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Biomedical subjects

M Bonanini

Publications and source records attributed to M Bonanini.

17 recordsLinked to original sources
PubMed1991

[Functional velopalatal insufficiency. Therapeutic possibilities].

The function of the soft palate is complex; it takes part in speech, swallowing, and masticatory mechanisms. Its pathology ranges from morphological deficits to functional ones; these are commonly due to a central nervous system damage. The clinical analysis is based upon examination and instrumental prove, and leads to an optimum choice between surgical and prosthetic solutions. The latter is the best one in terms of quick execution, low costs and future possibilities of improvement.

Adult↗
PubMed1990

Motor-evoked potentials in masseter muscle by electrical and magnetic stimulation in intact alert man.

The electromyographic responses of the masseter after different types of transcranial stimulation were recorded with surface and needle electrodes. Magnetic stimulation at 4 cm lateral to the vertex on the biauricular line elicited MEPs in the contralateral masseter (latency 6.9 ms) due to activation of motor cortex or adjacent elements along the cortico-nuclear pathway. The ipsilateral responses to the same stimuli and to more lateral ones had shorter latencies and were ascribed to direct stimulation of the trigeminal nerve, probably its intracisternal portion. This was also the probable origin of the ipsilateral MEPs after both anodic and cathodic bipolar electrical stimulation at 7 and 11 cm lateral to the vertex on the biauricular line.

Adult↗
PubMed1990

[Individual cast posts for single anterior implants].

The Authors utilized in order to replace anterior missing teeth osseointegrated implants provided with individual angled posts. These types of abutment are used to allow a good parallel situation between implants with different angulation and also between implants and proximal teeth. The head of this abutment is thread to receive the screw that allows the crown to be fastened.

Alveolar Bone Loss↗
PubMed1990

[Headaches and craniofacial pains with dental involvement in the classification of the International Headache Society (1988)].

Facial pain often presents complex diagnosis, requiring other specialists' consultation. The use of different terminology and protocols can affect the information exchange negatively. These problems in the field of headache, cranial neuralgias and facial pain lead the International Headache Society to introduce a new classification in 1988. The chief difference with the previous ones is the presence of strictly codified diagnostic principles. Its target is research, but it can help the general practice as well. We discuss the most interesting points to the stomatologist.

Facial Pain↗
PubMed1990

[Masseteric responses following electrical stimulation of the scalp].

Electromyographic responses of the masseter muscles following electric transcranial stimulations by a conventional constant current stimulator were recorded with surface and needle electrodes. Ipsilateral motor evoked responses following both anodic and cathodic bipolar electrical stimulations performed at 7 and 11 cm laterally to the vertex on the biauricular line were recorded, with latencies ranging from 2 to 3.6 ms. Contralateral responses were not elicited. The ipsilateral responses to stimuli were ascribed to direct stimulation of the trigeminal nerve, probably its intracisternal portion.

Adult↗
PubMed1990

[Magnetic stimulation of the scalp: the responses of the masseter muscles. I].

Magnetic stimulation of nervous elements is a new neurophysiological technique. It easily succeeds in stimulating the brain motor cortex. We applied this technique to the trigeminal motor system, recording responses in masseter muscles. The magnetic stimulations at 4 cm laterally to the vertex on the biauricular line elicited responses in the contralateral masseter due to activation of motor cortex or adjacent elements along the cortico-nuclear pathway. The ipsilateral responses to the same stimuli and to more lateral ones presented shorter latencies and they were ascribed to direct stimulation of the trigeminal nerve, probably its intracisternal portion. The latency values were 6.9 +/- 0.71 ms and 3.6 +/- 0.3 ms respectively.

Adult↗
PubMed1990

[Magnetic stimulation of the scalp: the responses of the masseter muscles. II].

Magnetic stimulation of nervous elements is a new technique of investigation in intact alert man. Electromyographic responses of the masseter muscles were recorded in normal volunteers and in two patients with hemispheric or capsular lesions, both by surface and needle electrodes. In the patients "cortical" responses were absent when stimulating the affected hemisphere and present when stimulating the unaffected one. These findings suggest that the direct facilitating cortico-nuclear projections for the masseter muscle are mainly crossed. Nevertheless the presence of clear ipsilateral responses after stimulation of the unaffected hemisphere demonstrates the existence of uncrossed projections; in fact only the ipsilateral motor cortex can be the site of origin of the responses in these patients.

Adult↗
PubMed1989

[Clinico-diagnostic evaluation of craniomandibular disorders].

Diagnostic setting of patients with craniomandibular disorders, imposes a careful valuation of the single components of the stomatognathic system (articular, occlusal, neuromuscular) to identify the etiologic factors which have led to the pathology. The Authors illustrate a clinic standardized procedure evaluating the different aspects and punctualizing the importance of the anamnestic investigation to define the psycho-emotional component of the patient. Only a careful clinic valuation permits a therapeutic programme to obtain a stable result without any relapse.

Auscultation↗
PubMed1989

[Histopathological evaluations in dental caries: preliminary data].

The intent of this research is to describe the histopathological evolution of the carious lesion on the teeth with great crown caries. The histo-pathological study of the dental structure affected by carious lesion can favour a better uptake of some pathological and semeiotic events to whom often the clinician don't get to give an exact explanation.

Adult↗
PubMed1989

[Electromyographic evaluation of silent periods in the elevator muscles of the mandible in dysfunctional pathology of the temporo-mandibular joint].

After a brief review of the features and physiology of the silent period, its modifications in painful temporomandibular dysfunction are assessed with particular reference to their reliability in practical diagnosis. Six patients with the classic signs and symptoms as well as 7 healthy volunteers acting as controls were examined. In view of the results obtained as well as the discrepancies reported in the literature and the numerous variations in the methods used in stimulating, recording and measuring the silent period, it is concluded that this study can play no more than a supporting role in the diagnosis of the syndrome despite its value in experimental research.

Adult↗
PubMedDate not supplied

[Handicapped situations in dentistry].

Moving from the general definition of "handicap" "the Authors suggest a classification system based upon the most important altered function of a patient. A handicap situation happens when a patient needs special care in a dental office, both for particular oral changes due to his primary pathology or related therapy and for increased operatory risks.

Dental Care for Persons with Disabilities↗