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Biomedical subjects

M Chiapasco

Publications and source records attributed to M Chiapasco.

27 records · Page 2Linked to original sources
PubMed1988

The pectoralis major myocutaneous flap. Experience in 100 consecutive cases.

The authors have made a study of 100 consecutive cases in whom a pectoralis major myocutaneous flap was employed for reconstruction after surgical ablation of advanced malignant tumours in the head and neck. The results obtained show that primary healing took place in 74% of cases with a relatively low incidence of complications. The authors therefore confirm the reliability of the pectoralis major myocutaneous flap, which, owing to its rich blood supply, offers the possibility of providing large cutaneous islands, and its proximity to the site of ablation provides a simple and reliable method which may be used in the majority of cases of immediate or delayed reconstruction of the cervico-maxillo-facial area.

Adult↗
PubMed1988

[Osteomas of the paranasal sinuses: review of the literature and personal cases].

The sinusal osteomas: a review of literature and personal cases. The osteoma is a osteogenetic benign tumour formed by a fully developed bone, characterized by a slow growth, which, as far as the maxillo-facial region is concerned, shows to be frequently located in the paranasal sinuses. The osteoma originates from one of the sinus walls and spreads into the sinus cavity itself producing symptoms related to a lesion space occupying. In the present report, taking into consideration 4 personal cases, some literature datas are examined concerning the epidemiology, clinical behaviour and especially the therapeutic implications to be adopted by the surgeon in the presence of sinusal osteoma.

Adolescent↗
PubMed1987

Facial nerve and parotid surgery.

A series of 100 surgical procedures on the parotid gland affected by tumours is reported, with a detailed analysis of facial nerve function after parotid surgery. A low percentage of temporary lesions (28%) affecting only one branch of the facial nerve, all of which regressed in a short time, and only one case of a permanent lesion affecting the whole nerve, anatomically intact, however, was observed. The authors confirm the safety of parotidectomy, if correctly performed.

Facial Nerve↗
PubMedDate not supplied

Implant-retained mandibular overdentures with immediate loading: a prospective study of ITI implants.

A prospective study was conducted in which 21 patients received a mandibular implant-supported overdenture. Eighty-four ITI screw-type implants were placed in the interforaminal area of the mental symphysis (4 implants per patient). Immediately after implant placement, a U-shaped gold or titanium bar was fabricated and implants were loaded with an implant-retained overdenture. Of 21 patients treated, 19 were followed for a minimum of 25 months to a maximum of 60 months, with a mean follow-up of 37 months. Two patients dropped out during the follow-up. The overall failure rate of implants (according to Albrektsson criteria) was 4% (3/76 implants), but all implants, bars, and prostheses remained in function. Results from this study demonstrated that the success rate for immediately loaded mandibular implants is similar to that obtained in cases of delayed loading, after osseointegration has taken place. This method shortens dental rehabilitation time with relevant satisfaction for patients.

Aged↗
PubMedDate not supplied

Vertical distraction osteogenesis of edentulous ridges for improvement of oral implant positioning: a clinical report of preliminary results.

This study examined the opportunities offered by intraoral distraction osteogenesis to vertically elongate insufficient alveolar ridges and thereby improve local anatomy for ideal implant placement. Eight patients presenting with vertically deficient edentulous ridges were treated by means of the distraction osteogenesis principle with an intraoral alveolar distractor. Two to 3 months after consolidation of the distracted segments, 26 implants were placed in the distracted areas. Four to 6 months later, abutments were connected and prosthetic loading of the implants was started. The mean follow-up after initial prosthetic loading was 14 months. In all patients, the desired bone gain was reached at the end of distraction (mean vertical bone gain of 8.5 mm). Probing depth, Bleeding Index, and Plaque Index around implants were evaluated, and Periotest values were also calculated. The cumulative success rate of implants was 100%. Radiographic examinations 12 months after functional loading of implants showed a significant increase in the density of the newly generated bone in the distracted areas. This technique seems to be reliable, and the regenerated bone has withstood the functional demands of implant loading. Success rates of implants, periodontal indices of peri-implant soft tissues, and Periotest values were consistent with those reported in the literature regarding implants placed in native bone.

Adult↗
PubMedDate not supplied

Implant-retained mandibular overdentures with Brånemark System MKII implants: a prospective comparative study between delayed and immediate loading.

This study was designed to compare the results of immediate and delayed loading of implants with implant-retained mandibular overdentures. Ten patients (test group) received 40 Brånemark System MKII implants (4 per patient) placed in the interforaminal area of the mandible. Standard abutments were immediately screwed to the implants, rigidly connected with a bar, and immediately loaded with an overdenture. Ten patients (control group) received the same type and number of implants in the same area, but the implants were left to heal submerged. Four to 8 months later, standard abutments were screwed to the implants and the same prosthetic procedure was applied. Each implant was evaluated at the time of prosthetic loading and at 6, 12, and 24 months after the initial prosthetic load with the following parameters: modified Plaque Index (MPI), modified Bleeding Index (MBI), probing depth (PD), and Periotest. Peri-implant bone resorption was evaluated on panoramic radiographs taken 12 and 24 months after initial prosthetic loading. No significant differences were found between the 2 groups regarding MPI, MBI, Periotest, peri-implant bone resorption, and PD at 6 and 24 months (P > .05). The only difference was found regarding PD values on the mesial and lingual sites at 12 months (P < .05). The cumulative success rate of implants was 97.5% in both groups. Results from this study showed that immediate loading of endosseous implants rigidly connected with a U-shaped bar does not seem to have any detrimental effect on osseointegration. Conversely, this method significantly shortens the duration of treatment with relevant satisfaction for the patients.

Adult↗
PubMedDate not supplied

Tridimensional reconstruction of knife-edge edentulous maxillae by sinus elevation, onlay grafts, and sagittal osteotomy of the anterior maxilla: preliminary surgical and prosthetic results.

The possibility of placing endosseous implants in the edentulous maxilla is frequently reduced by inadequate bone volume of the residual ridge. In totally edentulous maxillae with knife-edge conformation, insufficient thickness is frequently associated with insufficient height of the residual ridge in the posterior maxilla because of pneumatization of the maxillary sinuses. This surgical method combines grafting of the maxillary sinuses, onlay grafts on the buccal side of maxillary posterior segments, and sagittal osteotomy of the anterior maxilla with interpositional bone grafts. Five to six months after maxillary reconstruction, Brånemark implants were placed and, after osseointegration occurred, implant-supported dental prostheses were fabricated. Three patients have been treated with this method and 22 implants have been placed. The mean follow-up after final prosthetic rehabilitation has been 16 months; survival rate has been 100%. Despite the small number of patients and the short follow-up, preliminary results have shown very promising results.

Adult↗