Abstract：
:Dimensions and velocity of mandibular movement are important variables in the evaluation of masticatory and speech patterns. However, little information is available concerning elderly dentates and their oral motor function and behavior. Double recordings of a chewing period, from start to swallowing, were performed in 14 elderly (mean age, 80 years) and 30 young (mean age, 26 years) dentate subjects chewing crispbread. Three-dimensional records of mandibular movements were obtained by means of the Selspot movement analysis system, which monitors infrared light pulses from light-emitting diodes attached to the test subject. There was no difference in the duration of the total chewing cycle between the two groups. Mandibular velocity was significantly lower in the elderly group, in both the opening and the closing phases. Despite great inter-individual variations, significantly smaller mean vertical displacements of the mandible were found in the elderly than in the younger group. The lateral component in the vertical opening movement was similar for both the elderly and younger subjects. The similar chewing rates in the two groups might imply that the function of the central pattern generator was unaffected by old age. Aging was, however, associated with reduction of vertical mandibular displacement and velocity.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Karlsson S,Carlsson GEdoi
10.1177/00220345900690021101subject
Has Abstractpub_date
1990-02-01 00:00:00pages
473-6issue
2eissn
0022-0345issn
1544-0591journal_volume
69pub_type
杂志文章abstract：:Autoimmune responses to heat-shock protein 60 (HSP60) contribute to the progression of atherosclerosis, whereas immunization with HSP60 may induce atheroprotective responses. We assessed the capacity of an atheroprotective vaccine that targeted a recombinant HSP60 from Porphyromonas gingivalis (rGroEL) to induce a pro...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514523784
更新日期：2014-04-01 00:00:00
abstract：:The objectives of the study were to describe the oral health status and treatment needs of the 5- to 6-year-old and 12-year-old children in Southern China; to describe the patterns of oral health behaviors, knowledge, and attitudes among the 12-year-olds; and to assess the effects of socio-behavioral factors on the 12...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345010800051501
更新日期：2001-05-01 00:00:00
abstract：:Cell therapies utilizing mesenchymal stem cells (MSCs) could overcome limitations of traditional treatments for reconstructing craniofacial tissues. This large-scale study explored a standardized methodology for the isolation and clinical-scale expansion of alveolar bone marrow-derived MSCs (aBMSCs). We harvested 103 ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034513510530
更新日期：2014-01-01 00:00:00
abstract：:The relationship between the serum IgG antibody titer against seven species of Gram-negative periodontopathic bacteria and clinical parameters (including plaque index, gingival index, periodontal pocket depth, and alveolar bone loss) was studied in 38 subjects. IgG antibody titer against the sonicated antigens was det...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345850640111101
更新日期：1985-11-01 00:00:00
abstract：:The purpose of this work was to determine the influence of chemical food-simulating liquids on the wear of various commercial dental composite restoratives. In many cases, pre-conditioning the restoratives in these liquids for one week produced swelling of the polymer matrix and considerable surface damage. The result...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345850640111601
更新日期：1985-11-01 00:00:00
abstract：:The Tp63 gene encodes for multiple isoforms of the p63 transcription factor, a member of the p53 family of proteins. Much like its more famous sibling, the biological role of p63 is quite complex, with wide-ranging effects on development, differentiation, and cellular lineage choices. The crucial function of p63 is ep...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034511411302
更新日期：2012-02-01 00:00:00
abstract：:The aims of this work were (a) to assess the oral bioavailability of fluoride delivered from dentifrices and (b) to test for a possible link between the results and clinical data obtained with the same dentifrices. Oral fluoride concentrations were measured in samples of saliva and plaque taken from seven subjects, af...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章,评审
doi：10.1177/002203459207100S09
更新日期：1992-04-01 00:00:00
abstract：:Hereditary diseases affecting the skeleton are heterogeneous in etiology and severity. Though many of these conditions are individually rare, the total number of people affected is great. These disorders often include dental-oral-craniofacial (DOC) manifestations, but the combination of the rarity and lack of in-depth...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034514529150
更新日期：2014-07-01 00:00:00
abstract：:Few studies have investigated smoking as a risk factor for root canal treatment. We studied the effect of smoking on the incidence of root canal treatment, controlling for recognized risk factors, in 811 dentate male participants in the VA Dental Longitudinal Study. Participants were not VA patients. Follow-up ranged ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910608500406
更新日期：2006-04-01 00:00:00
abstract：:We evaluated the predictive and construct validity of a caries activity assessment system associated with the International Caries Detection and Assessment System (ICDAS) in primary teeth. A total of 469 children were reexamined: participants of a caries survey performed 2 yr before (follow-up rate of 73.4%). At basel...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514531017
更新日期：2014-07-01 00:00:00
abstract：:The tongue exerts crucial functions in our daily life. However, we know very little about the regulatory mechanisms of mammalian tongue development. In this review, we summarize recent findings of the molecular and cellular mechanisms that control tissue-tissue interactions during tongue morphogenesis. Specifically, c...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034511434055
更新日期：2012-06-01 00:00:00
abstract：:The object of the present study was an attempt to relate fluoride concentration in enamel, caries experience, and the degree of fluorosis in a community residing in an area with a high level of fluoride. A significant difference was found between the male and female samples for the F and D parameters. A positive corre...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550012001
更新日期：1976-01-01 00:00:00
abstract：:Tooth enamel is the most highly mineralized tissue in vertebrates. Enamel crystal formation and elongation should be well controlled to achieve an exceptional hardness and a compact microstructure. Enamel matrix calcification occurs with several matrix proteins, such as amelogenin, enamelin, and ameloblastin. Among th...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514547272
更新日期：2014-10-01 00:00:00
abstract：:Based on the existing evidence supporting a state of chronic inflammation in chronic kidney disease (CKD), we hypothesized that periodontal infection may affect the systemic inflammatory status of a nationally representative CKD population as measured by serum C-reactive protein (CRP). We examined this hypothesis usin...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034511423394
更新日期：2011-12-01 00:00:00
abstract：:Secondary palatogenesis occurs when the bilateral palatal shelves (PS), arising from maxillary prominences, fuse at the midline, forming the hard and soft palate. This embryonic phenomenon involves a complex array of morphogenetic events that require coordinated proliferation, apoptosis, migration, and adhesion in the...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034517726284
更新日期：2017-10-01 00:00:00
abstract：:Periodontal ligaments (PDLs) play an important role in remodeling the alveolar bond and cementum. Characterization of the periodontal tissue transcriptome remains incomplete, and an improved understanding of PDL features could aid in developing new regenerative therapies. Here, we aimed to generate and analyze a large...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034516645796
更新日期：2016-08-01 00:00:00
abstract：:Ammoniacal silver stain showed that there was a decrease in nucleohistones in zinc-deficient rat buccal hyperplastic epithelium as compared to control. Autoradiographic study showed that there was decreased incorporation of 3H-arginine and 3H-lysine in the hyperplastic epithelium. ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560122501
更新日期：1977-12-01 00:00:00
abstract：:An intra-oral model system has been developed which uses a single-section technique for before-and-after measurements on the same tissue. This model allows for placement of sections of enamel at both buccal and approximal sites. These sections may be sound or possess white-spot lesions. This allows for the evaluation ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660091401
更新日期：1987-09-01 00:00:00
abstract：:We determined the exposure to mercury from dental amalgam by comparison of blood levels of mercury before and after removal of all amalgams from ten subjects. Baseline concentrations of mercury in whole blood were measured weekly for four to 18 weeks (median = 6.6 weeks) prior to removal. All amalgams were removed in ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345890680050501
更新日期：1989-05-01 00:00:00
abstract：:The accuracy for predicting mesiodistal widths of unerupted permanent canines and premolars from x-rays and their estimations based on the already erupted permanent teeth were tested in a group of Israeli children. The observed posteruptive widths related more closely to predicted values obtained from x-ray measuremen...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560081301
更新日期：1977-08-01 00:00:00
abstract：:The Kubelka-Munk (K-M) theory provides a reflectance model for translucent materials placed on backings of different colors. We hypothesize that Kubelka-Munk (K-M) theoretical diffuse reflectance spectra of dentin and enamel are in good agreement with observed diffuse reflectance. The aim of this study was to measure ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345010800020901
更新日期：2001-02-01 00:00:00
abstract：:Joining a brittle veneer to a strong ceramic core with an adhesive offers potential benefits over current fabrication methods for all-ceramic crowns. We tested the hypothesis that such joining can withstand subsurface radial cracking in the veneer, from enhanced flexure in occlusal loading, as well as in the core. Cri...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910808700408
更新日期：2008-04-01 00:00:00
abstract：:A previously reported technique for staining areas of degradation in dental composite restorations was evaluated in 51 removed restorations. The staining reagent was silver nitrate, which penetrated the degraded subsurface as ionic silver and was subsequently developed into colored deposits of metallic silver. Several...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700031201
更新日期：1991-03-01 00:00:00
abstract：:The bactericidal effect of hexylresorcinol was assessed using bacterial aggregates. Increased drug concentration resulted in decreased survival of bacteria when the aggregates were exposed to hexylresorcinol for at least eight hours. This indicates that this drug may be effective against dental plaque only when availa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580111501
更新日期：1979-11-01 00:00:00
abstract：:PAX9 is a transcription factor expressed in the tooth mesenchyme during tooth morphogenesis. In Pax9-null mice, tooth development is arrested at the bud stage. In humans, heterozygous mutations in PAX9 have been associated with non-syndromic tooth agenesis, predominantly in the molars. Here, we report 2 novel mutation...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034513519801
更新日期：2014-03-01 00:00:00
abstract：:One-step incomplete excavation seals caries-affected dentin under a restoration and appears to be advantageous in the treatment of deep lesions. However, it is impossible to discriminate radiographically between intentionally left, arrested lesions and overlooked or active lesions. This diagnostic uncertainty decrease...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514531291
更新日期：2014-06-01 00:00:00
abstract：:During the maintenance of bone marrow-derived mesenchymal stem cells (BMMSCs), suspended cells are discarded normally. We noted the osteogenic potential of these cells to be like that of anchorage-dependent BMMSCs. Therefore, we characterized suspended BMMSCs from rabbit bone marrow by bioengineering and applied the s...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514548706
更新日期：2014-10-01 00:00:00
abstract：:Submandibular glands from young adult and aged male and female rats have been examined and various descriptive parameters obtained. Several sex differences were observed with tissue from young and old animals. Sex differences were found in the gland contents of DNA, protein, and sialic acid and in some protein compone...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600051501
更新日期：1981-05-01 00:00:00
abstract：:During orofacial tissue development, the anterior and posterior regions of the Meckel's cartilage undergo mineralization, while the middle region undergoes degeneration. Despite the interesting and particular phenomena, the mechanisms that regulate the different fates of Meckel's cartilage, including the effects of bi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520960118
更新日期：2021-02-01 00:00:00
abstract：:Previous studies have shown that fluoride affected the formation of apatite in spontaneous precipitations from unstable calcium phosphate solutions partly through its effect on the stability of such nonapatitic precursors as octacalcium phosphate, Ca8H2(PO4)6.5 H2O. The present study shows that fluoride had a comparab...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590021401
更新日期：1980-02-01 00:00:00
