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Verhoeff MC, Lobbezoo F, Ahlberg J, Bender S, Bracci A, Colonna A, Dal Fabbro C, Durham J, Glaros AG, Häggman-Henrikson B, Kato T, Koutris M, Lavigne GJ, Nykänen L, Raphael KG, Svensson P, Wieckiewicz M, Manfredini D. Updating the Bruxism Definitions: Report of an International Consensus Meeting. J Oral Rehabil 2025. [PMID: 40312776 DOI: 10.1111/joor.13985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2024] [Revised: 04/08/2025] [Accepted: 04/16/2025] [Indexed: 05/03/2025]
Abstract
BACKGROUND Bruxism is receiving increasing attention from both clinicians and researchers over the past decades. Recently, it has become clear that some aspects of the currently proposed, expert-driven bruxism definitions raise questions and cause confusion among clinicians, researchers, educators and patients. OBJECTIVES The aim of this report is threefold: (1) to provide the reader with a glossary of the existing definitions, (2) to discuss frequently asked questions regarding these definitions and (3) to suggest a road map for the next steps to be taken towards a better understanding of bruxism. MATERIAL AND METHODS A closed (invitation-only) full-day workshop at the 2024 General Session & Exhibition of the International Association for Dental, Oral and Craniofacial Research (IADR) convened international bruxism experts to discuss the current definitions. Insights from these discussions were compiled, analysed and summarised. RESULT The present report provides a glossary of the constituent terms of the currently proposed definitions, an overview of the frequently asked questions and insights into the next steps to be taken. By current consensus and to avoid any further confusion, the addendum 'in otherwise healthy individuals' has been removed from the specific definitions of sleep and awake bruxism. In addition, the grading system's hierarchical organisation, as proposed previously, was revised and clarified, proposing the inclusion of terms based on self-reporting, clinical examination and device-based assessment tools. CONCLUSION To ascertain that we all use the same terminology, we recommend using the current publication when referring to the definitions of bruxism and its constituent terms.
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Affiliation(s)
- Merel C Verhoeff
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Jari Ahlberg
- Department of Oral and Maxillofacial, Diseases, University of Helsinki, Helsinki, Finland
| | - Steven Bender
- Clinical Center for Facial Pain and Sleep Medicine, Texas A&M Health, Texas A&M College of Dentistry, Dallas, Texas, USA
| | | | - Anna Colonna
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
| | - Cibele Dal Fabbro
- Department of Oral Health, Faculty of Dental Medicine, Université de Montréal, Montréal, Quebec, Canada
- Centre for Advanced Sleep Research, CIUSSS du Nord de l'Ile de Montéal, Montréal, Quebec, Canada
| | - Justin Durham
- Newcastle University's School of Dental Sciences, Newcastle, UK
| | - Alan G Glaros
- School of Dentistry, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | | | - Takafumi Kato
- Department of Oral Physiology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Michail Koutris
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Gilles J Lavigne
- Department of Oral Health, Faculty of Dental Medicine, Université de Montréal, Montréal, Quebec, Canada
- Centre for Advanced Sleep Research, CIUSSS du Nord de l'Ile de Montéal, Montréal, Quebec, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montréal, Quebec, Canada
| | - Laura Nykänen
- Department of Oral and Maxillofacial, Diseases, University of Helsinki, Helsinki, Finland
- Head and Neck Center, Helsinki University Central Hospital, Helsinki, Finland
| | - Karen G Raphael
- Department of Oral & Maxillofacial Pathology, Radiology and Medicine, New York University College of Dentistry, New York, New York, USA
| | - Peter Svensson
- Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden
- Faculty of Dentistry, National University of Singapore, Singapore
| | - Mieszko Wieckiewicz
- Department of Experimental Dentistry, Wroclaw Medical University, Wroclaw, Poland
| | - Daniele Manfredini
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
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Zieliński G, Pająk A, Wójcicki M. Global Prevalence of Sleep Bruxism and Awake Bruxism in Pediatric and Adult Populations: A Systematic Review and Meta-Analysis. J Clin Med 2024; 13:4259. [PMID: 39064299 PMCID: PMC11278015 DOI: 10.3390/jcm13144259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 07/15/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
Background/Objectives: The purpose of this systematic review was to assess the global prevalence of sleep bruxism and awake bruxism in pediatric and adult populations. Methods: This systematic review was conducted by analyzing studies published from 2003 to 2023. The following keyword combination was utilized: prevalence, epidemiology, population, and bruxism. The PubMed database was analyzed, supplemented by manual searches using the Google search. Additionally, the snowballing procedure method was applied. A double assessment of the quality of publications was carried out to preserve the highest possible quality of evidence (e.g., Joanna Briggs Institute critical appraisal checklist). Analyses were conducted using the R statistical language. Results: The global bruxism (sleep and awake) prevalence is 22.22%. The global sleep bruxism prevalence is 21% and awake prevalence is 23%. The occurrence of sleep bruxism, based on polysomnography, was estimated at 43%. The highest prevalence of sleep bruxism was observed in North America at 31%, followed by South America at 23%, Europe at 21%, and Asia at 19%. The prevalence of awake bruxism was highest in South America at 30%, followed by Asia at 25% and Europe at 18%. Conclusions: One in four individuals may experience awake bruxism. Bruxism is a significant factor among women. It was observed that age is a significant factor for the occurrence of sleep bruxism in women. Among the limitations of the study is the lack of analysis of the prevalence of bruxism in Africa and Australia due to not collecting an adequate sample for analysis. The study was registered in the Open Science Framework (10.17605/OSF.IO/ZE786).
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Affiliation(s)
- Grzegorz Zieliński
- Department of Sports Medicine, Medical University of Lublin, 20-093 Lublin, Poland
| | - Agnieszka Pająk
- Clinic of Anaesthesiology and Paediatric Intensive Care, Medical University of Lublin, Gebali Str. 6, 20-093 Lublin, Poland
| | - Marcin Wójcicki
- Independent Unit of Functional Masticatory Disorder, Medical University of Lublin, 20-093 Lublin, Poland
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Saracutu OI, Manfredini D, Bracci A, Ferrari Cagidiaco E, Ferrari M, Colonna A. Awake bruxism behaviors frequency in a group of healthy young adults with different psychological scores. Cranio 2024:1-8. [PMID: 38850025 DOI: 10.1080/08869634.2024.2357199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
OBJECTIVE To assess the frequency of awake bruxism (AB) behaviors in a group of undergraduate dentistry students and correlate it with the status of anxiety and depression. MATERIALS AND METHODS The frequency of five oral behaviors (i.e., relaxed jaw muscle, teeth contact, mandible bracing, teeth clenching, teeth grinding) was evaluated using a smartphone-based ecological momentary assessment (EMA) approach. The anxiety and depression status was investigated with the four-item patient health questionnaire for anxiety and depression (PHQ-4). ANOVA with Tukey post-hoc test was used to assess the difference in frequency of AB behaviors among the four PHQ-4 groups. RESULTS Among the four groups, there was a statistically significant difference in the frequency of relaxed jaw muscle, teeth contact, mandible bracing, and teeth clenching, but not for teeth grinding. CONCLUSION Based on this cross-sectional study's findings, psyche seems to have a determinant impact on AB behaviors, which is significantly higher in individuals with anxiety and depression traits.
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Affiliation(s)
- Ovidiu Ionut Saracutu
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
| | - Daniele Manfredini
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
| | - Alessandro Bracci
- Department of Neurosciences, School of Dentistry, University of Padova, Padova, Italy
| | | | - Marco Ferrari
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
| | - Anna Colonna
- Department of Medical Biotechnologies, School of Dentistry, University of Siena, Siena, Italy
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Cannatà D, Giordano F, Bartolucci ML, Galdi M, Bucci R, Martina S. Attitude of Italian dental practitioners toward bruxism assessment and management: A survey-based study. Orthod Craniofac Res 2024; 27:228-236. [PMID: 37632163 DOI: 10.1111/ocr.12706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/02/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
INTRODUCTION Bruxism is a spectrum of masticatory muscles activities. According to the recent evidence and international consensus, there is no indication to treat bruxism unless clinical consequences are present. The aim of the present study was to investigate the approach of Italian dentists to bruxism in their clinical practice. METHODS An anonymous online survey was developed, composed by 26 items grouped into five sections: (1) Characteristics of the respondent (Q1-Q6); (2) Bruxism frequencies (Q7-Q11); (3) Bruxism assessment (Q12-Q15); (4) Bruxism management (Q16-Q20); (5) Occlusal splints therapy (Q21-Q26). RESULTS A total of 384 practitioners, including specialists and non-specialists, participated in this survey. The majority of the respondents reported that 1-3 out of ten patients presented with bruxism. The diagnosis is mainly performed with non-instrumental methods, and facial pain and dental wear are the major clinical consequence associated with bruxism. Almost the entire sample of respondents report to offer occlusal splints to bruxism patients, and 41% refer to perform occlusal adjustments. Almost half of the respondents have never proposed any form of cognitive-behavioural therapy. CONCLUSION The results of the current survey highlighted several inconsistencies in Italian dentists' approaches to bruxism, suggesting the need for better education of practitioners and for the development of a standardized protocol to assess and manage bruxism in dental practices.
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Affiliation(s)
- Davide Cannatà
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy
| | - Francesco Giordano
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy
| | - Maria Lavinia Bartolucci
- Section of Orthodontics and Sleep Dentistry, Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Marzio Galdi
- Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Naples, Italy
| | - Rosaria Bucci
- Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Naples, Italy
| | - Stefano Martina
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy
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Fulek M, Wieckiewicz M, Szymanska-Chabowska A, Gac P, Poreba R, Markiewicz-Gorka I, Wojakowska A, Mazur G, Martynowicz H. Inflammatory Markers and Sleep Architecture in Sleep Bruxism-A Case-Control Study. J Clin Med 2024; 13:687. [PMID: 38337381 PMCID: PMC10856576 DOI: 10.3390/jcm13030687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Background: Sleep bruxism (SB) is a common sleep-related movement behavior with a multifaceted etiology and a deficiently understood pathophysiology. A recent hypothesis suggests a link between SB and systemic inflammation. The scope of the study was to determine whether bruxers have altered sleep structure and different levels of inflammatory parameters compared to nonbruxers. Methods: A total of 83 adults underwent full-night polysomnography. The polysomnograms were evaluated using the American Academy of Sleep Medicine (AASM) guidelines. Then, the blood samples were obtained from the participants by venipuncture and the analyses were performed. The study group was divided based on bruxism episode index (BEI) into two groups: BEI ≤ 4 and BEI > 4. Results: In comparison with nonbruxers, the oxygen desaturation index (ODI) was significantly higher in severe bruxers (7.5 ± 11.08 vs. 3.33 ± 5.75, p < 0.005), as well as the arousal parameters (7.77 ± 4.68 vs. 4.03 ± 2.97, p < 0.001), and the mean oxygen desaturation (3.49 ± 0.69 vs. 3.01 ± 0.67, p < 0.05). Moreover, the differences in sleep architecture and deprivation of the deep sleep phase were observed, the non-REM sleep stage 3 was significantly shorter in severe bruxers (p < 0.03). Differences were also noted in non-REM sleep stage 1 and REM sleep phase. In the investigated group, there were no statistical differences in inflammatory cytokines levels between bruxers and nonbruxers. Conclusions: Sleep bruxism is associated with sleep structure alterations and may be associated with deep sleep phase deprivation. The inflammatory markers are not linearly correlated with the severity of sleep bruxism expressed as BEI.
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Affiliation(s)
- Michal Fulek
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
| | - Mieszko Wieckiewicz
- Department of Experimental Dentistry, Wroclaw Medical University, 26 Krakowska St., 50-425 Wroclaw, Poland;
| | - Anna Szymanska-Chabowska
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
| | - Pawel Gac
- Department of Population Health, Division of Environmental Health and Occupational Medicine, Wroclaw Medical University, Mikulicza-Radeckiego 7, 50-368 Wrocław, Poland; (P.G.); (I.M.-G.)
| | - Rafal Poreba
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
| | - Iwona Markiewicz-Gorka
- Department of Population Health, Division of Environmental Health and Occupational Medicine, Wroclaw Medical University, Mikulicza-Radeckiego 7, 50-368 Wrocław, Poland; (P.G.); (I.M.-G.)
| | - Anna Wojakowska
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
| | - Grzegorz Mazur
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
| | - Helena Martynowicz
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland; (A.S.-C.); (R.P.); (A.W.); (G.M.); (H.M.)
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Häggman-Henrikson B, Ali D, Aljamal M, Chrcanovic BR. Bruxism and dental implants: A systematic review and meta-analysis. J Oral Rehabil 2024; 51:202-217. [PMID: 37589382 DOI: 10.1111/joor.13567] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 04/24/2023] [Accepted: 08/07/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Overload from bruxism may affect survival of dental implants. OBJECTIVES To evaluate implant failure and marginal bone loss (MBL) in patients presenting with probable bruxism compared to non-bruxers. The study was registered in PROSPERO (CRD42021238397). METHODS An electronic search September 2022 in PubMed/Medline, Web of Science and Science Direct was combined with a hand search. Two independent reviewers carried out abstract screening, full-text assessment, quality assessment (National Institutes of Health tool) and data extraction. Only studies that provided information on self-report and clinical examination needed for the diagnosis of at least 'probable' bruxism were included. A pairwise random-effect meta-analysis was carried out. RESULTS In total 1338 studies were identified, and after screening and full-text assessment 27 studies that presented data on 2105 implants in probable bruxers and 10 264 implants in non-bruxers were included, with 138 and 352 implant failures in respective groups. the meta-analysis showed that implants placed in probable bruxers had a higher risk of failure than in non-bruxers (OR 2.189; 95% CI 1.337, 3.583, p = .002). A meta-regression showed that follow-up time did not affect this OR. Eighteen studies provided general data on MBL but did not report results separated between bruxers and non-bruxers. Therefore, an analysis of MBL was not possible. CONCLUSION The results of the present systematic review show that implants placed in probable bruxers present a significantly higher risk of failure than implants placed in non-bruxers. This should be considered in treatment planning and management of implant patients.
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Affiliation(s)
| | - David Ali
- Faculty of Odontology, Malmö University, Malmö, Sweden
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Nykänen L, Lobbezoo F, Kämppi A, Manfredini D, Ahlberg J. Awake bruxism in temporomandibular disorders patients referred to tertiary care: A retrospective study on its assessment and TMD management. J Oral Rehabil 2024; 51:181-187. [PMID: 37423766 DOI: 10.1111/joor.13559] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/13/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
BACKGROUND Bruxism is defined as a repetitive jaw-muscle activity characterised by clenching or grinding of the teeth and/or by bracing or thrusting of the mandible. Bruxism can occur during sleep (sleep bruxism, SB) or during wakefulness (awake bruxism, AB). To date, the effect of AB on the purported negative consequences of bruxism has remained unclear. OBJECTIVES The assessment of AB, its relation to temporomandibular disorders (TMD) treatment modalities, and their possible outcomes were investigated among TMD patients resistant to treatment in primary care and referred to a tertiary care clinic. METHODS The records of 115 patients were studied. Patients were referred to the Head and Neck Centre, Department of Oral and Maxillofacial Diseases, Helsinki University Central Hospital, for TMD treatment between 2017 and 2020. The data derived from the eligible patients' records included the following: background data (age and sex), referral data (reason and previous treatment), medical background (somatic and psychiatric), clinical and possible radiological diagnoses at a tertiary care clinic, treatment modalities for masticatory muscle myalgia, bruxism assessment, its possible treatment modalities and their outcomes, and overall management outcome. We analysed the outcomes of single treatment modalities and combined groups of modalities. For the demographic data, the Chi-squared test and Fischer's Exact test were used to determine the associations between the categorical variables. A Sankey-diagram was used to describe the flow of treatment. RESULTS Temporomandibular joint-pain-dysfunction syndrome (K07.60) was the most frequent single reason to refer a patient to tertiary care (17.4%). At referral, men had myalgia (M79.1) significantly more often (p = .034) than women. Similarly, men had depression (p = .002) more often and other psychiatric diagnoses (p = .034). At tertiary care, the presence of AB was assessed in 53.9%, and self-reported AB was recorded in 48.7%. In patients with possible AB, those who were prescribed neuropathic pain medication showed significantly less improvement in symptoms (p = .021) than those who underwent splint therapy (p = .009). Overall, half of the patients showed overall improvement in their TMD symptoms from the treatment combinations. CONCLUSION Despite several treatment modalities, only half of the patients showed improvement in their symptoms in the present study. A standardised assessment method encompassing all factors contributing to bruxism behaviours and their consequences is suggested.
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Affiliation(s)
- Laura Nykänen
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
- Head and Neck Center, Department of Oral and Maxillofacial Diseases, Helsinki University Central Hospital, Helsinki, Finland
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Antti Kämppi
- 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
| | - Jari Ahlberg
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
- Head and Neck Center, Department of Oral and Maxillofacial Diseases, Helsinki University Central Hospital, Helsinki, Finland
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Ahlberg J, Lobbezoo F, Hublin C, Piirtola M, Kaprio J. Smoking cessation is not associated with a decline in reported sleep bruxism in middle-aged Finnish twins: Data revisited. J Oral Rehabil 2024; 51:117-118. [PMID: 37248199 DOI: 10.1111/joor.13524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 04/17/2023] [Accepted: 05/22/2023] [Indexed: 05/31/2023]
Affiliation(s)
- Jari Ahlberg
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - Maarit Piirtola
- Institute for Molecular Medicine Finland FIMM, HiLIFE, University of Helsinki, Helsinki, Finland
- UKK Institute for Health Promotion Research, Tampere, Finland
| | - Jaakko Kaprio
- Institute for Molecular Medicine Finland FIMM, HiLIFE, University of Helsinki, Helsinki, Finland
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Lobbezoo F, Ahlberg J, Manfredini D. The advancement of a discipline: The past, present and future of bruxism research. J Oral Rehabil 2024; 51:1-4. [PMID: 37458517 DOI: 10.1111/joor.13562] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 07/14/2023] [Indexed: 07/25/2023]
Affiliation(s)
- Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (AC-TA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - 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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10
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Ahlberg J, Lobbezoo F, Manfredini D, Piirtola M, Hublin C, Kaprio J. Self-reported sleep bruxism and mortality in 1990-2020 in a nationwide twin cohort. J Oral Rehabil 2024; 51:125-130. [PMID: 36840364 DOI: 10.1111/joor.13441] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 01/18/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023]
Abstract
BACKGROUND The association of sleep bruxism with mortality has not been studied. OBJECTIVES Altogether 12 040 subjects from the nationwide Finnish twin cohort were included in the analyses. We examined whether self-reported sleep bruxism is associated with increased risk of mortality, and if so, whether the effect is independent of known common risk factors. The time span of the follow-up was 30 years. METHODS Cox proportional hazards regression models (Hazard Ratios and their 95% Confidence Intervals) adjusted by age, sex and covariates were used to assess the effect of baseline bruxism status in 1990 on future mortality in 1990-2020. RESULTS The risk of mortality among all participants (n = 12 040), independent of missing covariates and adjusted by age and sex, was 40% higher in weekly bruxers than in never bruxers (HR 1.40, 95% CI 1.16-1.68, p < .001). However, when adjusted by all studied covariates, (n = 11 427) the risk was no longer observed (HR 1.04, 95% CI 0.86-1.25, p = .717). Despite the overall lack of between bruxism and mortality after adjustment for covariates, we examined the cause-specific risks for major cause-of-death groups. There were no substantial associations of weekly bruxism with major disease outcomes by the fully adjusted hazard ratios for them. CONCLUSION Bruxism does not kill-in line with its definition of being rather a behaviour (with all its phenotypes) than a disease.
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Affiliation(s)
- Jari Ahlberg
- Department of Oral and Maxillofacial Diseases, University of Helsinki, and Helsinki University Hospital, Helsinki, Finland
| | - Frank Lobbezoo
- Department of Orofacial pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Daniele Manfredini
- School of Dentistry, Department of Biomedical Technologies, University of Siena, Siena, Italy
| | - Maarit Piirtola
- Institute for Molecular Medicine Finland FIMM, HiLIFE, University of Helsinki, Helsinki, Finland
- UKK Institute for Health Promotion Research, Tampere, Finland
| | | | - Jaakko Kaprio
- Institute for Molecular Medicine Finland FIMM, HiLIFE, University of Helsinki, Helsinki, Finland
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Nykänen L, Manfredini D, Lobbezoo F, Kämppi A, Bracci A, Ahlberg J. Assessment of awake bruxism by a novel bruxism screener and ecological momentary assessment among patients with masticatory muscle myalgia and healthy controls. J Oral Rehabil 2024; 51:162-169. [PMID: 37036436 DOI: 10.1111/joor.13462] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Bruxism is a masticatory muscle activity occurring during sleep or wakefulness, involving grinding and clenching of teeth and/or jaw bracing. As yet, the aetiology, epidemiology and consequences of awake bruxism (AB) are largely unknown. OBJECTIVES The aims of the study were to AB behaviours using a novel bruxism screener (BruxScreen) questionnaire part and Ecological Momentary Assessment (EMA; BruxApp©) on AB behaviours, and to investigate AB's prevalence among masticatory muscle myalgia patients and non-patients. METHODS Altogether, 115 participants (masticatory myalgia patients referred to a specialist clinic (n = 67) and non-patients (n = 46)) filled in a bruxism screener questionnaire to report bruxism behaviours and jaw symptoms. A selection of both groups did a week-long EMA (patients n = 12, non-patients n = 11) to report AB behaviours. The chi-squared test was used to determine group differences in categorical variables. A logistic regression model was fitted to study the probability of AB. RESULTS According to BruxScreen, bruxism behaviours and jaw symptoms were more frequent in patients than in non-patients (p < .001). Based on EMA, 14.6% of the behaviour in patients was tooth clenching; for non-patients, this was 0.5% (p < .000). Relaxed muscles were reported by patients and non-patients at 20.6% and 56.4%, respectively (p < .021). Logistic regression, adjusted by age and sex, revealed that patients reported AB 5 times more often than non-patients (OR 4.8, 95% CI 2.1-11.2). CONCLUSION Awake bruxism behaviours are significantly more frequent in masticatory muscle myalgia patients than non-patients and associate with frequent bruxism-related symptoms. Self-reported teeth clenching seems to be the most significant sign of AB behaviour.
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Affiliation(s)
- Laura Nykänen
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Daniele Manfredini
- School of Dentistry, Department of Biomedical Technologies, University of Siena, Siena, 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
| | - Antti Kämppi
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | | | - Jari Ahlberg
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
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Fulek M, Wieckiewicz M, Szymanska-Chabowska A, Michalek-Zrabkowska M, Fulek K, Lachowicz G, Poreba R, Mazur G, Martynowicz H. Systematic Review on the Link between Sleep Bruxism and Systemic Chronic Inflammation. Brain Sci 2023; 13:1104. [PMID: 37509035 PMCID: PMC10377141 DOI: 10.3390/brainsci13071104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Sleep bruxism (SB) is a sleep-related behavior characterized as rhythmic (phasic) or non-rhythmic (tonic) masticatory muscle activity. SB is a common sleep behavior with a predominantly central origin. The aim of this systematic review was to evaluate the relationship between inflammatory status and SB according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 (PRISMA 2020). The research was registered at PROSPERO (CRD42023395985). We performed a systematic literature analysis using five different databases. Furthermore, the backward snowballing technique was applied to identify additional papers. Initially, 28 papers were screened from the database search, and 162 papers were revealed in the backward snowballing process. Eventually, five articles were included. Data concerning the inflammatory status of patients experiencing SB were investigated and summarized. Due to the heterogeneity of the compared studies, only a qualitative comparison and narrative summary were performed. The results suggest that SB could be associated with systemic inflammation. In fact, this systematic review revealed that there are no papers conclusively showing that the inflammatory status in bruxers is comparable to non-bruxers. However, each of the examined studies utilized different methods of assessing systemic inflammation, which makes the results dubious.
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Affiliation(s)
- Michal Fulek
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Mieszko Wieckiewicz
- Department of Experimental Dentistry, Wroclaw Medical University, 26 Krakowska St., 50-425 Wroclaw, Poland
| | - Anna Szymanska-Chabowska
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Monika Michalek-Zrabkowska
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Katarzyna Fulek
- Department and Clinic of Otolaryngology, Head and Neck Surgery, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Gabriella Lachowicz
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Rafal Poreba
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Grzegorz Mazur
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
| | - Helena Martynowicz
- Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, 213 Borowska St., 50-556 Wroclaw, Poland
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Ommerborn MA, Özbek A, Grunwald M, Depprich RA, Walentek NP, Franken M, Schäfer R. Effects on general pain perception and dental pulp sensibility in probable sleep bruxism subjects by experimentally induced pain in a pilot study. Sci Rep 2023; 13:5836. [PMID: 37037840 PMCID: PMC10086053 DOI: 10.1038/s41598-023-33019-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 04/05/2023] [Indexed: 04/12/2023] Open
Abstract
In this pilot study, the general pain perception and the dental pulp sensibility of probable sleep bruxism (SB) subjects were compared with that of non-SB subjects. The cold pressor test (CPT), electric pulp test (EPT), and thermal pulp test with CO2 snow were executed by one trained dentist (blind to SB diagnosis). A one-factorial multivariate analysis of variance (MANOVA) with SB diagnosis as independent variable and standardized measures regarding pain perception and evaluation was performed. One-hundred-and-five participants (53 SB and 52 non-SB subjects) were included. The one-factorial MANOVA revealed a significant difference between SB and non-SB subjects (p = 0.01) concerning pain perception variables. Post-hoc univariate analyses of variance (ANOVA) showed statistically significant lower general pain tolerance (p = 0.02), higher general subjective sensibility of the teeth (p < 0.01), and a statistical trend for higher subjective dental pain intensity (p = 0.07) in SB subjects. In most of the standardized variables, probable SB subjects seem to react and feel similar to non-SB subjects. However, as probable SB subjects subjectively perceive their teeth to be more sensitive and tend to rate their subjective dental pain intensity more intensely after CO2 testing, data might point to a somatosensory amplification.
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Affiliation(s)
- Michelle Alicia Ommerborn
- Department of Operative Dentistry, Periodontology, and Endodontology, Faculty of Medicine, Heinrich-Heine-University, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - Adem Özbek
- Department of Operative Dentistry, Periodontology, and Endodontology, Faculty of Medicine, Heinrich-Heine-University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Maike Grunwald
- Department of Operative Dentistry, Periodontology, and Endodontology, Faculty of Medicine, Heinrich-Heine-University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Rita Antonia Depprich
- Department of Cranio- and Maxillofacial Surgery, Faculty of Medicine, Heinrich-Heine-University, Düsseldorf, Germany
| | - Nicole Pascale Walentek
- Department of Operative Dentistry, Periodontology, and Endodontology, Faculty of Medicine, Heinrich-Heine-University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Michael Franken
- Department of Operative Dentistry, Periodontology, and Endodontology, Faculty of Medicine, Heinrich-Heine-University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Ralf Schäfer
- Clinical Institute of Psychosomatic Medicine and Psychotherapy, Faculty of Medicine, Heinrich-Heine-University, Düsseldorf, Germany
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Toyama N, Ekuni D, Fukuhara D, Sawada N, Yamashita M, Komiyama M, Nagahama T, Morita M. Nutrients Associated with Sleep Bruxism. J Clin Med 2023; 12:jcm12072623. [PMID: 37048706 PMCID: PMC10095372 DOI: 10.3390/jcm12072623] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/17/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Background: The purpose of the present research was to identify nutrients related to sleep bruxism and to establish a hypothesis regarding the relationship between sleep bruxism and nutrients. Methods: We recruited 143 Japanese university students in 2021 and assigned them to sleep bruxism (n = 58) and non-sleep bruxism groups (n = 85), using an identical single-channel wearable electromyography device. To investigate nutrient intakes, participants answered a food frequency questionnaire based on food groups. We assessed differences in nutrient intakes between the sleep bruxism and non-sleep bruxism groups. Results: Logistic regression modeling showed that sleep bruxism tended to be associated with dietary fiber (odds ratio, 0.91; 95% confidence interval, 0.83–1.00; p = 0.059). In addition, a subgroup analysis selecting students in the top and bottom quartiles of dietary fiber intake showed that students with sleep bruxism had a significantly lower dietary fiber intake (10.4 ± 4.6 g) than those without sleep bruxism (13.4 ± 6.1 g; p = 0.022). Conclusion: The present research showed that dietary fiber intake may be related to sleep bruxism. Therefore, we hypothesized that dietary fiber would improve sleep bruxism in young adults.
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