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González-Gil D, Dib-Zaitum I, Flores-Fraile J, López-Marcos J. Importance of Osseoperception and Tactile Sensibility during Masticatory Function in Different Prosthetic Rehabilitations: A Review. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58010092. [PMID: 35056400 PMCID: PMC8782027 DOI: 10.3390/medicina58010092] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 12/03/2022]
Abstract
Background and Objectives: Tactile sensibility is an important characteristic for evaluating the masticatory efficiency in different occlusal situations. When a tooth is extracted, relevant proprioceptors from the periodontal ligament get lost; and after the rehabilitation of this abscess by means of oral prosthesis, this sensibility decreases influencing masticatory function. Osseoperception is a sensitive phenomenon associated with dental implants that allows an increased tactile sensibility to those wearing implant prostheses. The purpose of this study was to determine the difference in tactile sensibility values between implant prosthesis, complete dentures, and natural teeth through a review of the available literature. Materials and Methods. In order to dissect the information, 24 articles from 2004 to 2021 were analyzed from MEDLINE, PubMed Central, and Web of Science databases. These articles were directly related to measuring tactile sensibility in different situations and demonstrating the influence of osseoperception in an improved masticatory function. Results: Tactile sensibility in implant prosthesis is slightly reduced compared with natural dentition but presents improved values with regard to complete dentures. Conclusions: Implant prosthesis are more effective during masticatory function than complete dentures, as they present an increased tactile sensibility, very similar to that present in natural dentition. This enhanced sensibility in implants is due to the osseoperception phenomenon.
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Almotairy N, Kumar A, Welander N, Grigoriadis A. Age-related changes in oral motor-control strategies during unpredictable load demands in humans. Eur J Oral Sci 2020; 128:299-307. [PMID: 32749023 DOI: 10.1111/eos.12721] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/04/2020] [Accepted: 06/19/2020] [Indexed: 11/29/2022]
Abstract
To investigate age-related changes in oral motor strategies in response to unpredictable load demands. Sixty-five healthy children (aged 3-17 yr) were divided into five age-groups based on their dental eruption stages and compared with a group of healthy adults (aged 18-35 yr). Each participant was asked to perform a standardized motor control task involving 'pulling' and 'holding' a force transducer with the anterior teeth. Different loads were attached to the force transducer in an unpredictable manner. The temporal force profile was divided into two time-segments (an initial segment and a later segment). The peak force and peak force rate during the initial time-segment, and the holding force and intra-trial variability (coefficient of variation) during the later time-segment, were measured. The results showed no differences in the peak force, peak force rate, holding force, and force variability in children compared with adults. However, the trends in the data evaluated using a segmented regression analysis showed that a breakpoint (abrupt change) consistently occurred in the late-mixed dentition group (age 9-11 yr) for most of the outcome variables. The results indicate that while the motor control strategies in children appear to be similar to those in adults, there is a shift in the oral motor developmental trend during the late-mixed dentition stage.
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Affiliation(s)
- Nabeel Almotairy
- Unit of Oral Rehabilitation, Department of Dental Medicine, Division of Oral Diagnostics and Rehabilitation, Karolinska Institutet, Stockholm, Sweden.,SCON, Scandinavian Center for Orofacial Neurosciences, Huddinge, Sweden.,Department of Preventive Dentistry, Division of Orthodontics, Qassim University, Buraidah, Saudi Arabia
| | - Abhishek Kumar
- Unit of Oral Rehabilitation, Department of Dental Medicine, Division of Oral Diagnostics and Rehabilitation, Karolinska Institutet, Stockholm, Sweden.,SCON, Scandinavian Center for Orofacial Neurosciences, Huddinge, Sweden
| | - Nadia Welander
- Unit of Oral Rehabilitation, Department of Dental Medicine, Division of Oral Diagnostics and Rehabilitation, Karolinska Institutet, Stockholm, Sweden
| | - Anastasios Grigoriadis
- Unit of Oral Rehabilitation, Department of Dental Medicine, Division of Oral Diagnostics and Rehabilitation, Karolinska Institutet, Stockholm, Sweden.,SCON, Scandinavian Center for Orofacial Neurosciences, Huddinge, Sweden
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Almotairy N, Kumar A, Grigoriadis A. Effect of food hardness on chewing behavior in children. Clin Oral Investig 2020; 25:1203-1216. [PMID: 32613432 PMCID: PMC7878268 DOI: 10.1007/s00784-020-03425-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/19/2020] [Indexed: 11/28/2022]
Abstract
Objective To investigate the effects of food hardness on chewing behavior in children compared with adults. Materials and methods Healthy children (3–17 years) were equally divided into five groups based on their dental eruption stages. Each participant ate soft and hard viscoelastic test food models (3 each), while the three-dimensional jaw movements and electromyographic (EMG) activity of the bilateral masseter muscles were recorded. The data from the children were compared with a control group of healthy adults (18–35 years). The data were analyzed with nonparametric tests. Results There was no significant difference in the number of chewing cycles and the duration of the chewing sequence between children groups and adults. Children with primary dentition (3–5 years) showed shorter lateral jaw movement and higher muscle activity at the end of the chewing sequence, compared with adults. Further, children’s age-groups (3–14 years) failed to adapt their jaw muscle activity to food hardness. However, at the late-permanent dentition stage (15–17 years), children were capable of performing adult-like chewing behavior. Conclusions Overall, it seems that children as young as 3-year-old are quite competent in performing basic chewing function similar to adults. Yet, there are differences in the anticipation or adaption of jaw muscle activity and jaw kinematics to food hardness. Clinical relevance The study may have clinical implication in the diagnosis and management of children with chewing impairment associated with dental malocclusions and other orofacial dysfunctions.
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Affiliation(s)
- Nabeel Almotairy
- Unit of Oral Rehabilitation, Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4064, Alfred Nobels Allé 8, 141 04, Huddinge, Sweden. .,Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraidah, Saudi Arabia.
| | - Abhishek Kumar
- Unit of Oral Rehabilitation, Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4064, Alfred Nobels Allé 8, 141 04, Huddinge, Sweden
| | - Anastasios Grigoriadis
- Unit of Oral Rehabilitation, Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4064, Alfred Nobels Allé 8, 141 04, Huddinge, Sweden
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Developmental and age-related changes in sensorimotor regulation of biting maneuvers in humans. Physiol Behav 2020; 219:112845. [DOI: 10.1016/j.physbeh.2020.112845] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/29/2020] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
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Manns A, Rojas V, Van Diest N, Rojas D, Sampaio C. Comparative study of molar and incisor bite forces regarding deciduous, mixed, and definitive dentition. Cranio 2020; 40:373-380. [PMID: 32114958 DOI: 10.1080/08869634.2020.1732569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To compare maximum incisor (MBFinc) and molar (MBFmol) bite forces regarding the type of dentition and sex and to establish a relationship between them. METHODS One hundred-five individuals were divided into 3 groups: G1 - 22 females/13 males (4-5 years); G2 - 15 females/20 males (11-12 years); and G3 - 16 females/19 males (17- 18 years). The maximum bite force was recorded with an extraoral measuring device. Three measurements were recorded: right and left molar level (MBFmol) and incisor level (MBFinc). The ratio %MBFinc/MBFmol was determined. RESULTS MBFmol and MBFinc values increased with age (p < 0.05). MBFmol showed statistically higher values than MBFinc (p < 0.05), when compared within the same group. CONCLUSION MBFinc and MBFmol increased with age. For all groups, MBFmol showed higher values than MBFinc, and %MBFinc/MBFmol ratio was 1:2. No differences were found in maximum bite force between sexes.
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Affiliation(s)
- Arturo Manns
- Department of Restorative Dentistry and Oral Function, Universidad De Los Andes, Santiago, Chile
| | - Víctor Rojas
- Department of Orthodontics, Restorative Dentistry and Oral Function, Universidad De Los Andes, Santiago, Chile
| | | | | | - Camila Sampaio
- Department of Restorative Dentistry and Oral Function, Universidad De Los Andes, Santiago, Chile
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Park WJ, Park IK, Shin KS, Choi EJ. Post-extraction pain in the adjacent tooth after surgical extraction of the mandibular third molar. J Dent Anesth Pain Med 2019; 19:201-208. [PMID: 31501778 PMCID: PMC6726888 DOI: 10.17245/jdapm.2019.19.4.201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/16/2019] [Accepted: 08/19/2019] [Indexed: 11/24/2022] Open
Abstract
Background After tooth extraction, pain due to dry socket and pain in the adjacent tooth are common. The aim of this study was to retrospectively analyze pain in the adjacent tooth after surgical extraction of the mandibular third molar. Methods Postoperative pain due to dry socket, pain in the adjacent tooth, and pain from other causes were present. Group A included patents with dry socket alone; group B included patients with pain in the adjacent tooth alone; and group C included patients with both. The duration of symptoms was recorded. In addition, the prognosis of pain was divided into the complete improvement, improvement, maintenance, deterioration, and complete deterioration groups. Results A total of 312 mandibular third molars were extracted from 13, 60, and 10 patients in groups A, B, and C, respectively. The mean duration of symptoms was 5 days in group A and B and 15.2 days in group C. There were statistically significant differences in the duration of symptoms between groups A and C and groups B and C. Conclusion Pain in the adjacent tooth after third molar extraction can be caused by inflammatory reactions and pressure on this tooth. The pain caused by pressure on the periodontal ligament and alveolar bone results from the cytokines released by osteoclasts, which are responsible for bone destruction. However, pain from periodontal ligament damage caused by excessive pressure may be misunderstood as pulpal pain. Unconscious parafunctional habits, such as clenching and bruxism, could also be associated with post-extraction pain.
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Affiliation(s)
- Won-Jong Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea.,Wonkwang Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea
| | | | - Kyung Su Shin
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea.,Wonkwang Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Eun Joo Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea.,Wonkwang Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea.,Artificial Intelligence Research Institute of Society, Wonkwang University, Iksan, Korea
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Development of the jaw sensorimotor control and chewing - a systematic review. Physiol Behav 2018; 194:456-465. [DOI: 10.1016/j.physbeh.2018.06.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/21/2018] [Accepted: 06/25/2018] [Indexed: 11/20/2022]
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Distribution of nerve fibers during the development of palatine glands in rats. Acta Histochem 2018; 120:110-116. [PMID: 29287611 DOI: 10.1016/j.acthis.2017.12.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 11/24/2022]
Abstract
BACKGROUND Salivary gland maturation and function are modulated by the nervous system. Nevertheless, little is known about salivary gland innervation during development, particularly minor salivary glands. This study investigated the development of the innervation of the palatine glands of rat. MATERIALS AND METHODS Frozen sections of rat palatine glands at different stages were immunohistochemically labeled for detection of the general nerve markers protein gene product 9.5 (PGP 9.5) and growth associated protein 43 (GAP-43), and the autonomic nerve markers calcitonin gene-related peptide (CGRP) and neuropeptide Y (NPY). RESULTS PGP 9.5 and GAP-43-immunoreactive fibers (IRF) were present in the mesenchyme and in association with developing acini, ducts and blood vessels. GAP-43-IRF were more abundant and diffuse than PGP 9.5-IRF at early stages, but showed similar distribution with growth, ramifying out from thick bundles in connective tissues until encircling the secretory units observed around postnatal day 21 (PN21). CGRP-IRF were detected in the mesenchyme at embryonic day 20 (E20) and PN0. CGRP-IRF became numerous around PN7 and PN10. They then decreased to the adult level at PN21, mainly located around ducts and infrequently blood vessels. NPY-IRF were sparsely detected in the mesenchyme at E20, then detected in close proximity to acini in addition to blood vessels at PN3. NPY-IRF increased till reaching the adult stage, and were mainly associated with blood vessels and around mucous cells and some serous demilunes. CONCLUSION The findings indicated a developmental modification of the sensory and autonomic innervation which may play a role in the functional maturation of the palatine salivary glands.
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Lin LH, Jones S, Talman WT. Cellular Localization of Acid-Sensing Ion Channel 1 in Rat Nucleus Tractus Solitarii. Cell Mol Neurobiol 2017; 38:219-232. [PMID: 28825196 DOI: 10.1007/s10571-017-0534-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 08/01/2017] [Indexed: 01/24/2023]
Abstract
By determining its cellular localization in the nucleus tractus solitarii (NTS), we sought anatomical support for a putative physiological role for acid-sensing ion channel Type 1 (ASIC1) in chemosensitivity. Further, we sought to determine the effect of a lesion that produces gliosis in the area. In rats, we studied ASIC1 expression in control tissue with that in tissue with gliosis, which is associated with acidosis, after saporin lesions. We hypothesized that saporin would increase ASIC1 expression in areas of gliosis. Using fluorescent immunohistochemistry and confocal microscopy, we found that cells and processes containing ASIC1-immunoreactivity (IR) were present in the NTS, the dorsal motor nucleus of vagus, and the area postrema. In control tissue, ASIC1-IR predominantly colocalized with IR for the astrocyte marker, glial fibrillary acidic protein (GFAP), or the microglial marker, integrin αM (OX42). The subpostremal NTS was the only NTS region where neurons, identified by protein gene product 9.5 (PGP9.5), contained ASIC1-IR. ASIC1-IR increased significantly (157 ± 8.6% of control, p < 0.001) in the NTS seven days after microinjection of saporin. As we reported previously, GFAP-IR was decreased in the center of the saporin injection site, but GFAP-IR was increased in the surrounding areas where OX42-IR, indicative of activated microglia, was also increased. The over-expressed ASIC1-IR colocalized with GFAP-IR and OX42-IR in those reactive astrocytes and microglia. Our results support the hypothesis that ASIC1 would be increased in activated microglia and in reactive astrocytes after injection of saporin into the NTS.
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Affiliation(s)
- Li-Hsien Lin
- Department of Neurology, Carver College of Medicine, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - Susan Jones
- Department of Neurology, Carver College of Medicine, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA
| | - William T Talman
- Department of Neurology, Carver College of Medicine, University of Iowa, 200 Hawkins Dr., Iowa City, IA, 52242, USA.
- Neurology Service, Veterans Affairs Medical Center, Iowa City, IA, 52246, USA.
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