Endodontic-related inferior alveolar nerve and mental foramen paresthesia

Paresthesia is a condition that involves perverted sensations of pain, touch, or temperature. It has a variety of possible causes. This article presents a literature review and case reports of endodontically related inferior alveolar nerve and mental foramen paresthesia. Nondrug prevention methods and the dental uses of dexamethasone are also discussed.     

Position of the mental foramen in a North American, white population

In Italy departments of emergency medicine and emergency medical service systems (EMS) were first set up at the end of the 1970s. Since that time many dramatic and significant changes have taken place in the care of the critically ill patient. In Italy the interest in emergency problems and the need for emergency intervention have increased considerably. Nevertheless several problems still have to be solved in order to obtain a standardized organization of the emergency system in Italy and uniform training of emergency care providers.     

Position of the mental foramen in adult black Zimbabwean mandibles: a clinical anatomical study

OBJECTIVE: To provide some anatomical information on the shape, size, and position of the mental foramen among Black Zimbabweans that could be used as reference material by dental and other health practitioners during clinical practice in Zimbabwe. DESIGN: Cross sectional anatomical study. SETTING: Department of Anatomy, Faculty of Medicine, University of Zimbabwe, Mount Pleasant, Harare, Zimbabwe. SUBJECTS: 32 mandibles derived from adult Black Zimbabweans. MAIN OUTCOME MEASURES: The shape of the mental foramen, its relation to the lower teeth and its position in relation to the mandibular symphysis, the posterior border of the ramus of the mandible, the lower border of the mandible, and the alveolar margin. RESULTS: The shape of the mental foramen was round in 14 out of 32 mandibles (43.8%) and was oval in the remaining 18 (56.3%). The percentage of occurrence of the mental foramen was highest below the lower second premolar tooth on the right side (position 4) and posterior to it on the left side (position 5). In the vertical plane, the mental foramen lay slightly below the midpoint of the distance between the lower border of the mandible and the alveolar margin (44.1% and 45.5% for the right and left sides respectively). In the horizontal plane, it lay approximately one quarter (27.3% for the right and 27.4% for the left sides) of the distance from the mandibular symphysis to the posterior border of the ramus of the mandible. CONCLUSION: The percentage distribution of the mental foremen in relation to the lower teeth in the adult Black Zimbabwean mandible was at variance with that of other population groups. However, the quantitative position of the mental foremen was bilaterally symmetrical in the adult Black Zimbabwean mandible. The latter observation is of clinical significance to dental and other health practitioners in Zimbabwe with regards to the achievement of effective mental nerve block anaesthesia and the prevention of damage to the mental nerve during surgical procedures on the lower jaw.     

Clinical anatomy of the interosseous arteries of the forearm

In recent years, several local flaps have been developed, based on the anterior and posterior interosseous arteries and their anastomoses at the wrist (e.g. posterior interosseous flap, pronator quadratus flap etc.). The anatomy of the arterial network supplying the flap is well established in both clinical and anatomical literature. Most authors agree in the constancy of the anastomoses between the interosseous arteries at the wrist and the absence of major anatomical variations excluding the use of the flap. In the present study, which is based on cadaver dissections of 60 preserved specimens, several gross vascular variations of the interosseous arteries have been found. The most frequent types were an additional anastomosis between the posterior interosseous artery and a perforating branch of the anterior interosseous artery in the middle third of the forearm, which was found in 20%. Ring-formations of the palmar and the dorsal branch of the anterior interosseous artery occurred in 5%. The point of perforation of the interosseous membrane by the dorsal branch of the anterior interosseous artery was found to vary in a larger extent, as described previously.     

Vascular anatomy of the human uterus and pregnancy wastage

In uteri removed at hysterectomy the uterine arteries were injected with radioopaque media and the vascular configuration was correlated with reproductive histories. Patients whose uteri had two ascending uterine arteries on each side had significantly more abortions and smaller newborn infants than patients with a single ascending branch of the uterine artery.     

Vascular anatomy of the human cruciate ligaments and surrounding structures

A method is reported for the correction of the depressed nasal tip in the cleft lip deformities. Open exposure of the nasal frame, septal chondral anterior reinsertion, and lipocutaneous composite graft taken from the submastoid or retroauricular region and positioned at the basis of the columella are the main points of the method. The first results, in 22 patients, are discussed and seem promising.     

High-resolution anatomy from in situ human brain

We have generated a spatially accurate, high-resolution three-dimensional (3D) volume of brain anatomy from cryosectioned whole human head. The head of a female cadaver was cryosectioned on a heavy duty cryomacrotome (PMV, Stockholm Sweden) modified for quantitative digital image capture. Serial images (1024(2), 24-bit) were captured directly from the cryoplaned specimen blockface in 500-micron intervals and reconstructed to a 3D data volume. Data were placed into the Talairach coordinate system to create a volume of brain anatomy for atlas reference. We resampled the volume at 500 microns along the sagittal, coronal, and horizontal planes and enhanced the images by digitally editing the background. The spatial resolution of the original digitized images provided sufficient anatomic detail to clearly delineate gray and white matter and neural structures, including major fiber pathways, subthalamic nuclei, and laminae. We developed a compact disk and controlling software program to enable the viewer to select planes of orientation, display, and copy individual to sections at higher resolution. Animation proved useful in the conveyance of system anatomy as structures are shown traversing through the neuroaxis. Postmortem cryosectioning paired with this computerized presentation allowed the complete 3D volume data to be distributed and shared as an educational, clinical, and research resource.     

The variational anatomy of the external aperture of the human vestibular aqueduct

A study was undertaken to demonstrate the variational anatomy of the external aperture of the vestibular aqueduct in 90 human temporal bones obtained from 58 cadavers. Topographic landmarks of the posterior surface of the petrous bone are useful for general orientation and include the external aperture of the vestibular aqueduct, internal auditory meatus, sigmoid sinus, subarcuate fossa, superior petrosal sinus and cochlear canaliculus. We determined the mean distances from the external aperture of vestibular aqueduct to the above structures to be 10.98, 11.21, 9.42, 10.27 and 13.90 mm, respectively. Furthermore, the length of the external aperture of the vestibular aqueduct revealed significant differences between the right and left sides. The distances between the EAVA and certain anatomical structures on the posterior surface of the temporal bone should be taken into consideration during surgery. Knowing the variability of the position of the external aperture of the vestibular aqueduct may help surgeons avoid traumatizing, and thus producing inadvertent lesions to the hearing mechanism.     

Stages in human mental growth.

R. B. McCall's (see record 1988-32308-001) article in this journal criticizing some of H. T. Epstein's (e.g., 1978) studies of brain and mind growth is shown to suffer from 2 main flaws. First, he was not aware of the need for analysis in terms of concurrences among studies rather than standard statistical analyses of individual studies. Second, he did not use increment spans appropriate for the data. He also wrongly claimed that Epstein advocated changes in educational policies and practices without caveats that carefully labeled these as suggestions for working hypotheses to be tested in the schools. Finally, his criticisms of the brain growth stages had already been invalidated in a 1986 article by Epstein which he did not cite. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Clinical risk assessment for mental health nurses

This article proposes a risk management cycle for mental health nurses, it can be used as a guide to assessing and managing the risk of harm associated with people with mental health problems alongside systematic approaches to planning care.     

Sixty-fifth anniversary of the department of human anatomy at the Dagestan State Medical Academy]

Experience is described of that gained with the use in a clinical setting of Ditec and Lasolvan as a monotherapy and combined in the treatment of pediatric patients with bronchial asthma who ranged from 1 to 14 years old. A combined therapy with Ditec and Lasolvan was found out to be highly effective; besides, it was well-tolerated by patients. The efficacy of the combination appeared to be superior to monotherapy with the above drugs.     

Role for animal research in the investigation of human mental retardation

Themes central to sex-role socialization are traced, along with the processes by which dominance and female deference are developed. Gender differences in parent-child interactions, peer-group relations, classroom settings, children's observations of the marital dyad, and messages from television are examined. The link between sex-role socialization and the etiology and maintenance of wife abuse is discussed.     

The anatomy and the MRI anatomy of the interhemispheric cerebral commissures

Correlation of myelin-stained or cryotomic sections of human brain with inversion-recovery MR images can display the cerebral commissures as white-matter tracts (in hypersignal on MRI), crossing the mid-line. MRI shows routinely in three orthogonal planes a) the corpus callosum stretched above the supra-tentorial ventricles, it's four portions (rostrum, genu, body and splenium) and connections with the Deep Grey Nuclei b) the fornix, intralimbic commissure joining anteriorly the mammillary bodies (through it's columns) to the alveus posteriorly and inferiorly (via it's two crura), arcing around the thalamus and lying over the hippocampus and the dentate gyrus as shown on the frontal sections c) the anterior commissure, white-matter tract connecting the two temporal lobes. In axial view, the anterior commissure has the shape of bicycle handlebars, coursing posteriorly, inferiorly and laterally behind the head of the caudate nucleus and passes into the lateral nucleus of the globus pallidus into the inferior and middle temporal gyri. Because the anterior commissure is easily recognisable in all planes, it's appears to be a important landmark for identification of the lateral and medial nuclei of the globus pallidus on axial and sagittal planes d) at least, the posterior commissure, anterior margin of the pineal region, closely related to the superior colliculi, acquire a major importance in the AC-PC line delineation becoming a reference landmark for stereotatical procedures.     

Clinical applications of telehealth in mental health care.

This article introduces the concept of telehealth and examines how telehealth expands both provider and patient access to health care. Current clinical applications are presented including equipment, research, and examples of direct clinical care. The article focuses on store-and-forward and video teleconferencing technologies providing information about the equipment and research pertaining to the clinical use of the equipment. The status of behavioral telehealth programs in the United States is reviewed and two case examples are provided. The first example discusses a direct patient care system and the second a remote clinical supervision system. The article concludes with suggestions for determining the value of adding telehealth to existing clinical practices. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Clinical psychologists' perceptions of persons with mental illness.

Clinical psychologists have an ethical responsibility to monitor the nature and appropriateness of their attitudes toward persons with mental illness. This article presents the results of a survey of randomly selected clinical psychologists who were asked to rate the effectiveness, understandability, safety, worthiness, desirability, and similarity (to the rater) of persons with moderate depression, borderline features, and schizophrenia. The results show that psychologists perceive these individuals differently with respect to these characteristics. The results also suggest that psychologists disidentify or distance themselves from persons with personality and psychotic conditions. Implications for quality improvement and stigma reduction in the field of professional psychology are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The human electroencephalogram during the mental recall of emotionally colored events]

Serum deprivation of immortalized brown adipocyte cell line resulted in growth arrest in G0/G1 phases of the cell cycle and apoptosis, as detected either by DNA laddering or by increase in the percentage of hypodiploid cells. Furthermore, apoptosis is concurrent with a dramatic increase in the expression of the proapoptotic protein Bcl-xS, the expression of Bcl-xL remaining almost undetectable. Insulin/insulin-like growth factor (IGF-I) rescued serum-deprived brown adipocytes from apoptosis, decreasing the number of hypodiploid cells and increasing the number of cells undergoing cell cycle progression throughout S and G2/M phases of the cell cycle. Moreover, insulin down-regulated Bcl-xS expression without inducing the expression of Bcl-xL. Both phosphatidylinositol (PI) 3-kinase and mitogen-activated protein kinase (MAPK) pathways are necessary for insulin/IGF-I full survival effect, since the use of specific inhibitors of PI 3-kinase activity (wortmannin or LY294002, at the dose that inhibits PI 3-kinase activity induced by insulin) or MAPK kinase activity inhibitor (PD098059, at the dose that inhibits insulin-induced phosphorylation of MAPK) totally blocked the antiapoptotic effect induced by insulin/IGF-I, respectively. In conclusion, insulin survival effect on immortalized brown adipocytes is associated with inhibition of the Bcl-xS content without changing Bcl-xL, in a PI 3-kinase- and MAP kinase-dependent manner.