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Bracci A, Lobbezoo F, Colonna A, Bender S, Conti PCR, Emodi-Perlman A, Häggman-Henrikson B, Klasser GD, Michelotti A, Lavigne GJ, Svensson P, Ahlberg J, Manfredini D. Research routes on awake bruxism metrics: Implications of the updated bruxism definition and evaluation strategies. J Oral Rehabil 2024; 51:150-161. [PMID: 37191494 DOI: 10.1111/joor.13514] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 05/10/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND With time, due to the poor knowledge on it epidemiology, the need to focus on awake bruxism as a complement of sleep studies emerged. OBJECTIVE In line with a similar recent proposal for sleep bruxism (SB), defining clinically oriented research routes to implement knowledge on awake bruxism (AB) metrics is important for an enhanced comprehension of the full bruxism spectrum, that is better assessment and more efficient management. METHODS We summarised current strategies for AB assessment and proposed a research route for improving its metrics. RESULTS Most of the literature focuses on bruxism in general or SB in particular, whilst knowledge on AB is generally fragmental. Assessment can be based on non-instrumental or instrumental approaches. The former include self-report (questionnaires, oral history) and clinical examination, whilst the latter include electromyography (EMG) of jaw muscles during wakefulness as well as the technology-enhanced ecological momentary assesment (EMA). Phenotyping of different AB activities should be the target of a research task force. In the absence of available data on the frequency and intensity of wake-time bruxism-type masticatory muscle activity, any speculation about the identification of thresholds and criteria to identify bruxers is premature. Research routes in the field must focus on the improvement of data reliability and validity. CONCLUSIONS Probing deeper into the study of AB metrics is a fundamental step to assist clinicians in preventing and managing the putative consequences at the individual level. The present manuscript proposes some possible research routes to advance current knowledge. At different levels, instrumentally based and subject-based information must be gathered in a universally accepted standardised approach.
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Affiliation(s)
- Alessandro Bracci
- Department of Neuroscience, School of Dentistry, University of Padova, Padova, Italy
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Anna Colonna
- Department of Biomedical Technologies, School of Dentistry, University of Siena, Siena, Italy
| | - Steven Bender
- Department of Oral and Maxillofacial Surgery, Texas A&M School of Dentistry, Dallas, Texas, USA
| | - Paulo C R Conti
- Bauru School of Dentistry, University of Sao Paulo, São Paulo, Brazil
| | - Alona Emodi-Perlman
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Telaviv, Israel
| | | | - Gary D Klasser
- Department of Diagnostic Sciences, Louisiana State University School of Dentistry, New Orleans, Louisiana, USA
| | - Ambra Michelotti
- Department of Neurosciences, Reproductive Sciences and Oral Sciences, Section of Orthodontics and Temporomandibular Disorders, University of Naples Federico II, Naples, Italy
| | - Gilles J Lavigne
- Center for Advanced Research in Sleep Medicine, Research Centre, Hôpital du Sacré-Coeur de Montréal, and Universite de Montreal, Montreal, Quebec, Canada
| | - Peter Svensson
- Section for Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Jari Ahlberg
- Department of Oral and Maxillofacial, Diseases, University of Helsinki, Helsinki, Finland
| | - Daniele Manfredini
- Department of Biomedical Technologies, School of Dentistry, University of Siena, Siena, Italy
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Recent Clinical Treatment and Basic Research on the Alveolar Bone. Biomedicines 2023; 11:biomedicines11030843. [PMID: 36979821 PMCID: PMC10044990 DOI: 10.3390/biomedicines11030843] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
The periodontal ligament is located between the bone (alveolar bone) and the cementum of the tooth, and it is connected by tough fibers called Sharpey’s fibers. To maintain healthy teeth, the foundation supporting the teeth must be healthy. Periodontal diseases, also known as tooth loss, cause the alveolar bone to dissolve. The alveolar bone, similar to the bones in other body parts, is repeatedly resorbed by osteoclasts and renewed by osteogenic cells. This means that an old bone is constantly being resorbed and replaced by a new bone. In periodontal diseases, the alveolar bone around the teeth is absorbed, and as the disease progresses, the alveolar bone shrinks gradually. In most cases, the resorbed alveolar bone does not return to its original form even after periodontal disease is cured. Gum covers the tooth surface so that it matches the shape of the resorbed alveolar bone, exposing more of the tooth surface than before, making the teeth look longer, leaving gaps between the teeth, and in some cases causing teeth to sting. Previously, the only treatment for periodontal diseases was to stop the disease from progressing further before the teeth fell out, and restoration to the original condition was almost impossible. However, a treatment method that can help in the regeneration of the supporting tissues of the teeth destroyed by periodontal diseases and the restoration of the teeth to their original healthy state as much as possible is introduced. Recently, with improvements in implant material properties, implant therapy has become an indispensable treatment method in dentistry and an important prosthetic option. Treatment methods and techniques, which are mainly based on experience, have gradually accumulated scientific evidence, and the number of indications for treatment has increased. The development of bone augmentation methods has contributed remarkably to the expansion of indications, and this has been made possible by various advances in materials science. The induced pluripotent stem cell (iPS) cell technology for regenerating periodontal tissues, including alveolar bone, is expected to be applied in the treatment of diseases, such as tooth loss and periodontitis. This review focuses on the alveolar bone and describes clinical practice, techniques, and the latest basic research.
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A Systematic Study of Restorative Crown-Materials Combinations for Dental Implants: Characterization of Mechanical Properties under Dynamic Loads. Int J Mol Sci 2022; 23:ijms23158769. [PMID: 35955903 PMCID: PMC9369216 DOI: 10.3390/ijms23158769] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to find the optimum mechanical characteristics of the restorative materials for the manufacture of implant crowns subjected to impact loading when different combinations of materials are used for the inner and outer crown. Several combinations of external–internal crown restorative materials were analyzed. The dynamic stresses at eight different zones of a dental implant subjected to an impact load and the influence of several mechanical properties, such as the Young’s modulus, Poisson’s ratio, density, and initial velocity, were analyzed and compared. A detailed 3D model was created, including the crown, the retention screw, the implant, and a mandible section. The model was then built by importing the 3D geometries from CAD software. The whole 3D model was carefully created in order to guarantee a finite element mesh that produced results adjusted to physical reality. Then, we conducted a numerical simulation using the finite element method (FEM). The results of the FEM analysis allowed for evaluating the effect that different combinations of restorative materials and mechanical properties had on the stress distribution in various regions of the implant. The choice of restorative material is a factor to be considered in order to preserve the integrity of osseointegration. Restorative materials transfer more or less stress to the dental implant and surrounding bone, depending on their stiffness. Therefore, an inadequate Young’s modulus of the rehabilitation material can affect the survival of the implant over time. Eight interactive graphics were provided on a web-based surface platform to help clinical dentists, researchers, and manufacturers to select the best restorative materials combination for the crown.
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Shi Y, Bergs C, Abdelbary MM, Pich A, Conrads G. Isoeugenol-functionalized nanogels inhibit peri-implantitis associated bacteria in vitro. Anaerobe 2022; 75:102552. [DOI: 10.1016/j.anaerobe.2022.102552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 11/01/2022]
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Bittencourt TC, Souza Picorelli Assis NM, Ribeiro CG, Ferreira CF, Sotto-Maior BS. Evaluation of the peri-implant tissues in the esthetic zone with prefabricated titanium or zirconia abutments: A randomized controlled clinical trial with a minimum follow-up of 7 years. J Prosthet Dent 2021; 129:573-581. [PMID: 34334178 DOI: 10.1016/j.prosdent.2021.06.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 10/20/2022]
Abstract
STATEMENT OF PROBLEM Long-term clinical studies are lacking on the influence of the type of abutment, titanium or zirconia, on peri-implant tissues. PURPOSE The purpose of this randomized clinical trial was to evaluate peri-implant tissues with titanium or zirconia abutments. MATERIAL AND METHODS A total of 26 single-tooth implant-supported prostheses in 14 participants were analyzed. They received either a titanium abutment with a metal-ceramic crown (TAG) or a zirconia abutment with a ceramic crown (ZAG). Data were collected immediately, at 5 months, and at a minimum of 7 years after crown delivery. The success rate, plaque and bleeding indexes, bleeding on probing, white and pink esthetic scores, and the relationships of the gingival phenotype with the pink esthetic score were analyzed. Statistical analyses were conducted with the t test for paired and independent data (α=.05). RESULTS The mean follow-up time was 95.2 ±2.6 months, showing an implant success rate of 96.7%. No statistically significant differences were found between TAG and ZAG among the time intervals evaluated for plaque or bleeding indexes (P>.05). A statistically significant difference was found for peri-implant probing depths in the mid-buccal sites between the groups at all the time intervals evaluated (TAG, P=.008; ZAG, P=.021): TAG showed an increase between 5 months (3.65 ±0.93 mm) and over 7 years (4.47 ±1.32 mm); and ZAG showed a reduction (5 months=5.22 ±1.71 mm; over 7 years=4.25 ±1.28 mm) in values. For the pink (PES) and white esthetic score (WES), ZAG (PES: immediately=6.33 ±1.41; 5 months=7.44 ±1.81; over 7 years=8.25 ±1.03; WES: immediately=7.67 ±1.50; over 7 years=8.38 ±0.74) showed higher mean values than TAG (PES: immediately=5.94 ±2.35; 5 months=6.53 ±2.15; over 7 years=7.44 ±1.81; WES: immediately=7.00 ±1.17; over 7 years=8.35 ±1.27) (P<.05). Statistically significant differences were found for gingival phenotype and for PES in TAG (P=.031), and the participants with thick phenotype showed higher PES in the 3 time intervals studied. CONCLUSIONS Zirconia abutments exhibited better results than titanium abutments in terms of the peri-implant tissues. Moreover, in those with a thin phenotype, zirconia provided improved gingival esthetics.
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Affiliation(s)
- Thais Camargo Bittencourt
- Master in Comprehensive Dentistry, Department of Prosthodontics, Federal University of Juiz de For a (UFJF) College of Dentistry, Juiz de Fora, Minas Gerais, Brazil.
| | - Neuza Maria Souza Picorelli Assis
- Associate Professor, the Department of Comprehensive Dentistry at the Federal University of Juiz de For a (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - Cleide Gisele Ribeiro
- Professor, Maternidade Therezinha de Jesus (HMTJ/JF) and Faculdade de Ciências Médicas e da Saúde Juiz de For a (SUPREMA), Minas Gerais, Brazil
| | - Cimara Fortes Ferreira
- Associate Professor, Director of Implant Dentistry, Department of Periodontics, University of Tennessee (UT) College of Dentistry, Memphis, Tenn
| | - Bruno Salles Sotto-Maior
- Professor, Federal University of Juiz de Fora (UFJF), College of Dentistry, Departament of Restorative Dentistry, Juiz de Fora, Minas Gerais, Brazil
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Cantó-Navés O, Medina-Galvez R, Marimon X, Ferrer M, Figueras-Álvarez Ó, Cabratosa-Termes J. A 3D Finite Element Analysis Model of Single Implant-Supported Prosthesis under Dynamic Impact Loading for Evaluation of Stress in the Crown, Abutment and Cortical Bone Using Different Rehabilitation Materials. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3519. [PMID: 34202625 PMCID: PMC8269525 DOI: 10.3390/ma14133519] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/13/2021] [Accepted: 06/18/2021] [Indexed: 12/19/2022]
Abstract
In the literature, many researchers investigated static loading effects on an implant. However, dynamic loading under impact loading has not been investigated formally using numerical methods. This study aims to evaluate, with 3D finite element analysis (3D FEA), the stress transferred (maximum peak and variation in time) from a dynamic impact force applied to a single implant-supported prosthesis made from different materials. A 3D implant-supported prosthesis model was created on a digital model of a mandible section using CAD and reverse engineering. By setting different mechanical properties, six implant-supported prostheses made from different materials were simulated: metal (MET), metal-ceramic (MCER), metal-composite (MCOM), carbon fiber-composite (FCOM), PEEK-composite (PKCOM), and carbon fiber-ceramic (FCCER). Three-dimensional FEA was conducted to simulate the collision of 8.62 g implant-supported prosthesis models with a rigid plate at a speed of 1 m/s after a displacement of 0.01 mm. The stress peak transferred to the crown, titanium abutment, and cortical bone, and the stress variation in time, were assessed.
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Affiliation(s)
- Oriol Cantó-Navés
- Faculty of Dentistry, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain; (O.C.-N.); (R.M.-G.); (Ó.F.-Á.); (J.C.-T.)
| | - Raul Medina-Galvez
- Faculty of Dentistry, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain; (O.C.-N.); (R.M.-G.); (Ó.F.-Á.); (J.C.-T.)
| | - Xavier Marimon
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya (UIC), 08190 Barcelona, Spain
- Automatic Control Department, Universitat Politècnica de Catalunya (UPC-BarcelonaTECH), 08034 Barcelona, Spain
| | - Miquel Ferrer
- Department of Strength of Materials and Structural Engineering, Universitat Politècnica de Catalunya (UPC-BarcelonaTECH), 08034 Barcelona, Spain;
| | - Óscar Figueras-Álvarez
- Faculty of Dentistry, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain; (O.C.-N.); (R.M.-G.); (Ó.F.-Á.); (J.C.-T.)
| | - Josep Cabratosa-Termes
- Faculty of Dentistry, Universitat Internacional de Catalunya (UIC), 08017 Barcelona, Spain; (O.C.-N.); (R.M.-G.); (Ó.F.-Á.); (J.C.-T.)
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Abd-Ul-Salam H. Peri-implantitis. INNOVATIVE PERSPECTIVES IN ORAL AND MAXILLOFACIAL SURGERY 2021:47-59. [DOI: 10.1007/978-3-030-75750-2_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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