Plasmonic nanoparticle sensors: current progress, challenges, and future prospects.

Plasmonic nanoparticles (NPs) have played a significant role in the evolution of modern nanoscience and nanotechnology in terms of colloidal synthesis, general understanding of nanocrystal growth mechanisms, and their impact in a wide range of applications. They exhibit strong visible colors due to localized surface plasmon resonance (LSPR) that depends on their size, shape, composition, and the surrounding dielectric environment. Under resonant excitation, the LSPR of plasmonic NPs leads to a strong field enhancement near their surfaces and thus enhances various light-matter interactions.

Spectral Analysis Methods for Improved Resolution and Sensitivity: Enhancing SPR and LSPR Optical Fiber Sensing.

Biochemical-chemical sensing with plasmonic sensors is widely performed by tracking the responses of surface plasmonic resonance peaks to changes in the medium. Interestingly, consistent sensitivity and resolution improvements have been demonstrated for gold nanoparticles by analyzing other spectral features, such as spectral inflection points or peak curvatures. Nevertheless, such studies were only conducted on planar platforms and were restricted to gold nanoparticles.

Artificial intelligence for oral cancer diagnosis: What are the possibilities?

Oral cancer could be prevented. The primary strategy is based on prevention. Most patients with oral cancer present to the hospital network with advanced staging and a low chance of cure.

Tomographic study of Jaw bone changes in patients with bisphosphonate-related osteonecrosis.

Background: Bisphosphonates (BP) are synthetic pyrophosphate-like substances with antiresorptive properties and specifically affect osteoclastic activity. In 2007, the American Association of Oral and Maxillofacial Surgeons (AAOMS) defined diagnostic criteria for Osteonecrosis of the Jaws Associated with Bisphosponates (BRONJ). BRONJ is mainly diagnosed by clinical features, but the detection of early bone changes by imaging may help prevent and better understand the disease.

An unusual clinical manifestation of oral melanocytic nevus.

Melanocytic nevi are acquired or congenital benign neoplasms, often found in skin but rarely in the oral mucosa. This article reports an atypical case of oral hypopigmented melanocytic nevus in a 39-year-old woman referred for evaluation of a well-circumscribed papule with discrete brownish spots in the buccal mucosa. An excisional biopsy was performed, the results of which led to a clinical diagnosis of inflammatory fibrous hyperplasia.

Hereditary Gingival Fibromatosis: a Case Report with Seven-Year Follow-up.

Introduction: Hereditary gingival fibromatosis (HGF) is a rare disease characterized by gingival enlargement, normal color with benign and firm consistency. This growth may be exacerbated by use of drugs and plaque build-up. The treatment for this clinical condition is surgical excision of the enlarged gingival tissue or the extraction of all teeth.

Green Teeth Related to Bilirubin Levels.

Objective: To describe a form of tooth pigmentation caused by serum bilirubin deposition during dental calcification in a premature child. The bilirubin levels during the three months after birth are presented. In this period the crowns of the primary teeth are still forming.

Unusual findings on infantile cortical hyperostosis: A case report.

Background: Caffey's disease is a rare syndrome, usually self-limiting, affecting newborn and young infants. On radiological exams, the cortical hyperostosis is always present, associated or not to soft tissue swelling. Other radiographic presentations are described as lytic areas.

Oral health impact profile of head and neck cancer patients after or before oncologic treatment: an observational analytic case-control study.

Purpose: The objective of this study was to investigate the impact of oral health on the quality of life of patients with head and neck cancer (HNC) before and after oncologic treatment.

Methods: Forty cancer-free individuals (Cf group) and 40 HNC patients (Hnc group) were included in this study. Hnc group was also divided into two subgroups: Hnc 1 (pre-cancer therapy, n = 20) and Hnc 2 (post-cancer therapy, n = 20).

Salivary biomarkers as tools for oral squamous cell carcinoma diagnosis: A systematic review.

Background: The oral squamous cell carcinoma (OSCC) survival rate is influenced by the fact that diagnoses occur mostly in late stages of the disease. Thus, there is a clear contribution in the early findings, making the use of minimally invasive techniques for diagnosis, such as analysis of salivary markers, interesting tools.

Methods: A systematic review was performed with all studies that establish a comparison between the levels of saliva-based markers found in patients with OSCC compared with cancer-free individuals.

Viability of dental implants in head and neck irradiated patients: A systematic review.

Background: The purpose of this systematic review was to evaluate the safety of dental implants placed in irradiated bone and to discuss their viability when placed post-radiotherapy (RT).

Methods: A systematic review was performed to answer the questions: "Are dental implants in irradiated bone viable?" and "What are the main factors that influence the loss of implants in irradiated patients?"

Results: The search strategy resulted in 8 publications. A total of 331 patients received 1237 implants, with an overall failure rate of 9.

The effect of 6% Hydroxyethyl starch vs. Ringer's lactate on acute kidney injury after renal ischemia in rats.

Purpose: To compare fluid replacement therapy with Hydroxyethyl starch 6% (HES) versus Ringer's lactate (RL) in a rodent model of non-septic renal ischemia.

Methods: Forty male Wistar rats were randomized to receive HES 2 ml.kg(-1).

Central giant cell granuloma: treatment with calcitonin, triamcinolone acetonide, and a cystic finding 3 years and 6 months after the primary treatment.

Background: Central giant cell granuloma is a benign condition of the jaws which may present an aggressive behavior.

Case Report: A 9-year-old boy was complaining of swelling in the floor of the mouth. A solid swelling was observed in the area of the lower incisors.

Anesthetic strategy for cesarean section in a patient with factor XI deficiency. Case report.

Background And Objectives: Factor XI deficiency is a rare hematologic disorder. Hemophilia C (factor XI deficiency) affects both genders and it is usually asymptomatic, manifesting only as postoperative hemorrhage. It is an autosomal recessive, homozygous or heterozygous, disorder, and its severity depends on the levels of factor XI.

Intercostal nerve mononeuropathy: study of 14 cases.

This retrospective study describes 14 cases of intercostal nerve mononeuropathy (INM) found in 5,560 electromyography (EMG) exams performed between January 1991 and June 2004 in our University Hospital. Medical charts of all patients with history of thoracic pain and EMG diagnosis of intercostal mononeuropathy were reviewed. INM was detected in 14 patients; etiology was thoracic surgery in 6 (43%), post-herpetic neuropathy in 4 (28%), probable intercostal neuritis in 2 (14%), lung neoplasia in 1 (7%), and radiculopathy in 1 (7%).