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  • Title: Temporo-mandibular joint condylectomy and its effect over occlusion in cats: cadaveric study.
    Author: El-Warrak AO, Ferrer GA, Lanthier T, Loureiro Silva B, El-Warrak LO.
    Journal: J Small Anim Pract; 2011 Mar; 52(3):158-62. PubMed ID: 21338365.
    Abstract:
    OBJECTIVE: To determine the effect of unilateral condylectomy on dental occlusion in cats. METHODS: Twelve feline cadaver heads were randomly submitted to either a right or left unilateral condylectomy of the temporo-mandibular joint. The distance between the mandibular and maxillary canine tooth was measured before (B0) and after the unilateral condylectomy (P0). A right or left latero--lateral standardised force (4 N) was applied to the mandibular mentus area before and after the surgical procedure. These measurements were analysed with a linear model for repeated measures. RESULTS: The comparative analysis between pre- and postsurgical values indicated no significant variation in teeth displacement following condylectomy between B0 and P0 measurements. Statistically significant differences were detected after either left or right condylectomy with respect to all measurements after application of the standardised forces. Occlusion changes are significant when comparing bites before and after surgery. CLINICAL SIGNIFICANCE: Unilateral condylectomy causes a significant increase in latero-lateral amplitude of jaw movement which might clinically affect feline dental occlusion. Clinical studies are required to determine the effect of unilateral condylectomies on mastication and dental occlusion in feline patients.
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