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Pathological fracture induced by Halicephalobus gingivalis (Nematoda: Rhabditida) in a horse limb
Ticiana Meireles Sousa,Hugo Shisei Toma,Antonio de Pádua Lima,Antonio Carlos Cunha Lacreta Junior,Maira Meira Nunes,Ana Paula Cassiano da Silva,Daniel Wouters,Adriana Silva Albuquerque,Mary Suzan Vara 대한기생충학ㆍ열대의학회 2024 The Korean Journal of Parasitology Vol.62 No.1
Halicephalobus gingivalis is a free-living nematode that occasionally causes infections inhorses. We report a rare case of limb fracture of horse caused by infection with H. gingivalis. An 8-year-old mare was referred to the Veterinary Hospital of the Federal Universityof Lavras with claudication grade 5 of the right hind limb, that had been started 3months ago. The patient had aseptic arthritis in the tarsal joint and edema that extendedto the quartile. The radiographic examination showed punctate osteolysis with exacerbation of bone trabeculation along the calcaneus, talus, proximal epiphysis of the thirdmetatarsal and distal epiphysis of the tibia. Treatment for arthritis was initiated, and theanimal showed a slight improvement in limb function. However, 21 days after hospitalization, due to a comminuted fracture of the tibia, it was euthanized. At necropsy, yellowish masses were found from the metatarsal to the tibia, and around the tarsal bonesand joint. Similar masses were also found in the left kidney. Numerous nematodes compatible with H. gingivalis were identified. This is the first description of a pathologicalfracture caused by H. gingivalis infection in an equine limb.
Vinhorte, Marcilene Coelho,Eduardo Hideki, Suzuki,Maira Sousa, De Carvalho,Andre Augusto Franco, Marques,Emilio Carlos Junior, Sponchiado,Lucas Da Fonseca Roberti, Garcia The Korean Academy of Conservative Dentistry 2014 Restorative Dentistry & Endodontics Vol.39 No.2
Objectives: To evaluate the effect of passive ultrasonic agitation on the cleaning capacity of a hybrid instrumentation technique. Materials and Methods: Twenty mandibular incisors with mesiodistal-flattened root shape had their crowns sectioned at 1 mm from the cementoenamel junction. Instrumentation was initiated by catheterization with K-type files (Denstply Maillefer) #10, #15, and #20 at 3 mm from the working length. Cervical preparation was performed with Largo bur #1 (Dentsply Maillefer) followed by apical instrumentation with K-type files #15, #20 and #25, and finishing with ProTaper F2 file (Denstply Maillefer). All files were used up to the working length under irrigation with 1 mL of 2.5% sodium hypochlorite (Biodyn$\hat{a}$mica) at each instrument change. At the end of instrumentation, the roots were randomly separated into 2 groups (n = 10). All specimens received final irrigation with 1 mL of 2.5% sodium hypochlorite. The solution remained in the root canals in Group 1 for one minute; and ultrasonic agitation was performed in Group 2 for one minute using a straight tip inserted at 1 mm from working length. The specimens were processed histologically and the sections were analyzed under optic microscope (x64) to quantify debris present in the root canal. Results: The samples submitted to ultrasonic agitation (Group 2) presented significant decrease in the amount of debris in comparison with those of Group 1 (p < 0.05). Conclusions: The hybrid instrumentation technique associated with passive ultrasonic agitation promoted greater debris removal in the apical third of the root canals.