A Systematic Review of Oral Modifications Caused by the Prolonged Application of Continuous Positive Airway Pressure (CPAP) and Intraoral Appliances in Patients with Obstructive Sleep Apnea (OSA).

Objective: Prolonged use of oral devices as a substitute for traditional treatments has been studied in relation to the dental and skeletal changes associated with obstructive sleep apnea syndrome (OSA), which is a sleep-breathing disorder.

Materials And Methods: A review of articles indexed in PubMed, Google Scholar, Cochrane Library, Scopus, Web of Sciences, and CINHAL databases in September 2022 based on MeSH-based keywords with "dental and skeletal" and "oral appliance" and "obstructive sleep apnea" was examined to ensure that the keywords alone or cross-linked, depending on which base of the searched data, were used. 16 articles out of 289 articles were included in the research, and 273 articles were excluded due to lack of study.

Iginio Tansini (1855-1943): An Italian surgeon and an innovator between the 19th and the 20th centuries.

The aim of this paper is to describe the figure of the Italian surgeon Iginio Tansini (1855-1943), who was full professor of surgery and director of the Department of Surgery at the University of Pavia (1903-1931). In that period, he modernized the School of Surgery founded by Antonio Scarpa (1752-1832) in the previous century; he introduced the experimental method in the discipline. One of his major contributions was an innovative technique of mastectomy followed by plastic reconstruction with myocutaneous flap.

Residual micro-stress distributions in heat-pressed ceramic on zirconia and porcelain-fused to metal systems: Analysis by FIB-DIC ring-core method and correlation with fracture toughness.

Objectives: The production of fixed partial dentures (FPDs) induces complex residual stress profiles, due to both the thermal expansion coefficient mismatch between the veneering ceramic and the framework and to the thermal gradients occurring during the final cooling. Detailed knowledge of residual stress distributions in the veneering ceramics is important to understand the interface phenomena with the framework and the consequences of the different firing systems. The first objective of this study was to analyse the residual stress distribution in heat-pressed ceramic on zirconia core with micrometer spatial resolution, with also a focus on the stress at the interface versus porcelain-fused-to-metal samples.

FIB/SEM and SEM/EDS microstructural analysis of metal-ceramic and zirconia-ceramic interfaces.

Recently introduced FIB/SEM analysis in microscopy seems to provide a high-resolution characterization of the samples by 3D (FIB) cross-sectioning and (SEM) high resolution imaging. The aim of this study was to apply the FIB/SEM and SEM/EDS analysis to the interfaces of a metal-ceramic vs. two zirconia-ceramic systems.

Commercial 3y-tzp and nanostructured zirconia for ceramic veneering: a sem study.

Short Communication selected from the Oral Presentations of the 56th Congress of the Groupèment International pour la Recherche Scientifique en Stomatologie et Odontologie, Peñafiel (Portugal) May 2012.

[Avascular jaw osteonecrosis associated with bisphophonate therapy].

The case of an IgAk myeloma showed the following common features with more than a hundred of patients described by the literature: osteonecrosis of the jaws, prolonged administration of bisphosphonates due to neoplastic skeletal lesions, antitumoral therapies and recent dental surgery. The antiangiogenetic effects of bisphosphonates can have an important pathogenetic role and a general dental treatment should be completed before the start of bisphosphonate administration.

Further study of restored and un-restored teeth subjected to high temperatures.

Forensic dentistry has been shown to be of fundamental importance in medico-legal investigations aimed at identifying human remains involving high temperature incidents because dental remains and prosthetic devices are resistant to quite high thermal change. In this project we studied teeth containing class I and V amalgam and composite fillings and compared them to un-restored teeth when exposed to high temperatures. Twenty five un-restored teeth, 25 teeth with class I amalgam restorations, 25 teeth with class V amalgam restorations and 25 teeth with class I composite fillings were placed in a furnace and heated at a rate of 30 degrees C/min.

Radiographic evaluation of teeth subjected to high temperatures: experimental study to aid identification processes.

The radiographic evaluation of dental remains represents a significant aspect in the forensic identification process, particularly after an exposure to fire. The aim of this "in vitro" study was to evaluate the radiographic features of unrestored, endodontically treated and restored teeth after exposure to an experimental range of high temperatures. Ninety human teeth were divided into two groups: (1) unrestored teeth, as a control group and (2) teeth endodontically treated (condensation technique) and restored with amalgam or composite fillings.

Observations on dental structures when placed in contact with acids: experimental studies to aid identification processes.

In a "mafia" crime case, a magistrate asked us whether it is possible to destroy a cadaver by immersing it in acids, and would it be possible to identify any residues. The aim of this study was to observe the behavior of teeth exposed to four kinds of acid solutions. The teeth were placed in plastic containers with 25 mL of acid and observed.

Observations on dental prostheses and restorations subjected to high temperatures: experimental studies to aid identification processes.

In large scale disasters associated with fire the damage caused by heat can make medico-legal identification of human remains difficult. Teeth, restorations and prostheses, all of which are resistant to even quite high temperatures can be used as aids in the identification process. In this project the behaviour and morphology of teeth and dental prostheses exposed to a range of high temperatures was studied.

[Elastomeric chains in orthodontics. An in vitro evaluation of ten different types].

Background: This study is an evaluation and a comparison assessment of ten different types of orthodontics elastomeric chains in an in vitro situation simulating the clinical therapy for the canine tooth distalisation.

Methods: We designed and produced two custom made systems in order to simulate the clinical movement and to measure the elastic recovery. The first device was suitable to activate the elastomeric chains up to 100% of its extension and successively to reduce this extension through the time, as it happens during the clinical practice.