds ratio of 3.301 for stable or progressive disease compared to wild-type cases, while no significant difference in treatment outcomes was found between cases with low-risk-of-death mutations and wild-type TP53. Our analysis found that older patients with a history of alcohol consumption had a higher risk of stable/progressive disease. CONCLUSIONS: This study improves current evidence on the role of TP53 mutations in treatment response in HNSCC patients.

3.
Oral Dis ; 2023 Jan 20.
Article in English | MEDLINE | ID: mdl-36680407

ABSTRACT

OBJECTIVE: Oral lesions received increased attention as likely new signs or secondary manifestations of COVID-19. Therefore, we clinically examined oral cavity of patients with COVID-19 and investigated oral lesions and patient comorbidities as possible risk factors of COVID-19 disease outcome. METHODS: From January to March 2022, a prospective study was conducted by recruiting all COVID-19 patients admitted to the Intensive Care Unit and Respiratory Intensive Care Unit of Maxi-Emergencies Hospital in Bari, Italy. RESULTS: From the enrolled 103 COVID-19 patients, 46.6% were females and 53.4% were males. Findings show that risk of presenting with severe COVID-19 disease was higher in patients who developed oral lesions related to COVID-19 than those with no oral lesions (RR = 7.998, p = .002). Next, patients with concomitant autoimmune diseases were at higher risk of a negative COVID-19 disease outcome than those without comorbidities (OR = 8.838, p = .026). CONCLUSIONS: COVID-19-related lesions of oral mucosa should not be ignored as they can be early and easily detectable signs of severe COVID-19 disease condition, thus, serving as a prevention measure for any potential unfortunate event. Findings of this study, without implying causation, offer a direction for future investigations that aim to confirm the presence of specific oral lesions in COVID-19 patients as signs of severe disease progression.

4.
Pediatr Dermatol ; 40(3): 489-493, 2023.
Article in English | MEDLINE | ID: mdl-37019629

ABSTRACT

Oral lichen planus usually occurs in adults; there are no clear data regarding the incidence and the clinical features of oral lichen planus in children. This paper reports clinical findings, treatments, and outcomes of 13 Italian patients with oral lichen planus in childhood diagnosed between 2001 and 2021. The most common finding was keratotic lesions with reticular or papular/plaque-like patterns, confined to the tongue in seven patients. Although oral lichen planus in childhood is rare and the malignant transformation index is unknown, specialists must be aware of its characteristics and oral mucosal lesions must be correctly diagnosed and managed.


Subject(s)
Lichen Planus, Oral , Lichen Planus , Adult , Humans , Child , Lichen Planus, Oral/diagnosis , Lichen Planus, Oral/epidemiology , Lichen Planus, Oral/pathology , Tongue/pathology , Cell Transformation, Neoplastic , Research , Lichen Planus/diagnosis , Lichen Planus/epidemiology
5.
Clin Oral Investig ; 27(6): 3057-3069, 2023 Jun.
Article in English | MEDLINE | ID: mdl-36786956

ABSTRACT

OBJECTIVES: Oral lichen planus with exclusive keratotic reticular, papular, and/or plaque-like lesions (K-OLP) is a clinical pattern of OLP that may be associated with a complex symptomatology and psychological alteration. The aim of the study was to evaluate the prevalence of anxiety (A) and depression (D) in patients with K-OLP, analyzing the potential predictors which can affect mental health status. METHODS: Three hundred K-OLP patients versus 300 healthy controls (HC) were recruited in 15 Italian universities. The Numeric Rating Scale (NRS), Total Pain Rating Index (T-PRI), and Hamilton Rating Scales for Depression and for Anxiety (HAM-D and HAM-A) were administered. RESULTS: The K-OLP patients showed statistically higher scores in the NRS, T-PRI, HAM-D, and HAM-A compared with the HC (p-value < 0.001**). A and D were found in 158 (52.7%) and 148 (49.3%) K-OLP patients. Strong linear correlations were identified between HAM-A, HAM-D, NRS, T-PRI, and employment status and between HAM-D, HAM-A, NRS, T-PRI, employment status, and female gender. Multivariate logistic regression revealed that HAM-D and HAM-A showed the greatest increase in the R2 value for A and D in the K-OLP patients, respectively (DR2 = 55.5% p-value < 0.001**; DR2 = 56.5% p-value < 0.001**). CONCLUSIONS: The prevalence of A and D is higher in the K-OLP patients compared with the HC, also found in K-OLP subjects without pain, suggesting that the processing of pain may be in a certain way independent of the processing of mood. CLINICAL RELEVANCE: Mood disorders and pain assessment should be carefully performed in relation to K-OLP to obtain a complete analysis of the patients.


Subject(s)
Depression , Lichen Planus, Oral , Humans , Female , Depression/epidemiology , Lichen Planus, Oral/epidemiology , Lichen Planus, Oral/psychology , Anxiety/epidemiology , Pain , Prevalence
6.
BMC Oral Health ; 22(1): 184, 2022 05 18.
Article in English | MEDLINE | ID: mdl-35585582

ABSTRACT

BACKGROUND: Oral lichen planus (OLP) is an immune-mediated inflammatory chronic disease of the oral mucosa, with different patterns of clinical manifestations which range from keratotic manifestations (K-OLP) to predominantly non-keratotic lesions (nK-OLP). The aim of the study was to analyze the differences in the clinical, psychological profile and symptoms between Italian patients of the North and Central-South with K-OLP and nK-OLP. METHODS: 270 K-OLP and 270 nK-OLP patients were recruited in 15 Italian universities. The Numeric Rating Scale (NRS), Total Pain Rating Index (T-PRI), Hamilton Rating Scales for Depression and for Anxiety (HAM-D and HAM-A), Pittsburgh Sleep Quality Index (PSQI), and Epworth Sleepiness Scale (ESS) were administered. RESULTS: The Central-South K-OLP (CS-K-OLP) patients reported a higher frequency of pain/burning compared with the K-OLP patients of the North (N-K-OLP) with higher scores in the NRS and T-PRI (p value < 0.001**). The CS-K-OLP and the CS-nK-OLP patients showed higher scores in the HAM-D, HAM-A, PSQI and ESS compared with the Northern patients (p value < 0.001**). Multivariate logistic regression revealed that the NRS and T-PRI showed the greatest increase in the R2 value for the CS-K-OLP (DR2 = 9.6%; p value < 0.001**; DR2 = 9.7% p value < 0.001**; respectively) and that the oral symptoms (globus, itching and intraoral foreign body sensation) and PSQI showed the greatest increase in the R2 value for the CS-nK-OLP (DR2 = 5.6%; p value < 0.001**; DR2 = 4.5% p value < 0.001** respectively). CONCLUSIONS: Pain and mood disorders are predominant in patients with OLP in the Central-South of Italy. Clinicians should consider that the geographical living area may explain the differences in oral symptoms and psychological profile in OLP.


Subject(s)
Lichen Planus, Oral , Anxiety , Cross-Sectional Studies , Humans , Lichen Planus, Oral/diagnosis , Pain , Pathology, Oral
7.
Medicina (Kaunas) ; 58(7)2022 Jul 04.
Article in English | MEDLINE | ID: mdl-35888613

ABSTRACT

Background and Objectives: In the presence of a persistent endodontic lesion or endodontic failure, the alternative for the recovery of the dental element is endodontic retreatment or endodontic surgery, which consists in the surgical removal of the root apices with retrograde closure of the endodontium. The objective of this systematic review and meta-analysis was to provide an updated value of the Risk Ratio between the two types of treatment in order to offer to clinicians who propose a non-surgical endodontic retreatment or an endodontic surgery a direct comparison. Materials and Methods: The revision was performed according to PRISMA indications: three databases (PubMed, Scopus and Cochrane register) were consulted through the use of keywords relevant to the revision topic: surgical endodontic retreatment, endodontic retreatment, apicoectomy. This search produced 7568 records which, after eliminating duplicates and applying the inclusion and exclusion criteria, resulted in a total of seven included articles. The meta-analyses were conducted by applying fixed-effects models, given the low percentage of heterogeneity. In addition, trial sequency analysis (TSA) was performed for the analysis of the statistical power of the results and GRADE for the quality of the evidence. Results: The results of the meta-analyses' data report an aggregate risk ratio (RR) between non-surgical endodontic retreatment and surgical endodontic retreatment of: 1.05 [0.74, 1.47] at one year of follow-up; RR 2.22 [1.45, 3.41] at two years of follow-up; an RR 1.08 [0.73 1.62] for a follow-up period of 3-4 years; and an RR 0.92 [0.53, 1.61] for a follow-up period of 8-10 years. Conclusions: The results of the present meta-analysis show that in the long term, the risk of failure is identical for the two groups, and there is only a slightly higher risk of failure for non-surgical endodontic retreatments, when only two years of follow-up are considered.


Subject(s)
Retreatment , Humans , Risk
8.
Eur J Haematol ; 105(3): 335-343, 2020 Sep.
Article in English | MEDLINE | ID: mdl-32441419

ABSTRACT

BACKGROUND AND AIMS: Anagrelide is a drug effective in reducing platelet counts in essential thrombocythemia (ET) and Ph1-negative myeloproliferative neoplasms. The aim of this study was to evaluate the real-life use of anagrelide in patients with ET followed over 25 years at the Haematological Institutes belonging to "Ph1-negative Myeloproliferative Neoplasms Latium Group." PATIENTS AND METHODS: Eligibility criteria were diagnosis of ET and treatment with anagrelide. Data were collected through an ad hoc case report form. RESULTS: One hundred and fifty patients received anagrelide for a median time of 7.4 years (0.1-23.2). Anagrelide was administered as first-line therapy in 34.7% of patients, as second-line in 52% and as third-line in 13.3%: 85.4% responded to therapy. Sixty-eight/136 evaluable patients reported side effects: palpitations, peripheral vasodilation, anaemia, diarrhoea and gastric distress. Fourteen thrombotic (arterial 10, venous 4) and 51 bleeding events (minor 48, major 3) occurred. Sixteen/150 (10.6%) patients developed secondary myelofibrosis and 3/150 (2%) an acute myeloid leukaemia. CONCLUSIONS: In our experience, anagrelide is an effective drug in reducing platelet levels in a high percentage of patients with ET. It is especially addressed to younger people. A careful assessment of the thrombotic risk and monitoring of cardiac function, at diagnosis and during follow-up, is mandatory.


Subject(s)
Quinazolines/therapeutic use , Thrombocythemia, Essential/drug therapy , Thrombocythemia, Essential/epidemiology , Adult , Age Factors , Aged , Aged, 80 and over , Anemia/diagnosis , Anemia/etiology , Disease Management , Disease Susceptibility , Drug Substitution , Female , Follow-Up Studies , Health Care Surveys , Humans , Italy/epidemiology , Male , Middle Aged , Pregnancy , Pregnancy Complications, Hematologic , Prognosis , Quinazolines/administration & dosage , Quinazolines/adverse effects , Retreatment , Retrospective Studies , Thrombocythemia, Essential/diagnosis , Thrombocythemia, Essential/etiology , Thrombosis , Treatment Outcome , Young Adult
9.
13.
Eur J Haematol ; 96(6): 643-9, 2016 Jun.
Article in English | MEDLINE | ID: mdl-26277477

ABSTRACT

At present, very few data are available on deferasirox (DFX) in the treatment of patients with Philadelphia-negative myeloproliferative neoplasms in fibrotic phase (FP-MPN) and transfusion dependence. To address this issue, a retrospective analysis of 28 patients (22 male and 6 female) with FP-MPN and iron overload secondary to transfusion dependence was performed, based on patients enrolled in the database of our regional cooperative group who received treatment with DFX. DFX was started after a median interval from diagnosis of 12.8 months (IR 7.1-43.1) with median ferritin values of 1415 ng/mL (IR 1168-1768). Extra-hematological toxicity was reported in 16 of 28 patients (57.1%), but only two patients discontinued treatment due to toxicity. Among 26 patients evaluable for response (≥6 months of treatment), after a median treatment period of 15.4 months (IR 8.1-22.3), 11 patients (42.3%) achieved a stable and consistent reduction in ferritin levels <1000 ng/mL. As for hematological improvement, 6 of 26 patients (23%) showed a persistent (>3 months) rise of Hb levels >1.5 g/dL, with disappearance of transfusion dependence in four cases. Treatment with DFX is feasible and effective in FP-MPN with iron overload. Moreover, in this setting, an erythroid response can occur in a significant proportion of patients.


Subject(s)
Benzoates/therapeutic use , Erythropoiesis/drug effects , Iron Chelating Agents/therapeutic use , Iron Overload/drug therapy , Iron Overload/etiology , Myeloproliferative Disorders/complications , Myeloproliferative Disorders/pathology , Triazoles/therapeutic use , Aged , Benzoates/administration & dosage , Benzoates/adverse effects , Chelation Therapy , Deferasirox , Erythrocyte Indices , Female , Fibrosis , Follow-Up Studies , Humans , Iron Chelating Agents/administration & dosage , Iron Chelating Agents/adverse effects , Iron Overload/blood , Iron Overload/diagnosis , Male , Middle Aged , Myeloproliferative Disorders/mortality , Myeloproliferative Disorders/therapy , Retrospective Studies , Transfusion Reaction , Treatment Outcome , Triazoles/administration & dosage , Triazoles/adverse effects
14.
Am J Hematol ; 91(3): 318-21, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26748894

ABSTRACT

Spleen enlargement, present in 10-20% of Essential Thrombocythemia (ET) patients at diagnosis, is a feature clinically easy to assess, confirmable by echography with a very low chance of misinterpretation. Nonetheless, the clinical and prognostic role of splenomegaly has been seldom evaluated. From 1979 to 2013, 1297 ET patients retrospectively collected in the database of the Lazio Cooperative Group and Bologna University Hospital were evaluable for spleen enlargement at diagnosis and included in the analysis. On the whole, spleen was enlarged in 172/1297 (13.0%) patients; in most cases (94.8%) splenomegaly was mild (≤5 cm). Patients with splenomegaly were younger, predominantly male, presented higher platelet count and JAK2V617F allele burden and had a lower incidence of concomitant cardiovascular risk factors. At least one thrombotic event during follow-up occurred in 97/1,125 (8.6%) patients without spleen enlargement compared to 27/172 (15.7%) patients with spleen enlargement (P = 0.003). Despite comparable use of cytoreductive/antiplatelet therapies in the two groups, the cumulative risk of thrombosis at 5 years was significantly higher in patients with baseline splenomegaly (9.8% versus 4.4% in patients without splenomegaly, P = 0.012). In multivariate analysis exploring risk factors for thrombosis, splenomegaly retained its negative prognostic role, together with previous thrombosis, leucocyte count and male gender. Baseline splenomegaly seems to be an independent additional risk factor for thrombosis in nonstrictly WHO-defined ET patients. This data could be useful in the real-life clinical management of these patients.


Subject(s)
Splenomegaly/complications , Thrombocythemia, Essential/complications , Thrombosis/etiology , Adult , Aged , Databases, Factual , Female , Humans , Janus Kinase 2/genetics , Male , Middle Aged , Mutation , Platelet Aggregation Inhibitors/administration & dosage , Platelet Aggregation Inhibitors/therapeutic use , Platelet Count , Prognosis , Retrospective Studies , Risk Factors , Splenomegaly/diagnostic imaging , Splenomegaly/epidemiology , Thrombocythemia, Essential/diagnostic imaging , Thrombocythemia, Essential/epidemiology , Thrombosis/epidemiology , Thrombosis/prevention & control , Ultrasonography
15.
Am J Hematol ; 89(5): 542-6, 2014 May.
Article in English | MEDLINE | ID: mdl-24481665

ABSTRACT

To identify prognostic factors affecting thrombosis-free survival (TFS) and overall survival (OS), we report the experience of a Regional cooperative group in a real-life cohort of 1,144 patients with essential thrombocythemia (ET) diagnosed from January 1979 to December 2010. There were 107 thrombotic events (9.4%) during follow-up [60 (5.3%) arterial and 47 (4.1%) venous thromboses]. At univariate analysis, risk factors for a shorter TFS were: age >60 years (P < 0.0054, 95% CI 1.18-2.6), previous thrombosis (P < 0.0001, 95% CI 1.58-4.52) and the presence of at least one cardiovascular risk factor (P = 0.036, 95% CI 1.15-3.13). Patients with a previous thrombosis occurred ≥24 months before ET diagnosis had a shorter TFS compared to patients with a previous thrombosis occurred <24 months (P = 0.0029, 95% CI 1.5-6.1); furthermore, patients with previous thrombosis occurred <24 months did not show a shorter TFS compared with patients without previous thrombosis (P = 0.303, 95% CI 0.64-3.21). At multivariate analysis for TFS, only the occurrence of a previous thrombosis maintained its prognostic impact (P = 0.0004, 95% CI 1.48-3.79, RR 2.36). The 10-year OS was 89.9% (95% CI 87.3-92.5): at multivariate analysis for OS, age >60 years (P < 0.0001), anemia (P < 0.0001), male gender (P = 0.0019), previous thromboses (P = 0.0344), and white blood cell >15 × 10(9) /l (P = 0.0370) were independent risk factors. Previous thrombotic events in ET patients are crucial for TFS but their importance seems related not to the occurrence per se but mainly to the interval between the event and the diagnosis.


Subject(s)
Thrombocythemia, Essential/mortality , Thrombosis/mortality , Aged , Female , Humans , Kaplan-Meier Estimate , Male , Middle Aged , Prognosis , Retrospective Studies , Risk Factors , Sex Factors , Survival Analysis , Thrombocythemia, Essential/epidemiology , Thrombosis/epidemiology
16.
Case Rep Dent ; 2024: 2667323, 2024.
Article in English | MEDLINE | ID: mdl-38304281

ABSTRACT

Breast cancer is the most common cancer in women and the second leading cause of cancer-related death. Breast cancer manifestations in the head and neck are relatively rare, and they are mostly bony metastasis to the mandible and maxilla. In this paper, we present a case report of a metastatic tumor in the mandibular angle originating from breast carcinoma. A 32-year-old female patient with a paresthesia/anesthesia in the left mandibular area was referred to us to aid in the differential diagnosis between osteonecrosis and metastasis. Her medical history revealed a radical bimastectomy 3 years ago for invasive lobular carcinoma of the breasts. Additionally, she received chemotherapy and radiotherapy 3 years ago, and intravenous zoledronic acid was administered every 3 weeks. Intraoral examination did not reveal any mucosal ulcer or fistula, and there was no radiological evidence of cyst. The patient demonstrated good oral hygiene. Palpable regional left submandibular lymph nodes and a few swellings on the lateral angular mandibular surface were observed. Cone-beam computed tomography (CBCT) and positron emission tomography (PET) were performed. CBCT showed small poorly diffused radiopacity in proximity to the mandibular angle on both medial and lateral surfaces. PET showed fluoro-2-deoxy-D-glucose uptake in the mandible in the left angle surface area. Based on the patient's clinical history, signs, symptoms, and tomographic evidence, we were able to diagnose mandibular metastasis. This case also highlights the importance of proficiency in reading tomographic examinations, which can be carried out in dental clinics for various purposes. In the absence of symptoms, misdiagnosis can occur, underscoring the significance of accurate interpretation and diagnosis.

17.
J Cancer ; 15(2): 293-308, 2024.
Article in English | MEDLINE | ID: mdl-38169656

ABSTRACT

Head and neck cancers (HNC) are a worldwide health problem, accounting for over 5% of all types of cancers. Their varied nature makes it sometimes difficult to find clear explanations for the molecular mechanisms that underline their onset and development. While chemio- and radiotherapy are clearly not to be dismissed, we cannot undervalue the effect that polyphenols - especially dietary polyphenols - can have in helping us to cope with this medical emergency. By influencing several different proteins involved in numerous different metabolic pathways, polyphenols can have a broad spectrum of biological action and can hopefully act synergistically to tackle down head and neck cancer. Moreover, being natural molecules, polyphenols does not present any side effects and can even enhance drugs efficacy, making our clinical therapy against head and neck cancer more and more effective. Certainly, oxidative stress plays an important role, altering several molecular pathways, lowering the body's defenses, and ultimately helping to create a microenvironment conducive to the appearance and development of the tumor. In this regard, the regular and constant intake of foods rich in polyphenols can help counteract the onset of oxidative stress, improving the health of the general population. In this review, we highlight the role of polyphenols in managing oxidative stress, with such positive effects that they can be considered new tools to use in our anti-head and neck cancer strategy.

18.
Life (Basel) ; 14(1)2023 Dec 28.
Article in English | MEDLINE | ID: mdl-38255670

ABSTRACT

The progressive reappearance of Zika virus (ZIKV) infections since October 2013 and its circulation in >70 countries and territories (from French Polynesia to Brazil and other countries in the Americas, with sporadic spread in Europe and the East) has long been reported as a global public health emergency. ZIKV is a virus transmitted by arthropods (arboviruses), mainly by Aedes mosquitoes. ZIKV can also be transmitted to humans through mechanisms other than vector infection such as sexual intercourse, blood transfusions, and mother-to-child transmission. The latter mode of transmission can give rise to a severe clinical form called congenital Zika syndrome (CZS), which can result in spontaneous abortion or serious pathological alterations in the fetus such as microcephaly or neurological and orofacial anomalies. In this study, beside a succinct overview of the etiological, microbiological, and epidemiological aspects and modes of transmission of Zika virus infections, we have focused our attention on the pathogenetic and histopathological aspects in pregnancy and the pathogenetic and molecular mechanisms that can determine microcephaly, and consequently the clinical alterations, typical of the fetus and newborns, in a subject affected by CZS.

19.
Minerva Dent Oral Sci ; 72(1): 45-53, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36847743

ABSTRACT

BACKGROUND: The long-term success of implant therapy depends not only on proper osseointegration, but also on the healing of the epithelium and the quality of the biological seal on the abutment and on the implant neck. This study aims to evaluate the possible use of dentinal adhesives on the surface of the transmucosal path of dental implants in order to create a hermetic seal between keratinized epithelium and abutment. METHODS: Four sections of 12 µm thickness were obtained from a sample of the oral mucosa. Scotchbond TM Universal Adhesive (3M ESPE, Seefeld, Germany) was carefully applied both to the samples and to the transmucosal path of titanium abutment (Win-Six, BioSAFin, Italy). The adhesives were polymerized. FT-IR analysis was performed on: 1) polymerized Scotchbond Universal Adhesive (3M ESPE, Seefeld, Germany); 2) the interface between the titanium abutment and the adhesive; 3) the interface between the adhesive and the mucosa; 4) the mucosa samples. RESULTS: Comparing the spectra, it emerged that the adhesive has established chemical bonds both on titanium and on the keratinized mucosa, involving different types of chemical interactions. CONCLUSIONS: The results of this in-vitro study are encouraging. In the future biocompatibility and comparative study with other adhesives will be required.


Subject(s)
Caniformia , Mouth Mucosa , Animals , Spectroscopy, Fourier Transform Infrared , Titanium , Research Design
20.
J Clin Med ; 12(14)2023 Jul 21.
Article in English | MEDLINE | ID: mdl-37510944

ABSTRACT

The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has led to significant morbidity and mortality worldwide since its declaration as a global pandemic in March 2020. Alongside the typical respiratory symptoms, unusual clinical manifestations such as oral lichen planus (OLP) have been observed. OLP is a chronic inflammatory mucocutaneous dermatosis that results from a cell-mediated reaction, and its pathogenesis involves the loss of immunological tolerance. OLP has been associated with several triggering factors, such as certain drugs, stress, smoking, and even some viruses. Exposure to the spike protein antigen of SARS-CoV-2 during an infection can trigger autoimmune reactions and lead to the onset or flare of OLP. The E3 protein ligase TRIM21, which is identified in the lamina propria of OLP lesions, is overexpressed in COVID-19 patients and plays a critical role in autoimmune pathologies. Furthermore, the psychological stress of the lockdown and quarantine can be a trigger for the onset or exacerbation of OLP. However, the diagnosis of OLP is complex and requires a biopsy in order to confirm a clinical diagnosis, rule out other pathologies, and establish the most appropriate therapeutic procedure. Further research is needed to understand the potential link between Co-19 and OLP.

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