Restorative Materials in the Digital Workflow: Innovative Trends to Join Esthetics and Biomechanics

A special issue of Dentistry Journal (ISSN 2304-6767). This special issue belongs to the section "Dental Materials".

Deadline for manuscript submissions: closed (31 December 2019) | Viewed by 53825

Special Issue Editors


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Guest Editor
Department of Neurosciences, Reproductive and Odontostomatological Sciences, University “Federico II” of Naples, 80131 Naples, Italy
Interests: prosthodontics; adhesive dentistry; dental materials
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Naples, Italy
Interests: oral medicine; dental materials; operative dentistry; oral health
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the last decade, the development of innovative technologies has moved in parallel with a rapid evolution of restorative materials on the rails of digital dentistry, opening new horizons in the field of prosthodontics. In daily practice, the most advanced technologies, such as CAD-CAM, laser-sintering/melting and 3D-printing, have been synergistically implemented with enhanced mechanical and manufacturing properties of the new generation of dental materials: high strength ceramics, hybrid composites, technopolymers, and high precision alloys. Among these, CAD-CAM metal-free ceramics, just like high strength polycrystalline ceramics, such as zirconia, and reinforced glassy ceramics, such as lithium disilicate, offer undeniable advantages, for example, high esthetic potential, astounding optical characteristics, reliable mechanical properties, excellent consistency in terms of precision and accuracy due to the manufacturing technologies, and more convenient production timing. These improvements have dramatically widened the restorative choices in tooth- and implant-supported prosthodontics.

The editorial board of the dentistry journal would encourage high quality original research studies, clinical articles, and reviews focused on the topic of restorative materials in the digital workflow.

Prof. Dr. Roberto Sorrentino
Prof. Dr. Gianrico Spagnuolo
Guest Editors

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Keywords

Potential topics include, but are not limited to:

  • All-ceramic and metal-free materials
  • Additive and subtractive manufacturing techniques (cad/cam, 3d printing, laser sintering, laser melting, stereolithography, digital light projection, jetting, etc.)
  • Digital previsualization and mock-up technologies
  • Digital facebow and articulators
  • Intraoral, laboratory, and face scanners
  • Cad/cam software in digital dentistry
  • Digital prosthodontics, surgery, and orthodontics
  • The “full digital patient”

Published Papers (7 papers)

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Research

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12 pages, 1384 KiB  
Article
Intra- and Interobserver Reliability of Bone Volume Estimation Using OsiriX Software in Patients with Cleft Lip and Palate Using Cone Beam Computed Tomography
by Anuraj Singh Kochhar, Maninder Singh Sidhu, Mona Prabhakar, Ritasha Bhasin, Gulsheen Kaur Kochhar, Himanshu Dadlani, Gianrico Spagnuolo and Viral Vijay Mehta
Dent. J. 2021, 9(2), 14; https://doi.org/10.3390/dj9020014 - 22 Jan 2021
Cited by 15 | Viewed by 2888
Abstract
The objective of the current study was to evaluate intra- and interobserver bone volume measurements and effect of orientation on the reliability of bone volume evaluation in as-acquired vis-à-vis oriented cone beam computed tomography scans using Osirix software and possible correlation between gender, [...] Read more.
The objective of the current study was to evaluate intra- and interobserver bone volume measurements and effect of orientation on the reliability of bone volume evaluation in as-acquired vis-à-vis oriented cone beam computed tomography scans using Osirix software and possible correlation between gender, age, and bone volume required. For this, 31 cone beam computed tomography (CBCT) scans of 14 girls and 17 boys (aged 9–13) with unilateral cleft lip and/or palate who met the inclusion criteria were analyzed. Efficacy and reliability of third party software Osirix for bone volume calculation was assessed using as acquired and oriented volumes by three specialists (a radiologist, an orthodontist, and an oral maxillofacial surgeon). The dataset and readings were anonymized to prevent any bias. Two-way mixed model analysis on as-acquired and oriented observations exhibited intra-class coefficient (ICC) values ≥ 0.90. Wilcoxon signed rank test (p = 0.10) and Kruskal–Wallis ANOVA (p = 0.46) indicated that although a clinical difference in volume assessment was seen between as-acquired and oriented observations (inter-observer and intra-observer), it was statistically insignificant. Spearman’s bi-variate correlation analysis revealed a significant relation between the type (side) of cleft and bone volume required to fill the defect (p < 0.05). Although there was clinical difference in bone volume measurement by the three observers, it was insignificant statistically. Clefts on the left side in the patients had significantly more bone required than the right side, whereas age and gender had no relation with bone needed to fill the defect. OsiriX software provided good reliability in measurements of bone volume. Full article
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10 pages, 4236 KiB  
Article
Distribution of the Condylion-Gonion-Menton (CoGoMe^) Angle in a Population of Patients from Southern Italy
by Vincenzo D’Antò, Ada Carolina Pango Madariaga, Roberto Rongo, Rosaria Bucci, Vittorio Simeon, Lorenzo Franchi and Rosa Valletta
Dent. J. 2019, 7(4), 104; https://doi.org/10.3390/dj7040104 - 03 Nov 2019
Cited by 5 | Viewed by 4125
Abstract
The condylion-gonion-menton angle (CoGoMe^) is commonly used as a pre-treatment indicator of responsiveness in Class II patients treated with functional appliances. The distribution of this angle in the Caucasian population is still unknown. This study aimed to determine the distribution of the CoGoMe^ [...] Read more.
The condylion-gonion-menton angle (CoGoMe^) is commonly used as a pre-treatment indicator of responsiveness in Class II patients treated with functional appliances. The distribution of this angle in the Caucasian population is still unknown. This study aimed to determine the distribution of the CoGoMe^ and its relationship with age, sagittal jaw relationship (ANPg^), and mandibular inclination (SN^GoGn) in patients from Southern Italy. The sample included 290 subjects (median14 years of age; Interquartile range, IQR, 12–17) with lateral cephalograms taken before the orthodontic treatment. The distribution of the CoGoMe^ was assessed with the Shapiro–Wilk test, and the differences according to the ANPg^ and the SN^GoGn were estimated using one-way ANOVA. Linear regression analysis was performed to evaluate how the CoGoMe^ varied according to age. The statistical significance was set at P < 0.05. The results showed that the CoGoMe^ was normally distributed (P = 0.290) with a mean value of 127.2° ± 7.7°. The distribution of the CoGoMe^ in groups with different SN^GoGn angles was significantly different (P < 0.001). These angles showed a positive association (Beta coefficient B = 0.6; 95% CI: 0.51, 0.67; P < 0.001). In growing patients, the CoGoMe^ decreased every year by 0.6° (B = −0.6; 95% CI: −1.05, −0.12; P = 0.014). In conclusion, the CoGoMe^ was associated with mandibular inclination and could be considered to be a predictor of vertical growth patterns. Full article
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8 pages, 5490 KiB  
Article
Effect of Surface Treatments on Shear Bond Strength of Polyetheretherketone to Autopolymerizing Resin
by Kosuke Kurahashi, Takashi Matsuda, Yuichi Ishida and Tetsuo Ichikawa
Dent. J. 2019, 7(3), 82; https://doi.org/10.3390/dj7030082 - 01 Aug 2019
Cited by 27 | Viewed by 3779
Abstract
These days, new prosthodontic materials are appearing with the development of digitalization. Among these, the use of polyetheretherketone (PEEK) as the clasp of removable partial dentures has been proposed. The adhesive strength between the PEEK and acrylic resin influences the probability of denture [...] Read more.
These days, new prosthodontic materials are appearing with the development of digitalization. Among these, the use of polyetheretherketone (PEEK) as the clasp of removable partial dentures has been proposed. The adhesive strength between the PEEK and acrylic resin influences the probability of denture fracture. To investigate the effect of PEEK surface treatments on the shear bond strength to acrylic resin, five surface treatment conditions of PEEK were analyzed: 1. no treatment; 2. ceramic primer application; 3. Al2O3 sandblasting; 4. Rocatec; and 5. Rocatec with ceramic primer application, comparing with a metal primer-treated Co-Cr alloy. Two kinds of autopolymerizing resin (Unifast II and Palapress Vario) were used as bonding materials. The specimens were evaluated to determine the bond strength. Rocatec treatment with ceramic primer application yielded the highest bond strengths (12.71 MPa and 15.32 MPa, respectively, for Unifast II and Palapress Vario). When compared to a metal primer-treated Co-Cr alloy, the bond strength of PEEK to Unifast II was similar, whereas it was about 60% of that to Palapress Vario. Rocatec treatment, combined with ceramic primer, showed the highest bond strength of PEEK to acrylic resin. Treatment of PEEK will enable its use as the clasp of removable dentures and the fixation of PEEK prostheses. Full article
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7 pages, 1282 KiB  
Article
Three-Dimensional Assessment of Morphological Changes Following Nasoalveolar Molding Therapy in Cleft Lip and Palate Patients: A Case Report
by Edoardo Staderini, Romeo Patini, Andrea Camodeca, Federica Guglielmi and Patrizia Gallenzi
Dent. J. 2019, 7(1), 27; https://doi.org/10.3390/dj7010027 - 07 Mar 2019
Cited by 18 | Viewed by 4190
Abstract
The applications of computer-guided technologies for three-dimensional image analysis provide a unique opportunity to quantify the morphological dimensional changes of the face in a practical and convenient way. Symmetry of the nasolabial area is one of the main factors of facial attractiveness as [...] Read more.
The applications of computer-guided technologies for three-dimensional image analysis provide a unique opportunity to quantify the morphological dimensional changes of the face in a practical and convenient way. Symmetry of the nasolabial area is one of the main factors of facial attractiveness as well as being the main objective of the treatment of cleft lip and palate (CLP). Technological advances in computer-guided visualization modes and their applications to three-dimensional stereophotogrammetry provide more practical opportunities and alternatives for facial analysis. Each study, however, uses different protocols for the acquisition and analysis of three-dimensional images. In addition, each study identifies different anthropometric points and calculates linear and angular measurements with overlapping protocols. Therefore, it is appropriate to define a standardization of the three-dimensional analysis of CLP patients to compare the studies of different research centers. The aim of this report is to propose a protocol to standardize the acquisition and analysis of three-dimensional images to evaluate the three-dimensional changes in the nasolabial area in cleft lip and palate patients undergoing pre-surgical nasoalveolar molding (PNAM). Full article
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Review

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23 pages, 1173 KiB  
Review
Monolithic Zirconia: An Update to Current Knowledge. Optical Properties, Wear, and Clinical Performance
by Eleana Kontonasaki, Athanasios E. Rigos, Charithea Ilia and Thomas Istantsos
Dent. J. 2019, 7(3), 90; https://doi.org/10.3390/dj7030090 - 02 Sep 2019
Cited by 83 | Viewed by 10903
Abstract
The purpose of this paper was to update the knowledge concerning the wear, translucency, as well as clinical performance of monolithic zirconia ceramics, aiming at highlighting their advantages and weaknesses through data presented in recent literature. New ultra-translucent and multicolor monolithic zirconia ceramics [...] Read more.
The purpose of this paper was to update the knowledge concerning the wear, translucency, as well as clinical performance of monolithic zirconia ceramics, aiming at highlighting their advantages and weaknesses through data presented in recent literature. New ultra-translucent and multicolor monolithic zirconia ceramics present considerably improved aesthetics and translucency, which, according to the literature reviewed, is similar to those of the more translucent lithium disilicate ceramics. A profound advantage is their high strength at thin geometries preserving their mechanical integrity. Based on the reviewed articles, monolithic zirconia ceramics cause minimal wear of antagonists, especially if appropriately polished, although no evidence still exists regarding the ultra-translucent compositions. Concerning the survival of monolithic zirconia restorations, the present review demonstrates the findings of the existing short-term studies, which reveal promising results after evaluating their performance for up to 5 or 7 years. Although a significant increase in translucency has been achieved, new translucent monolithic zirconia ceramics have to be further evaluated both in vitro and in vivo for their long-term potential to preserve their outstanding properties. Due to limited studies evaluating the wear properties of ultra-translucent material, no sound conclusions can be made, whereas well-designed clinical studies are urgently needed to enlighten issues of prognosis and long-term survival. Full article
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12 pages, 444 KiB  
Review
Dental Restorative Digital Workflow: Digital Smile Design from Aesthetic to Function
by Gabriele Cervino, Luca Fiorillo, Alina Vladimirovna Arzukanyan, Gianrico Spagnuolo and Marco Cicciù
Dent. J. 2019, 7(2), 30; https://doi.org/10.3390/dj7020030 - 28 Mar 2019
Cited by 91 | Viewed by 13951
Abstract
Breakthroughs in technology have not been possible without influencing the medical sciences. Dentistry and dental materials have been fully involved in the technological and information technology evolution, so much so that they have revolutionized dental techniques. In this study, we want to create [...] Read more.
Breakthroughs in technology have not been possible without influencing the medical sciences. Dentistry and dental materials have been fully involved in the technological and information technology evolution, so much so that they have revolutionized dental techniques. In this study, we want to create the first collection of articles on the use of digital techniques and software, such as Digital Smile Design. The aim is to collect all of the results regarding the use of this software, and to highlight the fields of use. Twenty-four articles have been included in the review, and the latter describes the use of Digital Smile Design and, in particular, the field of use. The study intends to be present which dental fields use “digitization”. Progress in this field is constant, and will be of increasing interest to dentistry by proposing a speed of treatment planning and a reliability of results. The digital workflow allows for rehabilitations that are reliable both from an aesthetic and functional point of view, as demonstrated in the review. From this study, the current field of use of Digital Smile Design techniques in the various branches of medicine and dentistry have emerged, as well as information about its reliability. Full article
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Other

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6 pages, 2186 KiB  
Case Report
Use of a Polyetheretherketone Clasp Retainer for Removable Partial Denture: A Case Report
by Tetsuo Ichikawa, Kosuke Kurahashi, Lipei Liu, Takashi Matsuda and Yuichi Ishida
Dent. J. 2019, 7(1), 4; https://doi.org/10.3390/dj7010004 - 03 Jan 2019
Cited by 25 | Viewed by 12823
Abstract
Clasp retainers made of metal alloys may be esthetically unappealing or cause allergic reactions. To investigate alternative materials, we used the nonfiller polyetheretherketone (PEEK) to fabricate the clasp retainer of a removable partial denture for the mandibular bilateral distal free-end abutment of an [...] Read more.
Clasp retainers made of metal alloys may be esthetically unappealing or cause allergic reactions. To investigate alternative materials, we used the nonfiller polyetheretherketone (PEEK) to fabricate the clasp retainer of a removable partial denture for the mandibular bilateral distal free-end abutment of an 84-year-old female. Two years later, few color and texture changes of PEEK were found macroscopically. The rest part and the clasp arm fitted well without any deformation. There were no particular occlusal or periodontal problems. Subjective satisfaction was expressed by both the practitioner and the patient. Full article
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