The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation.

Haumea-one of the four known trans-Neptunian dwarf planets-is a very elongated and rapidly rotating body. In contrast to other dwarf planets, its size, shape, albedo and density are not well constrained. The Centaur Chariklo was the first body other than a giant planet known to have a ring system, and the Centaur Chiron was later found to possess something similar to Chariklo's rings.

[Diagnostic evaluation of the soft tissue profile].

The Authors report a cephalometric analysis of soft tissues profile to help the orthodontist to do a correct treatment plane referred to the three thirds of the face and not limited to the lower one only. This analysis is related to adult patients, and because the well known considerations about development of the soft tissues, it should be a predictable analysis of soft tissues profile at the end of growth.

[Extrusive therapy and periodontal alignment. Considerations and indications. 2].

The Authors report some clinical cases treated with orthodontic forced eruption, periodontal surgery and prosthetic rehabilitation. The theoretic first part of this work was published on Dental Cadmos no. 9/87.

[Oral respiration. Diagnosis and physiopathology].

The oral breathing can change the functional connections during the development of the facial bones of the children. All this causes an abnormal growth of the facial bones and of the dental structures. This work developed a new discipline to remove this problem.

[Magnets and orthodontics. Biological-clinical study. 2].

The authors after preliminary remarks on new magnetic alloys, stress some biomechanic aspects related to distalization of upper molars. Radiologic examination of teeth during distalization shows a good rate of crown/tooth ratio movement. Where magnets were worn in combination with extraoral traction, they seemed to be more effective on the "test" sides rather than on the "control" sides where only extraoral forces acted.