Capík I., V. Ledeck˘, A. ·evãík: Tooth Fracture Evaluation and Endodontic Treatment in Dogs. Acta Vet. Brno 2000, 69: 115-122. Tooth fractures constitute a considerable fraction of all tooth diseaes. Out of 5370 dogs treated during four years, 492 (9%) patients were treated for dental problems. Out of this number, 139 (28.3%) dogs were treated for tooth fractures. The most frequently affected teeth were canines, 54 cases (38.8%) succeeded by 46 premolar teeth (33.1%), 36 incisors (25.9%) and 3 molars (2.2%). From among the patients with canine and incisor fractures, 61 (67.7%) were large breed dogs. Frontal teeth fractures occurred during training, guard and police work or in play. On the other hand, the premolar fractures (especially 108, 208) were divided evenly among large and medium (small) breeds.The results of nonsurgical endodontic treatment showed 100% success with incisors and canines. Periapical lesions were seen infrequently in the above-mentioned teeth. Out of 24 endodonticaly treated incisors and canines with necrotic pulp the periapical lesions were present only in 3 cases (12.5%).Fractures of upper fourth premolars were divided evenly among large (15 dogs with 18 fractures), medium (small) breeds (21 dogs with 23 fractures). Higher incidence of crown damage (fracture line reaching subgingival tooth portion) was observed in large breed dogs (82.3%) as compared to medium and small breeds (37.5%). X-ray examinations showed a high number of periapical lesions (37 -90.2%). The distal root alone was involved in 20 teeth (48.8%). Radiolucencies in distal and mesial regions were observed in 11 teeth (26.8%). The mesial region was involved in 6 teeth (14.6%).All patients without local complications (swelling, fistula) were treated successfully (100%). Out of 12 cases accompanied with local complications (4 swellings, 8 fistulas) failure was recorded in 4 cases (33.3%). The fistulas were closed within one week. Despite a considerable incidence of root lesion the results of standard endodontic treatment were good. Standard root canal therapy, performed repeatedly following a relapse, yielded mostly good therapeutic results. Fistula, swelling, age, breeds, periapical lesionsTooth fractures occurring predominantly as crown and cup fractures, or buccolingual (palatolingual) slab fractures, are common diagnosis in veterinary dentistry.According to Eisenmenger and Zetner (1985), and Harvey and Emily (1993), the prevalence of tooth fractures is influenced by two factors:-anatomical position and the height of the tooth -the use and activity of dogs The diagnosis of endodontic lesions in veterinary dentistry is complicated by the lack of diagnostic procedures based on subjective symptoms of pain, sensitivity to hot, cold, or percussion, and foul taste or odour. Holmberg (1979) described pain symptoms in dogs such as salivation, holding head aside, and pawing, especially after eating. Schmeltzer et al. (1980) did not observe any clinical signs of pain with pulp-affected tooth fractures.The majority of to...
Our results demonstrate that the current dose of combined red and blue PBM improves the healing of sutured skin incisions in minipigs.
This study investigated the neuroprotective efficacy of local hypothermia in a minipig model of spinal cord injury (SCI) induced by a computer-controlled impactor device. The tissue integrity observed at the injury epicenter, and up to 3 cm cranially and caudally from the lesion site correlated with motor function. A computer-controlled device produced contusion lesions at L3 level with two different degrees of tissue sparing, depending upon pre-set impact parameters (8N- and 15N-force impact). Hypothermia with cold (4°C) saline or Dulbecco's modified Eagle's medium (DMEM)/F12 culture medium was applied 30 min after SCI (for 5 h) via a perfusion chamber (flow 2 ml/min). After saline hypothermia, the 8N-SCI group achieved faster recovery of hind limb function and the ability to walk from one to three steps at nine weeks in comparison with non-treated animals. Such improvements were not observed in saline-treated animals subjected to more severe 15N-SCI or in the group treated with DMEM/F12 medium. It was demonstrated that the tissue preservation in the cranial and caudal segments immediately adjacent to the lesion, and neurofilament protection in the lateral columns may be essential for modulation of the key spinal microcircuits leading to a functional outcome. Tissue sparing observed only in the caudal sections, even though significant, was not sufficient for functional improvement in the 15N-SCI model.
The aim of the study was to demonstrate the orthodontic treatment of malocclusions in dogs, a condition which can lead to cranio-mandibular and functional disorders of the stomatognathic system. The treatment involved the use of maxillofacialorthopaedic appliances, which type depended on the type of disorder and the degree of malocclusion. The applied treatment induced changes in the alveolar bone. Throughout the process of the treatment a great attention was paid to regular brushing off the orthodontic appliance using antiseptics for prophylactic prevention of inflammation of gingival tissue and the palate caused by food getting stuck in the spaces between the teeth.
The aim of the present study was to investigate the therapeutic efficacy of local hypothermia (beginning 30 min post-injury persisting for 5 h) on tissue preservation along the rostro-caudal axis of the spinal cord (3 cm cranially and caudally from the lesion site), and the prevention of injury-induced functional loss in a newly developed computer-controlled compression model in minipig (force of impact 18N at L3 level), which mimics severe spinal cord injury (SCI). Minipigs underwent SCI with two post-injury modifications (durotomy vs. intact dura mater) followed by hypothermia through a perfusion chamber with cold (epidural t≈15°C) saline, DMEM/F12 or enriched DMEM/F12 (SCI/durotomy group) and with room temperature (t≈24°C) saline (SCI-only group). Minipigs treated with post-SCI durotomy demonstrated slower development of spontaneous neurological improvement at the early postinjury time points, although the outcome at 9 weeks of survival did not differ significantly between the two SCI groups. Hypothermia with saline (t≈15°C) applied after SCI-durotomy improved white matter integrity in the dorsal and lateral columns in almost all rostro-caudal segments, whereas treatment with medium/enriched medium affected white matter integrity only in the rostral segments. Furthermore, regeneration of neurofilaments in the spinal cord after SCI-durotomy and hypothermic treatments indicated an important role of local saline hypothermia in the functional outcome. Although saline hypothermia (24°C) in the SCI-only group exhibited a profound histological outcome (regarding the gray and white matter integrity and the number of motoneurons) and neurofilament protection in general, none of the tested treatments resulted in significant improvement of neurological status. The findings suggest that clinically-proven medical treatments for SCI combined with early 5 h-long saline hypothermia treatment without opening the dural sac could be more beneficial for tissue preservation and neurological outcome compared with hypothermia applied after durotomy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.