Search results for "RESTOR"

Oral and dental health of non-institutionalized elderly people in Spain.

2011

With aging of the populations, the oral health and hygiene of elderly people has become an important public health issue. In this cross-sectional study we investigated the prevalence of tooth decay and other periodontal diseases in a representative cohort of 480 non-institutionalized adults ≥65 years from the province of Valencia, Spain. Using a World Health Organization standard for an adult oral survey methodology, we obtained data on remnant teeth with the decayed, missing and filled teeth (DMFT) index, a Community Periodontal Index of Treatment Needs (CPTIN), attachment loss, and temporo-mandibular articulation (TMA) status. The prevalence of these conditions were compared by age and ge…

Influence of non-clinical factors on restorative rectal cancer surgery: An analysis of four specialized population-based digestive cancer registries …

2022

Abstract Background This study aims to measure the association between deprivation, health care accessibility and health care system with the likelihood of receiving non-restorative rectal cancer surgery (NRRCS). Methods All adult patients who had rectal resection for invasive adenocarcinoma diagnosed between 2007 and 2016 in four French specialised cancer registries were included. A multilevel logistic regression with random effect was used to assess the link between patient and health care structure characteristics on the probability of NRRCS. Results 2997 patients underwent rectal cancer resection in 68 health care structures: 708 (23.63%) had NRRCS. The likelihood of receiving NRCCS was…

Differences in ano-neorectal physiology of ileoanal and coloanal reconstructions for restorative proctectomy

2010

Objective  Restorative proctectomy with straight coloanal anastomosis (CAA) and restorative proctocolectomy with ilealpouch-anal anastomosis (IPAA) are options for maintaining bowel integrity after rectal resection. The aim of this study was to compare clinical function and anorectal physiology in patients treated with CAA and IPAA. Method  Three-dimensional vector-manometry and neorectal volumetry were performed in straight CAA [53 patients (34 male)] and IPAA [61 patients (39 male)] for ulcerative colitis. Function was assessed using a 14 day incontinence diary. Results  Function was similar in both groups, but neorectal compliance and threshold volumes for sensation, urge and maximum tol…

FROM Δηομένη TO Madonna dell’Itria... AND VICEVERSA. TWO MARIAN ICONOGRAPHIES SUPERIMPOSED IN A “PALIMPSEST WALL” OF MARSALA (TP)

2019

During a recent restoration in an underground chapel in Marsala (TP), the wall to which the altar is attached proved to be a palimpsest of several layers. The oldest dated back from the late twelfth to early thirteenth century displaying a “velarium” in the lower register. Overhead we see a Madonna in prayer (Δηομένη) preceded by a theory of Saints. A second layer, from the 15th century, decisively changes the original iconography thus transforming it into the typically Sicilian iconography of the “Madonna dell’Itria”. The Child, positioned in the center of the Mother’s breast, sits inside a chest supported by two old chants. The latter devotional image, due to the perishability of the plas…

Could sonic delivery of bulk-fill resins improve the bond strength and cure depth in extended size class I cavities?

2020

Background The implementation of restorative procedures that guarantee success and optimize clinical time is the target of investigations in Restorative Dentistry. This study aimed to analyze the influence of sonic insertion of bulk-fill (BF) and conventional (C) resin composites on the microtensile bond-strength (µ-TBS) and cure depth (CD) of large and deep class I restorations. Material and Methods Fifty-six healthy human premolars were selected and occlusal cavities (4 x 4 x 3 mm; factor C = 5) were prepared. TC - Tetric N-Ceram (BF), SF - SonicFill (BF), and Z350 - Filtek Z350 XT (C) composite resins were used to restore the cavities, using sonic (S) and non-sonic (NS) insertion techniq…

Effect of cavity preparation instruments (oscillating or rotating) on the composite-dentin interface in primary teeth.

2003

Abstract Objectives: To evaluate the effect of preparation of instruments on the interfacial integrity between cavity wall and composite restoration. Methods: Two class II slot preparations were done in 10 primary teeth either with SonicSys® or with a conventional bur. The cavities were filled using an adhesive system. One layer of a flowable composite and one layer of a condensable composite were applied. The specimens were analyzed by confocal laser scanning microscopy. Results: In the SonicSys® group the mean thickness of the hybrid layer was 6.12 (0.60) μm; in the control group it was 6.04 (0.63) μm. The difference was not statistically significant. Two fractures were observed in one to…

Halloysite nanotubes/pluronic nanocomposites for waterlogged archeological wood: thermal stability and X-ray microtomography

2020

Filling a polymer with halloysite nanotubes is considered a promising strategy to generate nanocomposites with tailored physicochemical properties. We have focused our attention on pluronic block copolymer/halloysite nanocomposites prepared by melt blending. The effect of composition on thermal stability and polymer crystallinity was investigated by thermogravimetry and differential scanning calorimetry. Electron microscopy was used to monitor the nanoparticle distribution in the polymeric matrix. The pluronic thermal stability is reduced by the clay nanoparticles. Concerning the polymer crystallinity, it is slightly decreased even if the melting temperature is lowered by halloysite. Furthe…

POSITIONING SELF-ETCHING ADHESIVES: VERSUS OR IN ADDITION TO PHOSPHORIC ACID ETCHING?

2004

A critical approach to the toxic metal ion removal by hazelnut and almond shells

2018

The adsorption capacity of ground hazelnut (HS) and almond (AS) shells towards Pb(II) and Cd(II) has been studied at pH = 5, in NaNO3 and NaCl ionic media, in the ionic strength range 0.05-0.5 mol L-1. Kinetic and equilibrium experiments were carried out by using the Differential Pulse Anodic Stripping Voltammetry technique to check the amount of the metal ion removed by HS and AS materials. Different kinetic and equilibrium equations were used to fit experimental data and a statistical study was done to establish the suitable model for the data fitting. A speciation study of the metal ions in solution was also done in order to evaluate the influence of the ionic medium on the adsorption pr…

Inclusion of the periodontal ligament in studies on the biomechanical behavior of fiber post-retained restorations: An in vitro study and three-dimen…

2016

Endodontically treated teeth are known to have reduced structural strength. Periodontal ligament may influence fracture resistance. The purpose of this study was to assess the influence of including the periodontal ligament in biomechanical studies about endodontically treated and restored teeth. Forty human maxillary central incisors were treated endodontically and randomly divided into four groups: non-crowned (with and without an artificial ligament) and crowned (with and without an artificial ligament) with glass-ceramic crowns. All groups received prefabricated glass-fiber posts and a composite resin core. Specimens were tested, under a flexural–compressive load, until failure occurre…