Comparison of two orthodontical techniques for the correction of lingual deviation of upper incisors in the dog.

Two different orthodontic treatments were applied to dogs exhibiting lingual deviation of maxillary incisors. Two dogs were treated by means of an orthodontic device consisting of an acrylic plate fitted with a counteracting spring. The results were disappointing. These animals and two other dogs were treated with Schwarz's orthodontic device. After 3 to 4 months of treatment, lingual malposition of incisors was successfully corrected. Orthodontic therapy induced problems were unimportant and with collaborating owners could be easily overcome.

[Comparative study of two different types of dental implants in dogs. Experimental study]. / Estudio comparativo de dos tipos diferentes de implantes dentarios en Perros. Estudio experimental.

Mandibular incisors were taken out in 13 adult dogs. Twenty days after the extraction, two implants either of titanium or hydroxylapatite were placed in a second operation. The clinical, pathological and radiological results suggest that metallic implants produce fibrous tissue around the implant. In most cases, fibrous tissue does not ossify and this facilitates the formation of a malunion and the mobilization of the implant. However, the results with hydroxylapatite implants appear to be satisfactory due to the formation of an osseous tissue mandibular bone. This tissue prevents the mobilization of the implant allowing support to a dental prostheses.

[Endodontics in horses. An experimental study]. / Endodoncia en equidos. Estudio experimental.

A total of 44 experimental endodontic treatments were performed in incisors of eight horses of different ages. Four different endodontic pastes were used: Cloropercha, AH26 De Trey, Eugenol-Endometasone, and Universal N2. Gutta-percha points were also included in the last two treatments. Access to the pulp cavity of incisors was gained through their vestibular and occlusal faces. Holes drilled in vestibular faces were sealed with composite and those drilled in occlusal faces were sealed with Amalgama. Animals were observed during eighteen months at least after endodontics. Radiographic controls were done just after surgery and before slaughtering. Treated incisors and alveoli were studied histopathologically. During the experiment all animals were in good condition. They ate apparently without trouble, and neither clinical nor radiological signs were present.