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The New Elderly Patient: A Necessary Upgrade

by Santo Catapano, Luca Ortensi, Nicola Mobilio and Francesco Grande

Prosthesis 2021, 3(1), 99-104; https://doi.org/10.3390/prosthesis3010010 - 15 Mar 2021

Cited by 7 | Viewed by 3780

The elderly individual is becoming the most common patient in clinical practice due to the increasing average life span, especially in developed countries. The current elderly patients are different from those of some decades ago. They usually have an active social life, want to be informed, and are actively involved in the current society with consequent high expectations for medical and dental treatment. However, not all the elderly patients are like this. Some of them show limited financial resources, reduced mental and manual skills, and poor motivation. The purpose of this communication is to make a brief characterization of the new elderly population in view of prosthetic and dental management. Full article

(This article belongs to the Special Issue The Elderly Patient: New Perspectives and Therapeutic Options in Clinical Dentistry)

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7 pages, 1107 KiB

Open AccessArticle

Complete-Arch Accuracy of Four Intraoral Scanners: An In Vitro Study

by Giordano Celeghin, Giulio Franceschetti, Nicola Mobilio, Alberto Fasiol, Santo Catapano, Massimo Corsalini and Francesco Grande

Healthcare 2021, 9(3), 246; https://doi.org/10.3390/healthcare9030246 - 1 Mar 2021

Cited by 17 | Viewed by 3181

Abstract

The purpose of this study is to define the accuracy of four intraoral scanners (IOS) through the analysis of digital impressions of a complete dental arch model. Eight metal inserts were placed on the model as reference points and then it was scanned with a laboratory scanner in order to obtain the reference model. Subsequently, the reference model was scanned with four IOS (Carestream 3600, CEREC Omnicam, True Definition Scanner, Trios 3Shape). Linear measurements were traced on an STL file between the chosen reference points and divided into four categories: three-element mesiodistal, five-element mesiodistal, diagonal, and contralateral measurements. The digital reference values for the measurements were then compared with the values obtained from the scans to analyze the accuracy of the IOS using ANOVA. There were no statistically significant differences between the measurements of the digital scans obtained with the four IOS systems for any of the measurement groups tested. Full article

(This article belongs to the Collection Healthcare in Dentistry)

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7 pages, 942 KiB

Open AccessArticle

Comparative Analysis of the Stability of Prosthetic Screws under Cyclic Loading in Implant Prosthodontics: An In Vitro Study

by Santo Catapano, Mattia Ferrari, Nicola Mobilio, Marco Montanari, Massimo Corsalini and Francesco Grande

Appl. Sci. 2021, 11(2), 622; https://doi.org/10.3390/app11020622 - 11 Jan 2021

Cited by 21 | Viewed by 3928

Abstract

Background: To compare the loss of preload in absence of loading and after a fixed number of cyclic loadings on 7-mm distal cantilever in two different connection systems using all-on-four prosthetic model. Methods: Two equal models of an edentulous mandible rehabilitated with all-on-four technique with two types of abutment system (MUA and OT-Bridge) supporting a hybrid prosthesis, were used. Initial torque values of the prosthetic fixing screw, after ten minutes from initial screw tightening and after 400,000 repeated loadings were registered using a mechanical torque gauge. Differences between initial and final torque values were reported for each anchoring system and the two systems were finally compared. Results: No statistically significant differences regarding the loss of preload between MUA and OT-Bridge system were found after 400,000 cyclic loadings; however, in MUA system it was found between anterior and posterior implant screws. A significant difference in preload loss was found only for MUA system comparing the initial screw torque to that measured after 10 min from the tightening in absence of cyclic loadings. Conclusions: Within the limits of the present study, MUA and OT-Bridge may be considered reliable prosthetic anchoring systems able to tolerate repeated cyclic occlusal loads on distal cantilever in all-on-four rehabilitation model without any significant loss of preload in screw tightening. Full article

(This article belongs to the Special Issue Biomaterials, Nanomaterials and Microbiota Biofilm Control in Dentistry)

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9 pages, 2458 KiB

Open AccessArticle

In Vitro Fracture Strength of Teeth Restored with Lithium Disilicate Onlays with and without Fiber Post Build-Up

by Nicola Mobilio, Alberto Fasiol, Francesco Mollica and Santo Catapano

Dent. J. 2018, 6(3), 35; https://doi.org/10.3390/dj6030035 - 23 Jul 2018

Cited by 2 | Viewed by 6770

Abstract

To our knowledge there is no data about the mechanical performance of indirect restoration adhesively cemented on teeth without an adequate build-up to provide the correct geometrical configuration. The aim of this study was to compare the fracture strength of human teeth restored with lithium disilicate onlays, with and without fiber post build-up. Methods: Twenty human mandibular molars were horizontally sectioned and divided into two groups (n = 10). No treatment was applied in group A. Teeth in group B were endodontically treated, built-up using fiber post and composite core and prepared with a circumferential chamfer providing a 1 mm circumferential ferrule. Lithium disilicate onlays were pressed and luted on teeth using dual-curing luting composite. Teeth were tested under static load. Failures were classified as restorable or not restorable. Failure loads were analyzed with one-way analysis of variance. Failure modes were compared using Pearson’s Chi-square tests. Results: The mean fracture loads were 1383.5 N for group A and 1286.3 N for group B. No difference was found (p = 0.6). Ninety per cent of fractures were classified as not restorable in both groups, with no difference (p = 0.8). Conclusions: For teeth restored with adhesive procedures and lithium disilicate onlays, the presence of build-up with fiber post to provide retention and resistance form does not influence the fracture strength. Full article

(This article belongs to the Section Restorative Dentistry and Traumatology)

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6 pages, 3893 KiB

Open AccessArticle

Marginal Vertical Fit along the Implant-Abutment Interface: A Microscope Qualitative Analysis

by Nicola Mobilio, Alberto Fasiol, Giulio Franceschetti and Santo Catapano

Dent. J. 2016, 4(3), 31; https://doi.org/10.3390/dj4030031 - 6 Sep 2016

Cited by 8 | Viewed by 5184

Abstract

The aim of this study was to qualitatively evaluate the marginal vertical fit along two different implant-abutment interfaces: (1) a standard abutment on an implant and (2) a computer-aided-design/computer-aided-machine (CAD/CAM) customized screw-retained crown on an implant. Four groups were compared: three customized screw-retained crowns with three different “tolerance” values (CAD-CAM 0, CAD-CAM +1, CAD-CAM −1) and a standard titanium abutment. Qualitative analysis was carried out using an optical microscope. Results showed a vertical gap significantly different from both CAD-CAM 0 and CAD-CAM −1, while no difference was found between standard abutment and CAD-CAM +1. The set tolerance in producing CAD/CAM screw-retained crowns plays a key role in the final fit. Full article

(This article belongs to the Special Issue Advances in Implant Dentistry)

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8 pages, 1412 KiB

Open AccessArticle

Effect of Different Luting Agents on the Retention of Lithium Disilicate Ceramic Crowns

by Nicola Mobilio, Alberto Fasiol, Francesco Mollica and Santo Catapano

Materials 2015, 8(4), 1604-1611; https://doi.org/10.3390/ma8041604 - 7 Apr 2015

Cited by 16 | Viewed by 7130

Abstract

No studies are available that evaluate the retention of disilicate crowns according to different cementation procedures. The purpose of this study was to measure the retention of lithium disilicate crowns cemented using two different cementation systems. Twenty extracted mandibular premolars were prepared. Anatomic crowns were waxed and hot pressed using lithium disilicate ceramic. Teeth were divided into two groups (n = 10): (1) self-curing luting composite and (2) glass-ionomer cement (GIC). After cementation, the crowns were embedded in acrylic resin block with a screw base. Each specimen was pulled along the path of insertion in Universal Testing Machine. Failure load in Newtons (N) and failure mode were recorded for each specimen. Failure mode was classified as decementation or fracture. Failure load data were analyzed using one-way analysis of variance (ANOVA). Failure modes were compared using Pearson’s Chi-square test. Mean failure load was 306.6(±193.8) N for composite group and 94.7(±48.2) N for GIC group (p = 0.004). Disilicate crown cemented with luting composite most often failed by fracture; otherwise, crown cemented with glass-ionomer cement most often failed by decementation (p = 0.02). Disilicate full crown cemented with luting composite showed higher failure load compared with conventional cementation with glass-ionomer cement. Full article

(This article belongs to the Special Issue Dental Materials)

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