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At least 1,063 records · Page 59Linked to original sources
PubMed1997

Dental erosion associated with soft-drink consumption in young Saudi men.

This study reports on the causative factors of dental erosion in selected high- (n = 19) and low-erosion (n = 19) subgroups of a larger random sample (n = 95) of young male Saudi military inductees. By means of a questionnaire, the role of various possible factors related to oral health in general, and to dental erosion in particular, was assessed for each participant. Clinical examination included recordings of severity of dental erosion and fluorosis, presence of buccal cervical defects and first permanent molar 'cuppings', DMFT and DMFS, visible plaque index, and gingival bleeding index. In addition, bitewing radiographs, study casts, and intraoral color transparencies were obtained for each individual. Logistic regression analysis showed a strong correlation between the presence of dental erosion and a high level of consumption of cola-type soft drinks. Other statistically significant associated factors, although of less predictive strength, were type of cleaning aid and gingival bleeding index. In subgroup comparisons, dental problems (primarily pain), number of buccal cervical defects, and number of missing teeth were significantly greater in the high- than in the low-erosion subgroup.

Adult↗
PubMed1983

Cortical power spectral analysis of acute pathophysiological pain.

In the past decade, advances in quantitative EEG methods, such as the analysis of cortical power spectrum, have proven a useful tool for observing changes in brain activity as a function of physiological and behavioral states. The cortical power spectrum (CPS) is a computer-derived analysis of brain electrical activity using mathematical principles of Fast Fourier Transform function. The total energy output of specific cortical areas can be estimated over time, as a function of EEG spectral frequencies. This report describes the study of CPS in pathophysiological pain patients, using acute dental pain as a model. Seven "walk-in" acute pain patients in an emergency dental clinic were recorded during 10 min of pain, before treatment. Approximately one week later, 10 min recordings during nonpain states were obtained as control. Subjective pain scales and other psychological measures were administered to all subjects before and after recording on each visit. Each 10 min stage of continuous CPS recording consisted of 10 spectra per stage, 6 epochs/spectrum, and 10.24 sec/epoch; each spectrum was stored, averaged, transformed, displayed, printed, and plotted by the Pain Microcomputer System. Results show significant cortical power reduction along all frequency bands (0.5-50 Hz) when pain-states are compared to nonpain states. The magnitude of reduction also appears to correspond to subjective pain report. Analysis for rank order may be inversely related to subjective painfulness, indicating that pain and alpha-desynchronization are closely associated. This study demonstrates that the brain activity of clinical pain patients can be measured. The feasibility of developing a pathophysiological objective pain measuring system is discussed.

Acute Disease↗
PubMed1985

Peak latency differences in evoked potentials elicited by painful dental and cutaneous stimulation.

Long-latency evoked potentials (EPs) (50-400 msec) have been obtained from humans during both noxious stimulation of tooth and cutaneous sites in studies of pain and analgesic states. This study investigated whether EPs elicited by tooth and lip stimulation differed in peak latency and whether EPs obtained during painful cutaneous stimulation showed increasing peak latency values with increased conduction distance. Twelve volunteers received painful electrical stimulation at four sites: tooth, lip, thumb, and toe in counterbalanced orders. Evoked potentials recorded at vertex were summation averaged over 128 trials. Multivariate stepwise discriminate analysis was used to determine whether any of the peak latencies of the event-related potentials differed across stimulation sites. No significant latency differences were observed across lip, thumb or toe at any of the major peaks. Since peaks of these EPs did not vary in latency with conduction distance, they appear to reflect processing at higher levels rather than sensory transmission. The negative 140 msec peak of the dental waveform occurred significantly later than the same peak at cutaneous sites.

Adult↗
PubMed1987

Influence of naloxone on electro-acupuncture analgesia using an experimental dental pain test. Review of possible mechanisms of action.

The purpose of this study was to examine in man the analgesic effect of non-segmental electroacupuncture (EA) limited to a single point (Hoku hand point) and the influence of naloxone using an original modified electrical dental pain test. Results in the literature are still contradictory as to the degree and specificity of acupuncture analgesia and its opioid nature. Acupuncture techniques as well as experimental pain models are factors accounting for the discrepancies in the results. For this reason, we designed an experimental pain test characterized by a high degree of specificity, validity and reliability. We chose optimal conditions for eliciting specific acupuncture effect, i.e. non-segmental, low frequency and painful intensity range. A cross-over repeated measure experimental design was used. Five normal trained subjects participated in 65 sessions under four conditions (control, EA, EA+naloxone, EA+placebo). Changes in experimental dental pain thresholds served as indices of analgesia. The results indicated a 27% pain threshold increase after 30 minutes of EA stimulation (p less than .0001), with no differential effect between pain detection (mild pain sensation) and pain discomfort (strong pain sensation). This increase was partially blocked by the double blind injection of 0.8 mg naloxone IM (p less than .005). The experiment was designed in such a way as to prevent the occurrence of a stress analgesic effect. The endogenous opioid system was shown to be partially involved in acupuncture analgesia. Other mechanisms of action are discussed in view of the literature findings.

Acupuncture Therapy↗
PubMed1978

Tooth-ache.

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Humans↗
PubMed1998

Descending necrotizing mediastinitis caused by odontogenic infections.

Intrathoracic dissemination of an odontogenic infection is very infrequent. The resulting clinical manifestation, known as descending necrotizing mediastinitis, causes high mortality. Due to the absence of early clinical or radiological signs, diagnosis is usually made only when the process is completely established. Treatment is a combination of intravenous antibiotics and mediastinal drainage, via either a cervical or a transthoracic approach. We report the clinical and microbiological characteristics of 4 patients with descending necrotizing mediastinitis, and their clinical course over a period of 10 years.

Adolescent↗
PubMed1999

Barodontalgia: a review, and the influence of simulated diving on microleakage and on the retention of full cast crowns.

This paper reviews the causes of barodontalgia and reports on a study that indicates a possible cause of barodontalgia in the diver. In the study, extracted teeth had full cast crowns cemented with either a zinc phosphate, a glass ionomer, or a resin cement, and simulated diving to 30 m (3.0 atmospheres) was performed. During simulated diving, the teeth were pressure cycled 15 times to 3 atmospheres and microleakage was monitored. The force required to dislodge the crown was then tested; a significant difference was found between the zinc phosphate and the glass ionomer cement groups (p < 0.01). No difference was found between the resin cement groups. Microleakage was also detected in the zinc phosphate and glass ionomer cement groups and was found to occur sooner, and to a greater extent with zinc phosphate. No microleakage was detected in the resin cement experimental group. This study showed that the retention of full cast crowns to extracted teeth is reduced after pressure cycling and that microleakage does occur if the crowns are cemented with either zinc phosphate cement or glass ionomer cement.

Barotrauma↗
PubMed1999

Clinical trial of three 10% carbamide peroxide bleaching products.

BACKGROUND: A profusion of commercial bleaching systems exists on the market today, but there are few clinical comparisons of these systems. METHODS: In this study, three different commercial 10% carbamide peroxide bleaching systems were used by 24 patients in an overnight protocol for two weeks. Each patient used two of the bleaching products simultaneously in a side-by-side comparison. RESULTS: The mean onset of tooth whitening was 2.4 +/- 1.7 days. Tooth sensitivity was the most frequent side effect, as 64% of the patients reported tooth sensitivity occurring after 4.8 +/- 4.1 days and lasting for 5.0 +/- 3.8 days. Although intrapatient differences were recorded for the three commercial 10% carbamide peroxide bleaching systems by the patients, there were no statistical differences in the time of onset of subjective tooth whitening and the onset, frequency and duration of tooth sensitivity among the three commercial bleaching systems when compared pairwise or independently (p < 0.05). CONCLUSION: Selection of which bleaching product to use should be based on the concentration of the active ingredient, the viscosity of the product and other marketing features. Further research is needed to investigate the causes of tooth sensitivity and methods to reduce its severity and frequency.

Adolescent↗
PubMed1976

[Change in the nociceptive reactions caused by dental pulp stimulation during excitation of the midbrain].

It was demonstrated in chronic experiments on cats that stimulation of certain midbrain regions decreased or fully depressed the pain reaction evoked by dental pulp stimulation. The antinociceptive effect depending on the parameters of the brain stimulation was shown in differential change of the separate motor and vegetative and emotional - behaviour components, forming a general pain reaction. A poststimulation analgesia was revealed and the dynamic of restoration of different pain manifestations after the cessation of brain stimulation was traced. Possible mechanism of the realization of the antinociceptive effect are discussed.

Analgesia↗
PubMedDate not supplied

Camouflaged pain.

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Female↗
PubMedDate not supplied

Atypical presentation of odontogenic pain.

Pain referral patterns in the head and neck regions can be complex and frustrating for practitioners to diagnose and treat. This clinical case report involves a patient who did not respond to initial medical treatment for headache pain. The pain was found to be referred from a carious and pulpally involved mandibular molar that interestingly responded normal to pulp vitality testing.

Adult↗
PubMed1997

Temporomandibular disorders. Part I: A comparison of symptom profiles in Australian and Finnish patients.

Variability in the assessment methods of patients seeking treatment for musculoskeletal disorders of the masticatory system confounds comparative assessment of different studies. In this study, presenting symptom profiles were assessed in 40 Australian and 42 Finnish patients with temporomandibular disorders. The symptom parameters of these patients were compared with those of 40 Australians reporting acute dental pain and were assessed with reference to response to conservative management. A self-administered anamnestic questionnaire was used in a standard, systematic, and comparative way to assess demographic data, general health status, and symptom parameters according to type, frequency, severity, duration, location, impact on the patients' lives, urgency for need of treatment, and possible initiating factors. It was found that the two nationalities studied had similar presentations of cardinal symptom profiles. Statistically significant differences in major presenting symptoms were found between patients with temporomandibular disorders and those with acute dental pain, but not between patients who responded rapidly as opposed to slowly to conservative therapy. It was concluded that the presenting symptom profiles were similar for the two nationalities and were not related to treatment outcome.

Activities of Daily Living↗
PubMed1997

The scope of TMD/orofacial pain (head and neck pain management) in contemporary dental practice. Dental Practice Act Committee of the American Academy of Orofacial Pain.

The Dental Practice Act Committee of the American Academy of Orofacial Pain was convened in 1995 for the purpose of studying the scope of temporomandibular disorders (TMD)/orofacial pain and dental practice acts. The committee concluded that the scope of clinical practice of TMD/orofacial pain is expanding beyond the teeth and oral cavity to include the diagnosis and treatment of disorders affecting the entire head and neck. The expansion of clinical practice is consistent with historical precedent in dentistry and within the scope of current dental practice acts. The present report represents the position of the American Academy of Orofacial Pain.

Facial Pain↗