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Mitchell A, Heales L, Treleaven J, Too B, Tyrrell R, Dinsdale A. Pain-free bite force in a healthy population: Within-session test-retest reliability in different sitting positions. J Oral Rehabil 2024; 51:1440-1449. [PMID: 38685714 DOI: 10.1111/joor.13720] [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: 11/17/2023] [Revised: 03/20/2024] [Accepted: 04/18/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Pain-free bite force (PFBF) is a promising measure to evaluate bite function in temporomandibular disorders (TMDs), yet the reliability of the measure is unknown. OBJECTIVES Establish the (1) within-session test-retest reliability of PFBF in a healthy population for a single and mean of three trials in supported and unsupported sitting; (2) standard error of measurement (SEM) and minimal detectable change (MDC). METHODS Thirty healthy participants (n = 15 female, mean [SD] age = 34.4 [11.0] years) completed two sessions (30-60 min apart) comprising three PFBF trials on each side, in both supported and unsupported sitting, to provide data for 60 (30 participants × two sides) test-retest assessments. Test-retest reliability for the first trial and mean of three trials in each position were determined using intraclass correlation coefficients (ICCs), before calculating the corresponding SEM and MDC for males (M) and females (F) respectively. RESULTS Within-session reliability was considered excellent for a single trial in supported sitting (ICC = 0.85; SEM M/F = 99/84 N; MDC M/F = 275/232 N) and unsupported sitting (ICC = 0.91; SEM M/F = 72/59 N, MDC M/F = 200/163 N), and for a mean of three trials in supported sitting (ICC = 0.89; SEM M/F = 66/79 N, MDC M/F = 182/220 N) and unsupported sitting (ICC = 0.92; SEM M/F = 64/59 N, MDC M/F = 177/164 N). CONCLUSION Single and a mean of three trials in supported and unsupported sitting appear reliable methods to measure PFBF in a healthy population. Testing PFBF using a mean of three trials in unsupported sitting appears superior over other methods though due to higher test-retest reliability, and lower SEM and MDC. Future studies should examine the reliability of PFBF in TMD populations.
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Affiliation(s)
- Andrew Mitchell
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
- Physiotherapy Department, The Prince Charles Hospital, Chermside, Queensland, Australia
| | - Luke Heales
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Queensland, Australia
| | - Julia Treleaven
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Brendan Too
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
- Joint Health Command, Serco, RAAF Base, Williamtown, New South Wales, Australia
| | - Ryan Tyrrell
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
- Physiotherapy Department, Queen Elizabeth II Jubilee Hospital, Coopers Plains, Queensland, Australia
| | - Alana Dinsdale
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia
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Fatola D, Nasution ID, Sabri M, Chairunnisa R. Pain-related analysis on a resorbed ridge with various denture occlusal schemes using finite element method. Braz Dent J 2024; 35:5798. [PMID: 39045988 PMCID: PMC11262769 DOI: 10.1590/0103-6440202405798] [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: 10/28/2023] [Accepted: 03/11/2024] [Indexed: 07/25/2024] Open
Abstract
Resorbed alveolar ridges, particularly in the lower jaw, have a small denture supporting area, which may cause the stress distribution of mastication load to exceed the pressure-pain threshold (PPT) and induce pain in the mucosa or potentially worsen the ridge resorption. Thus, choosing the ideal occlusal scheme among bilateral balanced (BBO), lingualized (LO), and monoplane (MO) for such conditions becomes crucial. The experiment was conducted using the finite element method on a modeling of a resorbed alveolar ridge in the lower jaw with three dentures placed on top, each of which was given different loading points according to the tooth arrangement of BBO, LO, and MO. The axial load was 100 N, and the resultant oblique loads on BBO and LO were 119 N and 106 N, respectively. The von Mises stresses for BBO, LO, and MO were observed in nine denture-supporting areas, and the results showed that the axial load did not produce stresses that exceeded the PPT value (0.64925 MPa) for BBO, LO, and MO with the highest value on area H, 0.43229 MPa, 0.39715 MPa, and 0.31576 MPa, respectively. However, the oblique load direction showed that the BBO had more areas (area E 0.80778 MPa and area H 0.76256 MPa) that exceeded the PPT than LO (area E 0.64394 MPa). The lingualized occlusal scheme is ideal for patients with resorbed alveolar ridge conditions, especially in terms of limiting interferences when the denture is functioning while maintaining comfort but still providing good masticatory performance and satisfactory esthetics.
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Affiliation(s)
- David Fatola
- . Department of Prosthodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia
| | - Ismet Danial Nasution
- . Department of Prosthodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia
| | - Muhammad Sabri
- .Computational & Experimental System Mechanics Research Centre, Department of Mechanical Engineering, Universitas Sumatera Utara, Medan, Indonesia
| | - Ricca Chairunnisa
- . Department of Prosthodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia
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Lou J, Wang J, Fu Y, Huang D, Liu M, Zhao R, Deng J. Association between Oral Health and Depressive Symptoms in Chinese Older Adults: The Mediating Role of Dietary Diversity. Nutrients 2024; 16:1231. [PMID: 38674922 PMCID: PMC11054946 DOI: 10.3390/nu16081231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Diet is a modifiable factor in healthy population aging. Additionally, oral health and diet are important factors affecting depressive symptoms. To assess the mediating role of dietary diversity (DD) in oral health and depressive symptoms in older adults, we selected 8442 participants aged ≥ 65 years from the 2018 Chinese Longitudinal Health Longevity Survey (CLHLS) for a cross-sectional study. Depressive symptoms were determined based on scores on the 10-item Center for Epidemiologic Studies Depression Scale (CESD-10). Dietary diversity scores (DDS) were established based on the frequency of intake of food groups. Oral health was measured by denture use and toothbrushing frequency. Stepwise multiple linear regression and PROCESS macros were used for mediated effects analysis and testing. The sample had a positive detection rate of 44.1% for depressive symptoms, 40.8% for denture use, and 41.9% for once-a-day toothbrushing. Denture use (ρ = -0.077, p < 0.01) and toothbrushing frequency (ρ = -0.115, p < 0.01) were negative predictors of depressive symptoms in older adults. DD significantly mediated the association between denture use (indirect effect -0.047; 95%CI: -0.068-0.028; p < 0.001), toothbrushing frequency (indirect effect -0.041; 95%CI: -0.054-0.030; p < 0.001), and depressive symptoms. Denture use and toothbrushing frequency not only directly reduce the risk of depressive symptoms in older adults, but also indirectly affect depressive symptoms through DD.
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Affiliation(s)
- Jiaxu Lou
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Jian Wang
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Yingjie Fu
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Derong Huang
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Mei Liu
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Ruonan Zhao
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
| | - Jiahui Deng
- Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China; (J.L.); (Y.F.); (D.H.); (M.L.); (R.Z.); (J.D.)
- NHC Key Lab of Health Economics and Policy Research, Shandong University, Jinan 250012, China
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Ali Alkhalaf Z, Sghaireen MG, Ganji KK, Alam MK, Issrani R, Mohammed Alsaleh R, Almegren SZ, Gamal Salloum M. Unveiling the Influence of the Curve of Spee on Bite Force and Chewing Ability: A Comparative Study. Int J Clin Pract 2024; 2024:6533841. [PMID: 38420595 PMCID: PMC10901573 DOI: 10.1155/2024/6533841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/07/2024] [Accepted: 02/10/2024] [Indexed: 03/02/2024] Open
Abstract
Aim To investigate the impact of the curve of Spee (CS) accentuation on bite force, chewing ability, and additionally, other factors that influence chewing ability and bite force such as restorations, caries, gender, habits, and TMJ problems. Materials and Methods 231 participants (118 male and 113 female, mean age = ±27.96 years) were recruited for this cross-section study. Participants completed a data collection sheet in which age, gender, Angle's classification of malocclusion, overjet, overbite, TMJ problems, habits, restorations, and caries experience were recorded. Two examiners made a lower impression, chewing ability test and measured the bite force for each participant. Measurement of the CS was obtained digitally from the poured dental cast, and the categorization was as follows: flat (<1 mm), normal (1-2 mm), or deep (>2 mm). Results The mean maximum bite force (MBF) was 468.722 N for participants with flat CS, 389.822 N for normal CS, 647.08 N for deep CS, and 384.667 N for reverse CS. The average MBF was higher for participants with deep CS (p < 0.05). MBF force was higher in males. However, BMI was not significantly related to MBF values. Participants with normal and flat CS have comparable chewing capacity (p > 0.05). Also, a significant difference in bite force and chewing ability was found between the three categories of CS (p < 0.05). Conclusion Bite force variations across various CS types were linked to gender and habits. Chewing ability showed no differences concerning gender, habits, TMJ problems, caries, or restorations, emphasizing CS's significant impact on bite force while showcasing the unchanged nature of chewing ability amidst diverse factors.
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Affiliation(s)
- Zainab Ali Alkhalaf
- Department of Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
| | - Mohammed Ghazi Sghaireen
- Department of Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
| | - Kiran Kumar Ganji
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
- Department of Periodontology & Oral Implantology, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education & Research, Sawangi (Meghe), Wardha, India
| | - Mohammad Khursheed Alam
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Center for Transdisciplinary Research (CFTR), Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Department of Public Health, Faculty of Allied Health Sciences, Daffodil lnternational University, Dhaka, Bangladesh
| | - Rakhi Issrani
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Raghad Mohammed Alsaleh
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Aljouf, Saudi Arabia
| | - Sultana Zamil Almegren
- Department of Periodontology and Oral Implantology, Ministry of Health, Dental Clinics Complex West of Riyadh, Laban, Riyadh, Saudi Arabia
| | - Mahmoud Gamal Salloum
- Department of Substitutive Dental Sciences, College of Dentistry & Pharmacy, Buraydah Private Colleges, Buraydah, Saudi Arabia
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Faot F, Petiz HCFC, Bielemann AM, Possebon APDR, Boscato N, Chagas-Júnior OL, Pinto LDR. Functional performance and impact on the quality of life of three treatment strategies for mandibular edentulism: Results of a parallel 3-group cross-sectional study. J Dent 2023; 136:104625. [PMID: 37473828 DOI: 10.1016/j.jdent.2023.104625] [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: 05/07/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023] Open
Abstract
OBJECTIVES This parallel cross-sectional study compared masticatory function and patient-centered outcomes among 3 removable treatment strategies for mandibular edentulism. METHODS Thirty-six edentulous participants rehabilitated using 3 removable treatment strategies for mandibular edentulism were allocated to one of the three groups (n=12): CCD (control), 2-IMO, and 3-IMO. Narrow diameter implants were installed using single-stage surgery and conventionally loaded with stud abutments. After 3 months of usage, the quality of life, maximum bite force, and masticatory function were evaluated. Data were analyzed with the Kruskal-Wallis test and post hoc pairwise Mann-Whitney tests with Bonferroni correction (α=0.05). RESULTS The 2-IMO and 3-IMO wearers did not show significant differences in any outcome, except for the 2 domains of 3-IMO wearers quality of life that obtained better Pain and General Performance scores. Both IMO groups presented significantly higher maximum bite force than CCD wearers. The 2-IMO wearers showed superior outcomes to the CCD group in all outcomes of the masticatory performance test and the X50, B and ME5.6 outcomes of the swallowing threshold test (p = 0.01), while 3-IMO participants only showed superior masticatory performance in terms of lower X50 values (19.86%, p = 0.02) and higher ME 2.8 (141.15%, p = 0.04) than CCD wearers. CONCLUSIONS Compared to 2-IMO wearers, 3-IMO wearers report superior impact of treatment on daily living activities in the Pain and General Performance domains. 2-IMO and 3-IMO wearers showed no significant differences between them for all evaluated bite force and masticatory function parameters. CLINICAL SIGNIFICANCE Although overdentures retained by 3 implants (3-IMO) provide biomechanical advantages over those retained by 2 implants (2-IMO), superior clinical and functional effectiveness is not yet proven.
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Affiliation(s)
- Fernanda Faot
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Gonçalves Chaves Street 457 RS, Pelotas 96015-560, Brazil.
| | | | | | - Anna Paula da Rosa Possebon
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Gonçalves Chaves Street 457 RS, Pelotas 96015-560, Brazil
| | - Noeli Boscato
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Gonçalves Chaves Street 457 RS, Pelotas 96015-560, Brazil
| | - Otacílio Luiz Chagas-Júnior
- Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Federal University of Pelotas, RS, Brazil
| | - Luciana de Rezende Pinto
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Gonçalves Chaves Street 457 RS, Pelotas 96015-560, Brazil
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Srinivasan M, Kamnoedboon P, Angst L, Müller F. Oral function in completely edentulous patients rehabilitated with implant-supported dental prostheses: A systematic review and meta-analysis. Clin Oral Implants Res 2023; 34 Suppl 26:196-239. [PMID: 37750517 DOI: 10.1111/clr.14068] [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: 10/28/2022] [Revised: 03/10/2023] [Accepted: 03/30/2023] [Indexed: 09/27/2023]
Abstract
OBJECTIVES This review evaluated the effects of rehabilitation with implant-supported prostheses on the oral function of completely edentulous adults. MATERIALS AND METHODS Systematic literature searches were performed to identify records reporting on oral function in completely edentulous adults rehabilitated with implant-supported prostheses. Meta-analyses were performed on various outcomes including bite force, masticatory performance, muscle activity, mandibular movement/chewing pattern, and salivary flow. RESULTS 5507 records were identified. Thirty studies qualified for data extraction and analysis. The kappa (𝛋) for the search and identification strategy ranged between 0.50 and 1.00. Meta-analysis was performed grouping the studies by outcomes and split by time points of 6-12 months, 12-36 months, and >36 months after implant therapy. The meta-analyses revealed a significant improvement in oral function of completely edentulous adults after rehabilitation with implant-supported prostheses at 6-12 months (Z = -4.895, p < .001; 95% CI: -0.703, -0.301; τ2 = .609; Q = 114.953, df = 17, p < .001; I2 = 85.2%), at 12-36 months (Z = -4.886, p < .001; 95% CI: -0.580, -0.248; τ2 = .908; Q = 280.611, df = 35, p < .001; I2 = 87.5%) and at more than 36 months (Z = -9.108, p < .001; 95% CI: -1.472, -0.951; τ2 = .019; Q = 7.918, df = 7, p = .340; I2 = 11.6%). The included studies demonstrated a low to moderate risk of bias. CONCLUSIONS This systematic review concluded that the oral function of completely edentate adults significantly improved with implant-supported/retained prostheses, even when only one jaw received implant therapy. Therefore, implant therapy should be promoted for edentulous adults to alleviate the shortcomings of conventional complete removable dental prostheses.
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Affiliation(s)
- Murali Srinivasan
- Clinic of General-, Special Care, and Geriatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Porawit Kamnoedboon
- Clinic of General-, Special Care, and Geriatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lea Angst
- Clinic of General-, Special Care, and Geriatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Frauke Müller
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Werneck RD, Queiroz DA, Freitas MIM, Rio DLD, Turssi CP. Association of Non-carious Cervical Lesions with Oral Hygiene Aspects and Occlusal Force. J Contemp Dent Pract 2023; 24:71-79. [PMID: 37272137 DOI: 10.5005/jp-journals-10024-3457] [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: 06/06/2023]
Abstract
AIM The purpose of this case-control (CT) study was to investigate the association between the presence of non-carious cervical lesions (NCCLs) with occlusal force and other potential risk factors. MATERIALS AND METHODS Thirty-nine participants with NCCLs [cases (CS)] and 39 with no NCCLs [control (CT)] attending the dental clinic of the Faculdades Integradas São Pedro (FAESA), located in Brazil, were enrolled in this study. Information was collected through anamnesis, clinical examination, and a questionnaire addressing aspects related to tooth brushing, dentifrice, and mouthwash use. In clinical examination, patients were submitted to four measurements of occlusal force in the maxillary first premolars and maxillary first molars, using a strain gauge sensor of medium intensity, the Flexiforce (Tekscan, South Boston, Massachusetts, United States of America). The sensor was calibrated for the unit of measurement in Newtons (N). Data were analyzed using a student's t-test and multiple logistic regression, e with a significance level of 5%. RESULTS There was no statistically significant difference between the case and CT groups regarding the bite force in the four measured regions. Logistic regression identified sex as a factor significantly associated with NCCLs (p = 0.020). The odds ratio showed the female sex had more chance (OR = 6.082; CI = 1.332-27.765) of having NCCLs. CONCLUSION It is concluded that females presented a higher risk factor for NCCLs than men. In contrast, there was no association of occlusal force, as well as aspects related to brushing and deleterious habits. CLINICAL SIGNIFICANCE Females have a higher risk factor for non-carious lesions than men.
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Affiliation(s)
- Rafael Dario Werneck
- Department of Prosthodontics, College of Dentistry, FAESA - Centro Universitário, Vitória, Espírito Santo, Brazil, Orcid: https://orcid.org/0000-0002-4862-1354
| | - Daher Antonio Queiroz
- Department of Restorative Dentistry and Prosthodontics, The University of Texas Health Science Center at Houston (UT Health); School of Dentistry, Houston, Texas, United States of America, Orcid: https://orcid.org/0000-0002-1477-8599
| | - Mariana Itaborai Moreira Freitas
- Department of Prosthodontics and Periodontology, University of Campinas - Piracicaba Dental School, Piracicaba, Sao Paulo, Brazil, Phone: +55 19 2106-5211, e-mail: , Orcid: https://orcid.org/0000-0001-7729-8536
| | - Diana Leyva Del Rio
- Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, United States of America, Orcid: https://orcid.org/0000-0001-7584-4302
| | - Cecilia Pedroso Turssi
- Division of Cariology and Restorative Dentistry, Sao Leopoldo Mandic Institute and Dental Research Center, Campinas, Sao Paulo, Brazil, Orcid: https://orcid.org/0000-0002-0078-9895
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Pantea M, Ciocoiu RC, Greabu M, Ripszky Totan A, Imre M, Țâncu AMC, Sfeatcu R, Spînu TC, Ilinca R, Petre AE. Compressive and Flexural Strength of 3D-Printed and Conventional Resins Designated for Interim Fixed Dental Prostheses: An In Vitro Comparison. MATERIALS 2022; 15:ma15093075. [PMID: 35591410 PMCID: PMC9104158 DOI: 10.3390/ma15093075] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 04/16/2022] [Accepted: 04/20/2022] [Indexed: 12/19/2022]
Abstract
A provisionalization sequence is essential for obtaining a predictable final prosthetic outcome. An assessment of the mechanical behavior of interim prosthetic materials could orient clinicians towards selecting an appropriate material for each clinical case. The aim of this study was to comparatively evaluate the mechanical behavior—with compressive and three-point flexural tests—of certain 3D-printed and conventional resins used to obtain interim fixed dental prostheses. Four interim resin materials were investigated: two 3D-printed resins and two conventional resins (an auto-polymerized resin and a pressure/heat-cured acrylic resin). Cylindrically shaped samples (25 × 25 mm/diameter × height) were obtained for the compression tests and bar-shaped samples (80 × 20 × 5 mm/length × width × thickness) were produced for the flexural tests, observing the producers’ recommendations. The resulting 40 resin samples were subjected to mechanical tests using a universal testing machine. Additionally, a fractographic analysis of failed samples in bending was performed. The results showed that the additive manufactured samples exhibited higher elastic moduli (2.4 ± 0.02 GPa and 2.6 ± 0.18 GPa) than the conventional samples (1.3 ± 0.19 GPa and 1.3 ± 0.38 GPa), as well as a higher average bending strength (141 ± 17 MPa and 143 ± 15 MPa) when compared to the conventional samples (88 ± 10 MPa and 76 ± 7 MPa); the results also suggested that the materials were more homogenous when produced via additive manufacturing.
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Affiliation(s)
- Mihaela Pantea
- Department of Fixed Prosthodontics and Occlusology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 20221 Bucharest, Romania; (M.P.); (T.C.S.); (A.E.P.)
| | - Robert Cătălin Ciocoiu
- Department of Metallic Materials Science, Physical Metallurgy, University Politehnica of Bucharest, 313 Splaiul Independentei, J Building, 060042 Bucharest, Romania;
| | - Maria Greabu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 020021 Bucharest, Romania; (M.G.); (A.R.T.)
| | - Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 020021 Bucharest, Romania; (M.G.); (A.R.T.)
| | - Marina Imre
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 020221 Bucharest, Romania;
| | - Ana Maria Cristina Țâncu
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 020221 Bucharest, Romania;
- Correspondence: (A.M.C.Ț.); (R.S.)
| | - Ruxandra Sfeatcu
- Department of Oral Health and Community Dentistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Calea Plevnei Street, 010221 Bucharest, Romania
- Correspondence: (A.M.C.Ț.); (R.S.)
| | - Tudor Claudiu Spînu
- Department of Fixed Prosthodontics and Occlusology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 20221 Bucharest, Romania; (M.P.); (T.C.S.); (A.E.P.)
| | - Radu Ilinca
- Department of Biophysics, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Calea Plevnei Street, 010221 Bucharest, Romania;
| | - Alexandru Eugen Petre
- Department of Fixed Prosthodontics and Occlusology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17-23 Plevnei Street, 20221 Bucharest, Romania; (M.P.); (T.C.S.); (A.E.P.)
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An investigation into the total mandibular length and its potential correlation with the intraoral forces. TRANSLATIONAL RESEARCH IN ANATOMY 2022. [DOI: 10.1016/j.tria.2022.100176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Vozza I, Manzon L, Passarelli PC, Pranno N, Poli O, Grippaudo C. The Effects of Wearing a Removable-Partial-Denture on the Bite Forces: A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111401. [PMID: 34769912 PMCID: PMC8583365 DOI: 10.3390/ijerph182111401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 11/26/2022]
Abstract
Background: Removable partial dentures are a frequently used prosthetic treatment in the elderly population, but different types or RPDs might guarantee different chewing capabilities. In many studies, the relationship between chewing and aging has been reported and it has been shown that efficient chewing can improve the overall quality of life. Objectives: In the present study, the relationship between maximum bite force (MBF) and RPDs was studied. A relationship between the body mass index (BMI) and the type of prosthesis was also analyzed. Methods: 240 elderly patients, 120 males and 120 females, with bilateral posterior edentulism (class 1 of Kennedy classification) who had been wearing an RPD for at least a year, were recruited. Patients were divided into two groups: Group 1: male (n = 60) and female (n = 60) patients with bilateral edentulous areas located posterior to the remaining natural teeth and natural teeth in the opposite dental arch. Group 2: male (n = 60) and female (n = 60) patients with maxillary and mandibular bilateral edentulous areas located posterior to the remaining natural teeth. Their Body Mass Index (BMI) and Maximum bite force (MBF) were measured and compared according to the material and design of their RPD. Results: In both Groups, patients wearing cobalt-chrome alloy RPDs (Co-Cr-RPD) (Group 1: 20.25 ± 6.7 MBF, p < 0.001; Group 2: 16.0 ± 5.7 MBF, p < 0.001) had an increased MBF when compared to polymethylmethacrylate RPD (PMMA-RPD) (Group 1: 12.9 ± 3.36 MBF; Group 2: 10.4 + 2.8 MBF), and Valplast RPD (V-RPD) (Group 1: 14.3 ± 4.7 MBF; Group 2: 11.3 ± 3.4 MBF) users. There were no significant differences in bite force between patients wearing PMMA-RPD and V- RPD in both Groups. Patients in Group 2 showed a lower MBF than those in Group 1 (Group 1: 16.05 ± 6.13 MBF; Group 2: 12.6 ± 4.84 MBF; p < 0.001). Conclusions: A reduction in chewing force can lead to choosing softer foods for nutrition, which can lead to an increase in BMI. Our results show that only CoCr-RPD wearers were able to chew consistent food, whereas PMMA- RPD and V-RPD, due to the properties of the materials, their instability, and the possibility of causing pain during mastication, determined a limitation in the choice of food for many of the participants.
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Affiliation(s)
- Iole Vozza
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00168 Rome, Italy; (L.M.); (N.P.); (O.P.)
- Correspondence: ; Tel.: +39-0649976612 or +39-0649976649
| | - Licia Manzon
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00168 Rome, Italy; (L.M.); (N.P.); (O.P.)
| | - Pier Carmine Passarelli
- Department of Head and Neck, Division of Oral Surgery and Implantology, Catholic University of the Sacred Heart, Fondazione Policlinico Gemelli IRCCS, 00168 Rome, Italy; (P.C.P.); (C.G.)
| | - Nicola Pranno
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00168 Rome, Italy; (L.M.); (N.P.); (O.P.)
| | - Ottavia Poli
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00168 Rome, Italy; (L.M.); (N.P.); (O.P.)
| | - Cristina Grippaudo
- Department of Head and Neck, Division of Oral Surgery and Implantology, Catholic University of the Sacred Heart, Fondazione Policlinico Gemelli IRCCS, 00168 Rome, Italy; (P.C.P.); (C.G.)
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Cicciù M, Cervino G, Fiorillo L. The third teething: gerodontology and new therapy approaches. Minerva Dent Oral Sci 2021; 71:1-4. [PMID: 34549576 DOI: 10.23736/s2724-6329.21.04591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marco Cicciù
- Department of Biomedical and Dental Sciences, Morphological and Functional Images, Policlinico G. Martino, University of Messina, Messina, Italy
| | - Gabriele Cervino
- Department of Biomedical and Dental Sciences, Morphological and Functional Images, Policlinico G. Martino, University of Messina, Messina, Italy
| | - Luca Fiorillo
- Department of Biomedical and Dental Sciences, Morphological and Functional Images, Policlinico G. Martino, University of Messina, Messina, Italy - .,Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania Luigi Vanvitelli, Naples, Italy.,Department of Implantology, Faculty of Dentistry, University of Aldent, Tirana, Albania
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Poli O, Manzon L, Niglio T, Ettorre E, Vozza I. Masticatory Force in Relation with Age in Subjects with Full Permanent Dentition: A Cross-Sectional Study. Healthcare (Basel) 2021; 9:healthcare9060700. [PMID: 34207805 PMCID: PMC8228061 DOI: 10.3390/healthcare9060700] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 01/16/2023] Open
Abstract
Masticatory performance is directly correlated with masticatory muscle work to grind and cut the food. Chewing efficacy is decisive to eating a variety of foods needed maintain general health status at all ages. Older people have oral problems that get worse with age. Elders have more pathologies such as periodontal diseases, caries, tooth loss and inadequate dental prostheses than younger subjects. Objectives: to investigate the correlation between masticatory bite force (MBF) and body mass index (BMI) vs. aging and sex. Methods: This study was performed on 426 subjects (213 females plus 213 male) assigned into five different groups by age. Group “A” aged from 20 to 35 years; group “B” aged 45–59 years; group “C” aged 60–69 years; group “D” aged 70–79 years; and group “E” aged more than 79 years. Results: There were not statistically significant differences in right-side MBF versus left-side MBF. The differences between sex were statistically significant with a stronger bite in males than females (p < 0.05). At the same time, younger subjects had a stronger bite than elders (p < 0.05). In group “E”, more corpulent subjects (BMI > 25) had an MBF higher than less corpulent subjects (BMI < 25, p < 0.05). The analysis of mean MBF showed a statistically significant difference within all groups stratified by BMI with mean values inversely proportional with age (p < 0.001). Conclusion: The results in our study confirm data from many scientific papers. The importance of the present paper was to correlate data between and within a large sample with a wide range of ages. Our sample subjects had a 31%–33% decrease in MBF from group “A” to group “E” group, but they all had full permanent dentation and they preserved a valid MBF.
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Affiliation(s)
- Ottavia Poli
- Dental School, “Sapienza” University, 00185 Rome, Italy; (O.P.); (L.M.)
| | - Licia Manzon
- Dental School, “Sapienza” University, 00185 Rome, Italy; (O.P.); (L.M.)
| | | | - Evaristo Ettorre
- Department of Cardiovascular, Respiratory, Nephrological, Anesthetic and Geriatric Sciences, “Sapienza” University, 00185 Rome, Italy;
| | - Iole Vozza
- Dental School, “Sapienza” University, 00185 Rome, Italy; (O.P.); (L.M.)
- Correspondence:
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