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Biomedical subjects

P Cascone

Publications and source records attributed to P Cascone.

At least 19 recordsLinked to original sources
PubMed1992

[Technical principles of solid tridimensional modeling with computerized tomography for the study of maxillofacial diseases].

3DCT allows the solid modeling of body structures from contiguous slices. The 3D images are free to rotate on the x, y, and z axes. It is possible to evidentiate structures with various densities by means of threshold operators, which allow a 3D model of both soft tissues and bones to be obtained. Shading operations allow image quality to be improved by varying the elementary units to surface units ratio. Implemented 3D rendering reduces the spatial edges by means of anti-aliasing functions. The 3D images allow the study of the complexity of maxillofacial bony structures, and they are especially useful in both surgical planning and in postoperative follow-up. We studied 58 patients with maxillofacial diseases (34 traumatic, 14 malformations, 4 dysplastic, and 6 neoplastic). In most cases (96.5%), we obtained high-quality images, which allowed both the site and the extension of the lesions to be evaluated, together with their relationships to adjacent structures. In 65% of traumatic cases, the 4 basic views thoroughly demonstrated lesion spread, while in the extant 35% of cases cutting operations and rotatory translations were necessary. In all malformation cases a clear visualization of somatic asymmetries was obtained. In both dysplastic and neoplastic cases, the best lesion evidence was obtained in superficial lesions with cortical bone involvement. This technique was always easy and quick to perform, with no need for supplemental dose exposure to the patient.

Bone Diseases↗
PubMed1992

[Neuromuscular assessment and postural examination in patients with TMJ condylo-meniscal incoordination].

The neuromuscular system plays a primary role in the development of a myofascial syndrome of the temporomandibular joint. Patients suffering from this disease very often show changes in muscular functions. In biomechanical clinical pictures of temporomandibular myofascial syndrome the motor apparatus is involved only in the second stage. In order to determine the efficiency of the motor apparatus and to schedule a physiotherapeutic treatment program to improve condylar-meniscus coordination of the joint, an analysis of muscular function associated with postural examination has been performed, and this with a view to evidence possible skeletal changes, with particular regard to the spine. The study has been carried out in a group of healthy individuals in front of an other group of patients affected by the pathology mentioned.

Adolescent↗
PubMed1991

[A statistical evaluation of the surgical therapy of TMJ condyle-disk incoordination].

Biomechanical pathology of the TMJ occurs most frequently in 4 clinical variants: anterior dislocation of the jaw, reciprocal click, closed lock, osteoarthrotic degeneration. The aim of this study was to evaluate the efficacy of TMJ surgery, using statistical comparative analysis, in resolving condylo-meniscal incoordination. Eighty-one patients were included in the study who had been treated surgically for various symptoms of condylo-discal incoordination from 1982 to 1989, assessing a series of objective and subjective parameters and making a statistical comparison of results.

Age Factors↗
PubMed1991

[Magnetic resonance in condylo-meniscal incoordination pathology of the temporomandibular joint. Indications, diagnostic accuracy and optimization of study techniques].

Up to 28% of the population is affected with pathologic conditions involving the temporo-mandibular joint (TMJ), most of them related to uncoordinated disk motion. To date, these pathologies have been evaluated by means of different diagnostic tools, the latest of which is MR imaging. The authors examined with low-field (0.2 T) MR imaging 15 normal volunteers and 20 patients suffering from temporo-mandibular joint disk dysfunction. The study was aimed at comparing the results obtained with low-field MR imaging with literature data on the subject. A standard technique employing low-field MR imaging was also assessed on normal subjects for the management of the patients with TMJ pathologies. The pathological TMJs were then evaluated, each of them examined with arthroscopy and/or surgery. MR imaging was capable of identifying the meniscus in all cases, together with its morphology, signal, location, and movements during opening and closure of the mouth. Disk dislocation were always correctly identified. The point of re-capture in the cases with spontaneous reduction was easily ascertained. The simultaneous imaging of both the right and the left TMJs allowed the joints to be compared at the same degree of mouth opening, so that motion asymmetries were easily detected. High agreement was observed between MR, arthroscopic and surgical findings. Our experience points to MR imaging as the examination of choice in the evaluation of TMJ diseases. The best results are obtained when both joints are simultaneously imaged, on the sagittal and coronal planes, during opening and closure of the mouth, and possibly in a cine-animation display format.

Arthroscopy↗
PubMed1990

[Functional dynamics of the TMJ. Importance of the lateral capsular ligament].

On the base of some papers previously published on the anatomy and physiology of the Tmj the Authors have studied the intracapsular dynamics of the cranio mandibular articulation. The intracapsular movements are guided by some biomechanical restrictions that have been cautiously studied and analized. The biological advantages of the presence of the meniscus between the two articular surfaces is clearly stated. The role of the lateral capsular ligament in stabilizing the disk over the condyle head is clearly demonstrated on the base of previous studies both on the microscopic and macroscopic anatomy of the ligament and the capsule. According to the Authors the disk is stabilized over the condyle head by the lateral capsular ligament, the temporomandibular ligament and by the histological structure of the meniscus that permits its compression and distorsion during the mandibular movements. The disk distorsion increases the anatomical correspondence between the intracapsular structures.

Humans↗
PubMed1990

A new condyle.

Explore the source record for details and available documents.

Ankylosis↗
PubMed1989

Condylar hyperplasia: cephalometric study, treatment planning, and surgical correction (our experience).

We have studied and treated 12 selected cases of condylar hyperplasia. All of our cases showed no clinical or instrumental sign of still active hyperplastic growth of the mandibular condyle. The cephalometric studies demonstrated in all cases a pathologic vertical growth of the maxilla interesting the posterior segments on the same side of the hyperplastic condyle. We decided not to perform a condylectomy because we did not expect the condyle to grow any further. The treatment consisted of Le Fort I osteotomies and sagittal split osteotomies sometimes in combination with genioplasty and mandibular remodeling. The mandibular physiologic movements were preserved in all cases.

Adolescent↗
PubMed1987

Anterior displacement of the mandible for better exposure of the distal segment of the extracranial carotid artery.

Anterior displacement of the mandible (ADM) was performed in 34 patients undergoing surgery for malformations or atheromatous lesions of the distal segment of the extracranial internal carotid artery (ICA). This procedure greatly facilitates surgical access to the upper cervical region and has several advantages over mandibulotomy-mandibulectomy, namely: A shorter operating time, sparing of the inferior alveolar nerve and of the mandibular branch of cranial nerve VII, with no need for post-operative immobilization of the mandible. ADM permits the correction of ICA lesions extending as far as the first cervical vertebra. For lesions extending into the carotid canal ADM needs to be supplemented by various other procedures via the base of the skull.

Carotid Artery, External↗