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Tumani Üstdal B, Evlice B, Soydan Çabuk D, Duyan Yüksel H, Güner Akgül İ, Alkaya B, Arçay G. Evaluation of the thickness of masticatory muscles in patients with chronic periodontitis by ultrasonography. Oral Radiol 2024; 40:402-408. [PMID: 38558244 DOI: 10.1007/s11282-024-00746-6] [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: 01/26/2024] [Accepted: 03/06/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES Periodontitis is one of the most common chronic inflammatory diseases. It causes changes in the biting abilities of individuals. However, periodontal treatment has positive effects on masticatory function. The aim of this study is to determine the effect of periodontitis and periodontal treatment on masticatory abilities by measuring masseter and temporal muscle thicknesses with ultrasonography before and after periodontal treatment in chronic periodontitis patients. METHODS The patients included in the study were determined by clinical and radiological examination. The thickness of the masseter and temporal muscles of the patients were measured by ultrasonography. Periodontal measurements and treatments of the patients were completed by a single physician. IBM SPSS 20.0 (IBM Corp., Armonk, NY) statistical program was used for statistical analysis. RESULTS A statistically significant difference was found between the values of periodontal measurements before and after treatment (p<0.05). In the ultrasonography measurements of the thickness of masseter and anterior temporal muscles, a statistically significant increase was observed in both rest and contraction values at all time intervals (p<0.05). Muscle thicknesses of male patients were higher than female patients. CONCLUSIONS Periodontitis negatively affects the masticatory performance of individuals. Chronic periodontitis patients should be referred for periodontal treatment without wasting time.
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Affiliation(s)
- Berkhas Tumani Üstdal
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Turkey.
| | - Burcu Evlice
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Turkey
| | - Damla Soydan Çabuk
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Turkey
| | - Hazal Duyan Yüksel
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Turkey
| | - İmran Güner Akgül
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Turkey
| | - Bahar Alkaya
- Department of Periodontology, Faculty of Dentistry, Çukurova University, Adana, Turkey
| | - Gökçe Arçay
- Department of Periodontology, Faculty of Dentistry, Çukurova University, Adana, Turkey
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2
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Alsharif HNH, Ganji KK, Alam MK, Manay SM, Bandela V, Sghaireen MG, Mousa MA. Periodontal Clinical Parameters as a Predictor of Bite Force: A Cross-Sectional Study. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5582946. [PMID: 34046498 PMCID: PMC8128538 DOI: 10.1155/2021/5582946] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/22/2021] [Accepted: 04/27/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To investigate the correlation of periodontal parameters and bite force in different stages of periodontitis after phase I periodontal therapy. METHODS Periodontal clinical parameters such as mobility, attachment loss, gingival recession, and percentage of bone remaining were recorded at the mandibular first molar region after phase I therapy in subjects categorized according to the stage of periodontitis. Corresponding bite force was recorded at the first mandibular molar region using a bite force device after phase I therapy. ANOVA test was used to assess the significant difference among different groups. Pearson correlation coefficient was used to assess the correlation between measured variables. RESULTS The ANOVA test represents that there is no statistical significant difference between the bite force in stage I, stage II, and stage III type of periodontitis. A strong positive correlation was found (r = 0.537) between bite force and percentage of remaining alveolar bone support whereas negative correlation was observed in measured parameters such as mobility (r = -0.0181), attachment loss (r = -0.608), and gingival recession (r = -0.435). CONCLUSION Among all periodontal clinical parameters, the percentage of remaining alveolar bone is the strong predictor of bite force and mobility; attachment loss and gingival recession cannot predict the bite force in the first molar region. Bite force is variable in different stages of periodontitis.
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Affiliation(s)
| | - Kiran Kumar Ganji
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | - Mohammad Khursheed Alam
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | | | - Vinod Bandela
- Department of Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | - Mohammed Ghazi Sghaireen
- Department of Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
| | - Mohammed Assayed Mousa
- Department of Prosthetic Dental Sciences, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
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3
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Jansen van Vuuren L, Jansen van Vuuren WA, Broadbent JM, Duncan WJ, Waddell JN. Development of a bite force transducer for measuring maximum voluntary bite forces between individual opposing tooth surfaces. J Mech Behav Biomed Mater 2020; 109:103846. [PMID: 32543410 DOI: 10.1016/j.jmbbm.2020.103846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 12/13/2022]
Abstract
Bite forces are studied in order to understand a wide range of factors pertaining to the mastication system. Various strain gauge transducers have been employed to measure bite forces, with several descriptions of these available in the literature; unfortunately, many reports provide insufficient detail to enable accurate reproduction. The aim of this project was to develop a bite force transducer with the capability of measuring maximum voluntary bite forces between individual opposing tooth surfaces. Furthermore, in an attempt to address the issue of vague device descriptions in the available literature, a detailed account of the transducer development has been included. A novel strain gauge transducer was designed and built. Bite forces of forty individuals were measured to verify the capabilities and clinical application of the device.
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Affiliation(s)
- L Jansen van Vuuren
- Department of Oral Rehabilitation, Faculty of Dentistry, Sir John Walsh Research Institute, Otago University, New Zealand.
| | - W A Jansen van Vuuren
- Department of Oral Rehabilitation, Faculty of Dentistry, Sir John Walsh Research Institute, Otago University, New Zealand
| | - J M Broadbent
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, Otago University, New Zealand
| | - W J Duncan
- Department of Oral Sciences, Faculty of Dentistry, Sir John Walsh Research Institute, Otago University, New Zealand
| | - J N Waddell
- Department of Oral Rehabilitation, Faculty of Dentistry, Sir John Walsh Research Institute, Otago University, New Zealand
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Lamba AK, Tandon S, Faraz F, Garg V, Aggarwal K, Gaba V. Effect of periodontal disease on electromyographic activity of muscles of mastication: A cross‐sectional study. J Oral Rehabil 2020; 47:599-605. [DOI: 10.1111/joor.12943] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 01/14/2020] [Accepted: 02/02/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Arundeep Kaur Lamba
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
| | - Shruti Tandon
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
| | - Farrukh Faraz
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
| | - Vibhuti Garg
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
| | - Kamal Aggarwal
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
| | - Varun Gaba
- Department of Periodontics and Oral Implantology Maulana Azad Institute of Dental Sciences New Delhi India
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Taşdemir Z, Etöz M, Köy Ö, Soydan D, Alkan A. Masseter muscle thickness and elasticity in periodontitis. J Oral Sci 2019; 62:43-47. [PMID: 31708551 DOI: 10.2334/josnusd.18-0341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This study aimed to compare the thickness and elasticity of the masseter muscle between patients with gingivitis and patients with periodontitis. A total of 124 patients (63 gingivitis, 61 chronic periodontitis) were recruited at the start of the study, but only 84 patients were declared as final participants. Patients were divided into two groups: (1) patients suffering from gingivitis and (2) those with generalized chronic periodontitis. Clinical (PI, plaque index; GI, gingival index; PD, probing depth; CAL, clinical attachment loss; and BOP, bleeding on probing scores) and ultrasonographic (thickness and elasticity of the masseter muscle) measurements of periodontitis were performed. There were no significant differences in gender, age, body mass index, education status, income level, or marital status between the two groups (P > 0.05). The mean age ± SD for the gingivitis and periodontitis groups was 39.5 ± 10.8 years and 44.8 ± 8.8 years, respectively. There were significant differences between the two groups in the number of PI, GI, PD, CAL, and BOP scores. There were significant differences between the two groups when thickness of masseter during contraction and at rest was taken into account. The gingivitis group had significantly thicker masseter during both contraction and rest. On the other hand, when the elasticity of the masseter was evaluated, there were no significant differences found between the two groups and two sides for each group. Masseter muscle thickness in the periodontitis group was found to be decreased compared with that in the gingivitis group. Furthermore, loss of periodontal tissues due to periodontitis reduces the masticatory ability.
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Affiliation(s)
- Zekeriya Taşdemir
- Department of Periodontology, Faculty of Dentistry, Erciyes University
| | - Meryem Etöz
- Department of Oral Radiology, Faculty of Dentistry, Erciyes University
| | - Özge Köy
- Department of Periodontology, Faculty of Dentistry, Erciyes University
| | - Damla Soydan
- Department of Oral Radiology, Faculty of Dentistry, Erciyes University
| | - Arzu Alkan
- Department of Periodontics, Faculty of Dentistry, Bezm-i Alem University
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Prema A, Vimala G, Rao U, Shameer A, Gayathri. Occlusal bite force changes during fixed orthodontic treatment in patients with different vertical facial morphology. Saudi Dent J 2019; 31:355-359. [PMID: 31337940 PMCID: PMC6626278 DOI: 10.1016/j.sdentj.2019.02.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 11/25/2022] Open
Affiliation(s)
- A Prema
- Department of Orthodontics, Tamilnadu Dental College and Hospital, Chennai, Tamil Nadu, India
| | - G Vimala
- Department of Orthodontics, Tamilnadu Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Usha Rao
- Department of Orthodontics, Tamilnadu Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Abdul Shameer
- Department of Orthodontics, Tamilnadu Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Gayathri
- Department of Orthodontics, Tamilnadu Dental College and Hospital, Chennai, Tamil Nadu, India
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SOARES FG, PORTELLA FF, FRASCA LCDF, BAVARESCO CS, RIVALDO EG. Masticatory satisfaction, ability, and performance in partially dentate patients after periodontal therapy. REVISTA DE ODONTOLOGIA DA UNESP 2018. [DOI: 10.1590/1807-2577.13118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction Understanding the effects of periodontal therapy is essential in performance and satisfaction of partially dentate patients. Objective To assess the effect of subgingival periodontal treatment in performance and masticatory satisfaction and ability as reported by partially dentate patients with untreated chronic periodontitis. Materials and method Patients were given nonsurgical periodontal treatment and masticatory satisfaction, ability, and performance were evaluated before and after treatment. Performance was assessed based on sieving chewed standardized chewable material, while satisfaction and ability were analyzed using a questionnaire based on OHIP-EDENT. Result Mean numbers of functional tooth units were 10.36 ± 1.43 anterior and 6.73 ± 0.79 posterior teeth. Masticatory performance did not vary significantly (p = 0.075), and mean particle sizes before and after treatment were 4.23 ± 1.84 mm and 3.90 ± 0.75 mm, respectively. Overall satisfaction and ability scores after treatment were higher (p > 0.05) compared with scores prior to the periodontal intervention. Conclusion Periodontal treatment improves masticatory satisfaction and ability with no effect on performance.
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Lee JY, Lee ES, Kim GM, Jung HI, Lee JW, Kwon HK, Kim BI. Unilateral Mastication Evaluated Using Asymmetric Functional Tooth Units as a Risk Indicator for Hearing Loss. J Epidemiol 2018; 29:302-307. [PMID: 30344198 PMCID: PMC6614080 DOI: 10.2188/jea.je20180052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Some previous studies reported hearing ability can be reduced by impaired masticatory ability, but there has been little evidence reported of an association between hearing loss and unilateral mastication. Therefore, this study aimed to investigate the relationship between unilateral mastication (UM), estimated from individual functional tooth units (FTUs), and hearing loss in a representative sample of Korean adults. METHODS The analyzed data were obtained from 1,773 adults aged 40-89 years who participated in Korean national survey. Hearing loss was defined as a pure-tone average of >25 dB at frequencies of 0.5, 1, 2, and 4 kHz in either ear. In each subject, UM was calculated as the difference in the sums of the FTU scores, which is an index of posterior tooth occlusion, on the two sides of the oral cavity. The scores were used to classify the UM into low, moderate, and high. The adjusted odds ratios (aORs) and their 95% confidence intervals (CIs) were calculated in multivariable logistic regression analyses. RESULTS When controlling for sociodemographic factors, the aOR for hearing loss was 3.12 (95% CI, 1.21-8.03) for high UM relative to low UM. This association remained in a fully-adjusted model containing factors related to noise exposure (aOR 2.88; 95% CI, 1.12-7.46). CONCLUSION Adults with high UM as measured using FTUs showed a higher occurrence of hearing loss than those with low UM.
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Affiliation(s)
- Joo-Young Lee
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Eun-Song Lee
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Gyung-Min Kim
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Hoi-In Jung
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Jeong-Woo Lee
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Ho-Keun Kwon
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry
| | - Baek-Il Kim
- Department of Preventive Dentistry & Public Oral Health, Brain Korea 21 PLUS Project, Yonsei University College of Dentistry.,Oral Science Research Institute, Yonsei University College of Dentistry
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9
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Changes of bite force and occlusal contacts in the retention phase of orthodontic treatment: A controlled clinical trial. Am J Orthod Dentofacial Orthop 2017; 152:767-777. [PMID: 29173856 DOI: 10.1016/j.ajodo.2017.03.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 11/22/2022]
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10
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Periodontal Ligament Stem Cells in the Periodontitis Microenvironment Are Sensitive to Static Mechanical Strain. Stem Cells Int 2017; 2017:1380851. [PMID: 28316629 PMCID: PMC5339497 DOI: 10.1155/2017/1380851] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/16/2017] [Indexed: 02/07/2023] Open
Abstract
During orthodontic treatment, periodontium remodeling of periodontitis patients under mechanical force was abnormal. We have previously confirmed the function impairment of periodontal ligament stem cells (PDLSCs) in the periodontitis microenvironment which might be involved in this pathological process. However, the response of PDLSCs in periodontitis microenvironment to mechanical force remains unclear. Therefore, in the present study, we introduced a Flexcell tension apparatus and investigated the response of PDLSCs obtained from periodontal tissues of periodontitis patients (PPDLSCs) and of those obtained from healthy periodontal tissues (HPDLSCs) to different magnitudes of static mechanical strain (SMS). PPDLSCs showed increased proliferation, decreased osteogenic activity, activated osteoclastogenesis, and greater secretion of inflammatory cytokines. Different magnitudes of SMS exerted distinct effects on HPDLSCs and PPDLSCs. An SMS of 12% induced optimal effects in HPDLSCs, including the highest proliferation, the best osteogenic ability, the lowest osteoclastogenesis, and the lowest secretion of inflammatory cytokines, while the optimal SMS for PPDLSCs was 8%. Excessive SMS damaged PPDLSCs function, including decreased proliferation, an imbalance between osteogenesis and osteoclastogenesis, and an activated inflammatory response. Our data suggest that PPDLSCs are more sensitive and less tolerant to SMS, and this may explain why mechanical force results in undesirable effects in periodontitis patients.
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11
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Affiliation(s)
- Mei Xin Chong
- School of Dentistry, International Medical Univercity
| | | | - Kai Hoe Goh
- School of Dentistry, International Medical Univercity
| | - Farhana Rahman
- Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, University Technology MARA
| | - Yoshinobu Shoji
- Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, University Technology MARA
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12
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Maruyama K, Nishioka S, Miyoshi N, Higuchi K, Mori H, Tanno S, Tomooka K, Eguchi E, Furukawa S, Saito I, Sakurai S, Nishida W, Osawa H, Tanigawa T. The impact of masticatory ability as evaluated by salivary flow rates on obesity in Japanese: The Toon health study. Obesity (Silver Spring) 2015; 23:1296-302. [PMID: 25959641 DOI: 10.1002/oby.21071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 02/09/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE This study examined the associations of masticatory ability evaluated by chewing-gum-stimulated salivary flow rate with anthropometric indices among a general Japanese population. METHODS In total, 921 Japanese men and women aged 30-79 years participated in this cross-sectional study. Saliva production was stimulated by 5 min of gum chewing, then collected; salivary flow rate was calculated as g/min. Overweight, abdominal obesity in terms of waist circumference (WC), and waist-hip ratio (WHR), and elevated skinfold thickness statuses were determined. RESULTS The multivariable odds ratio and 95% confidence intervals of overweight, abdominal obesity (WC, WHR), and elevated skinfold thickness status for highest vs. lowest quartile of salivary flow rate were 0.59 (0.37-0.95, P for trend = 0.02), 0.65 (0.43-0.98, P = 0.03), 0.54 (0.35-0.83, P < 0.01), and 0.61 (0.39-0.96, P < 0.01), respectively. The linear trends of multivariable-adjusted means of BMI, WC, WHR, and skinfold thickness according to quartiles of salivary flow rate did not vary after stratification by overweight status. CONCLUSIONS Higher stimulated salivary flow rate, a surrogate marker for mastication ability, was associated with lower prevalence of overweight, abdominal obesity (whether WC- or WHR-defined), and elevated skinfold thickness among the general Japanese population.
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Affiliation(s)
- Koutatsu Maruyama
- Department of Basic Medical Research and Education, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Shinji Nishioka
- Department of Basic Nursing and Health Science, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Noriko Miyoshi
- Department of Public Health, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Kana Higuchi
- Department of Basic Nursing and Health Science, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Hiromi Mori
- Department of Public Health, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Sakurako Tanno
- Center for Sleep Medicine, Ehime University Hospital, Shitsukawa, Toon, Ehime, Japan
| | - Kiyohide Tomooka
- Department of Basic Nursing and Health Science, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Eri Eguchi
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shinya Furukawa
- Department of Public Health, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Isao Saito
- Department of Basic Nursing and Health Science, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Susumu Sakurai
- Department of Clinical Laboratory Science, Faculty of Health Care, Tenri Health Care University, Tenri, Nara, Japan
| | | | - Haruhiko Osawa
- Department of Molecular and Genetic Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Takeshi Tanigawa
- Department of Public Health, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, Japan
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13
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Okada T, Ikebe K, Inomata C, Takeshita H, Uota M, Mihara Y, Matsuda K, Kitamura M, Murakami S, Gondo Y, Kamide K, Masui Y, Takahashi R, Arai Y, Maeda Y. Association of periodontal status with occlusal force and food acceptability in 70-year-old adults: from SONIC Study. J Oral Rehabil 2014; 41:912-9. [DOI: 10.1111/joor.12214] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2014] [Indexed: 11/28/2022]
Affiliation(s)
- T. Okada
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - K. Ikebe
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - C. Inomata
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - H. Takeshita
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - M. Uota
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - Y. Mihara
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - K. Matsuda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
| | - M. Kitamura
- Department of Periodontics; Osaka University Graduate School of Dentistry; Osaka Japan
| | - S. Murakami
- Department of Periodontics; Osaka University Graduate School of Dentistry; Osaka Japan
| | - Y. Gondo
- Department of Clinical Thanatology and Geriatric Behavioral Science; Osaka University; Graduate School of Human Sciences; Osaka Japan
| | - K. Kamide
- Division of Health Science; Osaka University Graduate School of Medicine; Osaka Japan
| | - Y. Masui
- Division of Social and Human Sciences; Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology; Tokyo Japan
| | - R. Takahashi
- Division of Social and Human Sciences; Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology; Tokyo Japan
| | - Y. Arai
- Department of Geriatric Medicine; Keio University; School of Medicine; Tokyo Japan
| | - Y. Maeda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
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14
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Abe Y, Nogami K, Mizumachi W, Tsuka H, Hiasa K. Occlusal-supporting ability of individual maxillary and mandibular teeth. J Oral Rehabil 2012; 39:923-30. [DOI: 10.1111/joor.12008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Abe
- Department of Advanced Prosthodontics, Applied Life Sciences; Institute of Biomedical & Health Sciences; Hiroshima University; Hiroshima Japan
| | - K. Nogami
- Department of Advanced Prosthodontics, Applied Life Sciences; Institute of Biomedical & Health Sciences; Hiroshima University; Hiroshima Japan
| | - W. Mizumachi
- Department of Advanced Prosthodontics, Applied Life Sciences; Institute of Biomedical & Health Sciences; Hiroshima University; Hiroshima Japan
| | - H. Tsuka
- Department of Advanced Prosthodontics, Applied Life Sciences; Institute of Biomedical & Health Sciences; Hiroshima University; Hiroshima Japan
| | - K. Hiasa
- Department of Advanced Prosthodontics, Applied Life Sciences; Institute of Biomedical & Health Sciences; Hiroshima University; Hiroshima Japan
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15
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Pereira LJ, Gazolla CM, Magalh^|^atilde;es IB, Dominguete MHL, Vilela GR, Castelo PM, Marques LS, Bilt AVD. Influence of periodontal treatment on objective measurement of masticatory performance. J Oral Sci 2012; 54:151-7. [DOI: 10.2334/josnusd.54.151] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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16
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Mechanical stress enhances production of cytokines in human periodontal ligament cells induced by Porphyromonas gingivalis. Arch Oral Biol 2011; 56:251-7. [PMID: 20970115 DOI: 10.1016/j.archoralbio.2010.09.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 08/24/2010] [Accepted: 09/19/2010] [Indexed: 02/01/2023]
Abstract
OBJECTIVE We have previously reported that human periodontal ligament (hPDL) cells produced many kinds of cytokines as a result of bacterial stimulation, including stimulation with Porphyromonas gingivalis (P. gingivalis). However, the effects of mechanical stress on cytokine production in hPDL cells stimulated by periodontopathogenic bacteria are not clearly understood. In this study, we investigated the effects of mechanical stress on the production of inflammatory cytokines in hPDL cells induced by stimulation with P. gingivalis. METHODS The hPDL cells were exposed to various levels of mechanical stress (1, 6, 10 and 50MPa) and costimulated with mechanical stress and P. gingivalis for 24h. Cytokine mRNA expressions were determined by RT-PCR. Cytokines in the culture supernatant were assessed by ELISA, and morphologic changes in hPDL cells were observed. RESULTS The expressions of interleukin (IL)-6, IL-8 and tumor necrosis factor-α mRNA were observed in hPDL cells after exposure to mechanical stress. Moreover, the production of IL-6 and IL-8 increased significantly after exposure to mechanical stress ranging from 1 to 10MPa. The amount of IL-8 in the culture supernatants of hPDL cells costimulated with P. gingivalis and mechanical stress was significantly higher than the expected additive amount. The morphology of hPDL cells did not change after exposure to 6MPa, but these cells were partly detached from the Petri dish after exposure to 50MPa. CONCLUSIONS These results suggest that local inflammation of the periodontal ligament may be induced mainly by periodontal bacteria, and mechanical stress may promote local inflammation.
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YAMANAKA R, AKTHER R, FURUTA M, KOYAMA R, TOMOFUJI T, EKUNI D, TAMAKI N, AZUMA T, YAMAMOTO T, KISHIMOTO E. Relation of dietary preference to bite force and occlusal contact area in Japanese children. J Oral Rehabil 2009; 36:584-91. [DOI: 10.1111/j.1365-2842.2009.01971.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Correlations of noncarious cervical lesions and occlusal factors determined by using pressure-detecting sheet. J Dent 2008; 36:774-9. [DOI: 10.1016/j.jdent.2008.05.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Revised: 05/13/2008] [Accepted: 05/16/2008] [Indexed: 11/24/2022] Open
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Takeuchi N, Yamamoto T. Correlation between periodontal status and biting force in patients with chronic periodontitis during the maintenance phase of therapy. J Clin Periodontol 2008; 35:215-20. [PMID: 18190555 DOI: 10.1111/j.1600-051x.2007.01186.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM The association between periodontal status and biting force is unclear. The aim of this study was to investigate the relation between periodontal status and biting force in patients with chronic periodontitis during the maintenance phase of periodontal treatment. MATERIAL AND METHODS A total of 198 patients, who had entered a periodontal maintenance programme, were examined for the presence of restorations on the occlusal surface, probing pocket depth, clinical attachment loss (CAL), bleeding on probing, and mobility of teeth. Quantitative analysis of total biting force, occlusal contact area and biting pressure (defined by biting force per 1 mm(2) of occlusal contact area) was performed using microcapsular pressure-sensitive sheets. RESULTS A multiple stepwise regression analysis showed that total biting force and occlusal contact area were positively associated with the number of present teeth and negatively associated with female gender, mean CAL and mean probing pocket depth. Biting pressure was positively associated with CAL. CONCLUSIONS Reduced periodontal support was found to be associated with decreased total biting force and with increased biting pressure (defined as force per 1 mm(2) of occlusal contact area).
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Affiliation(s)
- Noriko Takeuchi
- Department of Oral Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Abstract
The influence of alveolar bone support on the functional capability of a tooth remains unclear. It was hypothesized that a reduction in alveolar support causes an increase of maximum stress in the periodontal structures. Mathematical models of the maxillary incisor to simulate in vivo tooth movement were constructed with periodontium of normal or reduced bone height, and normal or widened periodontal ligament (PDL) space. Under simulated bite force, the maximum tensile stress at the lingual cervical region in the PDL increased with bone height reduction, but decreased with PDL widening. The compressive stress at the cervical region in the cortical bone was no more than 22% of the yield strength of bone, and did not increase by the height reduction with widened PDL. The result suggests that the height reduction potentially causes mechanical damage to the PDL, but, of itself, is not likely to have a negative effect on the bone.
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Affiliation(s)
- M Ona
- Removable Partial Prosthodontics, Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan
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Abstract
BACKGROUND The aim of this study was to compare the biting abilities (bite force [BF] and occlusal contact area [OCA]) of chronic periodontitis patients with those of control patients with healthy periodontia by using pressure-sensitive sheets. METHODS The study population consisted of 20 patients with chronic periodontitis whose initial periodontal therapy was completed and 20 control subjects with healthy periodontia. Periodontitis was diagnosed by radiographs and measurements of probing depth and clinical attachment level. Pressure-sensitive sheets were used for the quantitative analysis of BF and OCA. RESULTS Both mean BF and OCA values were greater in the healthy control group compared to those of the study group. The differences between the groups were statistically significant at the 95% confidence level. CONCLUSION Reduced periodontal support in the absence of inflammation negatively affected biting abilities.
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Affiliation(s)
- Arzu Alkan
- Department of Periodontology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
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Johansson AS, Svensson KG, Trulsson M. Impaired Masticatory Behavior in Subjects With Reduced Periodontal Tissue Support. J Periodontol 2006; 77:1491-7. [PMID: 16945024 DOI: 10.1902/jop.2006.050355] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Mechanoreceptors situated in the periodontal ligament provide detailed information about intensive and spatial aspects of tooth loads, which support the neural control of masticatory forces. We asked whether a reduced periodontal ligament due to periodontitis, and, thus, an altered mechanoreceptive innervation of the teeth, would affect masticatory behavior when subjects used incisors to hold and split food. METHODS We tested 11 subjects with reduced periodontal tissue support that rendered 30% to 70% alveolar bone loss for at least one pair of opposing anterior incisors. Forces were recorded when subjects used their affected incisors to hold half of a peanut for approximately 4 seconds and then split it. Age- and gender-matched healthy subjects served as the control group. None of the participants showed acute oral symptoms or massive periodontal inflammation. RESULTS The test group used greater force when holding food between the teeth (1.1+/-0.4 N [ mean+/-1 SD]) compared to the control group (0.4+/-0.2 N). Hold forces used by subjects in the test group were also more variable, both within and between trials. The increase in bite force applied to split the peanut was slower and more hesitant for subjects in the test group compared to the control group. CONCLUSIONS Reduced periodontal tissue support accompanies impaired regulation of masticatory forces. Faulty mechanoreceptive innervation of the periodontal ligament explains the elevated hold force, whereas a change in biting strategy due to the weakened support of the teeth may account for the more defensive food-splitting behavior.
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Alkan A, Keskiner I, Arici S, Sato S. The effect of periodontal surgery on bite force, occlusal contact area and bite pressure. J Am Dent Assoc 2006; 137:978-83; quiz 1028. [PMID: 16803824 DOI: 10.14219/jada.archive.2006.0319] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Tooth mobility resulting from the loss of periodontal support or trauma induced by periodontal surgery may change the amount of bite force (BF) and bite pressure (BP) and number of occlusal contact areas (OCAs). The aim of the authors' study was to compare BF, BP and OCA of teeth with periodontal disease before and after periodontal surgery with similar values of healthy teeth. METHODS The authors performed quantitative analysis of BF, BP and OCA using a pressure measurement film. Ten patients with periodontitis who needed periodontal surgery served as the test group. The authors took measurements of BF, BP, OCA and mobility (using Miller's Mobility Index) just before surgery and at one, four and 12 weeks after surgery. They also measured clinical attachment levels (CAL) before surgery and 12 weeks after surgery. Ten subjects without periodontitis served as the control group. RESULTS Although BF and OCA increased the first week after periodontal surgery, analysis of variance (ANOVA) showed no statistically significant differences at a 95 percent confidence interval. There were statistically significant differences between first-week mobility and that at four and 12 weeks (P = .001). A factorial ANOVA showed significant interaction between BF and mobility (P < .05). CONCLUSIONS The authors' findings suggest that changes in BF, BP and OCA were not affected by periodontal surgery. However, mean mobility values and BF are correlated. Further investigations of this measurement method involving larger study populations and a longer follow-up period are needed. CLINICAL IMPLICATIONS It seems to be helpful to follow occlusal changes after periodontal surgery using a pressure measurement film. It also may be suggested that this measurement method could be used to evaluate the treatment prognosis.
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Affiliation(s)
- Arzu Alkan
- Department of Periodontology, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
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Ellegaard B, Baelum V, Kølsen-Petersen J. Non-grafted sinus implants in periodontally compromised patients: a time-to-event analysis. Clin Oral Implants Res 2006; 17:156-64. [PMID: 16584411 DOI: 10.1111/j.1600-0501.2005.01220.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study reports the results of implant therapy involving a sinus membrane lift and of conventional implant therapy in 68 periodontally compromised patients treated between June 1990 and June 2002. Patients had at least two implants inserted, one of which was placed in the maxillary sinus region following fenestration of the lateral sinus wall and lifting of the sinus membrane. Two implant systems were used: a two-stage system (Astra) and a one-stage system (ITI). Annual follow-up visits included recording of plaque, probing pocket depth and measurement of the radiographic distance in millimeter from the implant shoulder to the alveolar crest. Survival analysis showed that the proportion of implants that had not been explanted after 5 years ranged between 88.7% for ITI sinus implants and 97% for ASTRA conventional implants. After 10 years, the proportion of implants remaining in situ ranged between 59% for ITI conventional implants and 97% for ASTRA conventional implants. Cox regression analyses showed that the factors influential for implant explantation were implant type (HR(ITI) = 2.8), implant length (HR(< or = 10 mm) = 3.1), patient being a smoker (HR(smoking) = 2.2) and patient having at least 20 natural teeth (HR(> or = 20 teeth) = 3.8). Our results demonstrate that sinus implants may be inserted with the same success as conventional implants in periodontally compromised patients.
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Affiliation(s)
- Birgit Ellegaard
- Department of Periodontology, Royal Dental College, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark.
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