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Montuelle SJ, Williams SH. Prolonged use of a soft diet during early growth and development alters feeding behavior and chewing kinematics in a young animal model. J Morphol 2024; 285:e21696. [PMID: 38639429 PMCID: PMC11177321 DOI: 10.1002/jmor.21696] [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: 01/25/2024] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/20/2024]
Abstract
In infants and children with feeding and swallowing issues, modifying solid foods to form a liquid or puree is used to ensure adequate growth and nutrition. However, the behavioral and neurophysiological effects of prolonged use of this intervention during critical periods of postnatal oral skill development have not been systematically examined, although substantial anecdotal evidence suggests that it negatively impacts downstream feeding motor and coordination skills, possibly due to immature sensorimotor development. Using an established animal model for infant and juvenile feeding physiology, we leverage X-ray reconstruction of moving morphology to compare feeding behavior and kinematics between 12-week-old pigs reared on solid chow (control) and an age- and sex-matched cohort raised on the same chow softened to a liquid. When feeding on two novel foods, almond and apple, maintenance on a soft diet decreases gape cycle duration, resulting in a higher chewing frequency. When feeding on almonds, pigs in this group spent less time ingesting foods compared to controls, and chewing cycles were characterized by less jaw rotation about a dorsoventral axis (yaw) necessary for food reduction. There was also a reduced tendency to alternate chewing side with every chew during almond chewing, a behavioral pattern typical of pigs. These more pronounced impacts on behavior and kinematics during feeding on almonds, a tougher and stiffer food than apples, suggest that food properties mediate the behavioral and physiological impacts of early texture modification and that the ability to adapt to different food properties may be underdeveloped. In contrast, the limited effects of food texture modification on apple chewing indicate that such intervention/treatment does not alter feeding behavior of less challenging foods. Observed differences cannot be attributed to morphology because texture modification over the treatment period had limited impact on craniodental growth. Short-term impacts of soft-texture modification during postweaning development on feeding dynamics should be considered as potential negative outcomes of this treatment strategy.
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Affiliation(s)
- Stéphane J. Montuelle
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Warrensville Heights, OH 44122
| | - Susan H. Williams
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, OH 45701
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2
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Remesz R, Khurelbaatar T, Rabey KN, Doschak MR, Romanyk DL. Three-dimensional morphometric analysis of cranial sutures - A novel approach to quantitative analysis. Bone Rep 2023; 19:101714. [PMID: 37767331 PMCID: PMC10520544 DOI: 10.1016/j.bonr.2023.101714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/16/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Objective Differences in complexity of cranial suture forms on the endocranial (i.e., deep) and ectocranial (i.e., superficial) skull surfaces have been noted in the literature, indicating through thickness three-dimensional (3D) suture variability depending on the chosen section and necessity for considering the complete 3D structure in many cases. This study aims to evaluate the variability of suture morphology through the skull thickness using a rat model, and to provide more robust metrics and methodologies to analyze suture morphology. Design X-ray micro-computed tomographic (μCT) imaging methods were utilized in order to provide internal structure information. Methods were developed to isolate and analyze sutures widths and linear interdigitation index (LII) values on each adjacent offset transverse plane of the μCT datasets. LII was defined as the curved path length of the suture divided by the linear length between the ends of the region of interest. Scans were obtained on 15 female rats at ages of 16, 20, and 24 weeks (n = 5/age). Samples were imaged at 18 μm resolutions with 90 kV source voltage, 278 μA source amperage, and 0.7° increments. Suture widths and LII values were compared using a Kruskal-Wallis test. Results 3D variability in local suture widths within individuals, as well as through thickness variabilities in planar widths and LII was observed. Kruskal-Wallis tests for bulk through thickness averaged suture widths and LII were found to be statistically insignificant, despite clear geometric differences through suture thicknesses. Conclusion Although the bulk morphometric variability between age groups was found to be statistically insignificant, the 3D variability within individuals point to the importance of analyzing suture form using 3D metrics when studying suture development, response to functional activity, or morphometry in general.
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Affiliation(s)
- Ross Remesz
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
| | | | - Karyne N. Rabey
- Division of Anatomy, Department of Surgery, University of Alberta, Edmonton, AB, Canada
- Department of Anthropology, University of Alberta, Edmonton, AB, Canada
| | - Michael R. Doschak
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
| | - Dan L. Romanyk
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
- School of Dentistry, University of Alberta, Edmonton, AB, Canada
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3
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Guerrero Vargas JA, Carvalho Trojan L, de Las Casas EB, Garzón Alvarado DA. Finite element analysis of the influence of interdigitation pattern and collagen fibers on the mechanical behavior of the midpalatal suture. Med Biol Eng Comput 2023; 61:2367-2377. [PMID: 37076651 DOI: 10.1007/s11517-023-02838-7] [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: 10/26/2022] [Accepted: 04/06/2023] [Indexed: 04/21/2023]
Abstract
The midpalatal suture (MPS) corresponds to the tissue that joins the two maxillary bones. Understanding the mechanical behavior of this tissue is of particular interest to those patients who require orthodontic treatments such as Rapid Maxillary Expansion (RME). The objective of this research was to observe the influence of interdigitation and collagen fibers on the mechanical response of MPS. To this end, a finite element analysis in two-dimensional models of the bone-suture-bone interface was performed considering the characteristics of the MPS. The geometry of the suture was modeled with 4 different levels of interdigitation: null, moderate, scalloped and fractal. The influence of collagen fibers, aligned transversely along the suture, was considered by incorporating linked structures of the bone fronts. According to the results, the factor that has the greatest impact on the magnitude and distribution of stresses is the interdigitation degree. A higher level of interdigitation produces an increase in tissue stiffness and a lower influence of collagen fibers on the mechanical response of the tissue. Therefore, this research contributes to the understanding of the MPS biomechanics by providing information that may be useful to health staff when evaluating the feasibility of procedures such as RME.
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Affiliation(s)
- J A Guerrero Vargas
- Department of Mechanical Engineering, Faculty of Engineering, Universidad ECCI, Vicerrectoría de Investigación, Carrera 19 No 49-20 Sede P, Bogotá, Colombia.
| | - L Carvalho Trojan
- Department of Structural Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - E Barbosa de Las Casas
- Department of Structural Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D A Garzón Alvarado
- Department of Mechanical and Mechatronic Engineering, Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia
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4
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Wang B, Nguyen N, Kang M, Srirangapatanam S, Connelly S, Souza R, Ho SP. Contact ratio and adaptations in the maxillary and mandibular dentoalveolar joints in rats and human clinical analogs. J Mech Behav Biomed Mater 2022; 136:105485. [PMID: 36209587 DOI: 10.1016/j.jmbbm.2022.105485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 11/19/2022]
Abstract
Spatial maps of function-based contact areas and resulting mechanical strains in bones of intact fibrous joints in preclinical small-scale animal models are limited. Functional imaging in situ on intact dentoalveolar fibrous joints (DAJs) in hemimandibles and hemimaxillae harvested from 10 male Sprague-Dawley rats (N = 5 at 12 weeks, N = 5 at 20 weeks) was performed in this study. Physical features including bone volume fraction (BVF), bone pore diameter and pore density, and cementum fraction (CF) of the molars in the maxillary and mandibular joints were evaluated. Biomechanical testing in situ provided estimates of joint stiffness, changes in periodontal ligament spaces (PDL-space) between the molar and bony socket, and thereby localization of contact area in the respective joints. Contact area localization revealed mechanically stressed interradicular and apical regions in the joints. These anatomy-specific contact stresses in maxillary and mandibular joints were correlated with the physical features and resulting strains in interradicular and bony socket compartments. The mandibular joint spaces, in general, were higher than maxillary, and this trend was consistent with age (younger loaded: Mn - 134 ± 55 μm, Mx - 110 ± 47 μm; older loaded: Mn - 122 ± 49 μm, Mx - 105 ± 48 μm). However, a significant decrease (P < 0.05) in mandibular and maxillary joint spaces with age (younger unloaded: Mn - 147 ± 51 μm; Mx - 125 ± 42 μm; older unloaded: Mn - 134 ± 46 μm; Mx - 116 ± 44 μm) was observed. The bone volume fraction (BVF) of mandibular interradicular bone (IR bone) increased significantly with age (P < 0.05) with the percent porosity of coronal mandibular bone lower than its maxillary counterpart. The contact ratio (contact area to total surface area) of maxillary teeth was significantly greater (P < 0.05) than mandibular teeth; both maxillary interradicular and apical contact ratios (IR bone: 41%, 56%; Apical bone: 4%, 12%) increased with age, and were higher than the mandibular (IR bone: 19%, 44%; Apical bone: 1%, 4%) counterpart. Resulting higher but uniform strains in maxillary bone contrasted with lower but higher variance in mandibular strains at a younger age. Anatomy-specific colocalization of physical properties and functional strains in bone provided insights into form-guided adaptive dominance of the maxilla compared to material property-guided adaptive dominance of the mandible. These age-related trends from the preclinical animal model paralleled with age- and tooth position-specific variabilities in mandibular craniofacial bones of adolescent and adult patients following orthodontic treatment.
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Affiliation(s)
- Bo Wang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116023, PR China; International Research Center for Computational Mechanics, Dalian University of Technology, Dalian, 116023, PR China; Ningbo Institute of Dalian University of Technology, Ningbo, 315016, PR China; DUT-BSU Joint Institute, Dalian University of Technology, 116023, PR China; Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | - Nam Nguyen
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | - Misun Kang
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | | | - Stephen Connelly
- Division of Oral Surgery, Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, CA, 94143, USA
| | - Richard Souza
- Departments of Physical Therapy and Rehabilitation Science, Radiology and Biomedical Orthopaedic Surgery, School of Medicine, University of California San Francisco, CA, 94143, USA
| | - Sunita P Ho
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA.
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5
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Impact of Diet Consistency on the Mandibular Morphology: A Systematic Review of Studies on Rat Models. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052706. [PMID: 35270398 PMCID: PMC8910531 DOI: 10.3390/ijerph19052706] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023]
Abstract
Apart from genetics, environmental factors, such as food consistency, may affect craniofacial morphology and development. The present systematic review aims to systematically investigate and appraise the available evidence regarding the effect of diet consistency on the anatomical structures of the basal bone of the rat mandible. The search was performed without restrictions in five databases (PubMed, Scopus, Web of Science, ProQuest Dissertations and Theses Global, including grey literature) and hand searching through January 2022. A total of 14,904 references were initially identified, and 16 articles were finally included in the systematic review. Rats that consumed hard diets were found to exhibit an increase inbigonial width, corpus height, condylar depth, condylar base inclination, condylar process inclination, mandibular plane inclination, height and length of angular process, mandibular body height, depth of antegonial notch, growth rate in the gonial angle, angular process convexity and height of condylar process. It was also noted that mandibular depth, mandibular height, ramus angle and angle between the angular process and mandibular plane were decreased in rats that were fed with a hard diet. On the other hand, there were conflicting results about the growth of mandibular length and width, corpus length, mandibular body length, ramus height, condylar length and width, gonial angle and height of coronoid process. From the abovementioned results, it can be concluded that food consistency may affect the morphology of anatomical structures and the overall growth and development of rat mandibles in various ways.
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Cheronet O, Ash A, Anders A, Dani J, Domboróczki L, Drozdova E, Francken M, Jovanovic M, Milasinovic L, Pap I, Raczky P, Teschler-Nicola M, Tvrdý Z, Wahl J, Zariņa G, Pinhasi R. Sagittal suture morphological variation in human archaeological populations. Anat Rec (Hoboken) 2021; 304:2811-2822. [PMID: 33773064 PMCID: PMC9291749 DOI: 10.1002/ar.24627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/10/2022]
Abstract
Cranial sutures join the many bones of the skull. They are therefore points of weakness and consequently subjected to the many mechanical stresses affecting the cranium. However, the way in which this impacts their morphological complexity remains unclear. We examine the intrinsic and extrinsic mechanisms of human sagittal sutures by quantifying the morphology from 107 individuals from archaeological populations spanning the Mesolithic to Middle ages, using standardized two‐dimensional photographs. Results show that the most important factor determining sutural complexity appears to be the position along the cranial vault from the junction with the coronal suture at its anterior‐most point to the junction with the lambdoid suture at its posterior‐most point. Conversely, factors such as age and lifeways show few trends in complexity, the most significant of which is a lower complexity in the sutures of Mesolithic individuals who consumed a tougher diet. The simple technique used in this study therefore allowed us to identify that, taken together, structural aspects play a more important role in defining the complexity of the human sagittal suture than extrinsic factors such as the mechanical forces imposed on the cranium by individuals' diet.
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Affiliation(s)
- Olivia Cheronet
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Abigail Ash
- Department of Archaeology, University of York, York, UK
| | - Alexandra Anders
- Institute of Archeological Sciences, Eötvös Loránd University, Budapest, Hungary
| | | | | | - Eva Drozdova
- Department of Experimental Biology, Section of Genetics and Molecular Biology, Laboratory of Biological and Molecular Anthropology, Faculty of Science, Masaryk Univerzity, Brno, Czech Republic
| | - Michael Francken
- Osteology, State Office for Cultural Heritage Baden-Wuerttemberg, Constance, Germany
| | | | | | - Ildiko Pap
- Department of Anthropology, Hungarian Natural History Museum, Budapest, Hungary
| | - Pál Raczky
- Institute of Archeological Sciences, Eötvös Loránd University, Budapest, Hungary
| | - Maria Teschler-Nicola
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria.,Department of Anthropology, Natural History Museum Vienna, Vienna, Austria
| | - Zdeněk Tvrdý
- Anthropos Institute, Moravian Museum, Brno, Czech Republic
| | - Joachim Wahl
- Institut für Naturwissenschaftliche Archäologie Abteilung Paläoanthropologie, University of Tübingen, Tübingen, Germany
| | - Gunita Zariņa
- University of Latvia, Institute of Latvian History, Riga, Latvia
| | - Ron Pinhasi
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
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7
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Savoldi F, Tsoi JKH, Paganelli C, Matinlinna JP. Sutural Morphology in the Craniofacial Skeleton: A Descriptive Microcomputed Tomography Study in a Swine Model. Anat Rec (Hoboken) 2019; 302:2156-2163. [DOI: 10.1002/ar.24230] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/16/2019] [Accepted: 05/17/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Fabio Savoldi
- Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of DentistryThe University of Hong Kong, Prince Philip Dental Hospital Sai Ying Pun Hong Kong
- Department of Orthodontics, Dental SchoolUniversity of Brescia Brescia Italy
| | - James K. H. Tsoi
- Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of DentistryThe University of Hong Kong, Prince Philip Dental Hospital Sai Ying Pun Hong Kong
| | - Corrado Paganelli
- Department of Orthodontics, Dental SchoolUniversity of Brescia Brescia Italy
| | - Jukka P. Matinlinna
- Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of DentistryThe University of Hong Kong, Prince Philip Dental Hospital Sai Ying Pun Hong Kong
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8
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Guerrero-Vargas JA, Silva TA, Macari S, de Las Casas EB, Garzón-Alvarado DA. Influence of interdigitation and expander type in the mechanical response of the midpalatal suture during maxillary expansion. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2019; 176:195-209. [PMID: 31200906 DOI: 10.1016/j.cmpb.2019.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/02/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND AND OBJECTIVE The orthopedic Maxillary Expansion (ME) procedure is used for treating the transverse maxillary deficiency. This pathology consists in a smaller transverse dimension in the maxilla and leads to malocclusion. The treatment takes advantage of the existence of the midpalatal suture (MPS), which corresponds to the junction at the palatine bones of its horizontal portions. The technique employs a device, conventionally a palatal expander attached to the posterior teeth, to separate the two maxillary bones in the MPS. The objective of this study was to analyze, using the Finite Element Method, the biomechanical behavior of the MPS when an expansion is applied. METHODS A Computer Tomography image of the maxilla was reconstructed, the suture geometry was modeled with different interdigitation levels and types of hyrax devices. A total of 12 geometric models (three levels for interdigitation and four types of hyrax devices) were prepared and analyzed taking into account the chewing forces and the expansion displacement. For each case, maximum principal stresses on the maxilla (bone), and equivalent stresses on the expander device (stainless steel) were observed. In the MPS, maximum principal stresses and directional displacement were evaluated. RESULTS The results showed that the interdigitation does not have an important influence on the deformation behavior of the maxilla but it affects the stress distribution. In addition, the type of expander device and anchorage have a direct relationship with the treatment effectiveness; larger deformation in the expansion direction was obtained with skeletal when compared to dental anchorage. CONCLUSIONS A study that allows a better understanding of the oral biomechanics during the application of ME was presented. To our knowledge, it is the first study based on computational simulations that takes into account bone structures, like maxilla and part of the skull, to analyze the interdigitation influence on the MPS behavior when exposed to a ME.
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Affiliation(s)
- J A Guerrero-Vargas
- Department of Mechanical and Mechatronic Engineering, Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia; Department of Mechanical Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Mechanical Engineering, Faculty of Engineering, Universidad ECCI, Bogotá, Colombia.
| | - T A Silva
- Department of Clinical, Pathology and Dental Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - S Macari
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - E B de Las Casas
- Department of Structural Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D A Garzón-Alvarado
- Department of Mechanical and Mechatronic Engineering, Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia
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Tsai CY, Wang CW, Chang CW. Effects of masticatory muscle function affected by BTX on maxillofacial bone growth through the sutural modification. Orthod Craniofac Res 2019; 22:112-117. [PMID: 30657256 DOI: 10.1111/ocr.12290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To evaluate the effect of botulinum toxin type A (BTX)-induced masticatory muscle hypofunction on the maxillofacial suture bone growth of growing rats. SETTING AND SAMPLE POPULATION Department of Orthodontics at Taipei Medical University. Forty-eight male 4-week-old Wistar rats were divided into four groups. The N group received injections of normal saline into each of the masseter and temporalis muscles. The M group received injections of normal saline into each of the temporalis muscle and injections of BTX into each of the masseter muscle. The T group received injections of normal saline into each of the masseter muscle and injections of BTX into each of the temporalis muscle. The MT group received injections of BTX into each of the masseter and temporalis muscles. MATERIAL & METHODS Rats were sacrificed after 42 days of growth. Changes in body and muscle weight were measured. Anthropometric measurements of the maxillary arch, sutural bone mineral density and sutural bone deposition distances were recorded. Statistical comparisons were performed using analysis of variance. RESULTS No significant change in body weight was found across groups. However, significant decreases were observed in muscle weight, anthropometric measurements, sutural bone mineral density and bone apposition distance in the BTX-injected group. CONCLUSIONS Reduced masticatory muscle function in growing rats can affect maxillofacial suture bone growth.
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Affiliation(s)
- Chi Yang Tsai
- Division of Orthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.,Graduate Institute of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Wei Wang
- Division of Orthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.,Graduate Institute of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chiung-Wen Chang
- Division of Orthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.,Graduate Institute of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
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10
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Association of feeding behavior with jaw bone metabolism and tongue pressure. JAPANESE DENTAL SCIENCE REVIEW 2018; 54:174-182. [PMID: 30302136 PMCID: PMC6175966 DOI: 10.1016/j.jdsr.2018.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/12/2018] [Accepted: 05/23/2018] [Indexed: 12/26/2022] Open
Abstract
In recent decades, the eating habits of children and adolescents have undergone many changes due to the diversification of lifestyles worldwide. Reduced masticatory function in growing animals results in changes in the mandible, including a decrease in bone mass. However, the influence of different eating behaviors on jaw bone metabolism (e.g., the palatal palate) during the growth period is not fully understood. In addition, recent clinical studies reported that masticatory performance is positively related to tongue pressure in adults, but no consensus has been reached regarding whether tongue pressure is related to masticatory performance in children. This review summarizes current findings related to these issues, focusing on the influence of different feeding behaviors on jaw bone metabolism, including the development of tongue pressure. Consumption of a soft diet had a negative impact on jaw bone metabolism in the maxilla and mandible of rats; however, mastication of a hard diet recovered the collapsed equilibrium of bone turnover caused by a soft diet during growth. Tongue pressure is closely associated with an increase in masticatory performance in children. Peak maximum tongue pressure is reached earlier in women than in men. Before reaching adulthood, women require intervention to increase their peak tongue pressure.
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11
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Savoldi F, Xu B, Tsoi JKH, Paganelli C, Matinlinna JP. Anatomical and mechanical properties of swine midpalatal suture in the premaxillary, maxillary, and palatine region. Sci Rep 2018; 8:7073. [PMID: 29728631 PMCID: PMC5935669 DOI: 10.1038/s41598-018-25402-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 04/19/2018] [Indexed: 11/09/2022] Open
Abstract
The mechanical properties of the midpalatal suture and their relationship with anatomical parameters are relevant for both tissue engineering and clinical treatments, such as in sutural distraction osteogenesis. Soft tissues were dissected from ten swine heads and the hard palate was sliced perpendicularly to the midpalatal suture. Thirteen specimens were collected from each animal and analysed with micro-computed tomography and 4-point-bending for sutural width (Sw), interdigitation (LII), obliteration (LOI), failure stress (σ f ), elastic modulus (E), and bone mineral density (BMD). Values of the premaxillary, maxillary, and palatine region were compared with Kruskal-Wallis one-way ANOVA and Spearman's rank coefficient was used to analyse the correlation between parameters and their position along the suture (α = 0.05). LII had values of 1.0, 2.9, and 4.3, LOI had values of 0.0%, 2.5%, and 4.5%, and E had values of 12.5 MPa, 31.3 MPa, and 98.5 MPa, in the premaxillary, maxillary, and palatine region, respectively (p < 0.05). Failure stress and rigidity of the midpalatal suture increased from rostral to caudal, due to greater interdigitation and obliteration. These anatomical and mechanical findings contribute to characterise maxillary growth, and may help to understand its mechanical reaction during loading, and in virtual simulations.
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Affiliation(s)
- Fabio Savoldi
- Dental Materials Science, Discipline of Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Pok Fu Lam, Hong Kong.,Department of Orthodontics, Dental School, University of Brescia, Brescia, Italy.,Orthodontics, Faculty of Dentistry, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Bing Xu
- Dental Materials Science, Discipline of Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Pok Fu Lam, Hong Kong.,Dental Department, The University of Hong Kong-Shenzhen Hospital, Shenzhen, P.R. China
| | - James K H Tsoi
- Dental Materials Science, Discipline of Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Pok Fu Lam, Hong Kong.
| | - Corrado Paganelli
- Department of Orthodontics, Dental School, University of Brescia, Brescia, Italy
| | - Jukka P Matinlinna
- Dental Materials Science, Discipline of Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Pok Fu Lam, Hong Kong
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12
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Franks EM, Holton NE, Scott JE, McAbee KR, Rink JT, Pax KC, Pasquinelly AC, Scollan JP, Eastman MM, Ravosa MJ. Betwixt and Between: Intracranial Perspective on Zygomatic Arch Plasticity and Function in Mammals. Anat Rec (Hoboken) 2017; 299:1646-1660. [PMID: 27870345 DOI: 10.1002/ar.23477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 06/04/2016] [Accepted: 06/22/2016] [Indexed: 01/01/2023]
Abstract
The zygomatic arch is morphologically complex, providing a key interface between the viscerocranium and neurocranium. It also serves as an attachment site for masticatory muscles, thereby linking it to the feeding apparatus. Though morphological variation related to differential loading is well known for many craniomandibular elements, the adaptive osteogenic response of the zygomatic arch remains to be investigated. Here, experimental data are presented that address the naturalistic influence of masticatory loading on the postweaning development of the zygoma and other cranial elements. Given the similarity of bone-strain levels among the zygoma and maxillomandibular elements, a rabbit and pig model were used to test the hypothesis that variation in cortical bone formation and biomineralization along the zygomatic arch and masticatory structures are linked to increased stresses. It was also hypothesized that neurocranial structures would be minimally affected by varying loads. Rabbits and pigs were raised for 48 weeks and 8 weeks, respectively. In both experimental models, CT analyses indicated that elevated masticatory loading did not induce differences in cortical bone thickness of the zygomatic arch, though biomineralization was positively affected. Hypotheses were supported regarding bone formation for maxillomandibular and neurocranial elements. Varying osteogenic responses in the arch suggests that skeletal adaptation, and corresponding variation in performance, may reside differentially at one level of bony architecture. Thus, it is possible that phenotypic diversity in the mammalian zygoma is due more singularly to natural selection (vs. plasticity). These findings underscore the complexity of the zygomatic arch and, more generally, determinants of skull form. Anat Rec, 299:1646-1660, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Erin M Franks
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Nathan E Holton
- Department of Orthodontics, The University of Iowa, Iowa City, Iowa.,Department of Anthropology, The University of Iowa, Iowa City, Iowa
| | - Jeremiah E Scott
- Department of Anthropology, Southern Illinois University, Carbondale, Illinois
| | - Kevin R McAbee
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Jason T Rink
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Kazune C Pax
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Adam C Pasquinelly
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Joseph P Scollan
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Meghan M Eastman
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana
| | - Matthew J Ravosa
- Department of Biological Sciences, The University of Notre Dame, Notre Dame, Indiana.,Department of Aerospace and Mechanical Engineering, The University of Notre Dame, Notre Dame, Indiana.,Department of Anthropology, The University of Notre Dame, Notre Dame, Indiana
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Buezas G, Becerra F, Vassallo A. Cranial suture complexity in caviomorph rodents (Rodentia; Ctenohystrica). J Morphol 2017; 278:1125-1136. [DOI: 10.1002/jmor.20699] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 03/15/2017] [Accepted: 04/19/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Guido Buezas
- Departamento de Biología; IIMyC, Universidad Nacional de Mar del Plata; Mar del Plata Argentina
| | - Federico Becerra
- Departamento de Biología; IIMyC, Universidad Nacional de Mar del Plata; Mar del Plata Argentina
- Max Planck Weizmann Center for Integrative Archaeology and Anthropology, Max Planck Institute for Evolutionary Anthropology; Leipzig Germany
| | - Aldo Vassallo
- Departamento de Biología; IIMyC, Universidad Nacional de Mar del Plata; Mar del Plata Argentina
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Jiang L, Xie Y, Wei L, Zhou Q, Li N, Jiang X, Gao Y. iTRAQ-based quantitative proteomic analysis on differentially expressed proteins of rat mandibular condylar cartilage induced by reducing dietary loading. Front Med 2017; 11:97-109. [DOI: 10.1007/s11684-016-0496-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 09/13/2016] [Indexed: 12/24/2022]
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15
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de Souza BS, Bichara LM, Guerreiro JF, Quintão CCA, Normando D. Occlusal and facial features in Amazon indigenous: An insight into the role of genetics and environment in the etiology dental malocclusion. Arch Oral Biol 2015; 60:1177-86. [DOI: 10.1016/j.archoralbio.2015.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 03/31/2015] [Accepted: 04/15/2015] [Indexed: 10/23/2022]
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16
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Mensink G, Gooris P, Bergsma J, Wes J, van Merkesteyn J. Bilateral sagittal split osteotomy in cadaveric pig mandibles: evaluation of the lingual fracture line based on the use of splitters and separators. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:281-6. [DOI: 10.1016/j.oooo.2013.03.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 02/21/2013] [Accepted: 03/25/2013] [Indexed: 11/17/2022]
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Abstract
Abstract
Objective:
To evaluate the role of genetics and tooth wear in the etiology of dental crowding through the analysis of a split indigenous Amazon population.
Materials and Methods:
Dental crowding prevalence (n = 117), tooth wear (n = 117), and inbreeding coefficient (n = 288) were compared for both villages. A biometric investigation was performed by dental cast analysis of 55 individuals with no tooth loss. Mann-Whitney statistics, independent t-tests, and Fisher exact tests were used at P < .05.
Results:
A high coefficient of inbreeding was confirmed in the resultant village (F = 0.25, P < .001). Tooth wear was not significantly different (P = .99), while a significantly higher prevalence of dental crowding was confirmed in the original village (PR = 6.67, P = 0.02). Forty dental arches (n = 20) were examined in the new group, and only one (2.5%) had a dental crowding ≥5 mm. In the original villages, we found 20 arches (28.6%) with dental crowding. No difference was observed for tooth size, while larger dental arch dimensions explained a lower level of dental crowding in the resultant village.
Conclusions:
Our findings downplay the widespread influence of tooth wear, a direct evidence of what an individual ate in the past, on dental crowding and emphasize the role of heredity, exacerbated through inbreeding, in the etiology of this malocclusion.
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Affiliation(s)
- David Normando
- Assistant Professor, Department of Orthodontics, Federal University of Pará, Faculty of Dentistry, Belém, Brazil
| | - Marco A. O. Almeida
- Chairman, Department of Orthodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cátia C. A. Quintão
- Assistant Professor, Department of Orthodontics, State University of Rio de Janeiro- UERJ, Rio de Janeiro, Brazil
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Mavropoulos A, Odman A, Ammann P, Kiliaridis S. Rehabilitation of masticatory function improves the alveolar bone architecture of the mandible in adult rats. Bone 2010; 47:687-92. [PMID: 20601301 DOI: 10.1016/j.bone.2010.06.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Revised: 06/19/2010] [Accepted: 06/22/2010] [Indexed: 11/19/2022]
Abstract
Masticatory functional changes have been shown to influence the quantity and quality of the alveolar bone during growth. This study was designed to investigate the effect of masticatory function rehabilitation on the morphology and the trabecular architecture of the mandibular alveolar bone after cessation of growth. Forty-four Sprague-Dawley male rats received soft diet in order to develop masticatory muscle hypofunction. After 21 weeks, after cessation of growth, the animals were divided into two groups: the first group continued receiving soft diet for six more weeks (hypofunction group), while the second group changed to ordinary (hard) diet with the aim to restore a normal masticatory function (rehabilitation group). A third group of 16 male rats (normal group) received ordinary (hard) diet during the whole experimental period and served as control. Micro-tomographic histomorphometry was used to evaluate the architecture of the mandibular alveolar bone (e.g. bone volume fraction, trabecular thickness, trabecular separation, etc.) at the end of the experiment (27 weeks). The height and width of the alveolar process were measured as well. The alveolar process trabecular bone volume fraction (BV/TV) was lower for the animals of the hypofunctional group as compared to those of the normal (p<0.01) and the rehabilitation (p<0.05) groups. Despite the significant improvement observed in the rehabilitation group, their BV/TV was lower in comparison to the normal group (p<0.05) at the end of this experiment. All the other micro-tomographic parameters followed the same pattern of change between groups; values of the rehabilitation group were between the values of the two other groups, differing significantly from both of them. The alveolar process was significantly shorter in the normal group in comparison to both the hypofunctional and rehabilitation groups (p<0.05). On the other hand, both the normal and rehabilitation groups were had a wider alveolar process than the hypofunctional group (p<0.05). Both alveolar height and width were significantly correlated with all micro-tomographic parameters under study. The rehabilitation of masticatory function led to a significant improvement of alveolar bone architecture in adult rats, although the negative effects of hypofunction were not totally reversed during the period under study.
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Affiliation(s)
- Anestis Mavropoulos
- University of Geneva, School of Dentistry, Department of Orthodontics, Geneva, Switzerland.
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