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Biomedical subjects

M Lazzati

Publications and source records attributed to M Lazzati.

48 records · Page 3Linked to original sources

[Lingual appliances. 3].

We have introduced the set-up methodology and the ideal arc setting in our brackets laying studies in order to eliminate the complications connected with the shape of the tongue surface. The teeth have been put in the final position by means of the set-up. So you can always, during the treatment, establish the right connection between the teeth and the composite placed between the bracket base and the tongue surface of the teeth, and choice the right high to avoid teeth brackets and bracket-bracket premature touch.

Equipment Design↗

[Autotransplantation of tooth germs].

During the routine orthodontic examination of a 8-year-4-month old female, it was found that the upper right canine and premolars were missing. The anamnesis revealed that their buds had been surgically removed after a trauma when she was 6 years old. The lower incisors were slightly crowded. Since the age of the patient would not permit a fixed prosthetic restoration in the next few years, it was decided to attempt an autogeneic transplant of the lower first premolars to replace the upper right canine and premolars too.

Bicuspid↗

[Lingual appliances: indirect application of lingual brackets. 2].

The bracket must be placed on the tooth in order to reach its tridimensional control, in accordance with all the other teeth. So you must consider these parameters: height, torque, rotation, inclination, tooth slot-vestibular surface distance. Besides brackets direct and indirect application, we describe in this work other alternative ways: the Diamond pliers, the parallelometer Ormco, the jig, and the CreeKmore slot machine.

Dental Bonding↗

[Results of radiotherapy of carcinomas of the retromolar trigone observed at the Varese Regional Hospital].

Retromolar Trigone Carcinomas (RTC) are generally diagnosed at an advanced stage in spite of their accessible location. From December 1979 to January 1987 we examined 23 patients with RTC at the Varese Regional Hospital--three women and 20 men, with an average age of 62.9 years. 21/23 patients were heavy cigarette smokers and consumed more than 1 l of alcohol per day. The patients were classified as 1 T1, 9 T2, 9 T3 and 4 T4 on the basis of TNM classification of malignant tumors. At the beginning of the treatment 12 patients had latero-cervical metastatic nodes. Fifteen patients underwent radiotherapy with 60Co with doses ranging from 60 to 70 Gy. The patients without evident metastatic cervical nodes were also irradiated with doses of at least 45 Gy as a precautionary measure. The percentage of cumulative survival of these patients amounts to 41.1% after 3 years, while for relapse-free patients pcs amounts to 40.7% after 3 years. In view of our results, we do not consider radiotherapy alone an effective treatment as a local cure for RTC. We intend to set up a new therapeutic protocol which incorporates surgery with radiotherapy and includes chemotherapy as necessary on the basis of T volume and of the presence of loco-regional metastatic nodes.

Alcoholism↗