Ondontecrexis--the effects of rapid decompression on restored teeth.
Explore the source record for details and available documents.
Barotrauma↗
SEARCH · Search PubMed
Results for “Toothache”
Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
The incidence of 'hypersensitive' teeth in the West of Scotland.
Explore the source record for details and available documents.
Adolescent↗
Clinical significance of dental root canal microflora.
OBJECTIVES: Previous work by this group has shown that a significant association exists between pain and the presence of either Prevotella or Peptostreptococcus spp. in dental root canals. The aim of this study was to examine a more extensive series of canals microbiologically, to determine whether any other particular endodontic symptoms or clinical signs showed specific associations with individual bacterial species. METHODS: Seventy root canals were examined microbiologically and clinical data collected to investigate in detail such associations. RESULTS: Of the canals studied, 37 were associated with pain, 49 with tenderness to percussion, 23 with swelling, six with purulent exudate and 57 presented with wet root canals. Anaerobes were isolated from 70.3% of painful canals and from 29.7% of pain-free canals. Significant associations were found between (a) pain and either Prevotella spp. or peptostreptococci, both with P < 0.01; (b) tenderness to percussion and Prevotella spp. (P < 0.01) or anaerobes (P < 0.05); (c) swelling and Eubacterium spp. (P < 0.01), or with Prevotella spp. or Pstr. micros, both with P < 0.05; (d) purulent exudate and any one of F. necrophorum (P < 0.01), Prev. loescheii, Streptoccoccus constellatus or Bacteroides spp. (each P < 0.05); (e) wet canal and facultative anaerobes (P < 0.01), and any one of the genera of Eubacterium, Peptostreptococcus, Prevotella or Propionibacterium (each P < 0.05). CONCLUSION: It was concluded that several different endodontic clinical signs and symptoms are significantly associated with specific bacterial species.
Adult↗
Initial stages in the development of valid criteria for the replacement of amalgam restorations.
OBJECTIVES: Replacement amalgam restorations account for the largest single cost in the General Dental Services in Scotland. There is little practical advice available to practitioners on the maintenance and replacement of amalgam restorations. A distance learning package is being prepared for distribution to general dental practitioners in Scotland and this paper describes the initial stages in the development of the policy statements for the proposed package. METHODS: In the first stage proposals are being developed by a panel of dental academics using a modified Delphi technique. This technique is designed to produce a consensus view. Seventeen statements have been set out by the expert group. RESULTS AND CONCLUSIONS: While agreement was rapidly reached that 'ditching' of amalgam restoration margins did not justify their replacement and that repair was preferable to total replacement, some difficulty was experienced in arriving at a consensus view on the correct management of 'white spot' lesions at restoration margins and dentinal staining adjacent to amalgam restorations. The next stage in the development will be to present these statements to a selected panel of general dental practitioners and to develop their consensus view of the proposals, again using the Delphi technique.
Delphi Technique↗
Neuromagnetic localization of cortical activity evoked by painful dental stimulation in man.
We have recorded cerebral magnetic fields evoked by painful dental stimulation. The field pattern indicates a current source at the upper bank of the anterior Sylvian Fissure, corresponding to the anterior end of the secondary somatosensory cortex. This finding suggests cortical representation of tooth pulp in man. The neuromagnetic technique, allowing the investigation of this cortical area, thus provides a new non-invasive tool for pain research.
Adult↗
Elevation of dental pain threshold induced in man by physical exercise is not reversed by cyproheptadine-mediated suppression of growth hormone release.
The effect of cyproheptadine on growth hormone (GH) secretion and dental pain threshold elevation during physical exercise was studied in healthy human subjects. Different levels of exercise (200-300 W) were produced by a cycle-ergometer. Dental pain thresholds were tested with a constant current pulp tester. In all 6 subjects dental pain thresholds and the heart rate were increased with increasing work load. Cyproheptadine did not have any significant effect on dental pain threshold elevations, although it suppressed the exercise-induced GH release. The results indicate that the exercise-induced dental pain threshold elevation is not based on GH-related stress mechanisms, since cyproheptadine did not reverse the pain threshold elevation.
Adult↗
Medialis dorsalis thalamic unitary response to tooth pulp stimulation and its conditioning by brainstem and limbic activation.
In nembutalized cats tooth pulp stimulation (TPS) was effective in exciting 18% of medialis dorsalis (MD) thalamic units. Facilitation of spontaneous MD unitary discharge followed high frequency stimulation of the lateral amygdala (25%), dorsal hippocampus (22%), mesencephalic reticular formation (20%) and septal nuclei (17%). Conditioning high-frequency stimulation of limbic and reticular structures, strongly facilitated the MD unitary responses to TPS. None of the thalamic neurons involved in nociception seems to project to the cerebral cortex. The conditioning effect on MD response of limbic and reticular stimulation suggests that these central structures may be involved in the modulation of the nociceptive input.
Animals↗
Pain and protopathic sensibility. A reveiw with particular reference to the teeth.
Explore the source record for details and available documents.
Animals↗
A comparison of primary dysmenorrhoea and intrauterine device related pain.
A pain questionnaire designed to measure sensory, affective, evaluative and temporal components of pain was administered to 119 patients with primary dysmenorrhoea and 75 patients with intrauterine device (IUD) related pain. In addition "self-report" information was obtained on the behavioural effects of pain, global ratings and biographical details of these patients. It was found that dysmenorrhoea and IUD related pain were generally similar in nature. This led to the conclusion that IUD insertion does not in general lead to an exacerbation of presenting dysmenorrhoea, nor does it radically alter the type of sensations experienced by the patient. While no differences between patient groups emerged, the implications of the different pain components did vary. Thus, pain intensity scores were reflected in a larger sensory component with IUD users, whereas with dysmenorrhoea the affective component predominated. The results show sufficient consensus in the two patient groups of word adjectives used to describe their pain, to allow the development and evaluation of a rapid card sort system for pain assessment.
Abdomen↗
A new technique for recording of intradental sensory nerve activity in man.
A technique was developed to record intradental sensory nerve activity in man. The method involves permanent fixation of electrodes in dentin thus enabling continuous recordings to be made. Acute as well as long term influences on excitability of sensory nerve endings in the tooth can thus be studied. A coincidence between recorded spike activity and pain sensation was observed.
Cold Temperature↗
Dental dolorimetry for human pain research: methods and apparatus.
Electrical stimulation of human tooth pulp provides a means of safely producing human pain in the laboratory. This paper describes a dolorimetry and data collection system for stimulating volunteers, recording responses and analyzing data. The system allows multilevel stimulation in pseudorandom sequences and analysis of results using the methods of Sensory Decision Theory. It consists of modified commercial equipment, specially designed circuitry, an interface, and a programmable calculator. Fundamental problems and safety considerations for electrical dental stimulation are reviewed. Reliability of stimulation and response measurement is discussed.
Clinical Trials as Topic↗
A validation model for verbal description scaling of human clinical pain.
Twenty-nine subjects used quantified verbal descriptors of sensory intensity (i.e., weak, mild, intense) or unpleasantness (i.e., annoying, unpleasant, distressing) to assess the intensity or unpleasantness of sensations evoked by painful electrical stimulation of the tooth pulp over a broad stimulus range, and by a natural thermal tooth pulp stimulus, cold spray applied to exposed dentin. In addition, subjects matched the intensity or unpleasantness of the sensations evoked by the natural stimulus to that of the electrical stimuli by both the Method of Limits and the Method of Constant Stimuli. Quantified verbal descriptor values of either the sensory intensity or unpleasantness of the electrical stimuli were linearly related to stimulus intensity on a log scale, indicating that the relationships can be described by power functions. The quantified verbal description of the natural thermal stimulus and the intensity of the electrical stimulus directly matched to the thermal stimulus determined the coordinates of the clinical stimulus data point. This point was close to the experimental stimulus power function, indicating that the verbal magnitude of the clinical stimulus is predicted by the verbal magnitude of the specific electrical stimulus intensity that was matched to the clinical stimulus. This consistency supports the validity of the use of quantified verbal descriptors for the assessment of both experimentally controlled noxious stimulation and uncontrolled clinical pain sensations. It also supports the validity of direct matches between clinical and experimental pain sensations and the unpleasantness of these sensations. This procedure provides a useful independent validational paradigm for clinical pain assessment.
Adolescent↗
An electrophysiological study of canine, premolar and molar tooth pulp afferents and their convergence on medullary trigeminal neurons.
The two main aims of this study were (1) to compare the conduction velocities of tooth pulp (TP) afferents innervating the cat canine, premolar and molar teeth and (2) to determine the degree of convergence of afferent input originating in these different teeth on medullary dorsal horn (MDH) neurons. Experiments were conducted on 10 cats anesthetized with chloralose. Single unit extracellular recordings were obtained from the tooth pulp or the MDH. The distribution of conduction velocities of afferents originating in the mandibular and maxillary canines, premolars and mandibular molar were all found to be similar except that the mean conduction velocity of canine afferents was slightly higher than the means for the other teeth. A total of 48 MDH neurons excited by TP stimulation was studied. Most MDH neurons activated by electrical stimulation of one of the TPs could also be activated by stimulation of one or more of the other TPs. In addition to the marked convergence from different teeth, most of the TP-activated neurons also had convergent inputs from facial skin and/or intraoral mucosa.
Animals↗
Memory of dental pain.
The possibility that patients' memory for acute pain is reconstructed over time was tested by comparing the degree of pain remembered 3 months after a dental appointment with both expected and experienced pain, as reported immediately before and after the appointment. As hypothesised, there was a closer association between remembered and expected pain than between remembered and experienced pain, particularly for those patients who scored high on the Dental Anxiety Scale. These results suggest that the accuracy of patients' reports of pain experienced in the past may be suspect, and that dental anxiety may be slow to extinguish because the discrepancy between expected and experienced pain felt at one appointment may not be recalled accurately by anxious patients at their next appointment.
Adolescent↗
Stimulus-response relation of tooth pulp units in rat trigeminal nucleus.
Electrical stimulation of the rat tooth pulp evokes a slow mass potential (SMP) in the trigeminal spinal nucleus. Single units in the SMP field were examined for their stimulus-response relation. The response profile of most single units differed from that of background SMPs in that the former tended to give a greater gradient or exponent when they were approximated by linear or power function, respectively. Most of single units with a short and stable latency could be described rather well by power function, while a majority of units with a longer and unstable latency had a relatively wide dynamic range to varied stimulus intensities and could be approximated more closely by linear function.
Animals↗
Brine shrimp bioassay screening of two medicinal plants used by the Warao: Solanum straminifolium and Virola surinamensis.
Explore the source record for details and available documents.
Animals↗
Dentistry in the emergency department.
Dental problems are commonly seen in the emergency department. Although most emergency physicians have had little formal training in dentistry, the majority of these problems can be diagnosed and treated without the need for emergent dental consultation. The necessary procedures may require initial instruction by a cooperative consultant but are easily learned and well within the scope of practice of the emergency physician. Time invested in familiarization with the diagnosis and treatment of the more common dental problems will be rewarded with patient satisfaction.
Anesthesia, Dental↗
Effect of transcutaneous electrical nerve stimulation for controlling pain associated with orthodontic tooth movement.
Transcutaneous electrical nerve stimulation (TENS) was assessed for its effect on periodontal pain associated with orthodontic separation. Forty-five adult subjects were randomly assigned to a TENS group, a placebo TENS group, and a control group. They were further subdivided into intraoral and extraoral electrode placement, and 1-, 2-, and 3-day treatment duration groups. In each patient orthodontic separators were placed mesial and distal to the upper first molars, bilaterally. Subjects were asked to rate their discomfort every 12 hours for 4 days with a 10 cm visual analogue scale. The results showed a significant decrease in reported pain for those subjects in the TENS group at the 24-, 36-, and 48-hour assessment periods as compared to either the placebo or control group. In the control group postseparation discomfort continued through the 60-hour assessment period. The present study suggests that TENS is an effective nonpharmacologic method of controlling postadjustment tooth pain.
Adult↗