A retrospective study was performed in 100 dogs with 121 mandibular and 21 maxillary fractures. Dog fight (43.0%) and automobile (12.0%) trauma were the most common etiologies for fracture. The cause of fracture was unknown in 23.0% of the cases, while pathologic fractures occurred in 13.0% of cases. Young dogs (< 1-year-old) and dogs > 8-years of age were most affected. Mandibular fractures occurred in 90 dogs (90.0%), with two dogs (2.2%) having concurrent maxillary fractures. Maxillary fractures only were diagnosed in 10 dogs (10.0%). The molar region (47.1%) was the most commonly affected location for mandibular fracture, followed by fractures of the symphysis and parasymphysis (30.6%), premolar region (17.4%), angular process (4.1%) and vertical ramus (0.8%). In fractures of the mandibular region, the mandibular first molar tooth was often (85.9%) involved while the canine teeth were involved in 67.5% of symphyseal and parasymphyseal fractures. The most common fracture of the maxilla was the maxillary bone (52.4%), followed by the incisive (33.3%), palatine (9.5%), and nasal (4.8%) bones.

No abstract

The roots of 130 extracted teeth were examined for non-apical ramifications from the main canal. Following decalcification and dehydration, the root canals were identified with an Indian ink gel. Secondary canals were found in 4 of the 130 teeth (2.4%), and stumps that may represent incomplete lateral canals were identified in two teeth. We conclude that non-apical root canal ramifications are much less common in dogs compared to humans.

RESUMOO trabalho foi desenvolvido em duas fases. A primeira constou de aplicação de resina acrílica autopolimerizável sobre dentes de cães experimentais, sem condicionamento ácido do esmalte dental; a gengiva foi analisada histologicamente nos períodos de um, três, sete, 14, 21

Canine tooth fracture is common in dogs. Application of an esthetic and durable restoration may be challenging in veterinary dental practice. This study used traditional human dental laboratory methods to evaluate fracture strength of intact dog canine teeth and fractured teeth that had been restored by reattachment of the tooth fragment. The results showed that the teeth restored by reattachment of the tooth fragment supported a test load equal to 45.4 % of the load necessary to fracture intact canine teeth.