1
|
Ranjan M, Singh B, Kumar S, Tushar, Rani P, Singh A. A Preliminary Report of Maximum Voluntary Bite Force of Young Indian Population. J Pharm Bioallied Sci 2024; 16:S803-S805. [PMID: 38595461 PMCID: PMC11001091 DOI: 10.4103/jpbs.jpbs_1021_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/17/2023] [Accepted: 10/23/2023] [Indexed: 04/11/2024] Open
Abstract
Introduction The measurement of bite force is increasingly gaining importance in dentistry. This preliminary report evaluates the maximum voluntary bite force (MVBF) of young healthy individuals with normal occlusion and correlates the effect of age and gender with the maximum bite force (MBF). Materials and Methods 405 participants in the age group of 18 to 40 years were selected from the outpatient department meeting inclusion and exclusion criteria. MVBF was measured with the help of a digital device called "Byte" at incisors, right first molar, and left first molar region. Results There was a strong correlation between age with bite force. Bite force increased with age. Males had more bite force than females. The posterior region had higher bite force than the anterior region. Conclusion Measurement of bite force is very important for every patient undergoing restorative treatment. The "Byte" device was found to be very efficient.
Collapse
Affiliation(s)
- Madhu Ranjan
- Associate Professor, Department of Prosthodontics and Crown and Bridge, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Bishnupati Singh
- Additional Professor, Department of Prosthodontics and Crown and Bridge, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Surender Kumar
- Associate Professor, Department of Prosthodontics and Crown and Bridge, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Tushar
- Tutor, Department of Prosthodontics and Crown and Bridge, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Priya Rani
- Tutor, Department of Prosthodontics and Crown and Bridge, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Anupama Singh
- Ex-Senior Lecturer, Department of Oral Medicine and Radiology, Darbhanga Medical College and Hospital, Bihar, India
| |
Collapse
|
2
|
Alshenaiber R, Barclay C, Silikas N. The Effect of Number and Distribution of Mini Dental Implants on Overdenture Stability: An In Vitro Study. Materials (Basel) 2022; 15:ma15092988. [PMID: 35591322 PMCID: PMC9104554 DOI: 10.3390/ma15092988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/09/2022] [Accepted: 04/16/2022] [Indexed: 02/05/2023]
Abstract
The rotational movement of mini dental implants (MDIs) overdenture disturbs the function of the prosthesis. Many dentists place more MDIs to improve the overdenture stability; however, the influence of the MDIs number and distribution on the overdenture resistance to para-axial dislodgment has not been investigated. Seven resin models simulating atrophic mandibles housed twenty MDIs placed according to seven arrangements. Acrylic overdentures were fabricated for each cast and were dislodged five times in lateral, anterior and posterior directions, and the peak load dislodgment was measured. Each overdenture underwent 540 axial removal/placement cycles. The para-axial dislodgments were measured again, and data were compared. Dislodgment force values were measured in all directions, and the data were analysed using analysis of variance ANOVA and post hoc (p < 0.05). After six months of simulated placement/removal, increasing the MDI number showed a difference in resistance to para-axial dislodgment. The distribution affected the resistance to dislodgment in some directions. The inter-implant distance of 27 mm provided better resistance to posterior dislodgment than placing two MDIs close together at 19 mm. The placement of three MDIs at any distribution showed no significant difference except for resistance to posterior dislodgment. FourMDIs placed at any distribution showed a significant difference in all groups in all tested directions. The resistance to the para-axial dislodgment of MDI overdenture could improve with the increasing MDIs number and careful planning of MDI distribution.
Collapse
Affiliation(s)
- Rafif Alshenaiber
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
- Prosthetic Dental Sciences Department, College of Dentistry, Prince Sattam Bin Abdulaziz University, AlKharj 16278, Saudi Arabia
- Correspondence: ; Tel.: +44-7477426007
| | - Craig Barclay
- Restorative Dentistry, University of Manchester Dental Hospital, Manchester M15 6FH, UK;
| | - Nick Silikas
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
| |
Collapse
|
3
|
Kruse T, Heller R, Wirth B, Glöggler J, Wurster CD, Ludolph AC, Braumann B. Maximum bite force in patients with spinal muscular atrophy during the first year of nusinersen therapy - A pilot study. Acta Myol 2020; 39:83-89. [PMID: 32904902 PMCID: PMC7460731 DOI: 10.36185/2532-1900-010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/26/2020] [Indexed: 11/29/2022]
Abstract
Objectives Spinal muscular atrophy is a monogenic disease characterized by progressive spinal and bulbar muscle weakness and atrophy. It is caused by the degeneration of alpha-motoneurons. The recent approval of the antisense oligonucleotide nusinersen highlights the need for reliable clinical tools to evaluate motor function in patients with neuromuscular disorders. Measurement of the bulbar neuromuscular function (e.g., bite force) could be an extension to existing motor scales, sensitive to more nuanced changes, especially in symptomatic patients with severely reduced functional abilities. Materials and methods Maximum bite force measurement was used to quantify changes of the masticatory function in adult monozygotic female twins with SMA type II. Using piezoelectric transducers, 550 observations were recorded for each patient during the first year of nusinersen therapy. Results During the application of four loading doses of nusinersen, bite force levels steadily increased and reached a statistically significantly higher level compared to the initial state in both patients. Subsequent maintenance doses coincided with smaller or no statistically significant changes in maximum bite force. Conclusions This pilot study indicates that the measurement of maximum bite force may be a useful tool to detect changes of the bulbar function in SMA patients. As such, it may supplement existing scales to identify treatment-related changes in motor function.
Collapse
Affiliation(s)
- Teresa Kruse
- Poliklinik für Kieferorthopädie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland.,Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland
| | - Raoul Heller
- Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland.,Institut für Humangenetik, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland
| | - Brunhilde Wirth
- Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland.,Institut für Humangenetik, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland.,Zentrum für Molekulare Genetik, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland
| | - Julia Glöggler
- Klinik für Kieferorthopädie und Orthodontie, Universitätsklinikum Ulm, Deutschland
| | | | | | - Bert Braumann
- Poliklinik für Kieferorthopädie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland.,Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Deutschland
| |
Collapse
|
4
|
Kruse T, Lehmann HC, Braumann B, Fink GR, Wunderlich G. The Maximum Bite Force for Treatment Evaluation in Severely Affected Adult SMA Patients-Protocol for a Longitudinal Study. Front Neurol 2020; 11:139. [PMID: 32161570 PMCID: PMC7052363 DOI: 10.3389/fneur.2020.00139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/07/2020] [Indexed: 11/13/2022] Open
Abstract
Spinal muscular atrophy (SMA) is a severe neuromuscular disorder characterized by the degeneration of motor neurons in the spinal cord, and comprises a broad clinical spectrum. With the advent of new therapies (e.g., Nusinersen) for patients of all ages and disease stages, sensitive clinical measures are needed to detect slight changes in muscle force even in immobilized, severely affected patients often unable to move limbs. As for these patients, well-established outcome scales set out to evaluate motor function do not work properly, we propose measurement of maximum bite force which is able to detect subtle changes of bulbar function. Requirements for this approach are mentioned, challenges are discussed, and first insights from a pilot study are presented. Finally, a study design is proposed to evaluate the measurement of maximum bite force during the follow up of SMA patients with and without a disease modifying therapy.
Collapse
Affiliation(s)
- Teresa Kruse
- Poliklinik für Kieferorthopädie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany.,Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany
| | - Helmar C Lehmann
- Klinik und Poliklinik für Neurologie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany
| | - Bert Braumann
- Poliklinik für Kieferorthopädie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany.,Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany
| | - Gereon R Fink
- Klinik und Poliklinik für Neurologie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany
| | - Gilbert Wunderlich
- Zentrum für Seltene Erkrankungen, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany.,Klinik und Poliklinik für Neurologie, Universität zu Köln, Medizinische Fakultät und Universitätsklinikum Köln, Cologne, Germany
| |
Collapse
|
5
|
Zhang X, Yuan X, Xu Q, Arioka M, Van Brunt LA, Shi Y, Brunski J, Helms JA. Molecular Basis for Periodontal Ligament Adaptation to In Vivo Loading. J Dent Res 2019; 98:331-338. [PMID: 30612508 DOI: 10.1177/0022034518817305] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A soft food diet leads to changes in the periodontal ligament (PDL). These changes, which have been recognized for more than a century, are ascribed to alterations in mechanical loading. While these adaptive responses have been well characterized, the molecular, cellular, and mechanical mechanisms underlying the changes have not. Here, we implicate Wnt signaling in the pathoetiology of PDL responses to underloading. We show that Wnt-responsive cells and their progeny in the PDL space exhibit a burst in proliferation in response to mastication. If an animal is fed a soft diet from the time of weaning, then this burst in Wnt-responsive cell proliferation is quelled; as a consequence, both the PDL and the surrounding alveolar bone undergo atrophy. Returning these animals to a hard food diet restores the Wnt signaling in PDL. These data provide, for the first time, a molecular mechanism underlying the adaptive response of the PDL to loading.
Collapse
Affiliation(s)
- X Zhang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - X Yuan
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Q Xu
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA.,3 The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, China
| | - M Arioka
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA.,4 Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - L A Van Brunt
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Y Shi
- 5 Los Altos High School, Los Altos, CA, USA
| | - J Brunski
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - J A Helms
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Palo Alto, CA, USA
| |
Collapse
|
6
|
Moon SJ, Kim HJ, Son MK, Chung CH. Sinking and fit of abutment of locking taper implant system. J Adv Prosthodont 2009; 1:97-101. [PMID: 21165262 PMCID: PMC2994685 DOI: 10.4047/jap.2009.1.2.97] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 06/18/2009] [Accepted: 06/29/2009] [Indexed: 11/20/2022] Open
Abstract
STATEMENT OF PROBLEM Unlike screw-retention type, fixture-abutment retention in Locking taper connection depends on frictional force so it has possibility of abutment to sink. PURPOSE In this study, Bicon® Implant System, one of the conical internal connection implant system, was used with applying loading force to the abutments connected to the fixture. Then the amount of sinking was measured. MATERIAL AND METHODS 10 Bicon® implant fixtures were used. First, the abutment was connected to the fixture with finger force. Then it was tapped with a mallet for 3 times and loads of 20 kg corresponding to masticatory force using loading application instrument were applied successively. The abutment state, slightly connected to the fixture without pressure was considered as a reference length, and every new abutment length was measured after each load's step was added. The amount of abutment sinking (mm) was gained by subtracting the length of abutment-fixture under each loading condition from reference length. RESULTS It was evident, that the amount of abutment sinking in Bicon® Implant System increased as loads were added. When loads of 20 kg were applied more than 5 - 7 times, sinking stopped at 0.45 ± 0.09 mm. CONCLUSION Even though locking taper connection type implant shows good adaption to occlusal force, it has potential for abutment sinking as loads are given. When locking taper connection type implant is used, satisfactory loads are recommended for precise abutment location.
Collapse
Affiliation(s)
- Seung-Jin Moon
- Graduate student, Department of Prosthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | | | | | | |
Collapse
|