1
|
Lin CS, Chang WJ, Fuh JL. Lower masticatory function relates to cognitive health and intrinsic brain network in older adults. Oral Dis 2023; 29:2895-2906. [PMID: 36577658 DOI: 10.1111/odi.14487] [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: 09/19/2022] [Revised: 11/23/2022] [Accepted: 12/20/2022] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Mastication is associated with brain activation at the primary somatosensory cortex (S1) and the primary motor cortex (M1). Masticatory functions differ between patients with cognitive impairment (CI) and cognitively healthy older adults (non-CI). The association between cognitive health, brain network of functional connectivity, and mastication has remained unknown. The study investigated the association between masticatory performance (MP) and the topological feature of the functional network at the M1 and S1 in the CI and non-CI groups. SUBJECTS AND METHODS Forty-nine non-CI and 15 CI subjects received resting-state (rs) fMRI and assessment of MP. The topological feature of the M1 and S1 was quantified by eigenvector centrality (EC), an index that reflects a brain region as a functional "hub" of brain network. RESULTS In the non-CI group, MP was significantly correlated with EC of the left M1 and the right M1. The correlation was not statistically significant in the CI group. Cognitive status (CI or non-CI) and EC of the left M1 and the right M1, respectively, were statistically significant predictors to individual MP. CONCLUSION Cognitive status and the topological feature of the M1 in the intrinsic functional network may contribute to the individual difference in masticatory function.
Collapse
Affiliation(s)
- Chia-Shu Lin
- Department of Dentistry, College of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wen-Ju Chang
- Department of Dentistry, College of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jong-Ling Fuh
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| |
Collapse
|
2
|
Osseoperception in transcutaneous osseointegrated prosthetic systems (TOPS) after transfemoral amputation: a prospective study. Arch Orthop Trauma Surg 2023; 143:603-610. [PMID: 34345935 DOI: 10.1007/s00402-021-04099-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Endo-exo prosthetics (EEP), which belongs to the transcutaneous osseointegrated prosthetic systems (TOPS), provides an alternative bone-anchored rehabilitation method for transfemoral amputees. It led to the question of whether transmitted forces from prosthetic feet are perceptible by osseoperception resulting in proprioceptive feedback of ground conditions. OBJECTIVES The following hypotheses emerged for our trial with the null hypothesis: EEP fitting after transfemoral amputation does not influence osseoperception. Alternative hypothesis 1: EEP patients achieve better osseoperception results than transfemoral amputees fitted with socket prosthesis. Alternative hypothesis 2: EEP carriers achieve comparable results with regards to their osseoperception as non-amputees. METHODS N = 25 patients with EEP (mean age = 50,6 ± 9,4, male/female = 15/10) N = 25 patients with socket prostheses (mean age = 52,6 ± 13,1, male/female = 19/6) and N = 25 healthy volunteers were included in the experimental case-control study. In three blinded test modules (V1, V2, V3), the participants had to identify different degrees of shore hardness (c) of different materials (rubber balls (shore = 5-25c), foam cushions (shore = 5-30c), foam mats (shore = 5-30c) with their prosthetic foot (or a personally defined foot in healthy volunteers) without footwear and had to rank them into the correct order according to their tactile sensation and the degree of hardness. A maximum of 10 points could be scored per run. RESULTS This experimental observational study included N = 75 participants. The mean age for the entire cohort was 42.8 ± 16.6 years and the BMI was 26.0 ± 4.8. Our results show a significant level of differences in tactile osseoperception between all groups (p < 0.001). A correlation between the mean values of V1-3 and the PMQ2.0 as well as the mean values of K-Level and the prosthesis wearing time per day showed for PMQ (r = 0.387, p = 0.006) and K-level (r = 0.448, p = 0.001) which is a moderate effect according to Cohen. CONCLUSION Our study results suggest that the EEP treatment can lead to an improvement in tactile sensory perception via the bone-anchored implant, which can lead to an increase in quality of life and improved gait safety.
Collapse
|
3
|
Top tips for occlusion in primary care. Br Dent J 2022; 233:908-909. [PMID: 36494522 DOI: 10.1038/s41415-022-5321-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
4
|
González-Gil D, Dib-Zaitun I, Flores-Fraile J, López-Marcos J. Active Tactile Sensibility in Implant Prosthesis vs. Complete Dentures: A Psychophysical Study. J Clin Med 2022; 11:jcm11226819. [PMID: 36431296 PMCID: PMC9697244 DOI: 10.3390/jcm11226819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Proprioceptive information from natural dentition and adjacent oral tissues enables correct masticatory function, avoiding damage to the teeth. Periodontium is the main source of this relevant information, and when a tooth is lost, all this proprioceptive sensibility relies on receptors from muscles, the mucous membrane or the temporomandibular joint, and this sensibility gets worse. Active tactile sensibility measures this proprioceptive capability in microns by psychophysical studies consisting of introducing thin metal foils between patients' dental arches during chewing to see if they are able to notice them or not. Osseoperception is a complex phenomenon that seems to improve this sensibility in patients wearing dental implants. The objective of this investigation is to measure this sensibility in different prosthetic situations by performing a psychophysical investigation. MATERIAL AND METHODS We divided 67 patients in three groups depending on their prosthetic situation and performed a psychophysical study by introducing aluminium foils of different thicknesses in order to establish an active tactile sensibility threshold in every group. We also measured variables such as prosthetic wearing time, age or gender to see how they may influence threshold values. We used Student's t-test and Mann-Whitney U tests to analyse these results. RESULTS Active tactile sensibility threshold values in implants are lower than those from complete dentures but higher than values in natural dentition. However, values in implants are closer to natural dentition than complete denture values. Age, gender or prosthetic wearing time have no influence in active tactile sensibility thresholds. CONCLUSION Active tactile sensibility threshold values depend on prosthetic rehabilitations and the mechanoreceptors involved in every situation. Implant prosthesis presents an increased active tactile sensibility thanks to osseoperception phenomenon.
Collapse
|
5
|
Assoratgoon I, Yoda N, Iwamoto M, Sato T, Kawata T, Egusa H, Sasaki K. In vivo measurement of three-dimensional load exerted on dental implants: a literature review. Int J Implant Dent 2022; 8:52. [DOI: 10.1186/s40729-022-00454-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/17/2022] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
For biomechanical consideration of dental implants, an understanding of the three-dimensional (3D) load exerted on the implant is essential, but little information is available on the in vivo load, including the measuring devices.
Purpose
This review aimed to evaluate studies that used specific load-measuring devices that could be mounted on an implant to measure the functional load in vivo.
Materials and methods
An electronic search utilizing the internet research databases PubMed, Google Scholar, and Scopus was performed. The articles were chosen by two authors based on the inclusion and exclusion criteria.
Results
In all, 132 studies were selected from the database search, and 16 were selected from a manual search. Twenty-three studies were finally included in this review after a complete full-text evaluation. Eleven studies were related to the force measurements using the strain gauges, and 12 were related to the piezoelectric force transducer. The principles of the two types of devices were completely different, but the devices produced comparable outcomes. The dynamics of the load magnitude and direction on the implant during function were clarified, although the number of participants in each study was small.
Conclusions
The load exerted on the implant during function was precisely measured in vivo using specific measuring devices, such as strain gauges or piezoelectric force transducers. The in vivo load data enable us to determine the actual biomechanical status in more detail, which might be useful for optimization of the implant prosthetic design and development of related materials. Due to the limited data and difficulty of in vivo measurements, the development of a new, simpler force measurement device and method might be necessary.
Collapse
|
6
|
Athab Abduljabbar Z, Svensson KG, Hjalmarsson L, Franke Stenport V, Eliasson A. Chewing side preference and laterality in patients treated with unilateral posterior implant-supported fixed partial prostheses. J Oral Rehabil 2022; 49:1080-1086. [PMID: 36065716 PMCID: PMC9826335 DOI: 10.1111/joor.13366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 06/16/2022] [Accepted: 08/22/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND It is not clear to what extent chewing is improved by unilateral oral rehabilitation with implant-supported fixed partial prostheses (ISFPPs). OBJECTIVES This study aimed to investigate whether patients treated with unilateral ISFPPs in the maxilla use their prostheses during mastication to the same extent as they used their contralateral natural teeth. A further aim was to investigate whether there is a correlation between preferred chewing side and laterality. METHODS Chewing side preference was assessed in 15 participants treated with unilateral ISFPPs in the maxilla. The first, second, third, fifth and tenth chewing cycles were assessed, and the test was repeated 10 times. All participants also answered a questionnaire about their chewing side preference. RESULTS Most of the participants presented bilateral chewing, but two (13%) chewed only on the ISFPP. There was no statistically significant association between the objectively assessed chewing side and dental status (natural teeth or ISFPPs) during any of the recorded chewing cycles (p > .1). There were statistically significant correlations between both the subjectively reported usually preferred chewing side and the subjective chewing side preference during the test and the objectively assessed chewing side for the first three chewing cycles (p < .01). No correlation was found between handedness and the objectively assessed chewing side. CONCLUSION In the present study, most participants chewed bilaterally, and chewing was performed both on the ISFPP and on the natural teeth. No correlation was found between the preferred chewing side, objectively or subjectively determined and laterality.
Collapse
Affiliation(s)
- Zahra Athab Abduljabbar
- Specialist Dental Clinic, Folktandvården Sörmland ABMälar HospitalEskilstunaSweden,Centre for Clinical Research SörmlandUppsala UniversityUppsalaSweden,Department of Prosthodontics/Dental Materials Science, Institute of Odontology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | | | - Lars Hjalmarsson
- Specialist Dental Clinic, Folktandvården Sörmland ABMälar HospitalEskilstunaSweden,Centre for Clinical Research SörmlandUppsala UniversityUppsalaSweden,Department of Prosthodontics/Dental Materials Science, Institute of Odontology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Victoria Franke Stenport
- Department of Prosthodontics/Dental Materials Science, Institute of Odontology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Alf Eliasson
- Dental Research Department, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| |
Collapse
|
7
|
Gainutdinovs O, Gaynutdinov O, Jevstignejevs V, Studers P. Vibration transmission in bone-anchored prosthesis under vertical load. Cadaver study. Prosthet Orthot Int 2022; 46:444-451. [PMID: 35363637 DOI: 10.1097/pxr.0000000000000127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 02/15/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Sensory feedback between a device and its user helps to improve the effectiveness of control and training processes. These improvements involve corrective actions and the accumulation of experience to accelerate patient training in device control. OBJECTIVES Vibrations from rehabilitation devices are used as sensory feedback signals for improving rehabilitation outcomes. STUDY DESIGN Variations in the bone-anchored prosthesis frequency responses and vibration transmissibility under compressive loading were studied. METHODS Five laboratory samples consisting of the above-knee prosthesis, custom-made implant, and cadaver bone were first axially compressed using universal testing machine; preloaded construction vibrations were generated with a shaker to imitate external forces acting on these samples. The oscillations at the sample surface control points were tested with a laser vibrometer. For different values of axial loading, the frequency responses of the samples and indexes of vibration attenuation were obtained to examine the correlations between vibration transmissibility in the samples and axial loads. RESULTS Increase in axial loading caused an increase in the resonance frequency and a simultaneous decrease in vibratory displacement within the sample. At low frequencies (40-80 Hz), increasing the axial load degraded transmissibility; at medium and high frequencies, transmissibility changes were unstable on increasing the axial load. CONCLUSIONS The osseoperception phenomenon is because of perceived prosthesis vibration analysis by the user. Vibration transmissibility of a prosthesis sample depends on the axial compression and frequency of excitation. Decreasing the vibration amplitude while increasing axial load is the primary reason for reduced perception of vibration.
Collapse
Affiliation(s)
- Oskars Gainutdinovs
- Riga Stradin's University, Riga, Latvia
- Hospital for Traumatology and Orthopaedics, Riga, Latvia
- Tehniska Ortopedija Ltd, Riga, Latvia
| | | | | | - Peteris Studers
- Riga Stradin's University, Riga, Latvia
- Hospital for Traumatology and Orthopaedics, Riga, Latvia
| |
Collapse
|
8
|
Li J, Xue S, Liu Z, Yao D, Ting J. Distribution of mature and newly regenerated nerve fibers after tooth extraction and dental implant placement: an immunohistological study. J Oral Rehabil 2022; 49:796-805. [PMID: 35576051 DOI: 10.1111/joor.13338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/07/2022] [Accepted: 05/10/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND The time-dependent peri-implant innervation needs to be elucidated in detail. OBJECTIVES To examine the distribution of mature and newly regenerated nerves around the implant with immunofluorescence during 28-days follow-up after implantation. METHODS 35 male Sprague-Dawley rats were grouped into non-operated(n=5), extraction(n=5), and implant(n=25) groups. For rats in the extraction and implant groups, three right maxillary molars were extracted. One month later, a titanium implant was placed into the healed alveolar ridge in the implant group. The implant group was further divided into 5 subgroups according to day 1, 3, 7, 14, or 28 after implantation, on which day serial histological sections were prepared for immunohistochemistry. On day 28, the serial sections were also prepared in the non-operated and extraction groups. Soluble protein-100 and growth-associated protein-43 were used to immunolabel mature and newly regenerated nerve fibers respectively. RESULTS In the peri-implant soft tissues, the number of both mature and newly regenerated nerves showed an increasing trend in 28 days. In the bone tissues, the number of mature or newly regenerated nerves in both areas at less than 100 μm and 100-200 μm from the implant surface on day 28 grew significantly compared with that on day 1 or 3. In addition, the closest distance from mature nerves to the implant surface decreased evidently. CONCLUSION The number of peri-implant nerves increased in 28 days since implantation. The innervation in the soft tissue took place faster than in the bone tissue. The mature nerves in the bone tissue approached the implant gradually.
Collapse
Affiliation(s)
- Jian Li
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, P.R. China
| | - Shenghao Xue
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, P.R. China
| | - Zhongning Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, P.R. China
| | - Dongyuan Yao
- Neurological Institute of Jiangxi Province and Department of Neurology, Jiangxi Provincial People's Hospital, Nanchang Medical College, Jiangxi, P.R. China
| | - Jiang Ting
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, P.R. China
| |
Collapse
|
9
|
Tao J, Wang D, Jin A, Xue J, Hu S, Yu H. The role of gingival mechanoreceptors in the tactile function of dental implants. Neurosci Lett 2022; 774:136502. [PMID: 35122933 DOI: 10.1016/j.neulet.2022.136502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/11/2022] [Accepted: 01/28/2022] [Indexed: 11/29/2022]
Abstract
Dental implants seem to restore some degree of tactile function. The aim of this study was to investigate the role of gingival mechanoreceptors in dental-implant osseoperception at the cortical-response level. The gingiva of the upper-left canine implant was stripped off under local anesthesia in five cats. We used intrinsic-signal optical imaging (ISOI) to measure the population-response characteristics of the feline oral-related cortex when separately applying punctate mechanical stimuli to the left canine implant and right intact natural canine. These response characteristics were compared under local anesthesia after removal of the gingiva. Under local anesthesia, the signal strength of the implant was significantly weaker than that of the tooth under weak but not under strong stimulus. After the gingiva was stripped off, the signal strength of the implant was significantly weaker than that of the tooth at all strengths of stimulus. Based on the evoked cortical responses, the gingiva was involved in the maximal tactile function of the implant.
Collapse
Affiliation(s)
- Jianxiang Tao
- Department of Prosthodontics, School &Hospital of Stomatology Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, 200072, China
| | - Duo Wang
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, 200433, China
| | - Anqi Jin
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, 200433, China
| | - Jinlang Xue
- Department of Prosthodontics, School &Hospital of Stomatology Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, 200072, China
| | - Shuai Hu
- Department of Prosthodontics, School &Hospital of Stomatology Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, 200072, China
| | - Hongbo Yu
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, 200433, China
| |
Collapse
|
10
|
Song D, Shujaat S, Constantinus P, Orhan K, Jacobs R. Osseoperception following dental implant treatment: a systematic review. J Oral Rehabil 2021; 49:573-585. [PMID: 34911146 DOI: 10.1111/joor.13296] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/18/2021] [Accepted: 12/07/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVES Osseoperception is defined as the ability to perceive tactile sensation via mechanoreception in the peri-implant environment. The objective was to systematically review the available literature on the osseoperception phenomenon following dental implant placement and to explore potential factors which might improve the perception capacity. MATERIAL AND METHODS A literature search was performed using PubMed, Cochrane, Embase, and Web of Science databases up to June 2021. Both human and animal studies assessing sensory capacity or innervation following implant placement were included in this review. Two reviewers independently performed the study selection, data extraction and quality assessment of the included studies. The methodological quality of the included papers was assessed using Cochrane risk of bias for human studies and SYRCLE's risk of bias tool for animal studies. RESULTS The electronic search of databases yielded 1667 results. Following removal of duplicates, title and abstract screening and full-text reading, 22 publications were eligible to be included in the review. Psychophysical evidence from 14 studies indicated a lower tactile function of implants, where active and passive threshold level were found to be 5 and 50 times higher for implants compared to natural teeth, respectively. The neurophysiological evidence from 3 studies indicated cortical plasticity following dental implant placement, measured via trigeminal nerve evoked potentials and functional magnetic resonance imaging. Histological evidence from 5 studies demonstrated the presence of myelinated nerve fibres in the peri-implant tissues. Additionally, immediate implant placement and loading showed beneficial effect on peri-implant tissue (re)innervation, however, no other biological or physiological factors could be identified influencing osseoperception. CONCLUSIONS The reported evidence supported the existence of so-called osseoperception phenomenon for restoring the sensory feedback pathway following oral implant rehabilitation. Further studies are required to identify factors that might further assist physiological integration of the oral implants in the human body as such to approach natural oral function.
Collapse
Affiliation(s)
- Dandan Song
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Sohaib Shujaat
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Politis Constantinus
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Kaan Orhan
- Department of DentoMaxillofacial Radiology, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Reinhilde Jacobs
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| |
Collapse
|
11
|
Tomasi C, Albouy JP, Schaller D, Navarro RC, Derks J. Efficacy of rehabilitation of stage IV periodontitis patients with full-arch fixed prostheses: Tooth-supported versus Implant-supported-A systematic review. J Clin Periodontol 2021; 49 Suppl 24:248-271. [PMID: 34761430 DOI: 10.1111/jcpe.13511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/29/2021] [Accepted: 05/25/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To evaluate the efficacy of implant-supported in comparison to tooth-supported full-arch prostheses in patients with stage IV periodontitis. MATERIALS AND METHODS Systematic electronic search (CENTRAL/MEDLINE/SCOPUS) up to March 2020 was conducted to identify randomized controlled trials and cohort-like studies comparing/evaluating fixed full-arch rehabilitation on teeth or implants in patients with stage IV periodontitis. The primary outcome measure was loss of teeth/implants and restorations. Data extraction was performed to create evidence tables, and meta-analyses were carried out as appropriate. RESULTS A total of 26 studies (31 publications) were identified but none addressed the scientific question in a controlled and randomized design. The risk of bias throughout the included studies was judged to be high, and meta-analyses demonstrated a high degree of heterogeneity. Mean-weighted observation periods in studies on tooth-supported restorations were significantly longer than in studies on implant-supported restorations. The predicted loss of teeth and tooth-supported full-arch restorations over 10 years was 1% and 5%, respectively. The 15-year estimates were 10% and 13%. Corresponding predictions for implants and implant-supported restorations for 10 years amounted to 4% and 6%, respectively. Technical complications were the most commonly reported and affected 8% of tooth-supported restorations (during 7.2 years) and 42% of implant-supported structures (during 2.6 years). Peri-implantitis- or peri-implantitis-like symptoms were observed at an estimated 9% of implants (after 3.1 years). CONCLUSIONS Based on observational studies on full-arch rehabilitation of stage IV periodontitis patients, 10-year estimates of tooth loss were lower than the corresponding estimates for implants. Estimated loss of tooth- and implant-supported restorations at 10 years was similar. Technical complications were more prevalent at implant-supported when compared to tooth-supported restorations.
Collapse
Affiliation(s)
- Cristiano Tomasi
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Jean-Pierre Albouy
- Division of Comprehensive Oral Health, Department of Prosthodontics, Adams School of Dentistry, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dennis Schaller
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Renata Camino Navarro
- Division of Comprehensive Oral Health, Department of Prosthodontics, Adams School of Dentistry, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Jan Derks
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
12
|
Xue J, Wang D, Jin A, Tao J, Yu H. Investigating the role of gingiva in the tactile function of teeth at the cortical level. Neurosci Lett 2021; 764:136198. [PMID: 34450230 DOI: 10.1016/j.neulet.2021.136198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/26/2021] [Accepted: 08/21/2021] [Indexed: 11/26/2022]
Abstract
The role of the gingiva in the tactile perception of teeth is unclear, and the physiological basis of tooth tactile function needs to be examined at the cortical response level. In the presented study, gingiva from the upper left canine was removed under local anesthesia from five cats. Intrinsic signal optical imaging was used to measure population response characteristics of the cat oral-related cortex when punctate mechanical stimuli were separately applied to the left gingiva-stripped canine and right intact canine. Then, their response characteristics were compared. There were no significant differences in the cortical response strength between the anesthetized and unanesthetized canines. Signal strength of the gingiva-stripped tooth was significantly weaker than that of the intact tooth at low stimulus strength. However, no significant differences between the gingiva-stripped tooth and intact tooth were found after saturation. Based on the evoked cortical responses, the gingiva is involved in low-intensity tactile perception of teeth, which could explain the reason why chronic gingivitis results in the paresthesia of natural teeth.
Collapse
Affiliation(s)
- Jinlang Xue
- Department of Prosthodontics, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China
| | - Duo Wang
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai 200433, China
| | - Anqi Jin
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai 200433, China
| | - Jianxiang Tao
- Department of Prosthodontics, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China.
| | - Hongbo Yu
- Vision Research Laboratory, School of Life Sciences, The State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, Fudan University, Shanghai 200433, China.
| |
Collapse
|
13
|
Moraes N, Moraes E, Anastacio T, Silva L, Machado A, Schoichet J, Alto RM, Mello-Machado R, Cardarelli A, Mourão CFDAB, Casado P, Romanos G. Active Tactile Sensibility of Brånemark Protocol Prostheses: A Case-Control Clinical Study. MATERIALS 2021; 14:ma14164644. [PMID: 34443165 PMCID: PMC8398523 DOI: 10.3390/ma14164644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/06/2021] [Accepted: 08/13/2021] [Indexed: 12/23/2022]
Abstract
Few studies have assessed active tactile sensibility in patients rehabilitated with implants. Improved knowledge about functional tactile sensibility will contribute to several clinical applications, such as protocols for immediate loading, prosthesis design, occlusal improvement in implantology, and physiological integration of implant-supported prostheses. The present study evaluated active tactile sensibility in patients rehabilitated with Brånemark-type mandibular prostheses that impede the total mucosa-supported maxillary prosthesis. Thirty-five subjects participated in this study. The experimental group (n = 18) inclusion criteria were as follows: Brånemark-type prosthesis and a total mucosa-supported maxillary prosthesis. The control group (n = 17) was composed of participants with complete healthy dentition. Carbon foils with different thicknesses (12 μm, 24 μm, 40 μm, 80 μm, and 200 μm) were placed in the premolar region to evaluate the brink of active oral tactile sensibility. The researchers assessed the participants 120 times. After evaluation, we observed a statistical difference (p < 0.05) between the groups. Additionally, the degree of sensibility was found for all thicknesses, except for 12 μm, on both sides. There was a more significant increase in perception in the control group as the carbon thickness increased. The tactile sensibility threshold was 2.5 times greater for participants with prostheses. Thus, the tactile sensibility for mandibular implant-supported and maxillary mucosa-supported prostheses is significantly lower than that of dentate patients, which was detected above the thickness of 80 μm; in patients with natural dentition, different thicknesses were seen starting from 24 μm.
Collapse
Affiliation(s)
- Nathalia Moraes
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - Eduardo Moraes
- De Moraes Institution, Rio de Janeiro 22050-001, Brazil;
| | - Tiago Anastacio
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - Licínio Silva
- Implant Dentistry Department, Universidade Iguaçu, Nova Iguaçu 26260-045, Brazil; (L.S.); (R.M.-M.)
| | - Aldir Machado
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - José Schoichet
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - Raphael Monte Alto
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - Rafael Mello-Machado
- Implant Dentistry Department, Universidade Iguaçu, Nova Iguaçu 26260-045, Brazil; (L.S.); (R.M.-M.)
| | - Angelo Cardarelli
- Department of Dentistry, University Vita Salute San Raffaele, 20100 Milan, Italy;
| | - Carlos Fernando de Almeida Barros Mourão
- Clinical Research Laboratory in Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil
- Correspondence: (C.F.d.A.B.M.); (G.R.); Tel.:+1-941-830-1302 (C.F.d.A.B.M.)
| | - Priscila Casado
- Pos-graduation of Implant Dentistry, School of Dentistry, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (N.M.); (T.A.); (A.M.); (J.S.); (R.M.A.); (P.C.)
| | - Georgios Romanos
- School of Dental Medicine, Stony Brook University, New York, NY 11794, USA
- Correspondence: (C.F.d.A.B.M.); (G.R.); Tel.:+1-941-830-1302 (C.F.d.A.B.M.)
| |
Collapse
|
14
|
Zhou T, Wongpairojpanich J, Sareethammanuwat M, Lilakhunakon C, Buranawat B. Digital occlusal analysis of pre and post single posterior implant restoration delivery: A pilot study. PLoS One 2021; 16:e0252191. [PMID: 34214089 PMCID: PMC8253389 DOI: 10.1371/journal.pone.0252191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 04/09/2021] [Indexed: 11/18/2022] Open
Abstract
Objectives The purposes of this study were to analyze the effects of single posterior implant restorations delivery on the redistribution of bite force and to evaluate the changes in occlusal force distribution of prostheses and potential influencing factors on occlusion variation at different stages. Materials and methods Thirty-two single posterior restorations in 30 participants (18 women and 12 men aged 27 to 75 years) were placed into either a unilateral single-tooth defect (n = 17) or on either side of a bilateral teeth defects (n = 15). The bite force (%) of the prostheses, teeth and segments at the maximum intercuspation position (MIP) was evaluated using a T-scan at 5 stages (pre-placement, immediately following placement, and 2 weeks, 3 months, and 6 months post-placement). Results The occlusal force of implant-supported prostheses was significantly (P = .000) lower than those of the control natural teeth at the baseline, then no significant difference was found with that of the mesial teeth at 3 months, and finally it was significantly (P = .000) lower than that of the distal teeth at 6 months; meanwhile, it significantly (P = .008) increased by a mean of 2.04 times from 2 weeks (3.39 ± 2.61%) to 3 months (6.90 ± 4.77%), whereas no significant difference (P = .900) was found from 3 months (6.90 ± 4.77%) to 6 months (7.31 ± 4.60%). In addition, the bite force of the posterior segment on the restored side of both unilateral and bilateral gaps was significantly (P = .013,.001) improved by 3.31% and 6.83%, respectively, although the discrepancy in bite force significantly (P = .039) increased from an initial 3.52% to 5.02% for subjects with bilateral defects, accompanying increases in the proportion (15.38%) of the level III bilateral bite force deviation (P >.05). Conclusions Bite force and masticatory ability can be improved with the immediate delivery of a single posterior implant restoration. The bite force distributed on the implant prosthesis inevitably increases after placement of implant prostheses, a routine follow-up and occlusal evaluation are strongly needed.
Collapse
Affiliation(s)
- Ting Zhou
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
- Department of Orthodontics, School of Stomatology, Kunming Medical University, Yunnan, China
| | - Jirapa Wongpairojpanich
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Maytha Sareethammanuwat
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Charukrit Lilakhunakon
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Borvornwut Buranawat
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
- * E-mail:
| |
Collapse
|
15
|
Vila-Nova TEL, Vasconcelos BCDE, Leão RDS, Gomes JML, Feitosa RSC, Pellizzer EP, Moraes SLD. Does nocturnal use of a complete denture interfere with the degree of obstructive sleep apnea? A systematic review and meta-analysis. Sleep Breath 2021; 25:2289-2296. [PMID: 33415655 DOI: 10.1007/s11325-020-02265-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 10/26/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND The impact of a complete denture on obstructive sleep apnea is not well understood. Therefore, this study aimed to evaluate the relationship between nighttime use of complete dentures and obstructive sleep apnea and determine if wearing a complete denture during sleep changes the degree of obstructive sleep apnea. METHODS This systematic review followed the notification items for Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and was recorded in the International Prospective Registry of Systematic Reviews (PROSPERO) under number CRD42020183167. An electronic search in the PubMed/MEDLINE, Scopus, and Cochrane Library databases for articles published until September 2020 was conducted. The search strategy used the terms (complete denture OR denture OR edentulous OR edentulism) AND (quality of sleep OR sleep OR apnea OR obstructive sleep apnea). Only prospective, retrospective, controlled, and randomized clinical studies of patients wearing complete dentures, studies comparing sleep with and without the prosthesis, and studies in which patients were diagnosed with obstructive sleep apnea by polysomnography were included in the review. RESULTS In total, four articles were selected for the qualitative and quantitative analyses. A total of 144 patients, with an average age of 60 years, were studied. The meta-analysis showed that there was no statistical difference in the apnea-hypopnea index between using and not using the prosthesis during sleep. CONCLUSIONS The use of complete dentures during sleep does not influence the degree of obstructive sleep apnea.
Collapse
Affiliation(s)
- Taciana Emília Leite Vila-Nova
- Dentistry School Department of Prosthodontics, University of Pernambuco (UPE), Av. Governador Agamenon Magalhães, SN- Santo Amaro, Recife, PE, 50100-010, Brazil
| | - Belmiro Cavalcanti do Egito Vasconcelos
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pernambuco University (UPE), Oswaldo Cruz Hospital, University of Pernambuco, R. Arnóbio Marquês 310 - Santo Amaro, Recife, PE, 50100-130, Brazil
| | - Rafaella de Souza Leão
- Dentistry School Department of Prosthodontics, University of Pernambuco (UPE), Av. Governador Agamenon Magalhães, SN- Santo Amaro, Recife, PE, 50100-010, Brazil
| | - Jéssica Marcela Luna Gomes
- Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), Araçatuba Dental School, José Bonifacio Street 1193, Araçatuba, SP, 1605000, Brazil
| | - Raquel Sâmela Costa Feitosa
- Dentistry School Department of Prosthodontics, University of Pernambuco (UPE), Av. Governador Agamenon Magalhães, SN- Santo Amaro, Recife, PE, 50100-010, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), Araçatuba Dental School, José Bonifacio Street 1193, Araçatuba, SP, 1605000, Brazil
| | - Sandra Lúcia Dantas Moraes
- Dentistry School Department of Prosthodontics, University of Pernambuco (UPE), Av. Governador Agamenon Magalhães, SN- Santo Amaro, Recife, PE, 50100-010, Brazil.
| |
Collapse
|
16
|
Goto T, Higaki N, Kishimoto T, Tomotake Y, Ichikawa T. Does Periodontal Tactile Input Uniquely Increase Cerebral Blood Flow in the Prefrontal Cortex? Brain Sci 2020; 10:brainsci10080482. [PMID: 32722618 PMCID: PMC7465782 DOI: 10.3390/brainsci10080482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/18/2020] [Accepted: 07/23/2020] [Indexed: 11/16/2022] Open
Abstract
We previously studied the effect of peripheral sensory information from sensory periodontal ligament receptors on prefrontal cortex (PFC) activity. In the dental field, an alternative dental implant without periodontal sensation can be applied for missing teeth. In this study, we examine whether periodontal tactile input could increase cerebral blood flow (CBF) in the PFC against elderly patients with dental implants lacking periodontal tactile (implant group), elderly individuals with natural teeth (elderly group), and young individuals with natural teeth (young group). The experimental task of maintaining occlusal force as closed-loop stimulation was performed. Compared with the young group, the elderly group showed significantly lower CBF. Contrastingly, compared with the young group, the implant group showed significantly lower CBF. There were no significant differences between the elderly and implant groups. Regarding the mean occlusal force value, compared with the young group and the elderly group, the implant group had a numerically, but not significantly, larger occlusal force exceeding the directed range. In conclusion, the periodontal tactile input does not uniquely increase PFC activity. However, increased CBF in the PFC due to the periodontal tactile input in the posterior region requires existing attention behavior function in the PFC.
Collapse
Affiliation(s)
- Takaharu Goto
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University Graduate School of Biomedical Sciences, Tokushima 770-8504, Japan; (N.H.); (T.K.); (T.I.)
- Correspondence: ; Tel.: +81-88-633-7347
| | - Nobuaki Higaki
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University Graduate School of Biomedical Sciences, Tokushima 770-8504, Japan; (N.H.); (T.K.); (T.I.)
| | - Takahiro Kishimoto
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University Graduate School of Biomedical Sciences, Tokushima 770-8504, Japan; (N.H.); (T.K.); (T.I.)
| | - Yoritoki Tomotake
- Oral Implant Center, Tokushima University Hospital, Tokushima University, Tokushima 770-8504, Japan;
| | - Tetsuo Ichikawa
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University Graduate School of Biomedical Sciences, Tokushima 770-8504, Japan; (N.H.); (T.K.); (T.I.)
| |
Collapse
|
17
|
Song D, Liang X, Zheng H, Shujaat S, Van Dessel J, Zhong W, Ma G, Lambrichts I, Jacobs R. Peri-implant myelinated nerve fibers: Histological findings in dogs. J Periodontal Res 2020; 55:567-573. [PMID: 32154923 DOI: 10.1111/jre.12744] [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: 11/19/2019] [Revised: 02/11/2020] [Accepted: 02/21/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE While osseointegration following various dental implant placement protocols has been extensively investigated, the neurohistological integration has received little attention. The primary aim of this study was to compare the myelinated nerve fibers density in peri-implant bone tissue following various implant placement protocols. The secondary aim assessed the effect of follow-up on peri-implant nerve fibers density. METHODS Ten beagle dogs randomly received 68 commercially pure titanium implants in the mandibular premolar or molar region bilaterally following extraction utilizing one of the six treatment protocols: (a) immediate implant placement (IIP) and immediate loading (IL); (b) IIP and delayed loading (DL); (c) IIP and left unloaded (UL); (d) delayed implant placement (DIP) and IL; (e) DIP and DL; and (f) DIP and UL. Histomorphometric analysis of the peri-implant myelinated nerve fibers was performed in a 300 μm peri-implant zone at the cervical, middle, and apical level following implant placement. The follow-up assessment involved longitudinal observation at 3 months following each implant treatment protocol and at 6 months for IIP+IL and IIP+DL protocols. RESULTS The influence of different treatment protocols, including the fixed effects of implant groups (IIP+IL, IIP+DL, IIP+UL, DIP+IL, DIP+DL, DIP+UL) and regions (cervical, middle, apical), was examined via a linear mixed model. The IIP+IL group showed a significantly higher myelinated nerve density compared to the IIP+UL and DIP+UL group. Peri-implant nerve re-innervation was significantly higher (P = .002) in the apical region compared to the cervical region. After immediate implant placement, the IL group showed a significantly (P = .03) higher density of myelinated nerve fibers compared to DL. No significant (P = .19) effect of follow-up on nerve density was observed. CONCLUSION The immediate implant placement and loading protocol showed most beneficial effect on peri-implant innervation with highest myelinated nerve density in the apical region. A longer loading time had no influence on the peri-implant nerve density.
Collapse
Affiliation(s)
- Dandan Song
- Department of School of Stomatology, Dalian Medical of University, Dalian, China.,OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Xin Liang
- Department of School of Stomatology, Dalian Medical of University, Dalian, China
| | - Hui Zheng
- Department of School of Stomatology, Dalian Medical of University, Dalian, China
| | - Sohaib Shujaat
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Jeroen Van Dessel
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Weijian Zhong
- Department of School of Stomatology, Dalian Medical of University, Dalian, China
| | - Guowu Ma
- Department of School of Stomatology, Dalian Medical of University, Dalian, China
| | - Ivo Lambrichts
- Morphology Group, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Reinhilde Jacobs
- OMFS IMPATH research group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| |
Collapse
|
18
|
Figueredo OMC, Câmara-Souza MB, Carletti TM, de Sousa MDLR, Rodrigues Garcia RCM. Mastication and oral sensory function in frail edentulous elderly: a case-control study. Int Dent J 2020; 70:85-92. [PMID: 31916591 DOI: 10.1111/idj.12529] [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: 11/27/2022] Open
Abstract
OBJECTIVE To evaluate the maximum bite force (MBF), masticatory performance and oral sensory function (OSF) of frail edentulous elderly. The correlation of MBF with maximum grip strength (MGS) was also assessed. METHODS Twenty edentulous elderly [10 with and 10 without the frailty phenotype (FP)] were selected to participate in this case-control study. The FP was diagnosed using the criteria of Fried et al., which consider weight loss, exhaustion, physical activity level, weakness and slowness to the evaluation. All volunteers received new complete dentures (CDs) to standardise the occlusal status, and after 2 months of use with no complaint, all variables were assessed. MBF was measured by pressure sensors positioned bilaterally on the first artificial molars. Masticatory performance was assessed using the sieving method and was expressed as the median particle size (X50 ) of Optocal after 40 masticatory cycles. OSF was evaluated using the oral stereognosis test, and MGS was measured using a dynamometer. Groups were compared using one-way analysis of variance. The Pearson coefficient of correlation between MBF and MGS was calculated. RESULTS Frail elderly people showed reduced MBF (P = 0.0431) and larger X50 values (P = 0.0053) than did non-frail elders, while OSF did not differ between the groups. MBF had a moderate positive correlation with MGS (r = 0.690, P = 0.003). CONCLUSIONS Frail elderly had reduced MBF and impaired mastication. On the other hand, OSF does not seem to be affected by frailty. MBF was moderately correlated with MGS.
Collapse
Affiliation(s)
- Olívia Maria Costa Figueredo
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Mariana Barbosa Câmara-Souza
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Talita Malini Carletti
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | | | | |
Collapse
|
19
|
Evaluation of functional parameters in the occlusion of complete denture wearers before and after prosthetic treatment. J Prosthodont Res 2017; 61:480-490. [PMID: 28359871 DOI: 10.1016/j.jpor.2017.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 01/06/2017] [Accepted: 03/01/2017] [Indexed: 11/22/2022]
Abstract
PURPOSE The aim of the study was to evaluate functional parameters of the occlusion in complete denture wearers before and after prosthetic treatment. METHODS The sample used as the basis for the present study consisted of 50 healthy Caucasian patients (35 women and 15 men), aged from 44 to 86 years (mean=69.18±10), with a total deficiency of teeth. All patients received new complete dentures. Each patient underwent lateral radiograph with the presence of complete dentures, both before (initially existing dentures) and after the prosthetic treatment (new restorations). Cephalometric analysis was based on the Ricketts and McNamara criteria. In order to assess the functional parameters of the occlusion T-scan III analysis was conducted. The following parameters were measured: occlusion - and disclusion time. RESULTS Statistically significant differences of functional parameters obtained before and 3 months after the treatment were noted in the whole study group. Both before and after therapy occlusion time was longer in women than in men. No statistically significant link was noted between functional parameters in occlusion and age of the patients, denture wearing time, and edentulous period. Some relationships were noted between occlusion time and cephalometric parameters associated with anterior facial height. CONCLUSION Reconstruction of the surface of artificial teeth and vertical occlusal dimension affects the sustainability of parameters of occlusion and balance of forces in centric occlusion. The progressive shortening of occlusion time during the period of monitoring may be considered as a sign of progressive adaptation.
Collapse
|
20
|
Effects of Food Texture on Three-Dimensional Loads on Implants During Mastication Based on In Vivo Measurements. IMPLANT DENT 2016; 25:515-9. [DOI: 10.1097/id.0000000000000443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
21
|
Abstract
Absence of an upper limb leads to severe impairments in everyday life, which can further influence the social and mental state. For these reasons, early developments in cosmetic and body-driven prostheses date some centuries ago, and they have been evolving ever since. Following the end of the Second World War, rapid developments in technology resulted in powered myoelectric hand prosthetics. In the years to come, these devices were common on the market, though they still suffered high user abandonment rates. The reasons for rejection were trifold - insufficient functionality of the hardware, fragile design, and cumbersome control. In the last decade, both academia and industry have reached major improvements concerning technical features of upper limb prosthetics and methods for their interfacing and control. Advanced robotic hands are offered by several vendors and research groups, with a variety of active and passive wrist options that can be articulated across several degrees of freedom. Nowadays, elbow joint designs include active solutions with different weight and power options. Control features are getting progressively more sophisticated, offering options for multiple sensor integration and multi-joint articulation. Latest developments in socket designs are capable of facilitating implantable and multiple surface electromyography sensors in both traditional and osseointegration-based systems. Novel surgical techniques in combination with modern, sophisticated hardware are enabling restoration of dexterous upper limb functionality. This article is aimed at reviewing the latest state of the upper limb prosthetic market, offering insights on the accompanying technologies and techniques. We also examine the capabilities and features of some of academia's flagship solutions and methods.
Collapse
Affiliation(s)
- Ivan Vujaklija
- Institute of Neurorehabilitation Systems, Bernstein Focus Neurotechnology Göttingen, University Medical Center Göttingen, Georg-August University, Göttingen, Germany
| | - Dario Farina
- Institute of Neurorehabilitation Systems, Bernstein Focus Neurotechnology Göttingen, University Medical Center Göttingen, Georg-August University, Göttingen, Germany
| | - Oskar C Aszmann
- Christian Doppler Laboratory for Restoration of Extremity Function, Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria,
| |
Collapse
|
22
|
Mishra SK, Chowdhary R, Chrcanovic BR, Brånemark PI. Osseoperception in Dental Implants: A Systematic Review. J Prosthodont 2016; 25:185-95. [PMID: 26823228 DOI: 10.1111/jopr.12310] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2014] [Indexed: 11/28/2022] Open
Abstract
PURPOSE Replacement of lost teeth has significant functional and psychosocial effects. The capability of osseointegrated dental implants to transmit a certain amount of sensibility is still unclear. The phenomenon of developing a certain amount of tactile sensibility through osseointegrated dental implants is called osseoperception. The aim of this article is to evaluate the available literature to find osseoperception associated with dental implants. MATERIALS AND METHODS To identify suitable literature, an electronic search was performed using Medline and PubMed database. Articles published in English and articles whose abstract is available in English were included. The articles included in the review were based on osseoperception, tactile sensation, and neurophysiological mechanoreceptors in relation to dental implants. Articles on peri-implantitis and infection-related sensitivity were not included. Review articles without the original data were excluded, although references to potentially pertinent articles were noted for further follow-up. The phenomenon of osseoperception remains a matter of debate, so the search strategy mainly focused on articles on osseoperception and tactile sensibility of dental implants. This review presents the histological, neurophysiological, and psychophysical evidence of osseoperception and also the role of mechanoreceptors in osseoperception. RESULTS The literature on osseoperception in dental implants is very scarce. The initial literature search resulted in 90 articles, of which 81 articles that fulfilled the inclusion criteria were included in this systematic review. CONCLUSION Patients restored with implant-supported prostheses reported improved tactile and motor function when compared with patients wearing complete dentures.
Collapse
Affiliation(s)
- Sunil Kumar Mishra
- Department of Maxillofacial Prosthodontics and Implantology, Peoples Dental Academy, Bhopal, India
| | - Ramesh Chowdhary
- Department of Prosthodontics and Maxillofacial Implantology, Rajarajeshwari Dental College and Hospital, Bangalore, India
| | | | | |
Collapse
|
23
|
Bhatnagar VM, Karani JT, Khanna A, Badwaik P, Pai A. Osseoperception: An Implant Mediated Sensory Motor Control- A Review. J Clin Diagn Res 2015; 9:ZE18-20. [PMID: 26501033 DOI: 10.7860/jcdr/2015/14349.6532] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 06/23/2015] [Indexed: 11/24/2022]
Abstract
Osseointegration of dental implants has been researched extensively, covering various aspects such as bone apposition, biomechanics and microbiology etc however, physiologic integration of implants and the associated prosthesis in the body has received very little attention. This integration is due to the development of a special sensory ability, which is able to restore peripheral sensory feedback mechanism. The underlying mechanism of this so-called 'osseoperception' phenomenon remains a matter of debate. The following article reveals the histological, neurophysiologic and psychophysical aspects of osseoperception. A comprehensive research to provide scientific evidence of osseoperception was carried out using various online resources such as Pubmed, Google scholar etc to retrieve studies published between 1985 to 2014 using the following keywords: "osseoperception", "mechanoreceptors", "tactile sensibility". Published data suggests that a peripheral feedback pathway can be restored with osseointegrated implants. This implant-mediated sensory-motor control may have important clinical implications in the normal functioning of the implant supported prosthesis.
Collapse
Affiliation(s)
- Vishrut Mohan Bhatnagar
- Lecturer, Department of Prosthodontics, Terna Dental College and Hospital , Maharashtra, India
| | - Jyoti T Karani
- Professor and HOD, Department of Prosthodontics, Terna Dental College and Hospital , Maharashtra, India
| | - Anshul Khanna
- Reader, Department of Prosthodontics, Terna Dental College and Hospital , Maharashtra, India
| | - Praveen Badwaik
- Reader, Department of Prosthodontics, Terna Dental College and Hospital , Maharashtra, India
| | - Ashutosh Pai
- Lecturer, Department of Prosthodontics, Terna Dental College and Hospital , Maharashtra, India
| |
Collapse
|
24
|
Häggström E, Hagberg K, Rydevik B, Brånemark R. Vibrotactile evaluation: osseointegrated versus socket-suspended transfemoral prostheses. ACTA ACUST UNITED AC 2015; 50:1423-34. [PMID: 24699977 DOI: 10.1682/jrrd.2012.08.0135] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 06/18/2013] [Indexed: 11/05/2022]
Abstract
This study investigated detection thresholds of vibrometric stimuli in patients with transfemoral amputation supplied with osseointegrated (OI) and socket-suspended prostheses. It included 17 patients tested preoperatively with socket-suspended prostheses and after 2 yr with OI prostheses and a control group (n = 17) using socket-suspended prostheses, evaluated once. Assessments on the prosthetic and intact feet were conducted at six frequencies (8, 16, 32, 64, 125, and 250 Hz). Furthermore, measurements were conducted to investigate how vibrometric signals are transmitted through a test prosthesis. The results showed that the OI group had improved ability to detect vibrations through the prosthesis at 125 Hz (p = 0.01) at follow-up compared with the preoperative measurement. Compared with the control group, the OI group at follow-up had better ability to detect high frequency vibrations through the prosthesis (125 Hz, p = 0.02; 250 Hz, p = 0.03). The vibrometric signal transmitted through the test prosthesis was reduced at 8, 125, and 250 Hz but was amplified at 16, 32, and 64 Hz. Differences between the OI and the control groups were found in the highest frequencies in which the test prosthesis showed reduction of the vibrometric signal. The study provides insight into the mechanisms of vibration transmission between the exterior and bone-anchored as well as socket-suspended amputation prostheses.
Collapse
Affiliation(s)
- Eva Häggström
- Department of Prosthetics and Orthotics, University of Gothenburg, Sahlgrenska University Hospital, Falkenbergsgatan 3, SE 412 85 Gothenburg, Sweden.
| | | | | | | |
Collapse
|
25
|
Oral somatosensory awareness. Neurosci Biobehav Rev 2014; 47:469-84. [DOI: 10.1016/j.neubiorev.2014.09.015] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 09/03/2014] [Accepted: 09/10/2014] [Indexed: 12/19/2022]
|
26
|
Termsarasab P, Tanenbaum DR, Frucht SJ. The phenomenology and natural history of idiopathic lower cranial dystonia. JOURNAL OF CLINICAL MOVEMENT DISORDERS 2014; 1:3. [PMID: 26788329 PMCID: PMC4676493 DOI: 10.1186/2054-7072-1-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/07/2014] [Indexed: 12/12/2022]
Abstract
Background Many patients with lower cranial dystonia (LCrD) are misdiagnosed, and recognition of this condition by general practitioners and dental health professionals is limited. Methods We define the phenomenology and natural history of idiopathic LCrD, presenting in 41 patients with the disorder, the largest series of these patients reported to date. Results Phenomenology of dystonia included lower cranial and pharyngeal involvement, jaw opening and jaw closing dystonia, and tongue dystonia. Of 25 newly described patients, 72% (18) were female, average age at onset was 56 years, and delay before correct diagnosis was 3.8 years (0-25 years, median 2 years). Eleven patients (44%) reported a precipitating event, the most common of which was recent dental work. Geste antagonistes were found in 18 patients (72%). Response to treatment was mixed, indicating an unmet therapeutic need. Conclusions Idiopathic LCrD is often missed and institution of effective therapy is often delayed. The clinical features and natural history of LCrD are similar to other forms of focal dystonia. Electronic supplementary material The online version of this article (doi:10.1186/2054-7072-1-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Pichet Termsarasab
- Department of Neurology, Movement Disorders Division, Icahn School of Medicine at Mount Sinai, 5 East 98th St, first floor, New York, NY 10029 USA
| | - Donald R Tanenbaum
- Department of Neurology, Movement Disorders Division, Icahn School of Medicine at Mount Sinai, 5 East 98th St, first floor, New York, NY 10029 USA
| | - Steven J Frucht
- Department of Neurology, Movement Disorders Division, Icahn School of Medicine at Mount Sinai, 5 East 98th St, first floor, New York, NY 10029 USA
| |
Collapse
|
27
|
Higaki N, Goto T, Ishida Y, Watanabe M, Tomotake Y, Ichikawa T. Do sensation differences exist between dental implants and natural teeth?: a meta-analysis. Clin Oral Implants Res 2013; 25:1307-1310. [DOI: 10.1111/clr.12271] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Nobuaki Higaki
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| | - Takaharu Goto
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| | - Yuichi Ishida
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| | - Megumi Watanabe
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| | - Yoritoki Tomotake
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| | - Tetsuo Ichikawa
- Department of Oral and Maxillofacial Prosthodontics and Oral Implantology; Institute of Health Biosciences; The University of Tokushima; Tokushima Japan
| |
Collapse
|
28
|
Uppal S, Gupta NK, Tandan A, Dwivedi R, Gupta S, Kumar S. Comparative evaluation of vertical dimension at rest before extraction, after extraction and after rehabilitation with complete denture - A Cephalometric study. J Oral Biol Craniofac Res 2013; 3:73-7. [PMID: 25737888 DOI: 10.1016/j.jobcr.2013.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 04/06/2013] [Indexed: 10/26/2022] Open
Abstract
INTRODUCTION The determination of physiologic rest position of the mandible to the maxillae is of paramount importance in almost all fields of dentistry. The stability of vertical dimension at rest has been controversial if the rest position of mandible remains constant throughout life or not. Despite of several studies on the rest position of the mandible and facial vertical dimension, certain fundamental disagreements remain unresolved. The present study aims to compare the vertical dimension at rest, before and after extraction and after rehabilitation with complete denture. MATERIAL & METHODS This study was conducted in a total of ten randomly selected patients, who had some natural teeth present with one or more opposing posterior teeth with vertical occlusal stops but were advised for extraction because of poor prognosis. Digital lateral cephalograms were done and measurements recorded at three stages: prior to extraction of remaining natural teeth, post extraction and after complete denture rehabilitation. RESULTS Vertical dimension at rest was found to be greatest in post rehabilitation followed by pre-extraction than post extraction state. The differences in changes were found to be statistically significant. CONCLUSION Vertical dimension at rest shows a decrease following extraction of natural teeth, the occlusal stops, and an increase on rehabilitation. It can be stated that vertical dimension at rest is not stable position and varies following extraction of natural teeth and rehabilitation.
Collapse
Affiliation(s)
- Saurabh Uppal
- Junior Resident, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| | - N K Gupta
- Professor, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| | - Amrit Tandan
- Head & Professor, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| | - Ravi Dwivedi
- Professor, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| | - Swati Gupta
- Professor, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| | - Sulabh Kumar
- Senior Lecturer, Department of Prosthodontics, Babu Banarsi Das College of Dental Sciences, Lucknow, India
| |
Collapse
|
29
|
|
30
|
Meyer G, Fanghänel J, Proff P. Morphofunctional aspects of dental implants. Ann Anat 2011; 194:190-4. [PMID: 22137145 DOI: 10.1016/j.aanat.2011.09.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 09/12/2011] [Accepted: 09/27/2011] [Indexed: 10/16/2022]
Abstract
Although oral implantology is among the most beneficial developments of modern dentistry, the widely spread opinion that the long-term outcome of implants is superior to that of natural teeth has been refuted. To evade uncritical extractions, the morphofunctional properties of natural teeth and implant-supported restorations are compared from a proprioceptive and occlusal trauma perspective. The periodontal ligament of natural teeth provides the central nerve system with feedback for sensory perception and motor control. Conversely, the lack of such proprioception causes lower tactile sensitivity and less coordinated masticatory muscle activity in implant-borne restorations and makes them more prone to occlusal overload and possible subsequent failure. Moreover, occlusal anomalies may be conducive to parafunctional activity, craniomandibular disorder, tinnitus, and headache. Oral implantology, therefore, has to take appropriate account of occlusal conditions and the biomechanical and neuromuscular aspects of masticatory function.
Collapse
Affiliation(s)
- Georg Meyer
- Department of Restorative Dentistry and Periodontology and Endodontology, Ernst Moritz Arndt University of Greifswald, Germany
| | | | | |
Collapse
|
31
|
Effect of dental status on changes in mastication in patients with obesity following bariatric surgery. PLoS One 2011; 6:e22324. [PMID: 21799822 PMCID: PMC3140511 DOI: 10.1371/journal.pone.0022324] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 06/25/2011] [Indexed: 11/20/2022] Open
Abstract
Background Patients scheduled for bariatric surgery (BS) are encouraged to chew slowly in order to optimise the digestion process. The influence of dental status on patients' ability to comply with advice on chewing behaviour is poorly documented. This study aims to compare modifications of chewing function before and after BS in three groups of obese patients differing in dental status. Method and Findings A cohort of 46 obese women provided three groups: FD group: fully dentate (7–10 functional dental units [FU]); PD group: partially dentate (4–6 FU) without partial dentures; DW group: partial and complete denture wearers. Chewing time (CT), number of chewing cycles (CC), and chewing frequency (CF) were measured before and after surgery during mastication of standardised samples of raw carrot, peanuts, banana, apple and jelly. The median particle-size distribution (D50) of the pre-swallowed bolus was also evaluated for peanut and carrot. Before surgery, the PD and DW groups exhibited greater mean CCs and CTs than the FD group (SNK p<0.05) and produced a bolus with higher granulometry (SNK, p<0.05) than the FD group. After surgery, CT and CC increased for all groups and for all foods, but not statistically significant for jelly. The resulting changes in bolus granulometry observed depended on both food and dental status. The granulometry of carrot bolus remained as fine or as coarse in FD and DW groups respectively as it was before surgery while it was significantly decreased in the PD group (Student's test, p<0.001). Conclusions After bariatric surgery, all the obese patients, regardless of dental status modified their chewing kinematics. The effects of this chewing behaviour on bolus granulometry depended on dental status and type of food. Further studies are needed to understand better the impact of dental status on feeding behaviour and nutrition in patients with obesity.
Collapse
|
32
|
|
33
|
Enkling N, Heussner S, Nicolay C, Bayer S, Mericske-Stern R, Utz KH. Tactile Sensibility of Single-Tooth Implants and Natural Teeth Under Local Anesthesia of the Natural Antagonistic Teeth. Clin Implant Dent Relat Res 2009; 14:273-80. [DOI: 10.1111/j.1708-8208.2009.00252.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Morris MF, Kirkpatrick TC, Rutledge RE, Schindler WG. Comparison of Nonsurgical Root Canal Treatment and Single-tooth Implants. J Endod 2009; 35:1325-30. [DOI: 10.1016/j.joen.2009.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 07/06/2009] [Accepted: 07/12/2009] [Indexed: 10/20/2022]
|
35
|
Habre-Hallage P, Abboud-Naaman NB, Reychler H, van Steenberghe D, Jacobs R. Perceptual changes in the peri-implant soft tissues assessed by directional cutaneous kinaesthesia and graphaesthesia: a prospective study. Clin Implant Dent Relat Res 2009; 13:296-304. [PMID: 19673925 DOI: 10.1111/j.1708-8208.2009.00215.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The innervation of skin and oral mucosa plays a major physiological role in exteroception. This innervation is also clinically relevant as sensory changes occur after neurosurgical procedures. PURPOSE The goal of this study was to compare the perception of mechanical stimuli applied to the buccal mucosa in the vicinity of osseointegrated oral implants with that in the controlateral dentate side. The role of the previously reported increased innervation in the peri-implant soft tissues in the oral sensorimotor function was thus examined. MATERIALS AND METHODS Seventeen subjects with 20 implants were tested. Directional cutaneous kinaesthesia (DCK) and graphesthesia (G) were performed on the buccal side of the alveolar mucosa before and at planned intervals after implant placement. The observation was pursued until 6 months after the prosthetic rehabilitation. In each subject, the contralateral mucosa served as a control to the implant sites. Average percentages of correct responses in a four-choice task for DCK and a three-choice task for G were calculated. RESULTS Despite an intersubject variation in both the DCK and G, high intraindividual correlations were found (p < .005). The implant sites showed a significant difference toward the control sites at the four interval test for both tests. For DCK and G, the average of correct responses decreased after abutment connection (i.e., after the implant uncovering surgery) to increase afterwards to reach a level close to, but still lower than, the control sites 3 to 6 months after the prosthetic rehabilitation. CONCLUSION The DCK and G are simple but reliable sensory tests that can be easily applied in the oral region. This prospective study indicates that tooth loss reduces tactile function compared with implant-supported prostheses. The peri-implant soft tissues could be partially involved in the osseoperception function.
Collapse
Affiliation(s)
- Pascale Habre-Hallage
- Department of Prosthodontics, Faculty of Dentistry, Saint-Joseph University, Campus of Medical Sciences, Damascus Road, Beirut, Lebanon.
| | | | | | | | | |
Collapse
|
36
|
Habre-Hallage P, Bou Abboud-Naman N, Reychler H, van Steenberghe D, Jacobs R. Assessment of changes in the oral tactile function of the soft tissues by implant placement in the anterior maxilla: a prospective study. Clin Oral Investig 2009; 14:161-8. [DOI: 10.1007/s00784-009-0272-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 03/09/2009] [Accepted: 03/19/2009] [Indexed: 10/20/2022]
|
37
|
de Souza RF, Marra J, Pero AC, Regis RR, Compagnoni MA, Paleari AG. Maxillary complete denture movement during chewing in mandibular removable partial denture wearers. Gerodontology 2009. [DOI: 10.1111/j.1741-2358.2008.00259.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
38
|
Yan C, Ye L, Zhen J, Ke L, Gang L. Neuroplasticity of edentulous patients with implant-supported full dentures. Eur J Oral Sci 2008; 116:387-93. [DOI: 10.1111/j.1600-0722.2008.00557.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
39
|
de Souza RF, Marra J, Pero AC, Regis RR, Compagnoni MA, Paleari AG. Maxillary complete denture movement during chewing in mandibular removable partial denture wearers. Gerodontology 2008; 26:19-25. [PMID: 18710401 DOI: 10.1111/j.1741-2358.2008.00248.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To evaluate the pattern of maxillary complete denture movement during chewing for free-end removable partial dentures (RPD) wearers, compared to maxillary and mandibular complete denture wearers. MATERIALS AND METHODS Eighteen edentulous participants (group I) and 10 volunteers with bilateral posterior edentulous mandibles (group II) comprised the sample. Measures of mean denture movement and its variability were obtained by a kinesiographic instrument K6-I Diagnostic System, during the mastication of bread and a polysulphide block. Data were analysed using two-way ANOVA (alpha = 0.05). RESULTS Upper movement during chewing was significantly lower for group II, regardless of the test food. The test food did not influence the vertical or lateral position of the denture bases, but more anterior dislocation was found when polysulphide blocks were chewed. Group II presented lower intra-individual variability for the vertical axis. Vertical displacement was also more precise with bread as a test food. CONCLUSION It can be concluded that mandibular free-end RPD wearers show smaller and more precise movements than mandibular complete denture wearers.
Collapse
Affiliation(s)
- Raphael Freitas de Souza
- Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo, SP, Brazil
| | | | | | | | | | | |
Collapse
|
40
|
|
41
|
Abstract
An assessment of whether to rehabilitate a tooth requiring endodontic treatment or to replace it with a dental implant can often involve a challenging and complex decision-making process. This paper reviews the literature pertaining to both treatment modalities and identifies key issues that need careful consideration in planning the most appropriate course of care in a given clinical situation. A need to appreciate advances across both disciplines is highlighted, allowing the development of effective interdisciplinary evidence-based treatment strategies to maximize treatment outcome.
Collapse
Affiliation(s)
- V John
- School of Dental Science, The University of Melbourne, Victoria
| | | | | |
Collapse
|
42
|
Klineberg I, Kingston D, Murray G. The bases for using a particular occlusal design in tooth and implant-borne reconstructions and complete dentures. Clin Oral Implants Res 2007; 18 Suppl 3:151-67. [PMID: 17594379 DOI: 10.1111/j.1600-0501.2007.01446.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES A systematic review identified randomised and other trials (1966-2006) of studies of occlusal design of crowns, complete (CRP) and partial (PRP) removable prostheses and implant-borne reconstructions, and whether occlusal design influenced diet, quality of life, bruxism and attrition. METHODS The search primarily included Cochrane Database of Systematic Reviews and Central Register of Controlled Trials, Database of Abstracts of Reviews of Effectiveness, Ovid Medline and PreMedline. RESULTS The search yielded 1315 studies: 20 on CRP--1 RCT, one systematic review, four clinical trials, 10 case series; 22 on PRP - one cohort study, two experimental studies, 15 case reports or case series, three clinical trials; 23 on implant superstructures, and 24 reports on implant failure, 37 on oral health related quality of life, eight on attrition; and four studies on masticatory function. CONCLUSIONS CRP--Studies of occlusal form and tooth arrangements, included balanced, lingualised and monoplane arrangements--lingualised posterior occlusion was preferred. Early studies on CRP design were observational as case reports, however data suggested that optimum function is achieved by modification of the maxillary occlusion, irrespective of the opposing mandibular occlusion. PRP--Edentulous ridge resorption is patient-specific, has a multifactorial aetiology and there is no objective data to confirm that mechanical factors cause bone loss; oral hygiene management is crucial for long-term health. Studies on distal extension PDs confirmed a link between bite force and masticatory function; preservation of two functioning posterior tooth units ipsilateral to the distal extension optimises function. Data indicate that patient-specific factors, rather than PD design-specific features, influence long-term PD outcomes. Implant superstructures--There is little scientific evidence specifying occlusal and superstructure design for fixed prostheses for teeth or implants. Occlusal scheme design and occlusal form have evolved through clinical experience, but there is no evidence to indicate that a particular design is superior. Complex neurophysiological mechanisms allow the jaw muscle system to accommodate to oral and dental changes.
Collapse
Affiliation(s)
- Iven Klineberg
- Centre for Oral Health, Faculty of Dentistry, University of Sydney, Westmead Hospital, Westmead, Australia.
| | | | | |
Collapse
|
43
|
Iyengar S, Qi HX, Jain N, Kaas JH. Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. J Comp Neurol 2007; 501:95-120. [PMID: 17206603 DOI: 10.1002/cne.21232] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Connections of representations of the teeth and tongue in primary somatosensory cortex (area 3b) and adjoining cortex were revealed in owl, squirrel, and marmoset monkeys with injections of fluorescent tracers. Injection sites were identified by microelectrode recordings from neurons responsive to touch on the teeth or tongue. Patterns of cortical label were related to myeloarchitecture in sections cut parallel to the surface of flattened cortex, and to coronal sections of the thalamus processed for cytochrome oxidase (CO). Cortical sections revealed a caudorostral series of myelin dense ovals (O1-O4) in area 3b that represent the periodontal receptors of the contralateral teeth, the contralateral tongue, the ipsilateral teeth, and the ipsilateral tongue. The ventroposterior medial subnucleus, VPM, and the ventroposterior medial parvicellular nucleus for taste, VPMpc, were identified in the thalamic sections. Injections placed in the O1 oval representing teeth labeled neurons in VPM, while injections in O2 representing the tongue labeled neurons in both VPMpc and VPM. These injections also labeled adjacent part of areas 3a and 1, and locations in the lateral sulcus and frontal lobe. Callosally, connections of the ovals were most dense with corresponding ovals. Injections in the area 1 representation of the tongue labeled neurons in VPMpc and VPM, and ipsilateral area 3b ovals, area 3a, opercular cortex, and cortex in the lateral sulcus. Contralaterally, labeled neurons were mostly in area 1. The results implicate portions of areas 3b, 3a, and 1 in the processing of tactile information from the teeth and tongue, and possibly taste information from the tongue.
Collapse
Affiliation(s)
- Soumya Iyengar
- National Brain Research Centre, Deemed University, 122050, Haryana, India
| | | | | | | |
Collapse
|
44
|
Enkling N, Nicolay C, Utz KH, Jöhren P, Wahl G, Mericske-Stern R. Tactile sensibility of single-tooth implants and natural teeth. Clin Oral Implants Res 2007; 18:231-6. [PMID: 17348888 DOI: 10.1111/j.1600-0501.2006.01321.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM The purpose of this randomized split-mouth clinical trial was to determine the active tactile sensibility between single-tooth implants and opposing natural teeth and to compare it with the tactile sensibility of pairs of natural teeth on the contralateral side in the same mouth (intraindividual comparison). MATERIAL AND METHODS The hypothesis was that the active tactile sensibilities of the implant side and control side are equivalent. Sixty two subjects (n=36 from Bonn, n=26 from Bern) with single-tooth implants (22 anterior and 40 posterior dental implants) were asked to bite on narrow copper foil strips varying in thickness (5-200 microm) and to decide whether or not they were able to identify a foreign body between their teeth. Active tactile sensibility was defined as the 50% threshold of correct answers estimated by means of the Weibull distribution. RESULTS The results obtained for the interocclusal perception sensibility differed between subjects far more than they differed between natural teeth and implants in the same individual [implant/natural tooth: 16.7+/-11.3 microm (0.6-53.1 microm); natural tooth/natural tooth: 14.3+/-10.6 microm (0.5-68.2 microm)]. The intraindividual differences only amounted to a mean value of 2.4+/-9.4 microm (-15.1 to 27.5 microm). The result of our statistical calculations showed that the active tactile sensibility of single-tooth implants, both in the anterior and posterior region of the mouth, in combination with a natural opposing tooth is similar to that of pairs of opposing natural teeth (double t-test, equivalence margin: +/-8 microm, P<0.001, power >80%). Hence, the implants could be integrated in the stomatognathic control circuit.
Collapse
Affiliation(s)
- Norbert Enkling
- Department of Prosthetic Dentistry, University of Bonn, Bonn, Germany.
| | | | | | | | | | | |
Collapse
|
45
|
Abstract
This article provides a review of somatosensory and motor pathways and processes involved in oral sensorimotor function and dysfunction. It reviews somatosensory processes in peripheral tissues, brainstem and higher brain centres such as thalamus and cerebral cortex, with a particular emphasis on nociceptive mechanisms. It also outlines some of the circuits and processes involved in reflexes and motor control. In addition, it emphasizes the concept of neuroplasticity and its applicability to oro-facial pain, to motor control and motor learning, and to adaptation to changes in the oral sensory environment such as may occur with the placement of dental implants.
Collapse
Affiliation(s)
- B J Sessle
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|
46
|
Abarca M, Van Steenberghe D, Malevez C, Jacobs R. The neurophysiology of osseointegrated oral implants. A clinically underestimated aspect. J Oral Rehabil 2006; 33:161-9. [PMID: 16512881 DOI: 10.1111/j.1365-2842.2005.01556.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amputation of a limb or a tooth leads to the loss of a large number of exteroceptors. These play an important role in sensory perception and feedback, which tune the motor control. Even after rehabilitation with a prosthetic device, tactile function remains impaired. This can present a subsequent risk of overloading the prosthesis. The peri-implant interface of oral osseointegrated implants is characterized by the absence of a periodontal ligament, a crucial difference towards the natural dentition, from a biomechanical but also from a neurophysiologic point of view. Patients rehabilitated with osseointegrated implants seem subjectively not much impaired in their masticatory and other oral functions. This observation might be linked to the presence of some peripheral feedback pathway to the sensory cortex. It may be attributed to the activation of receptors in the peri-implant environment (either bone or periosteum). This phenomenon called osseoperception, when it relates to the consciousness of the applied stimuli, has been described for both oral and skeletal implants. In the present review, besides osseoperecption other neurophysiological aspects of oral implants, such their reflex function, will be outlined and their clinical meaning pointed out.
Collapse
Affiliation(s)
- M Abarca
- Laboratory of Oral Physiology, Department of Periodontology, Faculty of Medicine, Catholic University Leuven, Belgium
| | | | | | | |
Collapse
|
47
|
Alajbeg IZ, Valentic-Peruzovic M, Alajbeg I, Cifrek M. The influence of age and dental status on elevator and depressor muscle activity. J Oral Rehabil 2006; 33:94-101. [PMID: 16457668 DOI: 10.1111/j.1365-2842.2006.01541.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The objective of this study was to determine whether the muscle activity at various mandibular positions is affected by age and dental status. Thirty edentulous subjects (E), 20 young dentate individuals (G1) and 20 older dentate individuals (G2) participated in this study. Surface electromyographic (EMG) recordings were obtained from the anterior temporal (T), masseter (M) and depressor muscles (D). Muscle activity was recorded during maximal voluntary contraction (MVC), maximal opening (O(max)) and in six different mandibular positions. One way anova and the Bonferroni tests were used to determine the differences between groups. Significant differences between the three tested groups were found at MVC and O(max) for all examined muscles (P < 0.001). The differences in muscle activity in dentate subjects of different age were found in protrusion for depressor muscles (P < 0.05) and in lateral excursive positions for the working side temporal (P < 0.05) and non-working side masseter and depressor muscle (P < 0.05). There was a significant effect regarding the presence of natural teeth or complete dentures in protrusion and maximal protrusion for all muscles (P < 0.05) and in lateral excursive positions for non-working side temporal (P < 0.05) and working side masseter muscle (P < 0.05). Muscle activity at various mandibular positions depends greatly on the presence of the prosthetic appliance, as edentulous subjects had to use higher muscle activity levels (percentages of maximal EMG value) than age matched dentate subjects in order to perform same mandibular movement. Different elevator muscles were preferentially activated in the edentulous subjects when compared with dentate group in lateral excursive positions of the mandible. The pattern of relative muscle activity was not changed because of ageing.
Collapse
Affiliation(s)
- I Z Alajbeg
- Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
| | | | | | | |
Collapse
|
48
|
Bucca C, Cicolin A, Brussino L, Arienti A, Graziano A, Erovigni F, Pera P, Gai V, Mutani R, Preti G, Rolla G, Carossa S. Tooth loss and obstructive sleep apnoea. Respir Res 2006; 7:8. [PMID: 16417639 PMCID: PMC1368974 DOI: 10.1186/1465-9921-7-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2005] [Accepted: 01/17/2006] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Complete tooth loss (edentulism) produces anatomical changes that may impair upper airway size and function. The aim of this study was to evaluate whether edentulism favours the occurrence of obstructive sleep apnoea (OSA). METHODS Polysomnography was performed in 48 edentulous subjects on two consecutive nights, one slept with and the other without dentures. Upper airway size was assessed by cephalometry and by recording forced mid-inspiratory airflow rate (FIF50). Exhaled nitric oxide (eNO) and oral NO (oNO), were measured as markers of airway and oropharyngeal inflammation. RESULTS The apnoea/hypopnoea index (AHI) without dentures was significantly higher than with dentures (17.4 +/- 3.6 versus 11.0 +/- 2.3. p = 0.002), and was inversely related to FIF50 (p = 0.017) and directly related to eNO (p = 0.042). Sleeping with dentures, 23 subjects (48%) had an AHI over 5, consistent with OSA, but sleeping without dentures the number of subjects with abnormal AHI rose to 34 (71%). At cephalometry, removing dentures produced a significant decrease in retropharyngeal space (from 1.522 +/- 0.33 cm to 1.27 +/- 0.42 cm, p = 0.006). Both morning eNO and oNO were higher after the night slept without dentures (eNO 46.1 +/- 8.2 ppb versus 33.7 +/- 6.3 ppb, p = 0.035, oNO 84.6 +/- 13.7 ppb versus 59.2 +/- 17.4 ppb, p = 0.001). CONCLUSION These findings suggest that complete tooth loss favours upper airway obstruction during sleep. This untoward effect seems to be due to decrease in retropharyngeal space and is associated with increased oral and exhaled NO concentration.
Collapse
Affiliation(s)
- Caterina Bucca
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | - Alessandro Cicolin
- Sleep Medicine Center, Department of Neurosciences, University of Turin, Italy and IRCCS Ist. Auxologico Italiano
| | - Luisa Brussino
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | - Andrea Arienti
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | | | - Francesco Erovigni
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | - Paolo Pera
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | | | - Roberto Mutani
- Sleep Medicine Center, Department of Neurosciences, University of Turin, Italy and IRCCS Ist. Auxologico Italiano
| | - Giulio Preti
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | - Giovanni Rolla
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| | - Stefano Carossa
- Department of Biomedical Sciences and Human Oncology, University of Turin, Italy
| |
Collapse
|
49
|
Klineberg I. Introduction: from osseointegration to osseoperception. The functional translation. Clin Exp Pharmacol Physiol 2005; 32:97-9. [PMID: 15730442 DOI: 10.1111/j.1440-1681.2005.04135.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Iven Klineberg
- Westmead Centre for Oral Health, University of Sydney, Westmead Hospital, Westmead, NSW Australia
| |
Collapse
|
50
|
Calford MB. Degree of adaptability of the somatosensory cortex to change: Prospects for integration of bone-mounted dental prostheses. Clin Exp Pharmacol Physiol 2005; 32:115-8. [PMID: 15730445 DOI: 10.1111/j.1440-1681.2005.04138.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
1. The topographic representation of the body surface in the somatosensory cortex provides an important model system for the in vivo study of neuronal plasticity, induced changes in somatotopy providing a direct measure of plasticity not available in most parts of the central nervous system. 2. Over the past two decades, animal experimentation in a number of laboratories has shown a remarkable degree of adaptability of the cortical representation following peripheral lesions and has had a widespread influence by challenging the once-accepted dogma that the brain is a structurally fixed organ. 3. Although some aspects of original stimulation will be missing, it is likely that receptors stimulated through bone conduction and compression by bone-mounted dental prostheses preserve some of the geometric and temporal relationships of original stimulation. By analogy with data obtained from the forearm representations, it would be expected that many features of the original cortical representations will be recreated. 4. There are also examples in the literature of perceptual learning without gross changes to the cortical representation (some being within a class of adaptability known as gain control) and it is likely that perceptual integration of many dental prostheses occurs within the limits of these neural adaptation mechanisms.
Collapse
Affiliation(s)
- Mike B Calford
- School of Biomedical Sciences, University of Newcastle, Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia.
| |
Collapse
|