Cementation of Full Coverage Metal Crowns in Dogs

Radiographic Outcome of Vital Teeth Treated with Prosthodontic Crowns in Dogs: 26 Cases (2015-2017)

This retrospective study evaluated the effects of prosthodontic crown placement on tooth vitality. Prosthodontic crown placement may be indicated for vital teeth affected by attrition, abrasion, uncomplicated crown fractures, enamel defects, and enamel hypoplasia. This study evaluated 26 vital teeth in 17 patients at the time of crown placement and after 1-year following crown placement. Dental radiographs were used to determine vitality of the 26 teeth. Twenty-five teeth were found to be vital and 1 tooth was non-vital 1-year after crown placement. These results demonstrated that tooth vitality was maintained after titanium alloy crown placement to treat crown attrition, abrasion, uncomplicated crown fractures, and enamel defects.

Treatment of Worn Tusks Using Metal Crowns in Two Young Captive Walruses (Odobenus Rosmarus)

Two young walruses, recently transferred to the Vancouver Aquarium, presented with severe abrasion to their tusks. The walruses were sedated, and clinical examination and radiographs of the tusks showed that the pulp chambers were not exposed. The tips of the tusks were then prepared to receive metal crowns. Vinyl polysiloxane impressions were obtained and sent to the laboratory for chrome-nickel crown fabrication. A week later, the crowns were cemented onto the tusks and remained in place on follow-up examinations.

Success of Feather Margin Preparation for Full Metal Prosthodontic Crowns in the Canine Teeth in 84 Pet and Working Dogs (2005-2017)

Medical and dental records of Veterinary Dental Specialties and Oral Surgery were searched to identify dogs that received full metal prosthodontic crowns on canine teeth, using a feather or knife edge preparation between 2005 and 2017. A total of 160 teeth in 84 dogs were included in the study. Current follow-up by telephone, electronic mail, or electronic messaging was conducted, in addition to thorough record review for in-person recheck examinations. Treatment was considered successful if the prosthodontic crown was in place and no further or additional injury to the tooth had occurred at the time of reexamination, owner contact, or patient death. Tooth fracture apical to the prosthodontic crown occurred in 2 (1.25%) cases, bond failure between the tooth and the cement or the cement and the crown occurred in a single case (0.625%), and one metal crown required replacement after 3 years due to wear (0.625%), for an overall failure rate of 2.5%. These results suggest that feather preparation of the margin is at least as, if not more, successful as the more commonly accepted and performed chamfer margin, and thus is a successful, practical and durable option for prosthodontic crown treatment in dog canine teeth.