Oral and dental disorders are one of the most prevalent diseases in small animal practice. Despite considerable importance of malocclusions, information on frequency of these diseases in populations of pet dogs, especially in Iran, is scarce. The aim of the present study was to assess the frequency of malocclusion in dogs referred to the veterinary hospital of Shahid Bahonar University of Kerman. A total of 111 dogs including 58 males and 53 females, aged 6 months to 13 years old of different breeds were analyzed. The oral cavity was examined and malocclusion, type of head, age, sex and breed were recorded. Malocclusion was diagnosed in 29 out of 111 (26.1%) dogs. The most frequent malocclusion was anterior crossbite, followed by mandibular prognathism. Although no statistically significant differences were observed between age, sex and breed factors, the mean percentage of malocclusion was greater in males compared to females. Small breeds also showed higher prevalence of malocclusion. Our findings emphasize the necessity of dental hygiene, proper dental care and continuous periodical survey for dogs. Considering the hereditary nature of malocclusion, dog breeders should exclude the affected dogs from further breeding.
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